diff --git a/.gitmodules b/.gitmodules
index d6b45d7..fc2be7a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,7 @@
 [submodule "emsdk"]
 	path = emsdk
 	url = https://github.com/emscripten-core/emsdk.git
+	ignore = untracked
+[submodule "pixi.js"]
+	path = pixi.js
+	url = https://git.mhack.io/git/mark/pixi.js.git

diff --git a/.gitmodules b/.gitmodules
index d6b45d7..fc2be7a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,7 @@
 [submodule "emsdk"]
 	path = emsdk
 	url = https://github.com/emscripten-core/emsdk.git
+	ignore = untracked
+[submodule "pixi.js"]
+	path = pixi.js
+	url = https://git.mhack.io/git/mark/pixi.js.git
diff --git a/imgui-js b/imgui-js
index 9f694ef..9536eca 160000
--- a/imgui-js
+++ b/imgui-js
@@ -1 +1 @@
-Subproject commit 9f694ef7e8e7251c32f7811ba39938951a12097a
+Subproject commit 9536ecad287eb76812087cd3fee1aaacb448c027

diff --git a/.gitmodules b/.gitmodules
index d6b45d7..fc2be7a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,7 @@
 [submodule "emsdk"]
 	path = emsdk
 	url = https://github.com/emscripten-core/emsdk.git
+	ignore = untracked
+[submodule "pixi.js"]
+	path = pixi.js
+	url = https://git.mhack.io/git/mark/pixi.js.git
diff --git a/imgui-js b/imgui-js
index 9f694ef..9536eca 160000
--- a/imgui-js
+++ b/imgui-js
@@ -1 +1 @@
-Subproject commit 9f694ef7e8e7251c32f7811ba39938951a12097a
+Subproject commit 9536ecad287eb76812087cd3fee1aaacb448c027
diff --git a/indexdev.html b/indexdev.html
index 2f6c3b3..3d27479 100644
--- a/indexdev.html
+++ b/indexdev.html
@@ -2,22 +2,16 @@
     <head>
         <title>7GUI</title>
         <script src="node_modules/systemjs/dist/system.js"></script>
-        <!--
-        <script type="systemjs-importmap">
-            {
-                "imports": {
-                    "imgui-js/example/imgui_impl": "imgui-js/dist/imgui_impl.umd.js"
-                }
-            }
-        </script>
-        -->
         <script>
             System.config({
                 map: {
-                    "imgui-js": "./imgui-js"
+                    "imgui-js": "./imgui-js",
+                    "pixi.js": "./node_modules/pixi.js"
                 },
                 packages: {
-                    "imgui-js": { main: "imgui.js", }
+                    "imgui-js": { main: "imgui.js" },
+                    "pixi.js": { main: "dist/pixi.js" },
+                    "./": { map: { "src/utils": "./src/utils.js", "src/imgui_impl": "./src/imgui_impl.js" } }
                 }
             });
             System.import("./src/main.js");

diff --git a/.gitmodules b/.gitmodules
index d6b45d7..fc2be7a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,7 @@
 [submodule "emsdk"]
 	path = emsdk
 	url = https://github.com/emscripten-core/emsdk.git
+	ignore = untracked
+[submodule "pixi.js"]
+	path = pixi.js
+	url = https://git.mhack.io/git/mark/pixi.js.git
diff --git a/imgui-js b/imgui-js
index 9f694ef..9536eca 160000
--- a/imgui-js
+++ b/imgui-js
@@ -1 +1 @@
-Subproject commit 9f694ef7e8e7251c32f7811ba39938951a12097a
+Subproject commit 9536ecad287eb76812087cd3fee1aaacb448c027
diff --git a/indexdev.html b/indexdev.html
index 2f6c3b3..3d27479 100644
--- a/indexdev.html
+++ b/indexdev.html
@@ -2,22 +2,16 @@
     <head>
         <title>7GUI</title>
         <script src="node_modules/systemjs/dist/system.js"></script>
-        <!--
-        <script type="systemjs-importmap">
-            {
-                "imports": {
-                    "imgui-js/example/imgui_impl": "imgui-js/dist/imgui_impl.umd.js"
-                }
-            }
-        </script>
-        -->
         <script>
             System.config({
                 map: {
-                    "imgui-js": "./imgui-js"
+                    "imgui-js": "./imgui-js",
+                    "pixi.js": "./node_modules/pixi.js"
                 },
                 packages: {
-                    "imgui-js": { main: "imgui.js", }
+                    "imgui-js": { main: "imgui.js" },
+                    "pixi.js": { main: "dist/pixi.js" },
+                    "./": { map: { "src/utils": "./src/utils.js", "src/imgui_impl": "./src/imgui_impl.js" } }
                 }
             });
             System.import("./src/main.js");
diff --git a/package-lock.json b/package-lock.json
index ed52494..8bda7e5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,16 +4,34 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@pixi/constants": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/constants/-/constants-5.1.0.tgz",
+      "integrity": "sha512-86cogDvjF9yNvmxeizwkIhA0Kl2z3gUSWMf2daYx903dzyje7fwkzRrKLnqDUn6vSAxRXiska0DMJhwYsIC29w=="
+    },
+    "@pixi/math": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/math/-/math-5.1.0.tgz",
+      "integrity": "sha512-Vf9W4SgYRRQMdSq8tFViKKKGCU3iklf0RDzd+wzp4gezOxe3m0PLB7XKwvVrP1hRjUh49zIAL9JBpYREPS1EMw=="
+    },
+    "@pixi/polyfill": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/polyfill/-/polyfill-5.1.0.tgz",
+      "integrity": "sha512-8M3nYCO0a599fsdLW7wv9SBYriMqS1QckKAkRuN2JualRuK/GjxZjm5Vcbcwc1gGONRUKZroH12CuPyTcU2HnQ==",
+      "requires": {
+        "es6-promise-polyfill": "^1.2.0",
+        "object-assign": "^4.1.1"
+      }
+    },
     "@types/estree": {
       "version": "0.0.39",
       "resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.39.tgz",
       "integrity": "sha512-EYNwp3bU+98cpU4lAWYYL7Zz+2gryWH1qbdDTidVd6hkiR6weksdbMadyXKXNPEkQFhXM+hVO9ZygomHXp+AIw=="
     },
     "@types/node": {
-      "version": "12.0.7",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.0.7.tgz",
-      "integrity": "sha512-1YKeT4JitGgE4SOzyB9eMwO0nGVNkNEsm9qlIt1Lqm/tG2QEiSMTD4kS3aO6L+w5SClLVxALmIBESK6Mk5wX0A==",
-      "dev": true
+      "version": "12.6.8",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.6.8.tgz",
+      "integrity": "sha512-aX+gFgA5GHcDi89KG5keey2zf0WfZk/HAQotEamsK2kbey+8yGKcson0hbK8E+v0NArlCJQCqMP161YhV6ZXLg=="
     },
     "@types/resolve": {
       "version": "0.0.8",
@@ -27,7 +45,13 @@
     "@types/systemjs": {
       "version": "0.20.6",
       "resolved": "https://registry.npmjs.org/@types/systemjs/-/systemjs-0.20.6.tgz",
-      "integrity": "sha512-p3yv9sBBJXi3noUG216BpUI7VtVBUAvBIfZNTiDROUY31YBfsFHM4DreS7XMekN8IjtX0ysvCnm6r3WnirnNeA=="
+      "integrity": "sha512-p3yv9sBBJXi3noUG216BpUI7VtVBUAvBIfZNTiDROUY31YBfsFHM4DreS7XMekN8IjtX0ysvCnm6r3WnirnNeA==",
+      "dev": true
+    },
+    "@types/webgl2": {
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/@types/webgl2/-/webgl2-0.0.5.tgz",
+      "integrity": "sha512-oGaKsBbxQOY5+aJFV3KECDhGaXt+yZJt2y/OZsnQGLRkH6Fvr7rv4pCt3SRH1somIHfej/c4u7NSpCyd9x+1Ow=="
     },
     "abstract-leveldown": {
       "version": "0.12.4",
@@ -57,9 +81,9 @@
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     "acorn": {
-      "version": "6.1.1",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.1.1.tgz",
-      "integrity": "sha512-jPTiwtOxaHNaAPg/dmrJ/beuzLRnXtB0kQPQ8JpotKJgTB6rX6c8mlf315941pyjBSaPg8NHXS9fhP4u17DpGA=="
+      "version": "6.2.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.2.0.tgz",
+      "integrity": "sha512-8oe72N3WPMjA+2zVG71Ia0nXZ8DpQH+QyyHO+p06jT8eg8FGG3FbcUIi8KziHlAfheJQZeoqbvq1mQSQHXKYLw=="
     },
     "anymatch": {
       "version": "2.0.0",
@@ -258,6 +282,12 @@
             "isarray": "0.0.1",
             "string_decoder": "~0.10.x"
           }
+        },
+        "string_decoder": {
+          "version": "0.10.31",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
+          "dev": true
         }
       }
     },
@@ -485,12 +515,6 @@
         "object-visit": "^1.0.0"
       }
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-    "colors": {
-      "version": "1.3.3",
-      "resolved": "https://registry.npmjs.org/colors/-/colors-1.3.3.tgz",
-      "integrity": "sha512-mmGt/1pZqYRjMxB1axhTo16/snVZ5krrKkcmMeVKxzECMMXoCgnvTPp10QgHfcbQZw8Dq2jMNG6je4JlWU0gWg==",
-      "dev": true
-    },
     "component-emitter": {
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       "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.3.0.tgz",
@@ -533,16 +557,6 @@
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-      "version": "2.8.5",
-      "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
-      "integrity": "sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==",
-      "dev": true,
-      "requires": {
-        "object-assign": "^4",
-        "vary": "^1"
-      }
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     "create-ecdh": {
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       "resolved": "https://registry.npmjs.org/create-ecdh/-/create-ecdh-4.0.3.tgz",
@@ -703,6 +717,11 @@
       "integrity": "sha1-rOb/gIwc5mtX0ev5eXessCM0z8E=",
       "dev": true
     },
+    "earcut": {
+      "version": "2.1.5",
+      "resolved": "https://registry.npmjs.org/earcut/-/earcut-2.1.5.tgz",
+      "integrity": "sha512-QFWC7ywTVLtvRAJTVp8ugsuuGQ5mVqNmJ1cRYeLrSHgP3nycr2RHTJob9OtM0v8ujuoKN0NY1a93J/omeTL1PA=="
+    },
     "ee-first": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
@@ -739,6 +758,11 @@
         "prr": "~1.0.1"
       }
     },
+    "es6-promise-polyfill": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/es6-promise-polyfill/-/es6-promise-polyfill-1.2.0.tgz",
+      "integrity": "sha1-84kl8jyz4+jObNqP93T867sJDN4="
+    },
     "escape-html": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
@@ -772,6 +796,11 @@
         "through": "~2.3.1"
       }
     },
+    "eventemitter3": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-3.1.2.tgz",
+      "integrity": "sha512-tvtQIeLVHjDkJYnzf2dgVMxfuSGJeM/7UCG17TT4EumTfNtF+0nebF/4zWOIkCreAbtNqhGEboB6BWrwqNaw4Q=="
+    },
     "evp_bytestokey": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/evp_bytestokey/-/evp_bytestokey-1.0.3.tgz",
@@ -904,9 +933,9 @@
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     "faye-websocket": {
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-      "resolved": "https://registry.npmjs.org/faye-websocket/-/faye-websocket-0.11.1.tgz",
-      "integrity": "sha1-8O/hjE9W5PQK/H4Gxxn9XuYYjzg=",
+      "version": "0.11.3",
+      "resolved": "https://registry.npmjs.org/faye-websocket/-/faye-websocket-0.11.3.tgz",
+      "integrity": "sha512-D2y4bovYpzziGgbHYtGCMjlJM36vAl/y+xUyn1C+FVx8szd1E+86KwVw6XvYSzOP8iMpm1X0I4xJD+QtUb36OA==",
       "dev": true,
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@@ -1568,6 +1597,12 @@
             "isarray": "0.0.1",
             "string_decoder": "~0.10.x"
           }
+        },
+        "string_decoder": {
+          "version": "0.10.31",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
+          "dev": true
         }
       }
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@@ -1599,9 +1634,9 @@
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-      "version": "4.1.15",
-      "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.1.15.tgz",
-      "integrity": "sha512-6uHUhOPEBgQ24HM+r6b/QwWfZq+yiFcipKFrOFiBEnWdy5sdzYoi+pJeQaPI5qOLRFqWmAXUPQNsielzdLoecA==",
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.0.tgz",
+      "integrity": "sha512-jpSvDPV4Cq/bgtpndIWbI5hmYxhQGHPC4d4cqBPb4DLniCfhJokdXhwhaDuLBGLQdvvRum/UiX6ECVIPvDXqdg==",
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@@ -1680,22 +1715,22 @@
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-      "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.7.2.tgz",
-      "integrity": "sha512-uUQBt3H/cSIVfch6i1EuPNy/YsRSOUBXTVfZ+yR7Zjez3qjBz6i9+i4zjNaoqcoFVI4lQJ5plg63TvGfRSDCRg==",
+      "version": "1.7.3",
+      "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.7.3.tgz",
+      "integrity": "sha512-ZTTX0MWrsQ2ZAhA1cejAwDLycFsd7I7nVtnkT3Ol0aqodaKW+0CTZDQ1uBv5whptCnc8e8HeRRJxRs0kmm/Qfw==",
       "dev": true,
       "requires": {
         "depd": "~1.1.2",
-        "inherits": "2.0.3",
+        "inherits": "2.0.4",
         "setprototypeof": "1.1.1",
         "statuses": ">= 1.5.0 < 2",
         "toidentifier": "1.0.0"
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-      "resolved": "https://registry.npmjs.org/http-parser-js/-/http-parser-js-0.5.0.tgz",
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+      "version": "0.4.10",
+      "resolved": "https://registry.npmjs.org/http-parser-js/-/http-parser-js-0.4.10.tgz",
+      "integrity": "sha1-ksnBN0w1CF912zWexWzCV8u5P6Q=",
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@@ -3790,9 +3825,9 @@
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-      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
-      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
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@@ -3938,9 +3973,9 @@
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+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/is-reference/-/is-reference-1.1.3.tgz",
+      "integrity": "sha512-W1iHHv/oyBb2pPxkBxtaewxa1BC58Pn5J0hogyCdefwUIvb6R+TGbAcIa4qPNYLqLhb3EnOgUf2MQkkF76BcKw==",
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@@ -3970,6 +4005,11 @@
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       "dev": true
     },
+    "ismobilejs": {
+      "version": "0.5.2",
+      "resolved": "https://registry.npmjs.org/ismobilejs/-/ismobilejs-0.5.2.tgz",
+      "integrity": "sha512-ta9UdV60xVZk/ZafFtSFslQaE76SvNkcs1r73d2PVR21zVzx9xuYv9tNe4MxA1NN7WoeCc2RjGot3Bz1eHDx3Q=="
+    },
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       "resolved": "https://registry.npmjs.org/isobject/-/isobject-3.0.1.tgz",
@@ -4019,6 +4059,12 @@
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             "string_decoder": "~0.10.x"
           }
+        },
+        "string_decoder": {
+          "version": "0.10.31",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
+          "dev": true
         }
       }
     },
@@ -4166,6 +4212,12 @@
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           }
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+        "string_decoder": {
+          "version": "0.10.31",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
+          "dev": true
+        },
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@@ -4195,11 +4247,69 @@
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+          "version": "1.3.3",
+          "resolved": "https://registry.npmjs.org/colors/-/colors-1.3.3.tgz",
+          "integrity": "sha512-mmGt/1pZqYRjMxB1axhTo16/snVZ5krrKkcmMeVKxzECMMXoCgnvTPp10QgHfcbQZw8Dq2jMNG6je4JlWU0gWg==",
+          "dev": true
+        },
+        "cors": {
+          "version": "2.8.5",
+          "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
+          "integrity": "sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==",
+          "dev": true,
+          "requires": {
+            "object-assign": "^4",
+            "vary": "^1"
+          }
+        },
+        "ms": {
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+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
+          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
+          "dev": true
+        },
         "object-assign": {
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           "dev": true
+        },
+        "opn": {
+          "version": "6.0.0",
+          "resolved": "https://registry.npmjs.org/opn/-/opn-6.0.0.tgz",
+          "integrity": "sha512-I9PKfIZC+e4RXZ/qr1RhgyCnGgYX0UEIlXgWnCOVACIvFgaC9rz6Won7xbdhoHrd8IIhV7YEpHjreNUNkqCGkQ==",
+          "dev": true,
+          "requires": {
+            "is-wsl": "^1.1.0"
+          }
+        },
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@@ -4607,6 +5077,16 @@
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-      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.0.tgz",
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+      "version": "10.0.1",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.1.tgz",
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       "dev": true,
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@@ -4771,16 +5242,16 @@
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@@ -4846,35 +5317,6 @@
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-        "etag": "~1.8.1",
-        "fresh": "0.5.2",
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@@ -4902,6 +5344,12 @@
             "statuses": ">= 1.4.0 < 2"
           }
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+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+          "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+          "dev": true
+        },
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@@ -4911,9 +5359,9 @@
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@@ -5082,9 +5530,9 @@
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+      "version": "1.4.6",
+      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.6.tgz",
+      "integrity": "sha512-1ZooVLYFxC448piVLBbtOxFcXwnymH9oUF8nRd3CuYDVvkRBxRl6pB4Mtas5a4drtL+E8LDgFkQNcgIw6tc8Hg==",
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@@ -5148,10 +5596,13 @@
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-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
-      "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
-      "dev": true
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "~5.1.0"
+      }
     },
     "systemjs": {
       "version": "0.21.6",
@@ -5231,44 +5682,21 @@
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+      "version": "3.5.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.3.tgz",
+      "integrity": "sha512-ACzBtm/PhXBDId6a6sDJfroT2pOWt/oOnk4/dElG5G33ZL776N3Y6/6bKZJBFpd+b05F3Ct9qDjMeJmRWtE2/g==",
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-      "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",
+      "integrity": "sha512-tJfXmxMeWYnczCVs7XAEvIV7ieppALdyepWMkHkwciRpZraG/xwT+s2JN8+pr1+8jCRf80FFzvr+MpQeeoF4Xg==",
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-          "dev": true,
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-          "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=",
-          "dev": true,
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-            "is-extendable": "^0.1.1",
-            "is-plain-object": "^2.0.1",
-            "to-object-path": "^0.3.0"
-          }
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+        "set-value": "^2.0.1"
       }
     },
     "universalify": {
@@ -5341,6 +5769,15 @@
       "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
       "dev": true
     },
+    "url": {
+      "version": "0.11.0",
+      "resolved": "https://registry.npmjs.org/url/-/url-0.11.0.tgz",
+      "integrity": "sha1-ODjpfPxgUh63PFJajlW/3Z4uKPE=",
+      "requires": {
+        "punycode": "1.3.2",
+        "querystring": "0.2.0"
+      }
+    },
     "use": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
@@ -5372,12 +5809,13 @@
       "dev": true
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-      "version": "0.7.0",
-      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.0.tgz",
-      "integrity": "sha1-DK+dLXVdk67gSdS90NP+LMoqJOs=",
+      "version": "0.7.3",
+      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.3.tgz",
+      "integrity": "sha512-bpxWlvbbB459Mlipc5GBzzZwhoZgGEZLuqPaR0INBGnPAY1vdBX6hPnoFXiw+3yWxDuHyQjO2oXTMyS8A5haFg==",
       "dev": true,
       "requires": {
-        "http-parser-js": ">=0.4.0",
+        "http-parser-js": ">=0.4.0 <0.4.11",
+        "safe-buffer": ">=5.1.0",
         "websocket-extensions": ">=0.1.1"
       }
     },

diff --git a/.gitmodules b/.gitmodules
index d6b45d7..fc2be7a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,7 @@
 [submodule "emsdk"]
 	path = emsdk
 	url = https://github.com/emscripten-core/emsdk.git
+	ignore = untracked
+[submodule "pixi.js"]
+	path = pixi.js
+	url = https://git.mhack.io/git/mark/pixi.js.git
diff --git a/imgui-js b/imgui-js
index 9f694ef..9536eca 160000
--- a/imgui-js
+++ b/imgui-js
@@ -1 +1 @@
-Subproject commit 9f694ef7e8e7251c32f7811ba39938951a12097a
+Subproject commit 9536ecad287eb76812087cd3fee1aaacb448c027
diff --git a/indexdev.html b/indexdev.html
index 2f6c3b3..3d27479 100644
--- a/indexdev.html
+++ b/indexdev.html
@@ -2,22 +2,16 @@
     <head>
         <title>7GUI</title>
         <script src="node_modules/systemjs/dist/system.js"></script>
-        <!--
-        <script type="systemjs-importmap">
-            {
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-                }
-            }
-        </script>
-        -->
         <script>
             System.config({
                 map: {
-                    "imgui-js": "./imgui-js"
+                    "imgui-js": "./imgui-js",
+                    "pixi.js": "./node_modules/pixi.js"
                 },
                 packages: {
-                    "imgui-js": { main: "imgui.js", }
+                    "imgui-js": { main: "imgui.js" },
+                    "pixi.js": { main: "dist/pixi.js" },
+                    "./": { map: { "src/utils": "./src/utils.js", "src/imgui_impl": "./src/imgui_impl.js" } }
                 }
             });
             System.import("./src/main.js");
diff --git a/package-lock.json b/package-lock.json
index ed52494..8bda7e5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,16 +4,34 @@
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   "requires": true,
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+    },
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+      "resolved": "https://registry.npmjs.org/@pixi/math/-/math-5.1.0.tgz",
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+    },
+    "@pixi/polyfill": {
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+      "resolved": "https://registry.npmjs.org/@pixi/polyfill/-/polyfill-5.1.0.tgz",
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-      "dev": true
+      "version": "12.6.8",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.6.8.tgz",
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+      "integrity": "sha512-p3yv9sBBJXi3noUG216BpUI7VtVBUAvBIfZNTiDROUY31YBfsFHM4DreS7XMekN8IjtX0ysvCnm6r3WnirnNeA==",
+      "dev": true
+    },
+    "@types/webgl2": {
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/@types/webgl2/-/webgl2-0.0.5.tgz",
+      "integrity": "sha512-oGaKsBbxQOY5+aJFV3KECDhGaXt+yZJt2y/OZsnQGLRkH6Fvr7rv4pCt3SRH1somIHfej/c4u7NSpCyd9x+1Ow=="
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+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.2.0.tgz",
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@@ -258,6 +282,12 @@
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+      "resolved": "https://registry.npmjs.org/earcut/-/earcut-2.1.5.tgz",
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@@ -739,6 +758,11 @@
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+      "resolved": "https://registry.npmjs.org/es6-promise-polyfill/-/es6-promise-polyfill-1.2.0.tgz",
+      "integrity": "sha1-84kl8jyz4+jObNqP93T867sJDN4="
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@@ -772,6 +796,11 @@
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-        "inherits": "2.0.3",
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@@ -4166,6 +4212,12 @@
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+          "requires": {
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@@ -4576,15 +5052,9 @@
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-      "resolved": "https://registry.npmjs.org/proxy-middleware/-/proxy-middleware-0.15.0.tgz",
-      "integrity": "sha1-o/3xvvtzD5UZZYcqwvYHTGFHelY=",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz",
+      "integrity": "sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==",
       "dev": true
     },
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@@ -4607,6 +5077,16 @@
         "safe-buffer": "^5.1.2"
       }
     },
+    "punycode": {
+      "version": "1.3.2",
+      "resolved": "https://registry.npmjs.org/punycode/-/punycode-1.3.2.tgz",
+      "integrity": "sha1-llOgNvt8HuQjQvIyXM7v6jkmxI0="
+    },
+    "querystring": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/querystring/-/querystring-0.2.0.tgz",
+      "integrity": "sha1-sgmEkgO7Jd+CDadW50cAWHhSFiA="
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       "resolved": "https://registry.npmjs.org/randombytes/-/randombytes-2.1.0.tgz",
@@ -4645,17 +5125,6 @@
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-          "dev": true,
-          "requires": {
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-          }
-        }
       }
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@@ -4698,9 +5167,9 @@
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-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.11.0.tgz",
-      "integrity": "sha512-WL2pBDjqT6pGUNSUzMw00o4T7If+z4H2x3Gz893WoUQ5KW8Vr9txp00ykiP16VBaZF5+j/OcXJHZ9+PCvdiDKw==",
+      "version": "1.11.1",
+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.11.1.tgz",
+      "integrity": "sha512-vIpgF6wfuJOZI7KKKSP+HmiKggadPQAdsp5HiC1mvqnfp0gF1vdwgBWZIdrVft9pgqoMFQN+R7BSWZiBxx+BBw==",
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@@ -4712,6 +5181,15 @@
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       "dev": true
     },
+    "resource-loader": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/resource-loader/-/resource-loader-3.0.1.tgz",
+      "integrity": "sha512-fBuCRbEHdLCI1eglzQhUv9Rrdcmqkydr1r6uHE2cYHvRBrcLXeSmbE/qI/urFt8rPr/IGxir3BUwM5kUK8XoyA==",
+      "requires": {
+        "mini-signals": "^1.2.0",
+        "parse-uri": "^1.0.0"
+      }
+    },
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       "resolved": "https://registry.npmjs.org/ret/-/ret-0.1.15.tgz",
@@ -4729,33 +5207,26 @@
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-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.15.6.tgz",
-      "integrity": "sha512-s3Vn3QJQ5YVFfIG4nXoG9VdL1I37IZsft+4ZyeBhxE0df1kCFz9e+4bEAbR4mKH3pvBO9e9xjdxWPhhIp0r9ow==",
+      "version": "1.17.0",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.17.0.tgz",
+      "integrity": "sha512-k/j1m0NIsI4SYgCJR4MWPstGJOWfJyd6gycKoMhyoKPVXxm+L49XtbUwZyFsrSU2YXsOkM4u1ll9CS/ZgJBUpw==",
       "requires": {
         "@types/estree": "0.0.39",
-        "@types/node": "^12.0.8",
-        "acorn": "^6.1.1"
-      },
-      "dependencies": {
-        "@types/node": {
-          "version": "12.0.8",
-          "resolved": "https://registry.npmjs.org/@types/node/-/node-12.0.8.tgz",
-          "integrity": "sha512-b8bbUOTwzIY3V5vDTY1fIJ+ePKDUBqt2hC2woVGotdQQhG/2Sh62HOKHrT7ab+VerXAcPyAiTEipPu/FsreUtg=="
-        }
+        "@types/node": "^12.6.2",
+        "acorn": "^6.2.0"
       }
     },
     "rollup-plugin-commonjs": {
-      "version": "10.0.0",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.0.tgz",
-      "integrity": "sha512-B8MoX5GRpj3kW4+YaFO/di2JsZkBxNjVmZ9LWjUoTAjq8N9wc7HObMXPsrvolVV9JXVtYSscflXM14A19dXPNQ==",
+      "version": "10.0.1",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.1.tgz",
+      "integrity": "sha512-x0PcCVdEc4J8igv1qe2vttz8JKAKcTs3wfIA3L8xEty3VzxgORLrzZrNWaVMc+pBC4U3aDOb9BnWLAQ8J11vkA==",
       "dev": true,
       "requires": {
-        "estree-walker": "^0.6.0",
+        "estree-walker": "^0.6.1",
         "is-reference": "^1.1.2",
         "magic-string": "^0.25.2",
-        "resolve": "^1.10.1",
-        "rollup-pluginutils": "^2.7.0"
+        "resolve": "^1.11.0",
+        "rollup-pluginutils": "^2.8.1"
       }
     },
     "rollup-plugin-node-builtins": {
@@ -4771,16 +5242,16 @@
       }
     },
     "rollup-plugin-node-resolve": {
-      "version": "5.0.3",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.0.3.tgz",
-      "integrity": "sha512-Mhhmf0x493xgUPEsRELnU1VM+4+WO82knWkAbZ0d2DvZQZJMbhzyQK/hqtpVscoRru1EqlK3TM1kK9ro469wPw==",
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.2.0.tgz",
+      "integrity": "sha512-jUlyaDXts7TW2CqQ4GaO5VJ4PwwaV8VUGA7+km3n6k6xtOEacf61u0VXwN80phY/evMcaS+9eIeJ9MOyDxt5Zw==",
       "dev": true,
       "requires": {
         "@types/resolve": "0.0.8",
         "builtin-modules": "^3.1.0",
         "is-module": "^1.0.0",
-        "resolve": "^1.11.0",
-        "rollup-pluginutils": "^2.8.0"
+        "resolve": "^1.11.1",
+        "rollup-pluginutils": "^2.8.1"
       }
     },
     "rollup-plugin-typescript2": {
@@ -4846,35 +5317,6 @@
       "integrity": "sha1-uYSPJdbPNjMwc+ye+IVtQvEjPlI=",
       "dev": true
     },
-    "send": {
-      "version": "0.17.1",
-      "resolved": "https://registry.npmjs.org/send/-/send-0.17.1.tgz",
-      "integrity": "sha512-BsVKsiGcQMFwT8UxypobUKyv7irCNRHk1T0G680vk88yf6LBByGcZJOTJCrTP2xVN6yI+XjPJcNuE3V4fT9sAg==",
-      "dev": true,
-      "requires": {
-        "debug": "2.6.9",
-        "depd": "~1.1.2",
-        "destroy": "~1.0.4",
-        "encodeurl": "~1.0.2",
-        "escape-html": "~1.0.3",
-        "etag": "~1.8.1",
-        "fresh": "0.5.2",
-        "http-errors": "~1.7.2",
-        "mime": "1.6.0",
-        "ms": "2.1.1",
-        "on-finished": "~2.3.0",
-        "range-parser": "~1.2.1",
-        "statuses": "~1.5.0"
-      },
-      "dependencies": {
-        "ms": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
-          "dev": true
-        }
-      }
-    },
     "serve-index": {
       "version": "1.9.1",
       "resolved": "https://registry.npmjs.org/serve-index/-/serve-index-1.9.1.tgz",
@@ -4902,6 +5344,12 @@
             "statuses": ">= 1.4.0 < 2"
           }
         },
+        "inherits": {
+          "version": "2.0.3",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+          "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+          "dev": true
+        },
         "setprototypeof": {
           "version": "1.1.0",
           "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
@@ -4911,9 +5359,9 @@
       }
     },
     "set-value": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.0.tgz",
-      "integrity": "sha512-hw0yxk9GT/Hr5yJEYnHNKYXkIA8mVJgd9ditYZCe16ZczcaELYYcfvaXesNACk2O8O0nTiPQcQhGUQj8JLzeeg==",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.1.tgz",
+      "integrity": "sha512-JxHc1weCN68wRY0fhCoXpyK55m/XPHafOmK4UWD7m2CI14GMcFypt4w/0+NV5f/ZMby2F6S2wwA7fgynh9gWSw==",
       "dev": true,
       "requires": {
         "extend-shallow": "^2.0.1",
@@ -5082,9 +5530,9 @@
       "dev": true
     },
     "sourcemap-codec": {
-      "version": "1.4.4",
-      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.4.tgz",
-      "integrity": "sha512-CYAPYdBu34781kLHkaW3m6b/uUSyMOC2R61gcYMWooeuaGtjof86ZA/8T+qVPPt7np1085CR9hmMGrySwEc8Xg==",
+      "version": "1.4.6",
+      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.6.tgz",
+      "integrity": "sha512-1ZooVLYFxC448piVLBbtOxFcXwnymH9oUF8nRd3CuYDVvkRBxRl6pB4Mtas5a4drtL+E8LDgFkQNcgIw6tc8Hg==",
       "dev": true
     },
     "split": {
@@ -5148,10 +5596,13 @@
       "dev": true
     },
     "string_decoder": {
-      "version": "0.10.31",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
-      "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
-      "dev": true
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "~5.1.0"
+      }
     },
     "systemjs": {
       "version": "0.21.6",
@@ -5231,44 +5682,21 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.5.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.2.tgz",
-      "integrity": "sha512-7KxJovlYhTX5RaRbUdkAXN1KUZ8PwWlTzQdHV6xNqvuFOs7+WBo10TQUqT19Q/Jz2hk5v9TQDIhyLhhJY4p5AA==",
+      "version": "3.5.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.3.tgz",
+      "integrity": "sha512-ACzBtm/PhXBDId6a6sDJfroT2pOWt/oOnk4/dElG5G33ZL776N3Y6/6bKZJBFpd+b05F3Ct9qDjMeJmRWtE2/g==",
       "dev": true
     },
     "union-value": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz",
-      "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",
+      "integrity": "sha512-tJfXmxMeWYnczCVs7XAEvIV7ieppALdyepWMkHkwciRpZraG/xwT+s2JN8+pr1+8jCRf80FFzvr+MpQeeoF4Xg==",
       "dev": true,
       "requires": {
         "arr-union": "^3.1.0",
         "get-value": "^2.0.6",
         "is-extendable": "^0.1.1",
-        "set-value": "^0.4.3"
-      },
-      "dependencies": {
-        "extend-shallow": {
-          "version": "2.0.1",
-          "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
-          "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
-          "dev": true,
-          "requires": {
-            "is-extendable": "^0.1.0"
-          }
-        },
-        "set-value": {
-          "version": "0.4.3",
-          "resolved": "https://registry.npmjs.org/set-value/-/set-value-0.4.3.tgz",
-          "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=",
-          "dev": true,
-          "requires": {
-            "extend-shallow": "^2.0.1",
-            "is-extendable": "^0.1.1",
-            "is-plain-object": "^2.0.1",
-            "to-object-path": "^0.3.0"
-          }
-        }
+        "set-value": "^2.0.1"
       }
     },
     "universalify": {
@@ -5341,6 +5769,15 @@
       "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
       "dev": true
     },
+    "url": {
+      "version": "0.11.0",
+      "resolved": "https://registry.npmjs.org/url/-/url-0.11.0.tgz",
+      "integrity": "sha1-ODjpfPxgUh63PFJajlW/3Z4uKPE=",
+      "requires": {
+        "punycode": "1.3.2",
+        "querystring": "0.2.0"
+      }
+    },
     "use": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
@@ -5372,12 +5809,13 @@
       "dev": true
     },
     "websocket-driver": {
-      "version": "0.7.0",
-      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.0.tgz",
-      "integrity": "sha1-DK+dLXVdk67gSdS90NP+LMoqJOs=",
+      "version": "0.7.3",
+      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.3.tgz",
+      "integrity": "sha512-bpxWlvbbB459Mlipc5GBzzZwhoZgGEZLuqPaR0INBGnPAY1vdBX6hPnoFXiw+3yWxDuHyQjO2oXTMyS8A5haFg==",
       "dev": true,
       "requires": {
-        "http-parser-js": ">=0.4.0",
+        "http-parser-js": ">=0.4.0 <0.4.11",
+        "safe-buffer": ">=5.1.0",
         "websocket-extensions": ">=0.1.1"
       }
     },
diff --git a/package.json b/package.json
index 07cf1ea..8aafc46 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,9 @@
     "build": "tsc",
     "rollup": "rollup -c",
     "watch": "npx live-server --open=index.html --watch='./*.html,./*.js'",
-    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./*.js'"
+    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./src/*.js'",
+    "pixi": "cd pixi.js && npm run local && cd .. && npm run pixi:install",
+    "pixi:install": "rm -rf node_modules/pixi.js && rm package-lock.json"
   },
   "repository": {
     "type": "git",
@@ -17,13 +19,15 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@types/systemjs": "^0.20.6",
+    "@types/webgl2": "0.0.5",
     "imgui-js": "file:./imgui-js",
+    "pixi.js": "file:pixi.js/bundles/pixi.js/pixi.js-5.1.4.tgz",
     "rollup": "^1.15.6",
     "systemjs": "^0.21.5"
   },
   "devDependencies": {
     "@types/node": "^12.0.0",
+    "@types/systemjs": "^0.20.6",
     "live-server": "^1.2.1",
     "rollup-plugin-commonjs": "^10.0.0",
     "rollup-plugin-node-builtins": "^2.1.2",

diff --git a/.gitmodules b/.gitmodules
index d6b45d7..fc2be7a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,7 @@
 [submodule "emsdk"]
 	path = emsdk
 	url = https://github.com/emscripten-core/emsdk.git
+	ignore = untracked
+[submodule "pixi.js"]
+	path = pixi.js
+	url = https://git.mhack.io/git/mark/pixi.js.git
diff --git a/imgui-js b/imgui-js
index 9f694ef..9536eca 160000
--- a/imgui-js
+++ b/imgui-js
@@ -1 +1 @@
-Subproject commit 9f694ef7e8e7251c32f7811ba39938951a12097a
+Subproject commit 9536ecad287eb76812087cd3fee1aaacb448c027
diff --git a/indexdev.html b/indexdev.html
index 2f6c3b3..3d27479 100644
--- a/indexdev.html
+++ b/indexdev.html
@@ -2,22 +2,16 @@
     <head>
         <title>7GUI</title>
         <script src="node_modules/systemjs/dist/system.js"></script>
-        <!--
-        <script type="systemjs-importmap">
-            {
-                "imports": {
-                    "imgui-js/example/imgui_impl": "imgui-js/dist/imgui_impl.umd.js"
-                }
-            }
-        </script>
-        -->
         <script>
             System.config({
                 map: {
-                    "imgui-js": "./imgui-js"
+                    "imgui-js": "./imgui-js",
+                    "pixi.js": "./node_modules/pixi.js"
                 },
                 packages: {
-                    "imgui-js": { main: "imgui.js", }
+                    "imgui-js": { main: "imgui.js" },
+                    "pixi.js": { main: "dist/pixi.js" },
+                    "./": { map: { "src/utils": "./src/utils.js", "src/imgui_impl": "./src/imgui_impl.js" } }
                 }
             });
             System.import("./src/main.js");
diff --git a/package-lock.json b/package-lock.json
index ed52494..8bda7e5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,16 +4,34 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@pixi/constants": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/constants/-/constants-5.1.0.tgz",
+      "integrity": "sha512-86cogDvjF9yNvmxeizwkIhA0Kl2z3gUSWMf2daYx903dzyje7fwkzRrKLnqDUn6vSAxRXiska0DMJhwYsIC29w=="
+    },
+    "@pixi/math": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/math/-/math-5.1.0.tgz",
+      "integrity": "sha512-Vf9W4SgYRRQMdSq8tFViKKKGCU3iklf0RDzd+wzp4gezOxe3m0PLB7XKwvVrP1hRjUh49zIAL9JBpYREPS1EMw=="
+    },
+    "@pixi/polyfill": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/polyfill/-/polyfill-5.1.0.tgz",
+      "integrity": "sha512-8M3nYCO0a599fsdLW7wv9SBYriMqS1QckKAkRuN2JualRuK/GjxZjm5Vcbcwc1gGONRUKZroH12CuPyTcU2HnQ==",
+      "requires": {
+        "es6-promise-polyfill": "^1.2.0",
+        "object-assign": "^4.1.1"
+      }
+    },
     "@types/estree": {
       "version": "0.0.39",
       "resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.39.tgz",
       "integrity": "sha512-EYNwp3bU+98cpU4lAWYYL7Zz+2gryWH1qbdDTidVd6hkiR6weksdbMadyXKXNPEkQFhXM+hVO9ZygomHXp+AIw=="
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-          }
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@@ -4698,9 +5167,9 @@
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-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.11.0.tgz",
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+      "version": "1.11.1",
+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.11.1.tgz",
+      "integrity": "sha512-vIpgF6wfuJOZI7KKKSP+HmiKggadPQAdsp5HiC1mvqnfp0gF1vdwgBWZIdrVft9pgqoMFQN+R7BSWZiBxx+BBw==",
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@@ -4712,6 +5181,15 @@
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       "dev": true
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+    "resource-loader": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/resource-loader/-/resource-loader-3.0.1.tgz",
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+      "requires": {
+        "mini-signals": "^1.2.0",
+        "parse-uri": "^1.0.0"
+      }
+    },
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       "resolved": "https://registry.npmjs.org/ret/-/ret-0.1.15.tgz",
@@ -4729,33 +5207,26 @@
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-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.15.6.tgz",
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+      "version": "1.17.0",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.17.0.tgz",
+      "integrity": "sha512-k/j1m0NIsI4SYgCJR4MWPstGJOWfJyd6gycKoMhyoKPVXxm+L49XtbUwZyFsrSU2YXsOkM4u1ll9CS/ZgJBUpw==",
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-        "@types/node": "^12.0.8",
-        "acorn": "^6.1.1"
-      },
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-        "@types/node": {
-          "version": "12.0.8",
-          "resolved": "https://registry.npmjs.org/@types/node/-/node-12.0.8.tgz",
-          "integrity": "sha512-b8bbUOTwzIY3V5vDTY1fIJ+ePKDUBqt2hC2woVGotdQQhG/2Sh62HOKHrT7ab+VerXAcPyAiTEipPu/FsreUtg=="
-        }
+        "@types/node": "^12.6.2",
+        "acorn": "^6.2.0"
       }
     },
     "rollup-plugin-commonjs": {
-      "version": "10.0.0",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.0.tgz",
-      "integrity": "sha512-B8MoX5GRpj3kW4+YaFO/di2JsZkBxNjVmZ9LWjUoTAjq8N9wc7HObMXPsrvolVV9JXVtYSscflXM14A19dXPNQ==",
+      "version": "10.0.1",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.1.tgz",
+      "integrity": "sha512-x0PcCVdEc4J8igv1qe2vttz8JKAKcTs3wfIA3L8xEty3VzxgORLrzZrNWaVMc+pBC4U3aDOb9BnWLAQ8J11vkA==",
       "dev": true,
       "requires": {
-        "estree-walker": "^0.6.0",
+        "estree-walker": "^0.6.1",
         "is-reference": "^1.1.2",
         "magic-string": "^0.25.2",
-        "resolve": "^1.10.1",
-        "rollup-pluginutils": "^2.7.0"
+        "resolve": "^1.11.0",
+        "rollup-pluginutils": "^2.8.1"
       }
     },
     "rollup-plugin-node-builtins": {
@@ -4771,16 +5242,16 @@
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-      "version": "5.0.3",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.0.3.tgz",
-      "integrity": "sha512-Mhhmf0x493xgUPEsRELnU1VM+4+WO82knWkAbZ0d2DvZQZJMbhzyQK/hqtpVscoRru1EqlK3TM1kK9ro469wPw==",
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.2.0.tgz",
+      "integrity": "sha512-jUlyaDXts7TW2CqQ4GaO5VJ4PwwaV8VUGA7+km3n6k6xtOEacf61u0VXwN80phY/evMcaS+9eIeJ9MOyDxt5Zw==",
       "dev": true,
       "requires": {
         "@types/resolve": "0.0.8",
         "builtin-modules": "^3.1.0",
         "is-module": "^1.0.0",
-        "resolve": "^1.11.0",
-        "rollup-pluginutils": "^2.8.0"
+        "resolve": "^1.11.1",
+        "rollup-pluginutils": "^2.8.1"
       }
     },
     "rollup-plugin-typescript2": {
@@ -4846,35 +5317,6 @@
       "integrity": "sha1-uYSPJdbPNjMwc+ye+IVtQvEjPlI=",
       "dev": true
     },
-    "send": {
-      "version": "0.17.1",
-      "resolved": "https://registry.npmjs.org/send/-/send-0.17.1.tgz",
-      "integrity": "sha512-BsVKsiGcQMFwT8UxypobUKyv7irCNRHk1T0G680vk88yf6LBByGcZJOTJCrTP2xVN6yI+XjPJcNuE3V4fT9sAg==",
-      "dev": true,
-      "requires": {
-        "debug": "2.6.9",
-        "depd": "~1.1.2",
-        "destroy": "~1.0.4",
-        "encodeurl": "~1.0.2",
-        "escape-html": "~1.0.3",
-        "etag": "~1.8.1",
-        "fresh": "0.5.2",
-        "http-errors": "~1.7.2",
-        "mime": "1.6.0",
-        "ms": "2.1.1",
-        "on-finished": "~2.3.0",
-        "range-parser": "~1.2.1",
-        "statuses": "~1.5.0"
-      },
-      "dependencies": {
-        "ms": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
-          "dev": true
-        }
-      }
-    },
     "serve-index": {
       "version": "1.9.1",
       "resolved": "https://registry.npmjs.org/serve-index/-/serve-index-1.9.1.tgz",
@@ -4902,6 +5344,12 @@
             "statuses": ">= 1.4.0 < 2"
           }
         },
+        "inherits": {
+          "version": "2.0.3",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+          "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+          "dev": true
+        },
         "setprototypeof": {
           "version": "1.1.0",
           "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
@@ -4911,9 +5359,9 @@
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     },
     "set-value": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.0.tgz",
-      "integrity": "sha512-hw0yxk9GT/Hr5yJEYnHNKYXkIA8mVJgd9ditYZCe16ZczcaELYYcfvaXesNACk2O8O0nTiPQcQhGUQj8JLzeeg==",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.1.tgz",
+      "integrity": "sha512-JxHc1weCN68wRY0fhCoXpyK55m/XPHafOmK4UWD7m2CI14GMcFypt4w/0+NV5f/ZMby2F6S2wwA7fgynh9gWSw==",
       "dev": true,
       "requires": {
         "extend-shallow": "^2.0.1",
@@ -5082,9 +5530,9 @@
       "dev": true
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     "sourcemap-codec": {
-      "version": "1.4.4",
-      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.4.tgz",
-      "integrity": "sha512-CYAPYdBu34781kLHkaW3m6b/uUSyMOC2R61gcYMWooeuaGtjof86ZA/8T+qVPPt7np1085CR9hmMGrySwEc8Xg==",
+      "version": "1.4.6",
+      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.6.tgz",
+      "integrity": "sha512-1ZooVLYFxC448piVLBbtOxFcXwnymH9oUF8nRd3CuYDVvkRBxRl6pB4Mtas5a4drtL+E8LDgFkQNcgIw6tc8Hg==",
       "dev": true
     },
     "split": {
@@ -5148,10 +5596,13 @@
       "dev": true
     },
     "string_decoder": {
-      "version": "0.10.31",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
-      "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
-      "dev": true
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "~5.1.0"
+      }
     },
     "systemjs": {
       "version": "0.21.6",
@@ -5231,44 +5682,21 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.5.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.2.tgz",
-      "integrity": "sha512-7KxJovlYhTX5RaRbUdkAXN1KUZ8PwWlTzQdHV6xNqvuFOs7+WBo10TQUqT19Q/Jz2hk5v9TQDIhyLhhJY4p5AA==",
+      "version": "3.5.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.3.tgz",
+      "integrity": "sha512-ACzBtm/PhXBDId6a6sDJfroT2pOWt/oOnk4/dElG5G33ZL776N3Y6/6bKZJBFpd+b05F3Ct9qDjMeJmRWtE2/g==",
       "dev": true
     },
     "union-value": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz",
-      "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",
+      "integrity": "sha512-tJfXmxMeWYnczCVs7XAEvIV7ieppALdyepWMkHkwciRpZraG/xwT+s2JN8+pr1+8jCRf80FFzvr+MpQeeoF4Xg==",
       "dev": true,
       "requires": {
         "arr-union": "^3.1.0",
         "get-value": "^2.0.6",
         "is-extendable": "^0.1.1",
-        "set-value": "^0.4.3"
-      },
-      "dependencies": {
-        "extend-shallow": {
-          "version": "2.0.1",
-          "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
-          "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
-          "dev": true,
-          "requires": {
-            "is-extendable": "^0.1.0"
-          }
-        },
-        "set-value": {
-          "version": "0.4.3",
-          "resolved": "https://registry.npmjs.org/set-value/-/set-value-0.4.3.tgz",
-          "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=",
-          "dev": true,
-          "requires": {
-            "extend-shallow": "^2.0.1",
-            "is-extendable": "^0.1.1",
-            "is-plain-object": "^2.0.1",
-            "to-object-path": "^0.3.0"
-          }
-        }
+        "set-value": "^2.0.1"
       }
     },
     "universalify": {
@@ -5341,6 +5769,15 @@
       "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
       "dev": true
     },
+    "url": {
+      "version": "0.11.0",
+      "resolved": "https://registry.npmjs.org/url/-/url-0.11.0.tgz",
+      "integrity": "sha1-ODjpfPxgUh63PFJajlW/3Z4uKPE=",
+      "requires": {
+        "punycode": "1.3.2",
+        "querystring": "0.2.0"
+      }
+    },
     "use": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
@@ -5372,12 +5809,13 @@
       "dev": true
     },
     "websocket-driver": {
-      "version": "0.7.0",
-      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.0.tgz",
-      "integrity": "sha1-DK+dLXVdk67gSdS90NP+LMoqJOs=",
+      "version": "0.7.3",
+      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.3.tgz",
+      "integrity": "sha512-bpxWlvbbB459Mlipc5GBzzZwhoZgGEZLuqPaR0INBGnPAY1vdBX6hPnoFXiw+3yWxDuHyQjO2oXTMyS8A5haFg==",
       "dev": true,
       "requires": {
-        "http-parser-js": ">=0.4.0",
+        "http-parser-js": ">=0.4.0 <0.4.11",
+        "safe-buffer": ">=5.1.0",
         "websocket-extensions": ">=0.1.1"
       }
     },
diff --git a/package.json b/package.json
index 07cf1ea..8aafc46 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,9 @@
     "build": "tsc",
     "rollup": "rollup -c",
     "watch": "npx live-server --open=index.html --watch='./*.html,./*.js'",
-    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./*.js'"
+    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./src/*.js'",
+    "pixi": "cd pixi.js && npm run local && cd .. && npm run pixi:install",
+    "pixi:install": "rm -rf node_modules/pixi.js && rm package-lock.json"
   },
   "repository": {
     "type": "git",
@@ -17,13 +19,15 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@types/systemjs": "^0.20.6",
+    "@types/webgl2": "0.0.5",
     "imgui-js": "file:./imgui-js",
+    "pixi.js": "file:pixi.js/bundles/pixi.js/pixi.js-5.1.4.tgz",
     "rollup": "^1.15.6",
     "systemjs": "^0.21.5"
   },
   "devDependencies": {
     "@types/node": "^12.0.0",
+    "@types/systemjs": "^0.20.6",
     "live-server": "^1.2.1",
     "rollup-plugin-commonjs": "^10.0.0",
     "rollup-plugin-node-builtins": "^2.1.2",
diff --git a/pixi.js b/pixi.js
new file mode 160000
index 0000000..1b78731
--- /dev/null
+++ b/pixi.js
@@ -0,0 +1 @@
+Subproject commit 1b78731948b57c635a2e65444c387eed31ec7428

diff --git a/.gitmodules b/.gitmodules
index d6b45d7..fc2be7a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,7 @@
 [submodule "emsdk"]
 	path = emsdk
 	url = https://github.com/emscripten-core/emsdk.git
+	ignore = untracked
+[submodule "pixi.js"]
+	path = pixi.js
+	url = https://git.mhack.io/git/mark/pixi.js.git
diff --git a/imgui-js b/imgui-js
index 9f694ef..9536eca 160000
--- a/imgui-js
+++ b/imgui-js
@@ -1 +1 @@
-Subproject commit 9f694ef7e8e7251c32f7811ba39938951a12097a
+Subproject commit 9536ecad287eb76812087cd3fee1aaacb448c027
diff --git a/indexdev.html b/indexdev.html
index 2f6c3b3..3d27479 100644
--- a/indexdev.html
+++ b/indexdev.html
@@ -2,22 +2,16 @@
     <head>
         <title>7GUI</title>
         <script src="node_modules/systemjs/dist/system.js"></script>
-        <!--
-        <script type="systemjs-importmap">
-            {
-                "imports": {
-                    "imgui-js/example/imgui_impl": "imgui-js/dist/imgui_impl.umd.js"
-                }
-            }
-        </script>
-        -->
         <script>
             System.config({
                 map: {
-                    "imgui-js": "./imgui-js"
+                    "imgui-js": "./imgui-js",
+                    "pixi.js": "./node_modules/pixi.js"
                 },
                 packages: {
-                    "imgui-js": { main: "imgui.js", }
+                    "imgui-js": { main: "imgui.js" },
+                    "pixi.js": { main: "dist/pixi.js" },
+                    "./": { map: { "src/utils": "./src/utils.js", "src/imgui_impl": "./src/imgui_impl.js" } }
                 }
             });
             System.import("./src/main.js");
diff --git a/package-lock.json b/package-lock.json
index ed52494..8bda7e5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,16 +4,34 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@pixi/constants": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/constants/-/constants-5.1.0.tgz",
+      "integrity": "sha512-86cogDvjF9yNvmxeizwkIhA0Kl2z3gUSWMf2daYx903dzyje7fwkzRrKLnqDUn6vSAxRXiska0DMJhwYsIC29w=="
+    },
+    "@pixi/math": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/math/-/math-5.1.0.tgz",
+      "integrity": "sha512-Vf9W4SgYRRQMdSq8tFViKKKGCU3iklf0RDzd+wzp4gezOxe3m0PLB7XKwvVrP1hRjUh49zIAL9JBpYREPS1EMw=="
+    },
+    "@pixi/polyfill": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/polyfill/-/polyfill-5.1.0.tgz",
+      "integrity": "sha512-8M3nYCO0a599fsdLW7wv9SBYriMqS1QckKAkRuN2JualRuK/GjxZjm5Vcbcwc1gGONRUKZroH12CuPyTcU2HnQ==",
+      "requires": {
+        "es6-promise-polyfill": "^1.2.0",
+        "object-assign": "^4.1.1"
+      }
+    },
     "@types/estree": {
       "version": "0.0.39",
       "resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.39.tgz",
       "integrity": "sha512-EYNwp3bU+98cpU4lAWYYL7Zz+2gryWH1qbdDTidVd6hkiR6weksdbMadyXKXNPEkQFhXM+hVO9ZygomHXp+AIw=="
     },
     "@types/node": {
-      "version": "12.0.7",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.0.7.tgz",
-      "integrity": "sha512-1YKeT4JitGgE4SOzyB9eMwO0nGVNkNEsm9qlIt1Lqm/tG2QEiSMTD4kS3aO6L+w5SClLVxALmIBESK6Mk5wX0A==",
-      "dev": true
+      "version": "12.6.8",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.6.8.tgz",
+      "integrity": "sha512-aX+gFgA5GHcDi89KG5keey2zf0WfZk/HAQotEamsK2kbey+8yGKcson0hbK8E+v0NArlCJQCqMP161YhV6ZXLg=="
     },
     "@types/resolve": {
       "version": "0.0.8",
@@ -27,7 +45,13 @@
     "@types/systemjs": {
       "version": "0.20.6",
       "resolved": "https://registry.npmjs.org/@types/systemjs/-/systemjs-0.20.6.tgz",
-      "integrity": "sha512-p3yv9sBBJXi3noUG216BpUI7VtVBUAvBIfZNTiDROUY31YBfsFHM4DreS7XMekN8IjtX0ysvCnm6r3WnirnNeA=="
+      "integrity": "sha512-p3yv9sBBJXi3noUG216BpUI7VtVBUAvBIfZNTiDROUY31YBfsFHM4DreS7XMekN8IjtX0ysvCnm6r3WnirnNeA==",
+      "dev": true
+    },
+    "@types/webgl2": {
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/@types/webgl2/-/webgl2-0.0.5.tgz",
+      "integrity": "sha512-oGaKsBbxQOY5+aJFV3KECDhGaXt+yZJt2y/OZsnQGLRkH6Fvr7rv4pCt3SRH1somIHfej/c4u7NSpCyd9x+1Ow=="
     },
     "abstract-leveldown": {
       "version": "0.12.4",
@@ -57,9 +81,9 @@
       }
     },
     "acorn": {
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-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.15.6.tgz",
-      "integrity": "sha512-s3Vn3QJQ5YVFfIG4nXoG9VdL1I37IZsft+4ZyeBhxE0df1kCFz9e+4bEAbR4mKH3pvBO9e9xjdxWPhhIp0r9ow==",
+      "version": "1.17.0",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.17.0.tgz",
+      "integrity": "sha512-k/j1m0NIsI4SYgCJR4MWPstGJOWfJyd6gycKoMhyoKPVXxm+L49XtbUwZyFsrSU2YXsOkM4u1ll9CS/ZgJBUpw==",
       "requires": {
         "@types/estree": "0.0.39",
-        "@types/node": "^12.0.8",
-        "acorn": "^6.1.1"
-      },
-      "dependencies": {
-        "@types/node": {
-          "version": "12.0.8",
-          "resolved": "https://registry.npmjs.org/@types/node/-/node-12.0.8.tgz",
-          "integrity": "sha512-b8bbUOTwzIY3V5vDTY1fIJ+ePKDUBqt2hC2woVGotdQQhG/2Sh62HOKHrT7ab+VerXAcPyAiTEipPu/FsreUtg=="
-        }
+        "@types/node": "^12.6.2",
+        "acorn": "^6.2.0"
       }
     },
     "rollup-plugin-commonjs": {
-      "version": "10.0.0",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.0.tgz",
-      "integrity": "sha512-B8MoX5GRpj3kW4+YaFO/di2JsZkBxNjVmZ9LWjUoTAjq8N9wc7HObMXPsrvolVV9JXVtYSscflXM14A19dXPNQ==",
+      "version": "10.0.1",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.1.tgz",
+      "integrity": "sha512-x0PcCVdEc4J8igv1qe2vttz8JKAKcTs3wfIA3L8xEty3VzxgORLrzZrNWaVMc+pBC4U3aDOb9BnWLAQ8J11vkA==",
       "dev": true,
       "requires": {
-        "estree-walker": "^0.6.0",
+        "estree-walker": "^0.6.1",
         "is-reference": "^1.1.2",
         "magic-string": "^0.25.2",
-        "resolve": "^1.10.1",
-        "rollup-pluginutils": "^2.7.0"
+        "resolve": "^1.11.0",
+        "rollup-pluginutils": "^2.8.1"
       }
     },
     "rollup-plugin-node-builtins": {
@@ -4771,16 +5242,16 @@
       }
     },
     "rollup-plugin-node-resolve": {
-      "version": "5.0.3",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.0.3.tgz",
-      "integrity": "sha512-Mhhmf0x493xgUPEsRELnU1VM+4+WO82knWkAbZ0d2DvZQZJMbhzyQK/hqtpVscoRru1EqlK3TM1kK9ro469wPw==",
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.2.0.tgz",
+      "integrity": "sha512-jUlyaDXts7TW2CqQ4GaO5VJ4PwwaV8VUGA7+km3n6k6xtOEacf61u0VXwN80phY/evMcaS+9eIeJ9MOyDxt5Zw==",
       "dev": true,
       "requires": {
         "@types/resolve": "0.0.8",
         "builtin-modules": "^3.1.0",
         "is-module": "^1.0.0",
-        "resolve": "^1.11.0",
-        "rollup-pluginutils": "^2.8.0"
+        "resolve": "^1.11.1",
+        "rollup-pluginutils": "^2.8.1"
       }
     },
     "rollup-plugin-typescript2": {
@@ -4846,35 +5317,6 @@
       "integrity": "sha1-uYSPJdbPNjMwc+ye+IVtQvEjPlI=",
       "dev": true
     },
-    "send": {
-      "version": "0.17.1",
-      "resolved": "https://registry.npmjs.org/send/-/send-0.17.1.tgz",
-      "integrity": "sha512-BsVKsiGcQMFwT8UxypobUKyv7irCNRHk1T0G680vk88yf6LBByGcZJOTJCrTP2xVN6yI+XjPJcNuE3V4fT9sAg==",
-      "dev": true,
-      "requires": {
-        "debug": "2.6.9",
-        "depd": "~1.1.2",
-        "destroy": "~1.0.4",
-        "encodeurl": "~1.0.2",
-        "escape-html": "~1.0.3",
-        "etag": "~1.8.1",
-        "fresh": "0.5.2",
-        "http-errors": "~1.7.2",
-        "mime": "1.6.0",
-        "ms": "2.1.1",
-        "on-finished": "~2.3.0",
-        "range-parser": "~1.2.1",
-        "statuses": "~1.5.0"
-      },
-      "dependencies": {
-        "ms": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
-          "dev": true
-        }
-      }
-    },
     "serve-index": {
       "version": "1.9.1",
       "resolved": "https://registry.npmjs.org/serve-index/-/serve-index-1.9.1.tgz",
@@ -4902,6 +5344,12 @@
             "statuses": ">= 1.4.0 < 2"
           }
         },
+        "inherits": {
+          "version": "2.0.3",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+          "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+          "dev": true
+        },
         "setprototypeof": {
           "version": "1.1.0",
           "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
@@ -4911,9 +5359,9 @@
       }
     },
     "set-value": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.0.tgz",
-      "integrity": "sha512-hw0yxk9GT/Hr5yJEYnHNKYXkIA8mVJgd9ditYZCe16ZczcaELYYcfvaXesNACk2O8O0nTiPQcQhGUQj8JLzeeg==",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.1.tgz",
+      "integrity": "sha512-JxHc1weCN68wRY0fhCoXpyK55m/XPHafOmK4UWD7m2CI14GMcFypt4w/0+NV5f/ZMby2F6S2wwA7fgynh9gWSw==",
       "dev": true,
       "requires": {
         "extend-shallow": "^2.0.1",
@@ -5082,9 +5530,9 @@
       "dev": true
     },
     "sourcemap-codec": {
-      "version": "1.4.4",
-      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.4.tgz",
-      "integrity": "sha512-CYAPYdBu34781kLHkaW3m6b/uUSyMOC2R61gcYMWooeuaGtjof86ZA/8T+qVPPt7np1085CR9hmMGrySwEc8Xg==",
+      "version": "1.4.6",
+      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.6.tgz",
+      "integrity": "sha512-1ZooVLYFxC448piVLBbtOxFcXwnymH9oUF8nRd3CuYDVvkRBxRl6pB4Mtas5a4drtL+E8LDgFkQNcgIw6tc8Hg==",
       "dev": true
     },
     "split": {
@@ -5148,10 +5596,13 @@
       "dev": true
     },
     "string_decoder": {
-      "version": "0.10.31",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
-      "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
-      "dev": true
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "~5.1.0"
+      }
     },
     "systemjs": {
       "version": "0.21.6",
@@ -5231,44 +5682,21 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.5.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.2.tgz",
-      "integrity": "sha512-7KxJovlYhTX5RaRbUdkAXN1KUZ8PwWlTzQdHV6xNqvuFOs7+WBo10TQUqT19Q/Jz2hk5v9TQDIhyLhhJY4p5AA==",
+      "version": "3.5.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.3.tgz",
+      "integrity": "sha512-ACzBtm/PhXBDId6a6sDJfroT2pOWt/oOnk4/dElG5G33ZL776N3Y6/6bKZJBFpd+b05F3Ct9qDjMeJmRWtE2/g==",
       "dev": true
     },
     "union-value": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz",
-      "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",
+      "integrity": "sha512-tJfXmxMeWYnczCVs7XAEvIV7ieppALdyepWMkHkwciRpZraG/xwT+s2JN8+pr1+8jCRf80FFzvr+MpQeeoF4Xg==",
       "dev": true,
       "requires": {
         "arr-union": "^3.1.0",
         "get-value": "^2.0.6",
         "is-extendable": "^0.1.1",
-        "set-value": "^0.4.3"
-      },
-      "dependencies": {
-        "extend-shallow": {
-          "version": "2.0.1",
-          "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
-          "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
-          "dev": true,
-          "requires": {
-            "is-extendable": "^0.1.0"
-          }
-        },
-        "set-value": {
-          "version": "0.4.3",
-          "resolved": "https://registry.npmjs.org/set-value/-/set-value-0.4.3.tgz",
-          "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=",
-          "dev": true,
-          "requires": {
-            "extend-shallow": "^2.0.1",
-            "is-extendable": "^0.1.1",
-            "is-plain-object": "^2.0.1",
-            "to-object-path": "^0.3.0"
-          }
-        }
+        "set-value": "^2.0.1"
       }
     },
     "universalify": {
@@ -5341,6 +5769,15 @@
       "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
       "dev": true
     },
+    "url": {
+      "version": "0.11.0",
+      "resolved": "https://registry.npmjs.org/url/-/url-0.11.0.tgz",
+      "integrity": "sha1-ODjpfPxgUh63PFJajlW/3Z4uKPE=",
+      "requires": {
+        "punycode": "1.3.2",
+        "querystring": "0.2.0"
+      }
+    },
     "use": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
@@ -5372,12 +5809,13 @@
       "dev": true
     },
     "websocket-driver": {
-      "version": "0.7.0",
-      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.0.tgz",
-      "integrity": "sha1-DK+dLXVdk67gSdS90NP+LMoqJOs=",
+      "version": "0.7.3",
+      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.3.tgz",
+      "integrity": "sha512-bpxWlvbbB459Mlipc5GBzzZwhoZgGEZLuqPaR0INBGnPAY1vdBX6hPnoFXiw+3yWxDuHyQjO2oXTMyS8A5haFg==",
       "dev": true,
       "requires": {
-        "http-parser-js": ">=0.4.0",
+        "http-parser-js": ">=0.4.0 <0.4.11",
+        "safe-buffer": ">=5.1.0",
         "websocket-extensions": ">=0.1.1"
       }
     },
diff --git a/package.json b/package.json
index 07cf1ea..8aafc46 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,9 @@
     "build": "tsc",
     "rollup": "rollup -c",
     "watch": "npx live-server --open=index.html --watch='./*.html,./*.js'",
-    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./*.js'"
+    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./src/*.js'",
+    "pixi": "cd pixi.js && npm run local && cd .. && npm run pixi:install",
+    "pixi:install": "rm -rf node_modules/pixi.js && rm package-lock.json"
   },
   "repository": {
     "type": "git",
@@ -17,13 +19,15 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@types/systemjs": "^0.20.6",
+    "@types/webgl2": "0.0.5",
     "imgui-js": "file:./imgui-js",
+    "pixi.js": "file:pixi.js/bundles/pixi.js/pixi.js-5.1.4.tgz",
     "rollup": "^1.15.6",
     "systemjs": "^0.21.5"
   },
   "devDependencies": {
     "@types/node": "^12.0.0",
+    "@types/systemjs": "^0.20.6",
     "live-server": "^1.2.1",
     "rollup-plugin-commonjs": "^10.0.0",
     "rollup-plugin-node-builtins": "^2.1.2",
diff --git a/pixi.js b/pixi.js
new file mode 160000
index 0000000..1b78731
--- /dev/null
+++ b/pixi.js
@@ -0,0 +1 @@
+Subproject commit 1b78731948b57c635a2e65444c387eed31ec7428
diff --git a/session b/session
index bbf5582..06b9a8d 100644
--- a/session
+++ b/session
@@ -1,322 +1,62 @@
 let SessionLoad = 1
 if &cp | set nocp | endif
-let s:cpo_save=&cpo
-set cpo&vim
-imap <Nul> <C-Space>
-inoremap <expr> <Up> pumvisible() ? "\" : "\<Up>"
-inoremap <expr> <S-Tab> pumvisible() ? "\" : "\<S-Tab>"
-inoremap <expr> <Down> pumvisible() ? "\" : "\<Down>"
-nnoremap <silent>  :TmuxNavigateLeft
-nnoremap <silent> <NL> :TmuxNavigateDown
-nnoremap <silent>  :TmuxNavigateUp
-nnoremap <silent>  :TmuxNavigateRight
-nnoremap <silent>  :TmuxNavigatePrevious
-nnoremap \d :YcmShowDetailedDiagnostic
-vnoremap <silent> \c :call CopyMarkWithCursor("<", ">")
-nnoremap <silent> \c :set opfunc=OpSysCopyMarkg@
-vmap gx <Plug>NetrwBrowseXVis
-nmap gx <Plug>NetrwBrowseX
-vnoremap <silent> <Plug>NetrwBrowseXVis :call netrw#BrowseXVis()
-nnoremap <silent> <Plug>NetrwBrowseX :call netrw#BrowseX(expand((exists("g:netrw_gx")? g:netrw_gx : '<cfile>')),netrw#CheckIfRemote())
-inoremap <expr> 	 pumvisible() ? "\" : "\	"
-let &cpo=s:cpo_save
-unlet s:cpo_save
-set autoindent
-set backspace=indent,eol,start
-set completefunc=youcompleteme#CompleteFunc
-set completeopt=preview,menuone
-set cpoptions=aAceFsB
-set fileencodings=ucs-bom,utf-8,default,latin1
-set fillchars=vert:|,fold:-,vert:│
-set helplang=en
-set hidden
-set include=import_s.\\zs[^'\"]*\\ze
-set includeexpr=TsIncludeExpr(v:fname)
-set nomodeline
-set path=.,/usr/include,,,./node_modules/**,node_modules/**
-set ruler
-set runtimepath=~/.vim,~/.vim/bundle/JustDo,~/.vim/bundle/YouCompleteMe,~/.vim/bundle/vim-easymotion,~/.vim/bundle/vim-tmux-navigator,~/.vim/bundle/yats.vim,/var/lib/vim/addons,/usr/share/vim/vimfiles,/usr/share/vim/vim74,/usr/share/vim/vimfiles/after,/var/lib/vim/addons/after,~/.vim/after
-set sessionoptions=blank,buffers,folds,help,options,tabpages,winsize,sesdir
-set shortmess=filnxtToOc
-set suffixes=.bak,~,.swp,.o,.info,.aux,.log,.dvi,.bbl,.blg,.brf,.cb,.ind,.idx,.ilg,.inx,.out,.toc
-set suffixesadd=.ts
 let s:so_save = &so | let s:siso_save = &siso | set so=0 siso=0
 let v:this_session=expand("<sfile>:p")
 silent only
+silent tabonly
 exe "cd " . escape(expand("<sfile>:p:h"), ' ')
 if expand('%') == '' && !&modified && line('$') <= 1 && getline(1) == ''
   let s:wipebuf = bufnr('%')
 endif
 set shortmess=aoO
+argglobal
+%argdel
+edit src/imgui_impl.ts
+set splitbelow splitright
+set nosplitbelow
+set nosplitright
+wincmd t
+set winminheight=0
+set winheight=1
+set winminwidth=0
+set winwidth=1
+argglobal
+let s:l = 1 - ((0 * winheight(0) + 21) / 42)
+if s:l < 1 | let s:l = 1 | endif
+exe s:l
+normal! zt
+1
+normal! 0
+tabnext 1
+badd +0 src/imgui_impl.ts
 badd +12 rollup.config.js
 badd +7 imgui-js/rollup.config.js
-badd +7 imgui-js/tsconfig.json
-badd +26 tsconfig.json
+badd +4 imgui-js/tsconfig.json
+badd +12 tsconfig.json
 badd +1 index.js
 badd +3904 imgui-js/imgui.ts
-badd +39 src/main.ts
+badd +80 src/main.ts
 badd +52 imgui-js/example/main.ts
-badd +8 package.json
+badd +34 package.json
 badd +1 imgui-js/dist/imgui.d.ts
 badd +1 imgui-js/bind-imgui.js
 badd +1 imgui-js/example/imgui_impl.js
 badd +2 imgui-js/example/imgui_impl.ts
 badd +295 imgui-js/imgui_demo.ts
 badd +4 index.html
-badd +14 indexdev.html
+badd +4 indexdev.html
 badd +6 imgui-js/example/index.html
-badd +2 imgui-js/example/system.config.js
+badd +6 imgui-js/example/system.config.js
 badd +40 imgui-js/package.json
-badd +201 node_modules/systemjs/dist/system.js
-argglobal
-silent! argdel *
-edit package.json
-set splitbelow splitright
-wincmd _ | wincmd |
-split
-1wincmd k
-wincmd w
-set nosplitbelow
-set nosplitright
-wincmd t
-set winheight=1 winwidth=1
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-argglobal
-enew
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=wipe
-setlocal buflisted
-setlocal buftype=nofile
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=s1:/*,mb:*,ex:*/,://,b:#,:%,:XCOMM,n:>,fb:-
-setlocal commentstring=/*%s*/
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != ''
-setlocal filetype=
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=tcq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=
-setlocal indentkeys=0{,0},:,0#,!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal nomodifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal previewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal noswapfile
-setlocal synmaxcol=3000
-if &syntax != ''
-setlocal syntax=
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal winfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-wincmd w
-argglobal
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=
-setlocal buflisted
-setlocal buftype=
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=
-setlocal commentstring=
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != 'json'
-setlocal filetype=json
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=cq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=GetJSONIndent()
-setlocal indentkeys=0{,0},0),0[,0],!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal modifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal nopreviewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal swapfile
-setlocal synmaxcol=3000
-if &syntax != 'json'
-setlocal syntax=json
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal nowinfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-silent! normal! zE
-let s:l = 23 - ((19 * winheight(0) + 15) / 31)
-if s:l < 1 | let s:l = 1 | endif
-exe s:l
-normal! zt
-23
-normal! 024|
-wincmd w
-2wincmd w
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-tabnext 1
-if exists('s:wipebuf')
+badd +1 node_modules/systemjs/dist/system.js
+badd +1 src/main.js
+badd +1 imgui-js/example/main.js
+if exists('s:wipebuf') && len(win_findbuf(s:wipebuf)) == 0
   silent exe 'bwipe ' . s:wipebuf
 endif
 unlet! s:wipebuf
 set winheight=1 winwidth=20 shortmess=filnxtToOc
+set winminheight=1 winminwidth=1
 let s:sx = expand("<sfile>:p:r")."x.vim"
 if file_readable(s:sx)
   exe "source " . fnameescape(s:sx)

diff --git a/.gitmodules b/.gitmodules
index d6b45d7..fc2be7a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,7 @@
 [submodule "emsdk"]
 	path = emsdk
 	url = https://github.com/emscripten-core/emsdk.git
+	ignore = untracked
+[submodule "pixi.js"]
+	path = pixi.js
+	url = https://git.mhack.io/git/mark/pixi.js.git
diff --git a/imgui-js b/imgui-js
index 9f694ef..9536eca 160000
--- a/imgui-js
+++ b/imgui-js
@@ -1 +1 @@
-Subproject commit 9f694ef7e8e7251c32f7811ba39938951a12097a
+Subproject commit 9536ecad287eb76812087cd3fee1aaacb448c027
diff --git a/indexdev.html b/indexdev.html
index 2f6c3b3..3d27479 100644
--- a/indexdev.html
+++ b/indexdev.html
@@ -2,22 +2,16 @@
     <head>
         <title>7GUI</title>
         <script src="node_modules/systemjs/dist/system.js"></script>
-        <!--
-        <script type="systemjs-importmap">
-            {
-                "imports": {
-                    "imgui-js/example/imgui_impl": "imgui-js/dist/imgui_impl.umd.js"
-                }
-            }
-        </script>
-        -->
         <script>
             System.config({
                 map: {
-                    "imgui-js": "./imgui-js"
+                    "imgui-js": "./imgui-js",
+                    "pixi.js": "./node_modules/pixi.js"
                 },
                 packages: {
-                    "imgui-js": { main: "imgui.js", }
+                    "imgui-js": { main: "imgui.js" },
+                    "pixi.js": { main: "dist/pixi.js" },
+                    "./": { map: { "src/utils": "./src/utils.js", "src/imgui_impl": "./src/imgui_impl.js" } }
                 }
             });
             System.import("./src/main.js");
diff --git a/package-lock.json b/package-lock.json
index ed52494..8bda7e5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,16 +4,34 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@pixi/constants": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/constants/-/constants-5.1.0.tgz",
+      "integrity": "sha512-86cogDvjF9yNvmxeizwkIhA0Kl2z3gUSWMf2daYx903dzyje7fwkzRrKLnqDUn6vSAxRXiska0DMJhwYsIC29w=="
+    },
+    "@pixi/math": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/math/-/math-5.1.0.tgz",
+      "integrity": "sha512-Vf9W4SgYRRQMdSq8tFViKKKGCU3iklf0RDzd+wzp4gezOxe3m0PLB7XKwvVrP1hRjUh49zIAL9JBpYREPS1EMw=="
+    },
+    "@pixi/polyfill": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/polyfill/-/polyfill-5.1.0.tgz",
+      "integrity": "sha512-8M3nYCO0a599fsdLW7wv9SBYriMqS1QckKAkRuN2JualRuK/GjxZjm5Vcbcwc1gGONRUKZroH12CuPyTcU2HnQ==",
+      "requires": {
+        "es6-promise-polyfill": "^1.2.0",
+        "object-assign": "^4.1.1"
+      }
+    },
     "@types/estree": {
       "version": "0.0.39",
       "resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.39.tgz",
       "integrity": "sha512-EYNwp3bU+98cpU4lAWYYL7Zz+2gryWH1qbdDTidVd6hkiR6weksdbMadyXKXNPEkQFhXM+hVO9ZygomHXp+AIw=="
     },
     "@types/node": {
-      "version": "12.0.7",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.0.7.tgz",
-      "integrity": "sha512-1YKeT4JitGgE4SOzyB9eMwO0nGVNkNEsm9qlIt1Lqm/tG2QEiSMTD4kS3aO6L+w5SClLVxALmIBESK6Mk5wX0A==",
-      "dev": true
+      "version": "12.6.8",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.6.8.tgz",
+      "integrity": "sha512-aX+gFgA5GHcDi89KG5keey2zf0WfZk/HAQotEamsK2kbey+8yGKcson0hbK8E+v0NArlCJQCqMP161YhV6ZXLg=="
     },
     "@types/resolve": {
       "version": "0.0.8",
@@ -27,7 +45,13 @@
     "@types/systemjs": {
       "version": "0.20.6",
       "resolved": "https://registry.npmjs.org/@types/systemjs/-/systemjs-0.20.6.tgz",
-      "integrity": "sha512-p3yv9sBBJXi3noUG216BpUI7VtVBUAvBIfZNTiDROUY31YBfsFHM4DreS7XMekN8IjtX0ysvCnm6r3WnirnNeA=="
+      "integrity": "sha512-p3yv9sBBJXi3noUG216BpUI7VtVBUAvBIfZNTiDROUY31YBfsFHM4DreS7XMekN8IjtX0ysvCnm6r3WnirnNeA==",
+      "dev": true
+    },
+    "@types/webgl2": {
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/@types/webgl2/-/webgl2-0.0.5.tgz",
+      "integrity": "sha512-oGaKsBbxQOY5+aJFV3KECDhGaXt+yZJt2y/OZsnQGLRkH6Fvr7rv4pCt3SRH1somIHfej/c4u7NSpCyd9x+1Ow=="
     },
     "abstract-leveldown": {
       "version": "0.12.4",
@@ -57,9 +81,9 @@
       }
     },
     "acorn": {
-      "version": "6.1.1",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.1.1.tgz",
-      "integrity": "sha512-jPTiwtOxaHNaAPg/dmrJ/beuzLRnXtB0kQPQ8JpotKJgTB6rX6c8mlf315941pyjBSaPg8NHXS9fhP4u17DpGA=="
+      "version": "6.2.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.2.0.tgz",
+      "integrity": "sha512-8oe72N3WPMjA+2zVG71Ia0nXZ8DpQH+QyyHO+p06jT8eg8FGG3FbcUIi8KziHlAfheJQZeoqbvq1mQSQHXKYLw=="
     },
     "anymatch": {
       "version": "2.0.0",
@@ -258,6 +282,12 @@
             "isarray": "0.0.1",
             "string_decoder": "~0.10.x"
           }
+        },
+        "string_decoder": {
+          "version": "0.10.31",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
+          "dev": true
         }
       }
     },
@@ -485,12 +515,6 @@
         "object-visit": "^1.0.0"
       }
     },
-    "colors": {
-      "version": "1.3.3",
-      "resolved": "https://registry.npmjs.org/colors/-/colors-1.3.3.tgz",
-      "integrity": "sha512-mmGt/1pZqYRjMxB1axhTo16/snVZ5krrKkcmMeVKxzECMMXoCgnvTPp10QgHfcbQZw8Dq2jMNG6je4JlWU0gWg==",
-      "dev": true
-    },
     "component-emitter": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.3.0.tgz",
@@ -533,16 +557,6 @@
       "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
       "dev": true
     },
-    "cors": {
-      "version": "2.8.5",
-      "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
-      "integrity": "sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==",
-      "dev": true,
-      "requires": {
-        "object-assign": "^4",
-        "vary": "^1"
-      }
-    },
     "create-ecdh": {
       "version": "4.0.3",
       "resolved": "https://registry.npmjs.org/create-ecdh/-/create-ecdh-4.0.3.tgz",
@@ -703,6 +717,11 @@
       "integrity": "sha1-rOb/gIwc5mtX0ev5eXessCM0z8E=",
       "dev": true
     },
+    "earcut": {
+      "version": "2.1.5",
+      "resolved": "https://registry.npmjs.org/earcut/-/earcut-2.1.5.tgz",
+      "integrity": "sha512-QFWC7ywTVLtvRAJTVp8ugsuuGQ5mVqNmJ1cRYeLrSHgP3nycr2RHTJob9OtM0v8ujuoKN0NY1a93J/omeTL1PA=="
+    },
     "ee-first": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
@@ -739,6 +758,11 @@
         "prr": "~1.0.1"
       }
     },
+    "es6-promise-polyfill": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/es6-promise-polyfill/-/es6-promise-polyfill-1.2.0.tgz",
+      "integrity": "sha1-84kl8jyz4+jObNqP93T867sJDN4="
+    },
     "escape-html": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
@@ -772,6 +796,11 @@
         "through": "~2.3.1"
       }
     },
+    "eventemitter3": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-3.1.2.tgz",
+      "integrity": "sha512-tvtQIeLVHjDkJYnzf2dgVMxfuSGJeM/7UCG17TT4EumTfNtF+0nebF/4zWOIkCreAbtNqhGEboB6BWrwqNaw4Q=="
+    },
     "evp_bytestokey": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/evp_bytestokey/-/evp_bytestokey-1.0.3.tgz",
@@ -904,9 +933,9 @@
       }
     },
     "faye-websocket": {
-      "version": "0.11.1",
-      "resolved": "https://registry.npmjs.org/faye-websocket/-/faye-websocket-0.11.1.tgz",
-      "integrity": "sha1-8O/hjE9W5PQK/H4Gxxn9XuYYjzg=",
+      "version": "0.11.3",
+      "resolved": "https://registry.npmjs.org/faye-websocket/-/faye-websocket-0.11.3.tgz",
+      "integrity": "sha512-D2y4bovYpzziGgbHYtGCMjlJM36vAl/y+xUyn1C+FVx8szd1E+86KwVw6XvYSzOP8iMpm1X0I4xJD+QtUb36OA==",
       "dev": true,
       "requires": {
         "websocket-driver": ">=0.5.1"
@@ -1568,6 +1597,12 @@
             "isarray": "0.0.1",
             "string_decoder": "~0.10.x"
           }
+        },
+        "string_decoder": {
+          "version": "0.10.31",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
+          "dev": true
         }
       }
     },
@@ -1599,9 +1634,9 @@
       }
     },
     "graceful-fs": {
-      "version": "4.1.15",
-      "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.1.15.tgz",
-      "integrity": "sha512-6uHUhOPEBgQ24HM+r6b/QwWfZq+yiFcipKFrOFiBEnWdy5sdzYoi+pJeQaPI5qOLRFqWmAXUPQNsielzdLoecA==",
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.0.tgz",
+      "integrity": "sha512-jpSvDPV4Cq/bgtpndIWbI5hmYxhQGHPC4d4cqBPb4DLniCfhJokdXhwhaDuLBGLQdvvRum/UiX6ECVIPvDXqdg==",
       "dev": true
     },
     "has-value": {
@@ -1680,22 +1715,22 @@
       }
     },
     "http-errors": {
-      "version": "1.7.2",
-      "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.7.2.tgz",
-      "integrity": "sha512-uUQBt3H/cSIVfch6i1EuPNy/YsRSOUBXTVfZ+yR7Zjez3qjBz6i9+i4zjNaoqcoFVI4lQJ5plg63TvGfRSDCRg==",
+      "version": "1.7.3",
+      "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.7.3.tgz",
+      "integrity": "sha512-ZTTX0MWrsQ2ZAhA1cejAwDLycFsd7I7nVtnkT3Ol0aqodaKW+0CTZDQ1uBv5whptCnc8e8HeRRJxRs0kmm/Qfw==",
       "dev": true,
       "requires": {
         "depd": "~1.1.2",
-        "inherits": "2.0.3",
+        "inherits": "2.0.4",
         "setprototypeof": "1.1.1",
         "statuses": ">= 1.5.0 < 2",
         "toidentifier": "1.0.0"
       }
     },
     "http-parser-js": {
-      "version": "0.5.0",
-      "resolved": "https://registry.npmjs.org/http-parser-js/-/http-parser-js-0.5.0.tgz",
-      "integrity": "sha512-cZdEF7r4gfRIq7ezX9J0T+kQmJNOub71dWbgAXVHDct80TKP4MCETtZQ31xyv38UwgzkWPYF/Xc0ge55dW9Z9w==",
+      "version": "0.4.10",
+      "resolved": "https://registry.npmjs.org/http-parser-js/-/http-parser-js-0.4.10.tgz",
+      "integrity": "sha1-ksnBN0w1CF912zWexWzCV8u5P6Q=",
       "dev": true
     },
     "idb-wrapper": {
@@ -3790,9 +3825,9 @@
       "dev": true
     },
     "inherits": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
-      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
       "dev": true
     },
     "is": {
@@ -3938,9 +3973,9 @@
       }
     },
     "is-reference": {
-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/is-reference/-/is-reference-1.1.2.tgz",
-      "integrity": "sha512-Kn5g8c7XHKejFOpTf2QN9YjiHHKl5xRj+2uAZf9iM2//nkBNi/NNeB5JMoun28nEaUVHyPUzqzhfRlfAirEjXg==",
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/is-reference/-/is-reference-1.1.3.tgz",
+      "integrity": "sha512-W1iHHv/oyBb2pPxkBxtaewxa1BC58Pn5J0hogyCdefwUIvb6R+TGbAcIa4qPNYLqLhb3EnOgUf2MQkkF76BcKw==",
       "dev": true,
       "requires": {
         "@types/estree": "0.0.39"
@@ -3970,6 +4005,11 @@
       "integrity": "sha1-OMFG2d9Si4v5sHAcPUPPEt8/w5s=",
       "dev": true
     },
+    "ismobilejs": {
+      "version": "0.5.2",
+      "resolved": "https://registry.npmjs.org/ismobilejs/-/ismobilejs-0.5.2.tgz",
+      "integrity": "sha512-ta9UdV60xVZk/ZafFtSFslQaE76SvNkcs1r73d2PVR21zVzx9xuYv9tNe4MxA1NN7WoeCc2RjGot3Bz1eHDx3Q=="
+    },
     "isobject": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/isobject/-/isobject-3.0.1.tgz",
@@ -4019,6 +4059,12 @@
             "isarray": "0.0.1",
             "string_decoder": "~0.10.x"
           }
+        },
+        "string_decoder": {
+          "version": "0.10.31",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
+          "dev": true
         }
       }
     },
@@ -4166,6 +4212,12 @@
             "string_decoder": "~0.10.x"
           }
         },
+        "string_decoder": {
+          "version": "0.10.31",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
+          "dev": true
+        },
         "xtend": {
           "version": "3.0.0",
           "resolved": "https://registry.npmjs.org/xtend/-/xtend-3.0.0.tgz",
@@ -4195,11 +4247,69 @@
         "serve-index": "^1.9.1"
       },
       "dependencies": {
+        "colors": {
+          "version": "1.3.3",
+          "resolved": "https://registry.npmjs.org/colors/-/colors-1.3.3.tgz",
+          "integrity": "sha512-mmGt/1pZqYRjMxB1axhTo16/snVZ5krrKkcmMeVKxzECMMXoCgnvTPp10QgHfcbQZw8Dq2jMNG6je4JlWU0gWg==",
+          "dev": true
+        },
+        "cors": {
+          "version": "2.8.5",
+          "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
+          "integrity": "sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==",
+          "dev": true,
+          "requires": {
+            "object-assign": "^4",
+            "vary": "^1"
+          }
+        },
+        "ms": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
+          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
+          "dev": true
+        },
         "object-assign": {
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@@ -4607,6 +5077,16 @@
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@@ -4846,35 +5317,6 @@
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@@ -4902,6 +5344,12 @@
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+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+          "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
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@@ -4911,9 +5359,9 @@
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@@ -5082,9 +5530,9 @@
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+      "version": "1.4.6",
+      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.6.tgz",
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@@ -5148,10 +5596,13 @@
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-      "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
-      "dev": true
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+      "dev": true,
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@@ -5231,44 +5682,21 @@
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+      "version": "3.5.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.3.tgz",
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-      "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",
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+        "set-value": "^2.0.1"
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@@ -5341,6 +5769,15 @@
       "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
       "dev": true
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+    "url": {
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+      "resolved": "https://registry.npmjs.org/url/-/url-0.11.0.tgz",
+      "integrity": "sha1-ODjpfPxgUh63PFJajlW/3Z4uKPE=",
+      "requires": {
+        "punycode": "1.3.2",
+        "querystring": "0.2.0"
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@@ -5372,12 +5809,13 @@
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-      "integrity": "sha1-DK+dLXVdk67gSdS90NP+LMoqJOs=",
+      "version": "0.7.3",
+      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.3.tgz",
+      "integrity": "sha512-bpxWlvbbB459Mlipc5GBzzZwhoZgGEZLuqPaR0INBGnPAY1vdBX6hPnoFXiw+3yWxDuHyQjO2oXTMyS8A5haFg==",
       "dev": true,
       "requires": {
-        "http-parser-js": ">=0.4.0",
+        "http-parser-js": ">=0.4.0 <0.4.11",
+        "safe-buffer": ">=5.1.0",
         "websocket-extensions": ">=0.1.1"
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     },
diff --git a/package.json b/package.json
index 07cf1ea..8aafc46 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,9 @@
     "build": "tsc",
     "rollup": "rollup -c",
     "watch": "npx live-server --open=index.html --watch='./*.html,./*.js'",
-    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./*.js'"
+    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./src/*.js'",
+    "pixi": "cd pixi.js && npm run local && cd .. && npm run pixi:install",
+    "pixi:install": "rm -rf node_modules/pixi.js && rm package-lock.json"
   },
   "repository": {
     "type": "git",
@@ -17,13 +19,15 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@types/systemjs": "^0.20.6",
+    "@types/webgl2": "0.0.5",
     "imgui-js": "file:./imgui-js",
+    "pixi.js": "file:pixi.js/bundles/pixi.js/pixi.js-5.1.4.tgz",
     "rollup": "^1.15.6",
     "systemjs": "^0.21.5"
   },
   "devDependencies": {
     "@types/node": "^12.0.0",
+    "@types/systemjs": "^0.20.6",
     "live-server": "^1.2.1",
     "rollup-plugin-commonjs": "^10.0.0",
     "rollup-plugin-node-builtins": "^2.1.2",
diff --git a/pixi.js b/pixi.js
new file mode 160000
index 0000000..1b78731
--- /dev/null
+++ b/pixi.js
@@ -0,0 +1 @@
+Subproject commit 1b78731948b57c635a2e65444c387eed31ec7428
diff --git a/session b/session
index bbf5582..06b9a8d 100644
--- a/session
+++ b/session
@@ -1,322 +1,62 @@
 let SessionLoad = 1
 if &cp | set nocp | endif
-let s:cpo_save=&cpo
-set cpo&vim
-imap <Nul> <C-Space>
-inoremap <expr> <Up> pumvisible() ? "\" : "\<Up>"
-inoremap <expr> <S-Tab> pumvisible() ? "\" : "\<S-Tab>"
-inoremap <expr> <Down> pumvisible() ? "\" : "\<Down>"
-nnoremap <silent>  :TmuxNavigateLeft
-nnoremap <silent> <NL> :TmuxNavigateDown
-nnoremap <silent>  :TmuxNavigateUp
-nnoremap <silent>  :TmuxNavigateRight
-nnoremap <silent>  :TmuxNavigatePrevious
-nnoremap \d :YcmShowDetailedDiagnostic
-vnoremap <silent> \c :call CopyMarkWithCursor("<", ">")
-nnoremap <silent> \c :set opfunc=OpSysCopyMarkg@
-vmap gx <Plug>NetrwBrowseXVis
-nmap gx <Plug>NetrwBrowseX
-vnoremap <silent> <Plug>NetrwBrowseXVis :call netrw#BrowseXVis()
-nnoremap <silent> <Plug>NetrwBrowseX :call netrw#BrowseX(expand((exists("g:netrw_gx")? g:netrw_gx : '<cfile>')),netrw#CheckIfRemote())
-inoremap <expr> 	 pumvisible() ? "\" : "\	"
-let &cpo=s:cpo_save
-unlet s:cpo_save
-set autoindent
-set backspace=indent,eol,start
-set completefunc=youcompleteme#CompleteFunc
-set completeopt=preview,menuone
-set cpoptions=aAceFsB
-set fileencodings=ucs-bom,utf-8,default,latin1
-set fillchars=vert:|,fold:-,vert:│
-set helplang=en
-set hidden
-set include=import_s.\\zs[^'\"]*\\ze
-set includeexpr=TsIncludeExpr(v:fname)
-set nomodeline
-set path=.,/usr/include,,,./node_modules/**,node_modules/**
-set ruler
-set runtimepath=~/.vim,~/.vim/bundle/JustDo,~/.vim/bundle/YouCompleteMe,~/.vim/bundle/vim-easymotion,~/.vim/bundle/vim-tmux-navigator,~/.vim/bundle/yats.vim,/var/lib/vim/addons,/usr/share/vim/vimfiles,/usr/share/vim/vim74,/usr/share/vim/vimfiles/after,/var/lib/vim/addons/after,~/.vim/after
-set sessionoptions=blank,buffers,folds,help,options,tabpages,winsize,sesdir
-set shortmess=filnxtToOc
-set suffixes=.bak,~,.swp,.o,.info,.aux,.log,.dvi,.bbl,.blg,.brf,.cb,.ind,.idx,.ilg,.inx,.out,.toc
-set suffixesadd=.ts
 let s:so_save = &so | let s:siso_save = &siso | set so=0 siso=0
 let v:this_session=expand("<sfile>:p")
 silent only
+silent tabonly
 exe "cd " . escape(expand("<sfile>:p:h"), ' ')
 if expand('%') == '' && !&modified && line('$') <= 1 && getline(1) == ''
   let s:wipebuf = bufnr('%')
 endif
 set shortmess=aoO
+argglobal
+%argdel
+edit src/imgui_impl.ts
+set splitbelow splitright
+set nosplitbelow
+set nosplitright
+wincmd t
+set winminheight=0
+set winheight=1
+set winminwidth=0
+set winwidth=1
+argglobal
+let s:l = 1 - ((0 * winheight(0) + 21) / 42)
+if s:l < 1 | let s:l = 1 | endif
+exe s:l
+normal! zt
+1
+normal! 0
+tabnext 1
+badd +0 src/imgui_impl.ts
 badd +12 rollup.config.js
 badd +7 imgui-js/rollup.config.js
-badd +7 imgui-js/tsconfig.json
-badd +26 tsconfig.json
+badd +4 imgui-js/tsconfig.json
+badd +12 tsconfig.json
 badd +1 index.js
 badd +3904 imgui-js/imgui.ts
-badd +39 src/main.ts
+badd +80 src/main.ts
 badd +52 imgui-js/example/main.ts
-badd +8 package.json
+badd +34 package.json
 badd +1 imgui-js/dist/imgui.d.ts
 badd +1 imgui-js/bind-imgui.js
 badd +1 imgui-js/example/imgui_impl.js
 badd +2 imgui-js/example/imgui_impl.ts
 badd +295 imgui-js/imgui_demo.ts
 badd +4 index.html
-badd +14 indexdev.html
+badd +4 indexdev.html
 badd +6 imgui-js/example/index.html
-badd +2 imgui-js/example/system.config.js
+badd +6 imgui-js/example/system.config.js
 badd +40 imgui-js/package.json
-badd +201 node_modules/systemjs/dist/system.js
-argglobal
-silent! argdel *
-edit package.json
-set splitbelow splitright
-wincmd _ | wincmd |
-split
-1wincmd k
-wincmd w
-set nosplitbelow
-set nosplitright
-wincmd t
-set winheight=1 winwidth=1
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-argglobal
-enew
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=wipe
-setlocal buflisted
-setlocal buftype=nofile
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=s1:/*,mb:*,ex:*/,://,b:#,:%,:XCOMM,n:>,fb:-
-setlocal commentstring=/*%s*/
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != ''
-setlocal filetype=
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=tcq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=
-setlocal indentkeys=0{,0},:,0#,!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal nomodifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal previewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal noswapfile
-setlocal synmaxcol=3000
-if &syntax != ''
-setlocal syntax=
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal winfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-wincmd w
-argglobal
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=
-setlocal buflisted
-setlocal buftype=
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=
-setlocal commentstring=
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != 'json'
-setlocal filetype=json
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=cq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=GetJSONIndent()
-setlocal indentkeys=0{,0},0),0[,0],!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal modifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal nopreviewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal swapfile
-setlocal synmaxcol=3000
-if &syntax != 'json'
-setlocal syntax=json
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal nowinfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-silent! normal! zE
-let s:l = 23 - ((19 * winheight(0) + 15) / 31)
-if s:l < 1 | let s:l = 1 | endif
-exe s:l
-normal! zt
-23
-normal! 024|
-wincmd w
-2wincmd w
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-tabnext 1
-if exists('s:wipebuf')
+badd +1 node_modules/systemjs/dist/system.js
+badd +1 src/main.js
+badd +1 imgui-js/example/main.js
+if exists('s:wipebuf') && len(win_findbuf(s:wipebuf)) == 0
   silent exe 'bwipe ' . s:wipebuf
 endif
 unlet! s:wipebuf
 set winheight=1 winwidth=20 shortmess=filnxtToOc
+set winminheight=1 winminwidth=1
 let s:sx = expand("<sfile>:p:r")."x.vim"
 if file_readable(s:sx)
   exe "source " . fnameescape(s:sx)
diff --git a/src/imgui_impl.js b/src/imgui_impl.js
new file mode 100644
index 0000000..416e4b2
--- /dev/null
+++ b/src/imgui_impl.js
@@ -0,0 +1,736 @@
+System.register(["imgui-js", "pixi.js", "./utils"], function (exports_1, context_1) {
+    "use strict";
+    var ImGui, PIXI, U, clipboard_text, contexts, contextIOs, isFirstWindow, ImGuiImplInternalRenderer, gl, app, ImGuiWindowLayer, ImGuiWindow, canvas, g_ShaderHandle, g_VertHandle, g_FragHandle, g_AttribLocationTex, g_AttribLocationProjMtx, g_AttribLocationPosition, g_AttribLocationUV, g_AttribLocationColor, g_VaoHandle, g_VboHandle, g_ElementsHandle, g_FontTexture, mouse_button_map;
+    var __moduleName = context_1 && context_1.id;
+    function document_on_copy(event) {
+        if (event.clipboardData) {
+            event.clipboardData.setData("text/plain", clipboard_text);
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function document_on_cut(event) {
+        if (event.clipboardData) {
+            event.clipboardData.setData("text/plain", clipboard_text);
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function document_on_paste(event) {
+        if (event.clipboardData) {
+            clipboard_text = event.clipboardData.getData("text/plain");
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function window_on_gamepadconnected(event /* GamepadEvent */) {
+        console.log("Gamepad connected at index %d: %s. %d buttons, %d axes.", event.gamepad.index, event.gamepad.id, event.gamepad.buttons.length, event.gamepad.axes.length);
+    }
+    function window_on_gamepaddisconnected(event /* GamepadEvent */) {
+        console.log("Gamepad disconnected at index %d: %s.", event.gamepad.index, event.gamepad.id);
+    }
+    function canvas_on_blur(event) {
+        for (var io of contextIOs) {
+            io.KeyCtrl = false;
+            io.KeyShift = false;
+            io.KeyAlt = false;
+            io.KeySuper = false;
+            for (let i = 0; i < io.KeysDown.length; ++i) {
+                io.KeysDown[i] = false;
+            }
+            for (let i = 0; i < io.MouseDown.length; ++i) {
+                io.MouseDown[i] = false;
+            }
+        }
+    }
+    function canvas_on_keydown(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.KeyCtrl = event.ctrlKey;
+            io.KeyShift = event.shiftKey;
+            io.KeyAlt = event.altKey;
+            io.KeySuper = event.metaKey;
+            ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+            io.KeysDown[event.keyCode] = true;
+            // forward to the keypress event
+            if ( /*io.WantCaptureKeyboard ||*/event.key === "Tab") {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_keyup(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.KeyCtrl = event.ctrlKey;
+            io.KeyShift = event.shiftKey;
+            io.KeyAlt = event.altKey;
+            io.KeySuper = event.metaKey;
+            ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+            io.KeysDown[event.keyCode] = false;
+            if (io.WantCaptureKeyboard) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_keypress(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.AddInputCharacter(event.charCode);
+            if (io.WantCaptureKeyboard) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_contextmenu(event) {
+        for (var io of contextIOs) {
+            if (io.WantCaptureMouse) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_wheel(event) {
+        for (var io of contextIOs) {
+            let scale = 1.0;
+            switch (event.deltaMode) {
+                case event.DOM_DELTA_PIXEL:
+                    scale = 0.01;
+                    break;
+                case event.DOM_DELTA_LINE:
+                    scale = 0.2;
+                    break;
+                case event.DOM_DELTA_PAGE:
+                    scale = 1.0;
+                    break;
+            }
+            io.MouseWheelH = event.deltaX * scale;
+            io.MouseWheel = -event.deltaY * scale; // Mouse wheel: 1 unit scrolls about 5 lines text.
+            if (io.WantCaptureMouse) {
+                event.preventDefault();
+            }
+        }
+    }
+    function PrePIXIInit() {
+        PIXI.Renderer.registerPlugin("imgui_renderer", U.fromConstructor(ImGuiImplInternalRenderer));
+    }
+    exports_1("PrePIXIInit", PrePIXIInit);
+    function Init(_app) {
+        // Setup Dear ImGui binding
+        ImGui.IMGUI_CHECKVERSION();
+        if (typeof (document) !== "undefined") {
+            document.body.addEventListener("copy", document_on_copy);
+            document.body.addEventListener("cut", document_on_cut);
+            document.body.addEventListener("paste", document_on_paste);
+        }
+        if (typeof (window) !== "undefined") {
+            window.addEventListener("gamepadconnected", window_on_gamepadconnected);
+            window.addEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+        }
+        app = _app;
+        gl = app.renderer.gl;
+        canvas = app.view;
+        gl.getExtension("EXT_color_buffer_float");
+        if (canvas !== null) {
+            canvas.style.touchAction = "none"; // Disable browser handling of all panning and zooming gestures.
+            canvas.addEventListener("blur", canvas_on_blur);
+            canvas.addEventListener("keydown", canvas_on_keydown);
+            canvas.addEventListener("keyup", canvas_on_keyup);
+            canvas.addEventListener("keypress", canvas_on_keypress);
+            canvas.addEventListener("contextmenu", canvas_on_contextmenu);
+            canvas.addEventListener("wheel", canvas_on_wheel);
+        }
+        CreateDeviceObjects();
+    }
+    exports_1("Init", Init);
+    function Shutdown() {
+        DestroyDeviceObjects();
+        if (canvas !== null) {
+            canvas.removeEventListener("blur", canvas_on_blur);
+            canvas.removeEventListener("keydown", canvas_on_keydown);
+            canvas.removeEventListener("keyup", canvas_on_keyup);
+            canvas.removeEventListener("keypress", canvas_on_keypress);
+            canvas.removeEventListener("contextmenu", canvas_on_contextmenu);
+            canvas.removeEventListener("wheel", canvas_on_wheel);
+        }
+        app = null;
+        canvas = null;
+        if (typeof (window) !== "undefined") {
+            window.removeEventListener("gamepadconnected", window_on_gamepadconnected);
+            window.removeEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+        }
+        if (typeof (document) !== "undefined") {
+            document.body.removeEventListener("copy", document_on_copy);
+            document.body.removeEventListener("cut", document_on_cut);
+            document.body.removeEventListener("paste", document_on_paste);
+        }
+    }
+    exports_1("Shutdown", Shutdown);
+    function CreateFontsTexture() {
+        const io = ImGui.GetIO();
+        // Backup GL state
+        const last_texture = gl && gl.getParameter(gl.TEXTURE_BINDING_2D);
+        // Build texture atlas
+        // const width: number = 256;
+        // const height: number = 256;
+        // const pixels: Uint8Array = new Uint8Array(4 * width * height).fill(0xff);
+        const { width, height, pixels } = io.Fonts.GetTexDataAsRGBA32(); // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+        // console.log(`font texture ${width} x ${height} @ ${pixels.length}`);
+        // Upload texture to graphics system
+        g_FontTexture = gl && gl.createTexture();
+        gl && gl.bindTexture(gl.TEXTURE_2D, g_FontTexture);
+        gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+        gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+        // gl && gl.pixelStorei(gl.UNPACK_ROW_LENGTH); // WebGL2
+        gl && gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+        // Store our identifier
+        io.Fonts.TexID = g_FontTexture || { foo: "bar" };
+        // console.log("font texture id", g_FontTexture);
+        // Restore modified GL state
+        gl && last_texture && gl.bindTexture(gl.TEXTURE_2D, last_texture);
+    }
+    function DestroyFontsTexture() {
+        const io = ImGui.GetIO();
+        io.Fonts.TexID = null;
+        gl && gl.deleteTexture(g_FontTexture);
+        g_FontTexture = null;
+    }
+    function CreateDeviceObjects() {
+        const vertex_shader = [
+            "#version 300 es",
+            "uniform mat4 ProjMtx;",
+            "in vec2 Position;",
+            "in vec2 UV;",
+            "in vec4 Color;",
+            "out vec2 Frag_UV;",
+            "out vec4 Frag_Color;",
+            "void main() {",
+            "	Frag_UV = UV;",
+            "	Frag_Color = Color;",
+            "	gl_Position = ProjMtx * vec4(Position.xy,0,1);",
+            "}",
+        ];
+        const fragment_shader = [
+            "#version 300 es",
+            "precision mediump float;",
+            "uniform sampler2D Texture;",
+            "in vec2 Frag_UV;",
+            "in vec4 Frag_Color;",
+            "out vec4 OutColor;",
+            "void main() {",
+            "	OutColor = Frag_Color * texture(Texture, Frag_UV);",
+            "}",
+        ];
+        g_ShaderHandle = gl && gl.createProgram();
+        g_VertHandle = gl && gl.createShader(gl.VERTEX_SHADER);
+        g_FragHandle = gl && gl.createShader(gl.FRAGMENT_SHADER);
+        gl && gl.shaderSource(g_VertHandle, vertex_shader.join("\n"));
+        gl && gl.shaderSource(g_FragHandle, fragment_shader.join("\n"));
+        gl && gl.compileShader(g_VertHandle);
+        gl && gl.compileShader(g_FragHandle);
+        gl && gl.attachShader(g_ShaderHandle, g_VertHandle);
+        gl && gl.attachShader(g_ShaderHandle, g_FragHandle);
+        gl && gl.linkProgram(g_ShaderHandle);
+        g_AttribLocationTex = gl && gl.getUniformLocation(g_ShaderHandle, "Texture");
+        g_AttribLocationProjMtx = gl && gl.getUniformLocation(g_ShaderHandle, "ProjMtx");
+        g_AttribLocationPosition = gl && gl.getAttribLocation(g_ShaderHandle, "Position") || 0;
+        g_AttribLocationUV = gl && gl.getAttribLocation(g_ShaderHandle, "UV") || 0;
+        g_AttribLocationColor = gl && gl.getAttribLocation(g_ShaderHandle, "Color") || 0;
+        g_VaoHandle = gl && gl.createVertexArray();
+        g_VboHandle = gl && gl.createBuffer();
+        g_ElementsHandle = gl && gl.createBuffer();
+    }
+    function DestroyDeviceObjects() {
+        DestroyFontsTexture();
+        gl && gl.deleteVertexArray(g_VaoHandle);
+        g_VaoHandle = null;
+        gl && gl.deleteBuffer(g_VboHandle);
+        g_VboHandle = null;
+        gl && gl.deleteBuffer(g_ElementsHandle);
+        g_ElementsHandle = null;
+        g_AttribLocationTex = null;
+        g_AttribLocationProjMtx = null;
+        g_AttribLocationPosition = -1;
+        g_AttribLocationUV = -1;
+        g_AttribLocationColor = -1;
+        gl && gl.deleteProgram(g_ShaderHandle);
+        g_ShaderHandle = null;
+        gl && gl.deleteShader(g_VertHandle);
+        g_VertHandle = null;
+        gl && gl.deleteShader(g_FragHandle);
+        g_FragHandle = null;
+    }
+    return {
+        setters: [
+            function (ImGui_1) {
+                ImGui = ImGui_1;
+            },
+            function (PIXI_1) {
+                PIXI = PIXI_1;
+            },
+            function (U_1) {
+                U = U_1;
+            }
+        ],
+        execute: function () {
+            clipboard_text = "";
+            contexts = [];
+            contextIOs = [];
+            isFirstWindow = true;
+            ImGuiImplInternalRenderer = class ImGuiImplInternalRenderer extends PIXI.ObjectRenderer {
+                constructor(r) {
+                    super(r);
+                }
+                render(owner) {
+                    if (!(owner instanceof ImGuiWindowLayer))
+                        return;
+                    const window = owner.window;
+                    const io = window.io;
+                    const draw_data = ImGui.GetDrawData();
+                    if (draw_data === null) {
+                        throw new Error();
+                    }
+                    gl || console.log(draw_data);
+                    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+                    const fb_width = io.DisplaySize.x * io.DisplayFramebufferScale.x;
+                    const fb_height = io.DisplaySize.y * io.DisplayFramebufferScale.y;
+                    if (fb_width === 0 || fb_height === 0) {
+                        return;
+                    }
+                    draw_data.ScaleClipRects(io.DisplayFramebufferScale);
+                    // Backup GL state
+                    const last_program = gl && gl.getParameter(gl.CURRENT_PROGRAM) || null;
+                    const last_active_texture = gl && gl.getParameter(gl.ACTIVE_TEXTURE) || null;
+                    gl && gl.activeTexture(gl.TEXTURE0);
+                    const last_texture0 = gl && gl.getParameter(gl.TEXTURE_BINDING_2D) || null;
+                    const last_vertex_array = gl && gl.getParameter(gl.VERTEX_ARRAY_BINDING) || null;
+                    const last_array_buffer = gl && gl.getParameter(gl.ARRAY_BUFFER_BINDING) || null;
+                    const last_element_array_buffer = gl && gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING) || null;
+                    // GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+                    const last_viewport = gl && gl.getParameter(gl.VIEWPORT) || null;
+                    const last_scissor_box = gl && gl.getParameter(gl.SCISSOR_BOX) || null;
+                    const last_blend_src_rgb = gl && gl.getParameter(gl.BLEND_SRC_RGB) || null;
+                    const last_blend_dst_rgb = gl && gl.getParameter(gl.BLEND_DST_RGB) || null;
+                    const last_blend_src_alpha = gl && gl.getParameter(gl.BLEND_SRC_ALPHA) || null;
+                    const last_blend_dst_alpha = gl && gl.getParameter(gl.BLEND_DST_ALPHA) || null;
+                    const last_blend_equation_rgb = gl && gl.getParameter(gl.BLEND_EQUATION_RGB) || null;
+                    const last_blend_equation_alpha = gl && gl.getParameter(gl.BLEND_EQUATION_ALPHA) || null;
+                    const last_enable_blend = gl && gl.getParameter(gl.BLEND) || null;
+                    const last_enable_cull_face = gl && gl.getParameter(gl.CULL_FACE) || null;
+                    const last_enable_depth_test = gl && gl.getParameter(gl.DEPTH_TEST) || null;
+                    const last_enable_scissor_test = gl && gl.getParameter(gl.SCISSOR_TEST) || null;
+                    gl.clearColor(0, 0, 0, 0);
+                    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+                    gl && gl.bindVertexArray(g_VaoHandle);
+                    // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
+                    gl && gl.enable(gl.BLEND);
+                    gl && gl.blendEquation(gl.FUNC_ADD);
+                    gl && gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE);
+                    gl && gl.disable(gl.CULL_FACE);
+                    gl && gl.disable(gl.DEPTH_TEST);
+                    gl && gl.enable(gl.SCISSOR_TEST);
+                    // glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+                    // Setup viewport, orthographic projection matrix
+                    // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+                    gl && gl.viewport(0, 0, fb_width, fb_height);
+                    const L = draw_data.DisplayPos.x;
+                    const R = draw_data.DisplayPos.x + draw_data.DisplaySize.x;
+                    const T = draw_data.DisplayPos.y;
+                    const B = draw_data.DisplayPos.y + draw_data.DisplaySize.y;
+                    // we actually flip the bottom and top here to match with PIXI's texture usage
+                    const ortho_projection = new Float32Array([
+                        2.0 / (R - L), 0.0, 0.0, 0.0,
+                        0.0, 2.0 / (B - T), 0.0, 0.0,
+                        0.0, 0.0, -1.0, 0.0,
+                        (R + L) / (L - R), (B + T) / (T - B), 0.0, 1.0,
+                    ]);
+                    gl && gl.useProgram(g_ShaderHandle);
+                    gl && gl.uniform1i(g_AttribLocationTex, 0);
+                    gl && g_AttribLocationProjMtx && gl.uniformMatrix4fv(g_AttribLocationProjMtx, false, ortho_projection);
+                    // Render command lists
+                    gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationPosition);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationUV);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationColor);
+                    gl && gl.vertexAttribPointer(g_AttribLocationPosition, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertPosOffset);
+                    gl && gl.vertexAttribPointer(g_AttribLocationUV, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertUVOffset);
+                    gl && gl.vertexAttribPointer(g_AttribLocationColor, 4, gl.UNSIGNED_BYTE, true, ImGui.ImDrawVertSize, ImGui.ImDrawVertColOffset);
+                    // Draw
+                    const pos = draw_data.DisplayPos;
+                    const idx_buffer_type = gl && ((ImGui.ImDrawIdxSize === 4) ? gl.UNSIGNED_INT : gl.UNSIGNED_SHORT) || 0;
+                    draw_data.IterateDrawLists((draw_list) => {
+                        gl || console.log(draw_list);
+                        gl || console.log("VtxBuffer.length", draw_list.VtxBuffer.length);
+                        gl || console.log("IdxBuffer.length", draw_list.IdxBuffer.length);
+                        let idx_buffer_offset = 0;
+                        gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+                        gl && gl.bufferData(gl.ARRAY_BUFFER, draw_list.VtxBuffer, gl.STREAM_DRAW);
+                        gl && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+                        gl && gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, draw_list.IdxBuffer, gl.STREAM_DRAW);
+                        draw_list.IterateDrawCmds((draw_cmd) => {
+                            gl || console.log(draw_cmd);
+                            gl || console.log("ElemCount", draw_cmd.ElemCount);
+                            gl || console.log("ClipRect", draw_cmd.ClipRect.x, draw_cmd.ClipRect.y, draw_cmd.ClipRect.z - draw_cmd.ClipRect.x, draw_cmd.ClipRect.w - draw_cmd.ClipRect.y);
+                            gl || console.log("TextureId", draw_cmd.TextureId);
+                            if (!gl) {
+                                console.log("i: pos.x pos.y uv.x uv.y col");
+                                for (let i = 0; i < Math.min(3, draw_cmd.ElemCount); ++i) {
+                                    const view = new ImGui.ImDrawVert(draw_list.VtxBuffer.buffer, draw_list.VtxBuffer.byteOffset + i * ImGui.ImDrawVertSize);
+                                    console.log(`${i}: ${view.pos[0].toFixed(2)} ${view.pos[1].toFixed(2)} ${view.uv[0].toFixed(5)} ${view.uv[1].toFixed(5)} ${("00000000" + view.col[0].toString(16)).substr(-8)}`);
+                                }
+                            }
+                            if (draw_cmd.UserCallback !== null) {
+                                // User callback (registered via ImDrawList::AddCallback)
+                                draw_cmd.UserCallback(draw_list, draw_cmd);
+                            }
+                            else {
+                                const clip_rect = new ImGui.ImVec4(draw_cmd.ClipRect.x - pos.x, draw_cmd.ClipRect.y - pos.y, draw_cmd.ClipRect.z - pos.x, draw_cmd.ClipRect.w - pos.y);
+                                if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0 && clip_rect.w >= 0.0) {
+                                    // Apply scissor/clipping rectangle
+                                    gl && gl.scissor(clip_rect.x, clip_rect.y, clip_rect.z - clip_rect.x, clip_rect.w - clip_rect.y);
+                                    // Bind texture, Draw
+                                    gl && gl.bindTexture(gl.TEXTURE_2D, draw_cmd.TextureId);
+                                    gl && gl.drawElements(gl.TRIANGLES, draw_cmd.ElemCount, idx_buffer_type, idx_buffer_offset);
+                                }
+                            }
+                            idx_buffer_offset += draw_cmd.ElemCount * ImGui.ImDrawIdxSize;
+                        });
+                    });
+                    // Restore modified GL state
+                    gl && (last_program !== null) && gl.useProgram(last_program);
+                    gl && (last_texture0 !== null) && gl.bindTexture(gl.TEXTURE_2D, last_texture0);
+                    gl && (last_active_texture !== null) && gl.activeTexture(last_active_texture);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationPosition);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationUV);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationColor);
+                    gl && (last_vertex_array !== null) && gl.bindVertexArray(last_vertex_array);
+                    gl && (last_array_buffer !== null) && gl.bindBuffer(gl.ARRAY_BUFFER, last_array_buffer);
+                    gl && (last_element_array_buffer !== null) && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+                    gl && (last_viewport !== null) && gl.viewport(last_viewport[0], last_viewport[1], last_viewport[2], last_viewport[3]);
+                    gl && (last_scissor_box !== null) && gl.scissor(last_scissor_box[0], last_scissor_box[1], last_scissor_box[2], last_scissor_box[3]);
+                    gl && (last_blend_equation_rgb !== null && last_blend_equation_alpha !== null) && gl.blendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+                    gl && (last_blend_src_rgb !== null && last_blend_src_alpha !== null && last_blend_dst_rgb !== null && last_blend_dst_alpha !== null) && gl.blendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
+                    gl && (last_enable_blend ? gl.enable(gl.BLEND) : gl.disable(gl.BLEND));
+                    gl && (last_enable_cull_face ? gl.enable(gl.CULL_FACE) : gl.disable(gl.CULL_FACE));
+                    gl && (last_enable_depth_test ? gl.enable(gl.DEPTH_TEST) : gl.disable(gl.DEPTH_TEST));
+                    gl && (last_enable_scissor_test ? gl.enable(gl.SCISSOR_TEST) : gl.disable(gl.SCISSOR_TEST));
+                    // glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
+                }
+            };
+            gl = null;
+            app = null;
+            ImGuiWindowLayer = class ImGuiWindowLayer extends PIXI.Sprite {
+                constructor(window, tex) {
+                    super();
+                    this.pluginName = "imgui_renderer";
+                    this.window = window;
+                }
+            };
+            ImGuiWindow = class ImGuiWindow extends PIXI.Container {
+                constructor(sizeX, sizeY, update) {
+                    super();
+                    this.baseTex = new PIXI.BaseRenderTexture({ scaleMode: PIXI.SCALE_MODES.LINEAR, resolution: 1, type: PIXI.TYPES.FLOAT, format: PIXI.FORMATS.RGBA });
+                    this.tex = new PIXI.RenderTexture(this.baseTex);
+                    this.surface = new PIXI.Sprite(this.tex);
+                    this.imgui = new ImGuiWindowLayer(this, this.tex);
+                    this.ctx = ImGui.CreateContext(contextIOs.length == 0 ? null : contextIOs[0].Fonts);
+                    ImGui.SetCurrentContext(this.ctx);
+                    this.io = ImGui.GetIO();
+                    contexts.push(this.ctx);
+                    contextIOs.push(this.io);
+                    if (contexts.length == 1) {
+                        CreateFontsTexture();
+                    }
+                    if (typeof (window) !== "undefined") {
+                        ImGui.LoadIniSettingsFromMemory(window.localStorage.getItem("imgui.ini") || "");
+                    }
+                    if (typeof (navigator) !== "undefined") {
+                        this.io.ConfigMacOSXBehaviors = navigator.platform.match(/Mac/) !== null;
+                    }
+                    this.io.SetClipboardTextFn = (user_data, text) => {
+                        clipboard_text = text;
+                        // console.log(`set clipboard_text: "${clipboard_text}"`);
+                        if (typeof navigator !== "undefined" && typeof navigator.clipboard !== "undefined") {
+                            // console.log(`clipboard.writeText: "${clipboard_text}"`);
+                            navigator.clipboard.writeText(clipboard_text).then(() => {
+                                // console.log(`clipboard.writeText: "${clipboard_text}" done.`);
+                            });
+                        }
+                    };
+                    this.io.GetClipboardTextFn = (user_data) => {
+                        // if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+                        //     console.log(`clipboard.readText: "${clipboard_text}"`);
+                        //     (navigator as any).clipboard.readText().then((text: string): void => {
+                        //         clipboard_text = text;
+                        //         console.log(`clipboard.readText: "${clipboard_text}" done.`);
+                        //     });
+                        // }
+                        // console.log(`get clipboard_text: "${clipboard_text}"`);
+                        return clipboard_text;
+                    };
+                    this.io.ClipboardUserData = null;
+                    // Setup back-end capabilities flags
+                    this.io.BackendFlags |= ImGui.BackendFlags.HasMouseCursors; // We can honor GetMouseCursor() values (optional)
+                    // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+                    this.io.KeyMap[ImGui.Key.Tab] = 9;
+                    this.io.KeyMap[ImGui.Key.LeftArrow] = 37;
+                    this.io.KeyMap[ImGui.Key.RightArrow] = 39;
+                    this.io.KeyMap[ImGui.Key.UpArrow] = 38;
+                    this.io.KeyMap[ImGui.Key.DownArrow] = 40;
+                    this.io.KeyMap[ImGui.Key.PageUp] = 33;
+                    this.io.KeyMap[ImGui.Key.PageDown] = 34;
+                    this.io.KeyMap[ImGui.Key.Home] = 36;
+                    this.io.KeyMap[ImGui.Key.End] = 35;
+                    this.io.KeyMap[ImGui.Key.Insert] = 45;
+                    this.io.KeyMap[ImGui.Key.Delete] = 46;
+                    this.io.KeyMap[ImGui.Key.Backspace] = 8;
+                    this.io.KeyMap[ImGui.Key.Space] = 32;
+                    this.io.KeyMap[ImGui.Key.Enter] = 13;
+                    this.io.KeyMap[ImGui.Key.Escape] = 27;
+                    this.io.KeyMap[ImGui.Key.A] = 65;
+                    this.io.KeyMap[ImGui.Key.C] = 67;
+                    this.io.KeyMap[ImGui.Key.V] = 86;
+                    this.io.KeyMap[ImGui.Key.X] = 88;
+                    this.io.KeyMap[ImGui.Key.Y] = 89;
+                    this.io.KeyMap[ImGui.Key.Z] = 90;
+                    this.update = update;
+                    this.resize(sizeX, sizeY);
+                    this.imgui.pluginName = 'imgui_renderer';
+                    this.addChild(this.surface);
+                    app.renderer.plugins.interaction.addListener("mousedown", this.mouseDown.bind(this));
+                    app.renderer.plugins.interaction.addListener("mouseup", this.mouseUp.bind(this));
+                    app.ticker.add(this.updateInternal.bind(this));
+                    this.interactive = false;
+                    this.interactiveChildren = true;
+                    this.surface.interactive = false;
+                }
+                getSizeX() { return this.sizeX; }
+                getSizeY() { return this.sizeY; }
+                withContext(cb) {
+                    ImGui.SetCurrentContext(this.ctx);
+                    cb();
+                }
+                mouseDown(e) {
+                    if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface) {
+                        this.io.MouseDown[mouse_button_map[0]] = true;
+                    }
+                }
+                mouseUp(e) {
+                    if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface) {
+                        this.io.MouseDown[mouse_button_map[0]] = false;
+                    }
+                }
+                resize(sizeX, sizeY) {
+                    this.sizeX = sizeX;
+                    this.sizeY = sizeY;
+                    this.baseTex.resize(sizeX, sizeY);
+                    this.tex.frame = new PIXI.Rectangle(0, 0, this.baseTex.width, this.baseTex.height);
+                }
+                updateInternal(deltaTime) {
+                    const dt = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+                    ImGui.SetCurrentContext(this.ctx);
+                    if (this.io.WantSaveIniSettings) {
+                        this.io.WantSaveIniSettings = false;
+                        if (typeof (window) !== "undefined") {
+                            window.localStorage.setItem("imgui.ini", ImGui.SaveIniSettingsToMemory());
+                        }
+                    }
+                    this.io.DisplaySize.x = this.sizeX;
+                    this.io.DisplaySize.y = this.sizeY;
+                    this.io.DisplayFramebufferScale.x = 1;
+                    this.io.DisplayFramebufferScale.y = 1;
+                    this.io.DeltaTime = dt;
+                    let localPos = this.toLocal(app.renderer.plugins.interaction.mouse.global);
+                    if (localPos.x < 0 || localPos.y < 0 || localPos.x >= this.sizeX || localPos.y >= this.sizeY) {
+                        localPos = new PIXI.Point(-Number.MAX_VALUE, -Number.MAX_VALUE);
+                    }
+                    this.io.MousePos.x = localPos.x;
+                    this.io.MousePos.y = localPos.y;
+                    if (this.io.WantSetMousePos) {
+                        console.log("TODO: MousePos", this.io.MousePos.x, this.io.MousePos.y);
+                    }
+                    if (typeof (document) !== "undefined") {
+                        if (this.io.MouseDrawCursor) {
+                            document.body.style.cursor = "none";
+                        }
+                        else {
+                            switch (ImGui.GetMouseCursor()) {
+                                case ImGui.MouseCursor.None:
+                                    document.body.style.cursor = "none";
+                                    break;
+                                default:
+                                case ImGui.MouseCursor.Arrow:
+                                    document.body.style.cursor = "default";
+                                    break;
+                                case ImGui.MouseCursor.TextInput:
+                                    document.body.style.cursor = "text";
+                                    break; // When hovering over InputText, etc.
+                                case ImGui.MouseCursor.ResizeAll:
+                                    document.body.style.cursor = "move";
+                                    break; // Unused
+                                case ImGui.MouseCursor.ResizeNS:
+                                    document.body.style.cursor = "ns-resize";
+                                    break; // When hovering over an horizontal border
+                                case ImGui.MouseCursor.ResizeEW:
+                                    document.body.style.cursor = "ew-resize";
+                                    break; // When hovering over a vertical border or a column
+                                case ImGui.MouseCursor.ResizeNESW:
+                                    document.body.style.cursor = "nesw-resize";
+                                    break; // When hovering over the bottom-left corner of a window
+                                case ImGui.MouseCursor.ResizeNWSE:
+                                    document.body.style.cursor = "nwse-resize";
+                                    break; // When hovering over the bottom-right corner of a window
+                                case ImGui.MouseCursor.Hand:
+                                    document.body.style.cursor = "move";
+                                    break;
+                            }
+                        }
+                    }
+                    // Gamepad navigation mapping [BETA]
+                    for (let i = 0; i < this.io.NavInputs.length; ++i) {
+                        this.io.NavInputs[i] = 0.0;
+                    }
+                    if (this.io.ConfigFlags & ImGui.ConfigFlags.NavEnableGamepad) {
+                        // Update gamepad inputs
+                        const gamepads = (typeof (navigator) !== "undefined" && typeof (navigator.getGamepads) === "function") ? navigator.getGamepads() : [];
+                        for (let i = 0; i < gamepads.length; ++i) {
+                            const gamepad = gamepads[i];
+                            if (!gamepad) {
+                                continue;
+                            }
+                            const buttons_count = gamepad.buttons.length;
+                            const axes_count = gamepad.axes.length;
+                            const MAP_BUTTON = function (NAV_NO, BUTTON_NO) {
+                                if (!gamepad) {
+                                    return;
+                                }
+                                if (buttons_count > BUTTON_NO && gamepad.buttons[BUTTON_NO].pressed)
+                                    this.io.NavInputs[NAV_NO] = 1.0;
+                            };
+                            const MAP_ANALOG = function (NAV_NO, AXIS_NO, V0, V1) {
+                                if (!gamepad) {
+                                    return;
+                                }
+                                let v = (axes_count > AXIS_NO) ? gamepad.axes[AXIS_NO] : V0;
+                                v = (v - V0) / (V1 - V0);
+                                if (v > 1.0)
+                                    v = 1.0;
+                                if (this.io.NavInputs[NAV_NO] < v)
+                                    this.io.NavInputs[NAV_NO] = v;
+                            };
+                            // TODO: map input based on vendor and product id
+                            // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/id
+                            const match = gamepad.id.match(/^([0-9a-f]{4})-([0-9a-f]{4})-.*$/);
+                            const match_chrome = gamepad.id.match(/^.*\(.*Vendor: ([0-9a-f]{4}) Product: ([0-9a-f]{4})\).*$/);
+                            const vendor = (match && match[1]) || (match_chrome && match_chrome[1]) || "0000";
+                            const product = (match && match[2]) || (match_chrome && match_chrome[2]) || "0000";
+                            switch (vendor + product) {
+                                case "046dc216": // Logitech Logitech Dual Action (Vendor: 046d Product: c216)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 1); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 2); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 0); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_ANALOG(ImGui.NavInput.DpadLeft, 4, -0.3, -0.9); // D-Pad Left
+                                    MAP_ANALOG(ImGui.NavInput.DpadRight, 4, +0.3, +0.9); // D-Pad Right
+                                    MAP_ANALOG(ImGui.NavInput.DpadUp, 5, -0.3, -0.9); // D-Pad Up
+                                    MAP_ANALOG(ImGui.NavInput.DpadDown, 5, +0.3, +0.9); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 6); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 7); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                case "046dc21d": // Logitech Gamepad F310 (STANDARD GAMEPAD Vendor: 046d Product: c21d)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 0); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 1); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 2); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_BUTTON(ImGui.NavInput.DpadLeft, 14); // D-Pad Left
+                                    MAP_BUTTON(ImGui.NavInput.DpadRight, 15); // D-Pad Right
+                                    MAP_BUTTON(ImGui.NavInput.DpadUp, 12); // D-Pad Up
+                                    MAP_BUTTON(ImGui.NavInput.DpadDown, 13); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_ANALOG(ImGui.NavInput.TweakSlow, 6, +0.3, +0.9); // L2 / LT
+                                    MAP_ANALOG(ImGui.NavInput.TweakFast, 7, +0.3, +0.9); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                case "2dc86001": // 8Bitdo SN30 Pro  8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6001)
+                                case "2dc86101": // 8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6101)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 1); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 0); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 4); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_ANALOG(ImGui.NavInput.DpadLeft, 6, -0.3, -0.9); // D-Pad Left
+                                    MAP_ANALOG(ImGui.NavInput.DpadRight, 6, +0.3, +0.9); // D-Pad Right
+                                    MAP_ANALOG(ImGui.NavInput.DpadUp, 7, -0.3, -0.9); // D-Pad Up
+                                    MAP_ANALOG(ImGui.NavInput.DpadDown, 7, +0.3, +0.9); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 6); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 7); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 8); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 9); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                default: // standard gamepad: https://w3c.github.io/gamepad/#remapping
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 0); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 1); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 2); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_BUTTON(ImGui.NavInput.DpadLeft, 14); // D-Pad Left
+                                    MAP_BUTTON(ImGui.NavInput.DpadRight, 15); // D-Pad Right
+                                    MAP_BUTTON(ImGui.NavInput.DpadUp, 12); // D-Pad Up
+                                    MAP_BUTTON(ImGui.NavInput.DpadDown, 13); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 6); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 7); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                            }
+                        }
+                    }
+                    ImGui.NewFrame();
+                    this.update(dt);
+                    ImGui.EndFrame();
+                    ImGui.Render();
+                    app.renderer.render(this.imgui, this.tex);
+                    this.surface.interactive = this.io.WantCaptureMouse;
+                }
+            };
+            exports_1("ImGuiWindow", ImGuiWindow);
+            canvas = null;
+            //export let gl: WebGL2RenderingContext | null = null;
+            g_ShaderHandle = null;
+            g_VertHandle = null;
+            g_FragHandle = null;
+            g_AttribLocationTex = null;
+            g_AttribLocationProjMtx = null;
+            g_AttribLocationPosition = -1;
+            g_AttribLocationUV = -1;
+            g_AttribLocationColor = -1;
+            g_VaoHandle = null;
+            g_VboHandle = null;
+            g_ElementsHandle = null;
+            g_FontTexture = null;
+            // MouseEvent.button
+            // A number representing a given button:
+            // 0: Main button pressed, usually the left button or the un-initialized state
+            // 1: Auxiliary button pressed, usually the wheel button or the middle button (if present)
+            // 2: Secondary button pressed, usually the right button
+            // 3: Fourth button, typically the Browser Back button
+            // 4: Fifth button, typically the Browser Forward button
+            mouse_button_map = [0, 2, 1, 3, 4];
+        }
+    };
+});
+//# sourceMappingURL=imgui_impl.js.map
\ No newline at end of file

diff --git a/.gitmodules b/.gitmodules
index d6b45d7..fc2be7a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,7 @@
 [submodule "emsdk"]
 	path = emsdk
 	url = https://github.com/emscripten-core/emsdk.git
+	ignore = untracked
+[submodule "pixi.js"]
+	path = pixi.js
+	url = https://git.mhack.io/git/mark/pixi.js.git
diff --git a/imgui-js b/imgui-js
index 9f694ef..9536eca 160000
--- a/imgui-js
+++ b/imgui-js
@@ -1 +1 @@
-Subproject commit 9f694ef7e8e7251c32f7811ba39938951a12097a
+Subproject commit 9536ecad287eb76812087cd3fee1aaacb448c027
diff --git a/indexdev.html b/indexdev.html
index 2f6c3b3..3d27479 100644
--- a/indexdev.html
+++ b/indexdev.html
@@ -2,22 +2,16 @@
     <head>
         <title>7GUI</title>
         <script src="node_modules/systemjs/dist/system.js"></script>
-        <!--
-        <script type="systemjs-importmap">
-            {
-                "imports": {
-                    "imgui-js/example/imgui_impl": "imgui-js/dist/imgui_impl.umd.js"
-                }
-            }
-        </script>
-        -->
         <script>
             System.config({
                 map: {
-                    "imgui-js": "./imgui-js"
+                    "imgui-js": "./imgui-js",
+                    "pixi.js": "./node_modules/pixi.js"
                 },
                 packages: {
-                    "imgui-js": { main: "imgui.js", }
+                    "imgui-js": { main: "imgui.js" },
+                    "pixi.js": { main: "dist/pixi.js" },
+                    "./": { map: { "src/utils": "./src/utils.js", "src/imgui_impl": "./src/imgui_impl.js" } }
                 }
             });
             System.import("./src/main.js");
diff --git a/package-lock.json b/package-lock.json
index ed52494..8bda7e5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,16 +4,34 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@pixi/constants": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/constants/-/constants-5.1.0.tgz",
+      "integrity": "sha512-86cogDvjF9yNvmxeizwkIhA0Kl2z3gUSWMf2daYx903dzyje7fwkzRrKLnqDUn6vSAxRXiska0DMJhwYsIC29w=="
+    },
+    "@pixi/math": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/math/-/math-5.1.0.tgz",
+      "integrity": "sha512-Vf9W4SgYRRQMdSq8tFViKKKGCU3iklf0RDzd+wzp4gezOxe3m0PLB7XKwvVrP1hRjUh49zIAL9JBpYREPS1EMw=="
+    },
+    "@pixi/polyfill": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/polyfill/-/polyfill-5.1.0.tgz",
+      "integrity": "sha512-8M3nYCO0a599fsdLW7wv9SBYriMqS1QckKAkRuN2JualRuK/GjxZjm5Vcbcwc1gGONRUKZroH12CuPyTcU2HnQ==",
+      "requires": {
+        "es6-promise-polyfill": "^1.2.0",
+        "object-assign": "^4.1.1"
+      }
+    },
     "@types/estree": {
       "version": "0.0.39",
       "resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.39.tgz",
       "integrity": "sha512-EYNwp3bU+98cpU4lAWYYL7Zz+2gryWH1qbdDTidVd6hkiR6weksdbMadyXKXNPEkQFhXM+hVO9ZygomHXp+AIw=="
     },
     "@types/node": {
-      "version": "12.0.7",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.0.7.tgz",
-      "integrity": "sha512-1YKeT4JitGgE4SOzyB9eMwO0nGVNkNEsm9qlIt1Lqm/tG2QEiSMTD4kS3aO6L+w5SClLVxALmIBESK6Mk5wX0A==",
-      "dev": true
+      "version": "12.6.8",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.6.8.tgz",
+      "integrity": "sha512-aX+gFgA5GHcDi89KG5keey2zf0WfZk/HAQotEamsK2kbey+8yGKcson0hbK8E+v0NArlCJQCqMP161YhV6ZXLg=="
     },
     "@types/resolve": {
       "version": "0.0.8",
@@ -27,7 +45,13 @@
     "@types/systemjs": {
       "version": "0.20.6",
       "resolved": "https://registry.npmjs.org/@types/systemjs/-/systemjs-0.20.6.tgz",
-      "integrity": "sha512-p3yv9sBBJXi3noUG216BpUI7VtVBUAvBIfZNTiDROUY31YBfsFHM4DreS7XMekN8IjtX0ysvCnm6r3WnirnNeA=="
+      "integrity": "sha512-p3yv9sBBJXi3noUG216BpUI7VtVBUAvBIfZNTiDROUY31YBfsFHM4DreS7XMekN8IjtX0ysvCnm6r3WnirnNeA==",
+      "dev": true
+    },
+    "@types/webgl2": {
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/@types/webgl2/-/webgl2-0.0.5.tgz",
+      "integrity": "sha512-oGaKsBbxQOY5+aJFV3KECDhGaXt+yZJt2y/OZsnQGLRkH6Fvr7rv4pCt3SRH1somIHfej/c4u7NSpCyd9x+1Ow=="
     },
     "abstract-leveldown": {
       "version": "0.12.4",
@@ -57,9 +81,9 @@
       }
     },
     "acorn": {
-      "version": "6.1.1",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.1.1.tgz",
-      "integrity": "sha512-jPTiwtOxaHNaAPg/dmrJ/beuzLRnXtB0kQPQ8JpotKJgTB6rX6c8mlf315941pyjBSaPg8NHXS9fhP4u17DpGA=="
+      "version": "6.2.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.2.0.tgz",
+      "integrity": "sha512-8oe72N3WPMjA+2zVG71Ia0nXZ8DpQH+QyyHO+p06jT8eg8FGG3FbcUIi8KziHlAfheJQZeoqbvq1mQSQHXKYLw=="
     },
     "anymatch": {
       "version": "2.0.0",
@@ -258,6 +282,12 @@
             "isarray": "0.0.1",
             "string_decoder": "~0.10.x"
           }
+        },
+        "string_decoder": {
+          "version": "0.10.31",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
+          "dev": true
         }
       }
     },
@@ -485,12 +515,6 @@
         "object-visit": "^1.0.0"
       }
     },
-    "colors": {
-      "version": "1.3.3",
-      "resolved": "https://registry.npmjs.org/colors/-/colors-1.3.3.tgz",
-      "integrity": "sha512-mmGt/1pZqYRjMxB1axhTo16/snVZ5krrKkcmMeVKxzECMMXoCgnvTPp10QgHfcbQZw8Dq2jMNG6je4JlWU0gWg==",
-      "dev": true
-    },
     "component-emitter": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.3.0.tgz",
@@ -533,16 +557,6 @@
       "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
       "dev": true
     },
-    "cors": {
-      "version": "2.8.5",
-      "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
-      "integrity": "sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==",
-      "dev": true,
-      "requires": {
-        "object-assign": "^4",
-        "vary": "^1"
-      }
-    },
     "create-ecdh": {
       "version": "4.0.3",
       "resolved": "https://registry.npmjs.org/create-ecdh/-/create-ecdh-4.0.3.tgz",
@@ -703,6 +717,11 @@
       "integrity": "sha1-rOb/gIwc5mtX0ev5eXessCM0z8E=",
       "dev": true
     },
+    "earcut": {
+      "version": "2.1.5",
+      "resolved": "https://registry.npmjs.org/earcut/-/earcut-2.1.5.tgz",
+      "integrity": "sha512-QFWC7ywTVLtvRAJTVp8ugsuuGQ5mVqNmJ1cRYeLrSHgP3nycr2RHTJob9OtM0v8ujuoKN0NY1a93J/omeTL1PA=="
+    },
     "ee-first": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
@@ -739,6 +758,11 @@
         "prr": "~1.0.1"
       }
     },
+    "es6-promise-polyfill": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/es6-promise-polyfill/-/es6-promise-polyfill-1.2.0.tgz",
+      "integrity": "sha1-84kl8jyz4+jObNqP93T867sJDN4="
+    },
     "escape-html": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
@@ -772,6 +796,11 @@
         "through": "~2.3.1"
       }
     },
+    "eventemitter3": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-3.1.2.tgz",
+      "integrity": "sha512-tvtQIeLVHjDkJYnzf2dgVMxfuSGJeM/7UCG17TT4EumTfNtF+0nebF/4zWOIkCreAbtNqhGEboB6BWrwqNaw4Q=="
+    },
     "evp_bytestokey": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/evp_bytestokey/-/evp_bytestokey-1.0.3.tgz",
@@ -904,9 +933,9 @@
       }
     },
     "faye-websocket": {
-      "version": "0.11.1",
-      "resolved": "https://registry.npmjs.org/faye-websocket/-/faye-websocket-0.11.1.tgz",
-      "integrity": "sha1-8O/hjE9W5PQK/H4Gxxn9XuYYjzg=",
+      "version": "0.11.3",
+      "resolved": "https://registry.npmjs.org/faye-websocket/-/faye-websocket-0.11.3.tgz",
+      "integrity": "sha512-D2y4bovYpzziGgbHYtGCMjlJM36vAl/y+xUyn1C+FVx8szd1E+86KwVw6XvYSzOP8iMpm1X0I4xJD+QtUb36OA==",
       "dev": true,
       "requires": {
         "websocket-driver": ">=0.5.1"
@@ -1568,6 +1597,12 @@
             "isarray": "0.0.1",
             "string_decoder": "~0.10.x"
           }
+        },
+        "string_decoder": {
+          "version": "0.10.31",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
+          "dev": true
         }
       }
     },
@@ -1599,9 +1634,9 @@
       }
     },
     "graceful-fs": {
-      "version": "4.1.15",
-      "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.1.15.tgz",
-      "integrity": "sha512-6uHUhOPEBgQ24HM+r6b/QwWfZq+yiFcipKFrOFiBEnWdy5sdzYoi+pJeQaPI5qOLRFqWmAXUPQNsielzdLoecA==",
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.0.tgz",
+      "integrity": "sha512-jpSvDPV4Cq/bgtpndIWbI5hmYxhQGHPC4d4cqBPb4DLniCfhJokdXhwhaDuLBGLQdvvRum/UiX6ECVIPvDXqdg==",
       "dev": true
     },
     "has-value": {
@@ -1680,22 +1715,22 @@
       }
     },
     "http-errors": {
-      "version": "1.7.2",
-      "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.7.2.tgz",
-      "integrity": "sha512-uUQBt3H/cSIVfch6i1EuPNy/YsRSOUBXTVfZ+yR7Zjez3qjBz6i9+i4zjNaoqcoFVI4lQJ5plg63TvGfRSDCRg==",
+      "version": "1.7.3",
+      "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.7.3.tgz",
+      "integrity": "sha512-ZTTX0MWrsQ2ZAhA1cejAwDLycFsd7I7nVtnkT3Ol0aqodaKW+0CTZDQ1uBv5whptCnc8e8HeRRJxRs0kmm/Qfw==",
       "dev": true,
       "requires": {
         "depd": "~1.1.2",
-        "inherits": "2.0.3",
+        "inherits": "2.0.4",
         "setprototypeof": "1.1.1",
         "statuses": ">= 1.5.0 < 2",
         "toidentifier": "1.0.0"
       }
     },
     "http-parser-js": {
-      "version": "0.5.0",
-      "resolved": "https://registry.npmjs.org/http-parser-js/-/http-parser-js-0.5.0.tgz",
-      "integrity": "sha512-cZdEF7r4gfRIq7ezX9J0T+kQmJNOub71dWbgAXVHDct80TKP4MCETtZQ31xyv38UwgzkWPYF/Xc0ge55dW9Z9w==",
+      "version": "0.4.10",
+      "resolved": "https://registry.npmjs.org/http-parser-js/-/http-parser-js-0.4.10.tgz",
+      "integrity": "sha1-ksnBN0w1CF912zWexWzCV8u5P6Q=",
       "dev": true
     },
     "idb-wrapper": {
@@ -3790,9 +3825,9 @@
       "dev": true
     },
     "inherits": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
-      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
       "dev": true
     },
     "is": {
@@ -3938,9 +3973,9 @@
       }
     },
     "is-reference": {
-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/is-reference/-/is-reference-1.1.2.tgz",
-      "integrity": "sha512-Kn5g8c7XHKejFOpTf2QN9YjiHHKl5xRj+2uAZf9iM2//nkBNi/NNeB5JMoun28nEaUVHyPUzqzhfRlfAirEjXg==",
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/is-reference/-/is-reference-1.1.3.tgz",
+      "integrity": "sha512-W1iHHv/oyBb2pPxkBxtaewxa1BC58Pn5J0hogyCdefwUIvb6R+TGbAcIa4qPNYLqLhb3EnOgUf2MQkkF76BcKw==",
       "dev": true,
       "requires": {
         "@types/estree": "0.0.39"
@@ -3970,6 +4005,11 @@
       "integrity": "sha1-OMFG2d9Si4v5sHAcPUPPEt8/w5s=",
       "dev": true
     },
+    "ismobilejs": {
+      "version": "0.5.2",
+      "resolved": "https://registry.npmjs.org/ismobilejs/-/ismobilejs-0.5.2.tgz",
+      "integrity": "sha512-ta9UdV60xVZk/ZafFtSFslQaE76SvNkcs1r73d2PVR21zVzx9xuYv9tNe4MxA1NN7WoeCc2RjGot3Bz1eHDx3Q=="
+    },
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-          "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
-          "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
-          "dev": true,
-          "requires": {
-            "is-extendable": "^0.1.0"
-          }
-        },
-        "set-value": {
-          "version": "0.4.3",
-          "resolved": "https://registry.npmjs.org/set-value/-/set-value-0.4.3.tgz",
-          "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=",
-          "dev": true,
-          "requires": {
-            "extend-shallow": "^2.0.1",
-            "is-extendable": "^0.1.1",
-            "is-plain-object": "^2.0.1",
-            "to-object-path": "^0.3.0"
-          }
-        }
+        "set-value": "^2.0.1"
       }
     },
     "universalify": {
@@ -5341,6 +5769,15 @@
       "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
       "dev": true
     },
+    "url": {
+      "version": "0.11.0",
+      "resolved": "https://registry.npmjs.org/url/-/url-0.11.0.tgz",
+      "integrity": "sha1-ODjpfPxgUh63PFJajlW/3Z4uKPE=",
+      "requires": {
+        "punycode": "1.3.2",
+        "querystring": "0.2.0"
+      }
+    },
     "use": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
@@ -5372,12 +5809,13 @@
       "dev": true
     },
     "websocket-driver": {
-      "version": "0.7.0",
-      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.0.tgz",
-      "integrity": "sha1-DK+dLXVdk67gSdS90NP+LMoqJOs=",
+      "version": "0.7.3",
+      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.3.tgz",
+      "integrity": "sha512-bpxWlvbbB459Mlipc5GBzzZwhoZgGEZLuqPaR0INBGnPAY1vdBX6hPnoFXiw+3yWxDuHyQjO2oXTMyS8A5haFg==",
       "dev": true,
       "requires": {
-        "http-parser-js": ">=0.4.0",
+        "http-parser-js": ">=0.4.0 <0.4.11",
+        "safe-buffer": ">=5.1.0",
         "websocket-extensions": ">=0.1.1"
       }
     },
diff --git a/package.json b/package.json
index 07cf1ea..8aafc46 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,9 @@
     "build": "tsc",
     "rollup": "rollup -c",
     "watch": "npx live-server --open=index.html --watch='./*.html,./*.js'",
-    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./*.js'"
+    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./src/*.js'",
+    "pixi": "cd pixi.js && npm run local && cd .. && npm run pixi:install",
+    "pixi:install": "rm -rf node_modules/pixi.js && rm package-lock.json"
   },
   "repository": {
     "type": "git",
@@ -17,13 +19,15 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@types/systemjs": "^0.20.6",
+    "@types/webgl2": "0.0.5",
     "imgui-js": "file:./imgui-js",
+    "pixi.js": "file:pixi.js/bundles/pixi.js/pixi.js-5.1.4.tgz",
     "rollup": "^1.15.6",
     "systemjs": "^0.21.5"
   },
   "devDependencies": {
     "@types/node": "^12.0.0",
+    "@types/systemjs": "^0.20.6",
     "live-server": "^1.2.1",
     "rollup-plugin-commonjs": "^10.0.0",
     "rollup-plugin-node-builtins": "^2.1.2",
diff --git a/pixi.js b/pixi.js
new file mode 160000
index 0000000..1b78731
--- /dev/null
+++ b/pixi.js
@@ -0,0 +1 @@
+Subproject commit 1b78731948b57c635a2e65444c387eed31ec7428
diff --git a/session b/session
index bbf5582..06b9a8d 100644
--- a/session
+++ b/session
@@ -1,322 +1,62 @@
 let SessionLoad = 1
 if &cp | set nocp | endif
-let s:cpo_save=&cpo
-set cpo&vim
-imap <Nul> <C-Space>
-inoremap <expr> <Up> pumvisible() ? "\" : "\<Up>"
-inoremap <expr> <S-Tab> pumvisible() ? "\" : "\<S-Tab>"
-inoremap <expr> <Down> pumvisible() ? "\" : "\<Down>"
-nnoremap <silent>  :TmuxNavigateLeft
-nnoremap <silent> <NL> :TmuxNavigateDown
-nnoremap <silent>  :TmuxNavigateUp
-nnoremap <silent>  :TmuxNavigateRight
-nnoremap <silent>  :TmuxNavigatePrevious
-nnoremap \d :YcmShowDetailedDiagnostic
-vnoremap <silent> \c :call CopyMarkWithCursor("<", ">")
-nnoremap <silent> \c :set opfunc=OpSysCopyMarkg@
-vmap gx <Plug>NetrwBrowseXVis
-nmap gx <Plug>NetrwBrowseX
-vnoremap <silent> <Plug>NetrwBrowseXVis :call netrw#BrowseXVis()
-nnoremap <silent> <Plug>NetrwBrowseX :call netrw#BrowseX(expand((exists("g:netrw_gx")? g:netrw_gx : '<cfile>')),netrw#CheckIfRemote())
-inoremap <expr> 	 pumvisible() ? "\" : "\	"
-let &cpo=s:cpo_save
-unlet s:cpo_save
-set autoindent
-set backspace=indent,eol,start
-set completefunc=youcompleteme#CompleteFunc
-set completeopt=preview,menuone
-set cpoptions=aAceFsB
-set fileencodings=ucs-bom,utf-8,default,latin1
-set fillchars=vert:|,fold:-,vert:│
-set helplang=en
-set hidden
-set include=import_s.\\zs[^'\"]*\\ze
-set includeexpr=TsIncludeExpr(v:fname)
-set nomodeline
-set path=.,/usr/include,,,./node_modules/**,node_modules/**
-set ruler
-set runtimepath=~/.vim,~/.vim/bundle/JustDo,~/.vim/bundle/YouCompleteMe,~/.vim/bundle/vim-easymotion,~/.vim/bundle/vim-tmux-navigator,~/.vim/bundle/yats.vim,/var/lib/vim/addons,/usr/share/vim/vimfiles,/usr/share/vim/vim74,/usr/share/vim/vimfiles/after,/var/lib/vim/addons/after,~/.vim/after
-set sessionoptions=blank,buffers,folds,help,options,tabpages,winsize,sesdir
-set shortmess=filnxtToOc
-set suffixes=.bak,~,.swp,.o,.info,.aux,.log,.dvi,.bbl,.blg,.brf,.cb,.ind,.idx,.ilg,.inx,.out,.toc
-set suffixesadd=.ts
 let s:so_save = &so | let s:siso_save = &siso | set so=0 siso=0
 let v:this_session=expand("<sfile>:p")
 silent only
+silent tabonly
 exe "cd " . escape(expand("<sfile>:p:h"), ' ')
 if expand('%') == '' && !&modified && line('$') <= 1 && getline(1) == ''
   let s:wipebuf = bufnr('%')
 endif
 set shortmess=aoO
+argglobal
+%argdel
+edit src/imgui_impl.ts
+set splitbelow splitright
+set nosplitbelow
+set nosplitright
+wincmd t
+set winminheight=0
+set winheight=1
+set winminwidth=0
+set winwidth=1
+argglobal
+let s:l = 1 - ((0 * winheight(0) + 21) / 42)
+if s:l < 1 | let s:l = 1 | endif
+exe s:l
+normal! zt
+1
+normal! 0
+tabnext 1
+badd +0 src/imgui_impl.ts
 badd +12 rollup.config.js
 badd +7 imgui-js/rollup.config.js
-badd +7 imgui-js/tsconfig.json
-badd +26 tsconfig.json
+badd +4 imgui-js/tsconfig.json
+badd +12 tsconfig.json
 badd +1 index.js
 badd +3904 imgui-js/imgui.ts
-badd +39 src/main.ts
+badd +80 src/main.ts
 badd +52 imgui-js/example/main.ts
-badd +8 package.json
+badd +34 package.json
 badd +1 imgui-js/dist/imgui.d.ts
 badd +1 imgui-js/bind-imgui.js
 badd +1 imgui-js/example/imgui_impl.js
 badd +2 imgui-js/example/imgui_impl.ts
 badd +295 imgui-js/imgui_demo.ts
 badd +4 index.html
-badd +14 indexdev.html
+badd +4 indexdev.html
 badd +6 imgui-js/example/index.html
-badd +2 imgui-js/example/system.config.js
+badd +6 imgui-js/example/system.config.js
 badd +40 imgui-js/package.json
-badd +201 node_modules/systemjs/dist/system.js
-argglobal
-silent! argdel *
-edit package.json
-set splitbelow splitright
-wincmd _ | wincmd |
-split
-1wincmd k
-wincmd w
-set nosplitbelow
-set nosplitright
-wincmd t
-set winheight=1 winwidth=1
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-argglobal
-enew
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=wipe
-setlocal buflisted
-setlocal buftype=nofile
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=s1:/*,mb:*,ex:*/,://,b:#,:%,:XCOMM,n:>,fb:-
-setlocal commentstring=/*%s*/
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != ''
-setlocal filetype=
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=tcq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=
-setlocal indentkeys=0{,0},:,0#,!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal nomodifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal previewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal noswapfile
-setlocal synmaxcol=3000
-if &syntax != ''
-setlocal syntax=
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal winfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-wincmd w
-argglobal
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=
-setlocal buflisted
-setlocal buftype=
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=
-setlocal commentstring=
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != 'json'
-setlocal filetype=json
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=cq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=GetJSONIndent()
-setlocal indentkeys=0{,0},0),0[,0],!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal modifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal nopreviewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal swapfile
-setlocal synmaxcol=3000
-if &syntax != 'json'
-setlocal syntax=json
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal nowinfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-silent! normal! zE
-let s:l = 23 - ((19 * winheight(0) + 15) / 31)
-if s:l < 1 | let s:l = 1 | endif
-exe s:l
-normal! zt
-23
-normal! 024|
-wincmd w
-2wincmd w
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-tabnext 1
-if exists('s:wipebuf')
+badd +1 node_modules/systemjs/dist/system.js
+badd +1 src/main.js
+badd +1 imgui-js/example/main.js
+if exists('s:wipebuf') && len(win_findbuf(s:wipebuf)) == 0
   silent exe 'bwipe ' . s:wipebuf
 endif
 unlet! s:wipebuf
 set winheight=1 winwidth=20 shortmess=filnxtToOc
+set winminheight=1 winminwidth=1
 let s:sx = expand("<sfile>:p:r")."x.vim"
 if file_readable(s:sx)
   exe "source " . fnameescape(s:sx)
diff --git a/src/imgui_impl.js b/src/imgui_impl.js
new file mode 100644
index 0000000..416e4b2
--- /dev/null
+++ b/src/imgui_impl.js
@@ -0,0 +1,736 @@
+System.register(["imgui-js", "pixi.js", "./utils"], function (exports_1, context_1) {
+    "use strict";
+    var ImGui, PIXI, U, clipboard_text, contexts, contextIOs, isFirstWindow, ImGuiImplInternalRenderer, gl, app, ImGuiWindowLayer, ImGuiWindow, canvas, g_ShaderHandle, g_VertHandle, g_FragHandle, g_AttribLocationTex, g_AttribLocationProjMtx, g_AttribLocationPosition, g_AttribLocationUV, g_AttribLocationColor, g_VaoHandle, g_VboHandle, g_ElementsHandle, g_FontTexture, mouse_button_map;
+    var __moduleName = context_1 && context_1.id;
+    function document_on_copy(event) {
+        if (event.clipboardData) {
+            event.clipboardData.setData("text/plain", clipboard_text);
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function document_on_cut(event) {
+        if (event.clipboardData) {
+            event.clipboardData.setData("text/plain", clipboard_text);
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function document_on_paste(event) {
+        if (event.clipboardData) {
+            clipboard_text = event.clipboardData.getData("text/plain");
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function window_on_gamepadconnected(event /* GamepadEvent */) {
+        console.log("Gamepad connected at index %d: %s. %d buttons, %d axes.", event.gamepad.index, event.gamepad.id, event.gamepad.buttons.length, event.gamepad.axes.length);
+    }
+    function window_on_gamepaddisconnected(event /* GamepadEvent */) {
+        console.log("Gamepad disconnected at index %d: %s.", event.gamepad.index, event.gamepad.id);
+    }
+    function canvas_on_blur(event) {
+        for (var io of contextIOs) {
+            io.KeyCtrl = false;
+            io.KeyShift = false;
+            io.KeyAlt = false;
+            io.KeySuper = false;
+            for (let i = 0; i < io.KeysDown.length; ++i) {
+                io.KeysDown[i] = false;
+            }
+            for (let i = 0; i < io.MouseDown.length; ++i) {
+                io.MouseDown[i] = false;
+            }
+        }
+    }
+    function canvas_on_keydown(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.KeyCtrl = event.ctrlKey;
+            io.KeyShift = event.shiftKey;
+            io.KeyAlt = event.altKey;
+            io.KeySuper = event.metaKey;
+            ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+            io.KeysDown[event.keyCode] = true;
+            // forward to the keypress event
+            if ( /*io.WantCaptureKeyboard ||*/event.key === "Tab") {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_keyup(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.KeyCtrl = event.ctrlKey;
+            io.KeyShift = event.shiftKey;
+            io.KeyAlt = event.altKey;
+            io.KeySuper = event.metaKey;
+            ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+            io.KeysDown[event.keyCode] = false;
+            if (io.WantCaptureKeyboard) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_keypress(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.AddInputCharacter(event.charCode);
+            if (io.WantCaptureKeyboard) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_contextmenu(event) {
+        for (var io of contextIOs) {
+            if (io.WantCaptureMouse) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_wheel(event) {
+        for (var io of contextIOs) {
+            let scale = 1.0;
+            switch (event.deltaMode) {
+                case event.DOM_DELTA_PIXEL:
+                    scale = 0.01;
+                    break;
+                case event.DOM_DELTA_LINE:
+                    scale = 0.2;
+                    break;
+                case event.DOM_DELTA_PAGE:
+                    scale = 1.0;
+                    break;
+            }
+            io.MouseWheelH = event.deltaX * scale;
+            io.MouseWheel = -event.deltaY * scale; // Mouse wheel: 1 unit scrolls about 5 lines text.
+            if (io.WantCaptureMouse) {
+                event.preventDefault();
+            }
+        }
+    }
+    function PrePIXIInit() {
+        PIXI.Renderer.registerPlugin("imgui_renderer", U.fromConstructor(ImGuiImplInternalRenderer));
+    }
+    exports_1("PrePIXIInit", PrePIXIInit);
+    function Init(_app) {
+        // Setup Dear ImGui binding
+        ImGui.IMGUI_CHECKVERSION();
+        if (typeof (document) !== "undefined") {
+            document.body.addEventListener("copy", document_on_copy);
+            document.body.addEventListener("cut", document_on_cut);
+            document.body.addEventListener("paste", document_on_paste);
+        }
+        if (typeof (window) !== "undefined") {
+            window.addEventListener("gamepadconnected", window_on_gamepadconnected);
+            window.addEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+        }
+        app = _app;
+        gl = app.renderer.gl;
+        canvas = app.view;
+        gl.getExtension("EXT_color_buffer_float");
+        if (canvas !== null) {
+            canvas.style.touchAction = "none"; // Disable browser handling of all panning and zooming gestures.
+            canvas.addEventListener("blur", canvas_on_blur);
+            canvas.addEventListener("keydown", canvas_on_keydown);
+            canvas.addEventListener("keyup", canvas_on_keyup);
+            canvas.addEventListener("keypress", canvas_on_keypress);
+            canvas.addEventListener("contextmenu", canvas_on_contextmenu);
+            canvas.addEventListener("wheel", canvas_on_wheel);
+        }
+        CreateDeviceObjects();
+    }
+    exports_1("Init", Init);
+    function Shutdown() {
+        DestroyDeviceObjects();
+        if (canvas !== null) {
+            canvas.removeEventListener("blur", canvas_on_blur);
+            canvas.removeEventListener("keydown", canvas_on_keydown);
+            canvas.removeEventListener("keyup", canvas_on_keyup);
+            canvas.removeEventListener("keypress", canvas_on_keypress);
+            canvas.removeEventListener("contextmenu", canvas_on_contextmenu);
+            canvas.removeEventListener("wheel", canvas_on_wheel);
+        }
+        app = null;
+        canvas = null;
+        if (typeof (window) !== "undefined") {
+            window.removeEventListener("gamepadconnected", window_on_gamepadconnected);
+            window.removeEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+        }
+        if (typeof (document) !== "undefined") {
+            document.body.removeEventListener("copy", document_on_copy);
+            document.body.removeEventListener("cut", document_on_cut);
+            document.body.removeEventListener("paste", document_on_paste);
+        }
+    }
+    exports_1("Shutdown", Shutdown);
+    function CreateFontsTexture() {
+        const io = ImGui.GetIO();
+        // Backup GL state
+        const last_texture = gl && gl.getParameter(gl.TEXTURE_BINDING_2D);
+        // Build texture atlas
+        // const width: number = 256;
+        // const height: number = 256;
+        // const pixels: Uint8Array = new Uint8Array(4 * width * height).fill(0xff);
+        const { width, height, pixels } = io.Fonts.GetTexDataAsRGBA32(); // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+        // console.log(`font texture ${width} x ${height} @ ${pixels.length}`);
+        // Upload texture to graphics system
+        g_FontTexture = gl && gl.createTexture();
+        gl && gl.bindTexture(gl.TEXTURE_2D, g_FontTexture);
+        gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+        gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+        // gl && gl.pixelStorei(gl.UNPACK_ROW_LENGTH); // WebGL2
+        gl && gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+        // Store our identifier
+        io.Fonts.TexID = g_FontTexture || { foo: "bar" };
+        // console.log("font texture id", g_FontTexture);
+        // Restore modified GL state
+        gl && last_texture && gl.bindTexture(gl.TEXTURE_2D, last_texture);
+    }
+    function DestroyFontsTexture() {
+        const io = ImGui.GetIO();
+        io.Fonts.TexID = null;
+        gl && gl.deleteTexture(g_FontTexture);
+        g_FontTexture = null;
+    }
+    function CreateDeviceObjects() {
+        const vertex_shader = [
+            "#version 300 es",
+            "uniform mat4 ProjMtx;",
+            "in vec2 Position;",
+            "in vec2 UV;",
+            "in vec4 Color;",
+            "out vec2 Frag_UV;",
+            "out vec4 Frag_Color;",
+            "void main() {",
+            "	Frag_UV = UV;",
+            "	Frag_Color = Color;",
+            "	gl_Position = ProjMtx * vec4(Position.xy,0,1);",
+            "}",
+        ];
+        const fragment_shader = [
+            "#version 300 es",
+            "precision mediump float;",
+            "uniform sampler2D Texture;",
+            "in vec2 Frag_UV;",
+            "in vec4 Frag_Color;",
+            "out vec4 OutColor;",
+            "void main() {",
+            "	OutColor = Frag_Color * texture(Texture, Frag_UV);",
+            "}",
+        ];
+        g_ShaderHandle = gl && gl.createProgram();
+        g_VertHandle = gl && gl.createShader(gl.VERTEX_SHADER);
+        g_FragHandle = gl && gl.createShader(gl.FRAGMENT_SHADER);
+        gl && gl.shaderSource(g_VertHandle, vertex_shader.join("\n"));
+        gl && gl.shaderSource(g_FragHandle, fragment_shader.join("\n"));
+        gl && gl.compileShader(g_VertHandle);
+        gl && gl.compileShader(g_FragHandle);
+        gl && gl.attachShader(g_ShaderHandle, g_VertHandle);
+        gl && gl.attachShader(g_ShaderHandle, g_FragHandle);
+        gl && gl.linkProgram(g_ShaderHandle);
+        g_AttribLocationTex = gl && gl.getUniformLocation(g_ShaderHandle, "Texture");
+        g_AttribLocationProjMtx = gl && gl.getUniformLocation(g_ShaderHandle, "ProjMtx");
+        g_AttribLocationPosition = gl && gl.getAttribLocation(g_ShaderHandle, "Position") || 0;
+        g_AttribLocationUV = gl && gl.getAttribLocation(g_ShaderHandle, "UV") || 0;
+        g_AttribLocationColor = gl && gl.getAttribLocation(g_ShaderHandle, "Color") || 0;
+        g_VaoHandle = gl && gl.createVertexArray();
+        g_VboHandle = gl && gl.createBuffer();
+        g_ElementsHandle = gl && gl.createBuffer();
+    }
+    function DestroyDeviceObjects() {
+        DestroyFontsTexture();
+        gl && gl.deleteVertexArray(g_VaoHandle);
+        g_VaoHandle = null;
+        gl && gl.deleteBuffer(g_VboHandle);
+        g_VboHandle = null;
+        gl && gl.deleteBuffer(g_ElementsHandle);
+        g_ElementsHandle = null;
+        g_AttribLocationTex = null;
+        g_AttribLocationProjMtx = null;
+        g_AttribLocationPosition = -1;
+        g_AttribLocationUV = -1;
+        g_AttribLocationColor = -1;
+        gl && gl.deleteProgram(g_ShaderHandle);
+        g_ShaderHandle = null;
+        gl && gl.deleteShader(g_VertHandle);
+        g_VertHandle = null;
+        gl && gl.deleteShader(g_FragHandle);
+        g_FragHandle = null;
+    }
+    return {
+        setters: [
+            function (ImGui_1) {
+                ImGui = ImGui_1;
+            },
+            function (PIXI_1) {
+                PIXI = PIXI_1;
+            },
+            function (U_1) {
+                U = U_1;
+            }
+        ],
+        execute: function () {
+            clipboard_text = "";
+            contexts = [];
+            contextIOs = [];
+            isFirstWindow = true;
+            ImGuiImplInternalRenderer = class ImGuiImplInternalRenderer extends PIXI.ObjectRenderer {
+                constructor(r) {
+                    super(r);
+                }
+                render(owner) {
+                    if (!(owner instanceof ImGuiWindowLayer))
+                        return;
+                    const window = owner.window;
+                    const io = window.io;
+                    const draw_data = ImGui.GetDrawData();
+                    if (draw_data === null) {
+                        throw new Error();
+                    }
+                    gl || console.log(draw_data);
+                    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+                    const fb_width = io.DisplaySize.x * io.DisplayFramebufferScale.x;
+                    const fb_height = io.DisplaySize.y * io.DisplayFramebufferScale.y;
+                    if (fb_width === 0 || fb_height === 0) {
+                        return;
+                    }
+                    draw_data.ScaleClipRects(io.DisplayFramebufferScale);
+                    // Backup GL state
+                    const last_program = gl && gl.getParameter(gl.CURRENT_PROGRAM) || null;
+                    const last_active_texture = gl && gl.getParameter(gl.ACTIVE_TEXTURE) || null;
+                    gl && gl.activeTexture(gl.TEXTURE0);
+                    const last_texture0 = gl && gl.getParameter(gl.TEXTURE_BINDING_2D) || null;
+                    const last_vertex_array = gl && gl.getParameter(gl.VERTEX_ARRAY_BINDING) || null;
+                    const last_array_buffer = gl && gl.getParameter(gl.ARRAY_BUFFER_BINDING) || null;
+                    const last_element_array_buffer = gl && gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING) || null;
+                    // GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+                    const last_viewport = gl && gl.getParameter(gl.VIEWPORT) || null;
+                    const last_scissor_box = gl && gl.getParameter(gl.SCISSOR_BOX) || null;
+                    const last_blend_src_rgb = gl && gl.getParameter(gl.BLEND_SRC_RGB) || null;
+                    const last_blend_dst_rgb = gl && gl.getParameter(gl.BLEND_DST_RGB) || null;
+                    const last_blend_src_alpha = gl && gl.getParameter(gl.BLEND_SRC_ALPHA) || null;
+                    const last_blend_dst_alpha = gl && gl.getParameter(gl.BLEND_DST_ALPHA) || null;
+                    const last_blend_equation_rgb = gl && gl.getParameter(gl.BLEND_EQUATION_RGB) || null;
+                    const last_blend_equation_alpha = gl && gl.getParameter(gl.BLEND_EQUATION_ALPHA) || null;
+                    const last_enable_blend = gl && gl.getParameter(gl.BLEND) || null;
+                    const last_enable_cull_face = gl && gl.getParameter(gl.CULL_FACE) || null;
+                    const last_enable_depth_test = gl && gl.getParameter(gl.DEPTH_TEST) || null;
+                    const last_enable_scissor_test = gl && gl.getParameter(gl.SCISSOR_TEST) || null;
+                    gl.clearColor(0, 0, 0, 0);
+                    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+                    gl && gl.bindVertexArray(g_VaoHandle);
+                    // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
+                    gl && gl.enable(gl.BLEND);
+                    gl && gl.blendEquation(gl.FUNC_ADD);
+                    gl && gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE);
+                    gl && gl.disable(gl.CULL_FACE);
+                    gl && gl.disable(gl.DEPTH_TEST);
+                    gl && gl.enable(gl.SCISSOR_TEST);
+                    // glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+                    // Setup viewport, orthographic projection matrix
+                    // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+                    gl && gl.viewport(0, 0, fb_width, fb_height);
+                    const L = draw_data.DisplayPos.x;
+                    const R = draw_data.DisplayPos.x + draw_data.DisplaySize.x;
+                    const T = draw_data.DisplayPos.y;
+                    const B = draw_data.DisplayPos.y + draw_data.DisplaySize.y;
+                    // we actually flip the bottom and top here to match with PIXI's texture usage
+                    const ortho_projection = new Float32Array([
+                        2.0 / (R - L), 0.0, 0.0, 0.0,
+                        0.0, 2.0 / (B - T), 0.0, 0.0,
+                        0.0, 0.0, -1.0, 0.0,
+                        (R + L) / (L - R), (B + T) / (T - B), 0.0, 1.0,
+                    ]);
+                    gl && gl.useProgram(g_ShaderHandle);
+                    gl && gl.uniform1i(g_AttribLocationTex, 0);
+                    gl && g_AttribLocationProjMtx && gl.uniformMatrix4fv(g_AttribLocationProjMtx, false, ortho_projection);
+                    // Render command lists
+                    gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationPosition);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationUV);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationColor);
+                    gl && gl.vertexAttribPointer(g_AttribLocationPosition, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertPosOffset);
+                    gl && gl.vertexAttribPointer(g_AttribLocationUV, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertUVOffset);
+                    gl && gl.vertexAttribPointer(g_AttribLocationColor, 4, gl.UNSIGNED_BYTE, true, ImGui.ImDrawVertSize, ImGui.ImDrawVertColOffset);
+                    // Draw
+                    const pos = draw_data.DisplayPos;
+                    const idx_buffer_type = gl && ((ImGui.ImDrawIdxSize === 4) ? gl.UNSIGNED_INT : gl.UNSIGNED_SHORT) || 0;
+                    draw_data.IterateDrawLists((draw_list) => {
+                        gl || console.log(draw_list);
+                        gl || console.log("VtxBuffer.length", draw_list.VtxBuffer.length);
+                        gl || console.log("IdxBuffer.length", draw_list.IdxBuffer.length);
+                        let idx_buffer_offset = 0;
+                        gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+                        gl && gl.bufferData(gl.ARRAY_BUFFER, draw_list.VtxBuffer, gl.STREAM_DRAW);
+                        gl && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+                        gl && gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, draw_list.IdxBuffer, gl.STREAM_DRAW);
+                        draw_list.IterateDrawCmds((draw_cmd) => {
+                            gl || console.log(draw_cmd);
+                            gl || console.log("ElemCount", draw_cmd.ElemCount);
+                            gl || console.log("ClipRect", draw_cmd.ClipRect.x, draw_cmd.ClipRect.y, draw_cmd.ClipRect.z - draw_cmd.ClipRect.x, draw_cmd.ClipRect.w - draw_cmd.ClipRect.y);
+                            gl || console.log("TextureId", draw_cmd.TextureId);
+                            if (!gl) {
+                                console.log("i: pos.x pos.y uv.x uv.y col");
+                                for (let i = 0; i < Math.min(3, draw_cmd.ElemCount); ++i) {
+                                    const view = new ImGui.ImDrawVert(draw_list.VtxBuffer.buffer, draw_list.VtxBuffer.byteOffset + i * ImGui.ImDrawVertSize);
+                                    console.log(`${i}: ${view.pos[0].toFixed(2)} ${view.pos[1].toFixed(2)} ${view.uv[0].toFixed(5)} ${view.uv[1].toFixed(5)} ${("00000000" + view.col[0].toString(16)).substr(-8)}`);
+                                }
+                            }
+                            if (draw_cmd.UserCallback !== null) {
+                                // User callback (registered via ImDrawList::AddCallback)
+                                draw_cmd.UserCallback(draw_list, draw_cmd);
+                            }
+                            else {
+                                const clip_rect = new ImGui.ImVec4(draw_cmd.ClipRect.x - pos.x, draw_cmd.ClipRect.y - pos.y, draw_cmd.ClipRect.z - pos.x, draw_cmd.ClipRect.w - pos.y);
+                                if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0 && clip_rect.w >= 0.0) {
+                                    // Apply scissor/clipping rectangle
+                                    gl && gl.scissor(clip_rect.x, clip_rect.y, clip_rect.z - clip_rect.x, clip_rect.w - clip_rect.y);
+                                    // Bind texture, Draw
+                                    gl && gl.bindTexture(gl.TEXTURE_2D, draw_cmd.TextureId);
+                                    gl && gl.drawElements(gl.TRIANGLES, draw_cmd.ElemCount, idx_buffer_type, idx_buffer_offset);
+                                }
+                            }
+                            idx_buffer_offset += draw_cmd.ElemCount * ImGui.ImDrawIdxSize;
+                        });
+                    });
+                    // Restore modified GL state
+                    gl && (last_program !== null) && gl.useProgram(last_program);
+                    gl && (last_texture0 !== null) && gl.bindTexture(gl.TEXTURE_2D, last_texture0);
+                    gl && (last_active_texture !== null) && gl.activeTexture(last_active_texture);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationPosition);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationUV);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationColor);
+                    gl && (last_vertex_array !== null) && gl.bindVertexArray(last_vertex_array);
+                    gl && (last_array_buffer !== null) && gl.bindBuffer(gl.ARRAY_BUFFER, last_array_buffer);
+                    gl && (last_element_array_buffer !== null) && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+                    gl && (last_viewport !== null) && gl.viewport(last_viewport[0], last_viewport[1], last_viewport[2], last_viewport[3]);
+                    gl && (last_scissor_box !== null) && gl.scissor(last_scissor_box[0], last_scissor_box[1], last_scissor_box[2], last_scissor_box[3]);
+                    gl && (last_blend_equation_rgb !== null && last_blend_equation_alpha !== null) && gl.blendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+                    gl && (last_blend_src_rgb !== null && last_blend_src_alpha !== null && last_blend_dst_rgb !== null && last_blend_dst_alpha !== null) && gl.blendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
+                    gl && (last_enable_blend ? gl.enable(gl.BLEND) : gl.disable(gl.BLEND));
+                    gl && (last_enable_cull_face ? gl.enable(gl.CULL_FACE) : gl.disable(gl.CULL_FACE));
+                    gl && (last_enable_depth_test ? gl.enable(gl.DEPTH_TEST) : gl.disable(gl.DEPTH_TEST));
+                    gl && (last_enable_scissor_test ? gl.enable(gl.SCISSOR_TEST) : gl.disable(gl.SCISSOR_TEST));
+                    // glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
+                }
+            };
+            gl = null;
+            app = null;
+            ImGuiWindowLayer = class ImGuiWindowLayer extends PIXI.Sprite {
+                constructor(window, tex) {
+                    super();
+                    this.pluginName = "imgui_renderer";
+                    this.window = window;
+                }
+            };
+            ImGuiWindow = class ImGuiWindow extends PIXI.Container {
+                constructor(sizeX, sizeY, update) {
+                    super();
+                    this.baseTex = new PIXI.BaseRenderTexture({ scaleMode: PIXI.SCALE_MODES.LINEAR, resolution: 1, type: PIXI.TYPES.FLOAT, format: PIXI.FORMATS.RGBA });
+                    this.tex = new PIXI.RenderTexture(this.baseTex);
+                    this.surface = new PIXI.Sprite(this.tex);
+                    this.imgui = new ImGuiWindowLayer(this, this.tex);
+                    this.ctx = ImGui.CreateContext(contextIOs.length == 0 ? null : contextIOs[0].Fonts);
+                    ImGui.SetCurrentContext(this.ctx);
+                    this.io = ImGui.GetIO();
+                    contexts.push(this.ctx);
+                    contextIOs.push(this.io);
+                    if (contexts.length == 1) {
+                        CreateFontsTexture();
+                    }
+                    if (typeof (window) !== "undefined") {
+                        ImGui.LoadIniSettingsFromMemory(window.localStorage.getItem("imgui.ini") || "");
+                    }
+                    if (typeof (navigator) !== "undefined") {
+                        this.io.ConfigMacOSXBehaviors = navigator.platform.match(/Mac/) !== null;
+                    }
+                    this.io.SetClipboardTextFn = (user_data, text) => {
+                        clipboard_text = text;
+                        // console.log(`set clipboard_text: "${clipboard_text}"`);
+                        if (typeof navigator !== "undefined" && typeof navigator.clipboard !== "undefined") {
+                            // console.log(`clipboard.writeText: "${clipboard_text}"`);
+                            navigator.clipboard.writeText(clipboard_text).then(() => {
+                                // console.log(`clipboard.writeText: "${clipboard_text}" done.`);
+                            });
+                        }
+                    };
+                    this.io.GetClipboardTextFn = (user_data) => {
+                        // if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+                        //     console.log(`clipboard.readText: "${clipboard_text}"`);
+                        //     (navigator as any).clipboard.readText().then((text: string): void => {
+                        //         clipboard_text = text;
+                        //         console.log(`clipboard.readText: "${clipboard_text}" done.`);
+                        //     });
+                        // }
+                        // console.log(`get clipboard_text: "${clipboard_text}"`);
+                        return clipboard_text;
+                    };
+                    this.io.ClipboardUserData = null;
+                    // Setup back-end capabilities flags
+                    this.io.BackendFlags |= ImGui.BackendFlags.HasMouseCursors; // We can honor GetMouseCursor() values (optional)
+                    // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+                    this.io.KeyMap[ImGui.Key.Tab] = 9;
+                    this.io.KeyMap[ImGui.Key.LeftArrow] = 37;
+                    this.io.KeyMap[ImGui.Key.RightArrow] = 39;
+                    this.io.KeyMap[ImGui.Key.UpArrow] = 38;
+                    this.io.KeyMap[ImGui.Key.DownArrow] = 40;
+                    this.io.KeyMap[ImGui.Key.PageUp] = 33;
+                    this.io.KeyMap[ImGui.Key.PageDown] = 34;
+                    this.io.KeyMap[ImGui.Key.Home] = 36;
+                    this.io.KeyMap[ImGui.Key.End] = 35;
+                    this.io.KeyMap[ImGui.Key.Insert] = 45;
+                    this.io.KeyMap[ImGui.Key.Delete] = 46;
+                    this.io.KeyMap[ImGui.Key.Backspace] = 8;
+                    this.io.KeyMap[ImGui.Key.Space] = 32;
+                    this.io.KeyMap[ImGui.Key.Enter] = 13;
+                    this.io.KeyMap[ImGui.Key.Escape] = 27;
+                    this.io.KeyMap[ImGui.Key.A] = 65;
+                    this.io.KeyMap[ImGui.Key.C] = 67;
+                    this.io.KeyMap[ImGui.Key.V] = 86;
+                    this.io.KeyMap[ImGui.Key.X] = 88;
+                    this.io.KeyMap[ImGui.Key.Y] = 89;
+                    this.io.KeyMap[ImGui.Key.Z] = 90;
+                    this.update = update;
+                    this.resize(sizeX, sizeY);
+                    this.imgui.pluginName = 'imgui_renderer';
+                    this.addChild(this.surface);
+                    app.renderer.plugins.interaction.addListener("mousedown", this.mouseDown.bind(this));
+                    app.renderer.plugins.interaction.addListener("mouseup", this.mouseUp.bind(this));
+                    app.ticker.add(this.updateInternal.bind(this));
+                    this.interactive = false;
+                    this.interactiveChildren = true;
+                    this.surface.interactive = false;
+                }
+                getSizeX() { return this.sizeX; }
+                getSizeY() { return this.sizeY; }
+                withContext(cb) {
+                    ImGui.SetCurrentContext(this.ctx);
+                    cb();
+                }
+                mouseDown(e) {
+                    if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface) {
+                        this.io.MouseDown[mouse_button_map[0]] = true;
+                    }
+                }
+                mouseUp(e) {
+                    if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface) {
+                        this.io.MouseDown[mouse_button_map[0]] = false;
+                    }
+                }
+                resize(sizeX, sizeY) {
+                    this.sizeX = sizeX;
+                    this.sizeY = sizeY;
+                    this.baseTex.resize(sizeX, sizeY);
+                    this.tex.frame = new PIXI.Rectangle(0, 0, this.baseTex.width, this.baseTex.height);
+                }
+                updateInternal(deltaTime) {
+                    const dt = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+                    ImGui.SetCurrentContext(this.ctx);
+                    if (this.io.WantSaveIniSettings) {
+                        this.io.WantSaveIniSettings = false;
+                        if (typeof (window) !== "undefined") {
+                            window.localStorage.setItem("imgui.ini", ImGui.SaveIniSettingsToMemory());
+                        }
+                    }
+                    this.io.DisplaySize.x = this.sizeX;
+                    this.io.DisplaySize.y = this.sizeY;
+                    this.io.DisplayFramebufferScale.x = 1;
+                    this.io.DisplayFramebufferScale.y = 1;
+                    this.io.DeltaTime = dt;
+                    let localPos = this.toLocal(app.renderer.plugins.interaction.mouse.global);
+                    if (localPos.x < 0 || localPos.y < 0 || localPos.x >= this.sizeX || localPos.y >= this.sizeY) {
+                        localPos = new PIXI.Point(-Number.MAX_VALUE, -Number.MAX_VALUE);
+                    }
+                    this.io.MousePos.x = localPos.x;
+                    this.io.MousePos.y = localPos.y;
+                    if (this.io.WantSetMousePos) {
+                        console.log("TODO: MousePos", this.io.MousePos.x, this.io.MousePos.y);
+                    }
+                    if (typeof (document) !== "undefined") {
+                        if (this.io.MouseDrawCursor) {
+                            document.body.style.cursor = "none";
+                        }
+                        else {
+                            switch (ImGui.GetMouseCursor()) {
+                                case ImGui.MouseCursor.None:
+                                    document.body.style.cursor = "none";
+                                    break;
+                                default:
+                                case ImGui.MouseCursor.Arrow:
+                                    document.body.style.cursor = "default";
+                                    break;
+                                case ImGui.MouseCursor.TextInput:
+                                    document.body.style.cursor = "text";
+                                    break; // When hovering over InputText, etc.
+                                case ImGui.MouseCursor.ResizeAll:
+                                    document.body.style.cursor = "move";
+                                    break; // Unused
+                                case ImGui.MouseCursor.ResizeNS:
+                                    document.body.style.cursor = "ns-resize";
+                                    break; // When hovering over an horizontal border
+                                case ImGui.MouseCursor.ResizeEW:
+                                    document.body.style.cursor = "ew-resize";
+                                    break; // When hovering over a vertical border or a column
+                                case ImGui.MouseCursor.ResizeNESW:
+                                    document.body.style.cursor = "nesw-resize";
+                                    break; // When hovering over the bottom-left corner of a window
+                                case ImGui.MouseCursor.ResizeNWSE:
+                                    document.body.style.cursor = "nwse-resize";
+                                    break; // When hovering over the bottom-right corner of a window
+                                case ImGui.MouseCursor.Hand:
+                                    document.body.style.cursor = "move";
+                                    break;
+                            }
+                        }
+                    }
+                    // Gamepad navigation mapping [BETA]
+                    for (let i = 0; i < this.io.NavInputs.length; ++i) {
+                        this.io.NavInputs[i] = 0.0;
+                    }
+                    if (this.io.ConfigFlags & ImGui.ConfigFlags.NavEnableGamepad) {
+                        // Update gamepad inputs
+                        const gamepads = (typeof (navigator) !== "undefined" && typeof (navigator.getGamepads) === "function") ? navigator.getGamepads() : [];
+                        for (let i = 0; i < gamepads.length; ++i) {
+                            const gamepad = gamepads[i];
+                            if (!gamepad) {
+                                continue;
+                            }
+                            const buttons_count = gamepad.buttons.length;
+                            const axes_count = gamepad.axes.length;
+                            const MAP_BUTTON = function (NAV_NO, BUTTON_NO) {
+                                if (!gamepad) {
+                                    return;
+                                }
+                                if (buttons_count > BUTTON_NO && gamepad.buttons[BUTTON_NO].pressed)
+                                    this.io.NavInputs[NAV_NO] = 1.0;
+                            };
+                            const MAP_ANALOG = function (NAV_NO, AXIS_NO, V0, V1) {
+                                if (!gamepad) {
+                                    return;
+                                }
+                                let v = (axes_count > AXIS_NO) ? gamepad.axes[AXIS_NO] : V0;
+                                v = (v - V0) / (V1 - V0);
+                                if (v > 1.0)
+                                    v = 1.0;
+                                if (this.io.NavInputs[NAV_NO] < v)
+                                    this.io.NavInputs[NAV_NO] = v;
+                            };
+                            // TODO: map input based on vendor and product id
+                            // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/id
+                            const match = gamepad.id.match(/^([0-9a-f]{4})-([0-9a-f]{4})-.*$/);
+                            const match_chrome = gamepad.id.match(/^.*\(.*Vendor: ([0-9a-f]{4}) Product: ([0-9a-f]{4})\).*$/);
+                            const vendor = (match && match[1]) || (match_chrome && match_chrome[1]) || "0000";
+                            const product = (match && match[2]) || (match_chrome && match_chrome[2]) || "0000";
+                            switch (vendor + product) {
+                                case "046dc216": // Logitech Logitech Dual Action (Vendor: 046d Product: c216)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 1); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 2); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 0); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_ANALOG(ImGui.NavInput.DpadLeft, 4, -0.3, -0.9); // D-Pad Left
+                                    MAP_ANALOG(ImGui.NavInput.DpadRight, 4, +0.3, +0.9); // D-Pad Right
+                                    MAP_ANALOG(ImGui.NavInput.DpadUp, 5, -0.3, -0.9); // D-Pad Up
+                                    MAP_ANALOG(ImGui.NavInput.DpadDown, 5, +0.3, +0.9); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 6); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 7); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                case "046dc21d": // Logitech Gamepad F310 (STANDARD GAMEPAD Vendor: 046d Product: c21d)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 0); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 1); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 2); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_BUTTON(ImGui.NavInput.DpadLeft, 14); // D-Pad Left
+                                    MAP_BUTTON(ImGui.NavInput.DpadRight, 15); // D-Pad Right
+                                    MAP_BUTTON(ImGui.NavInput.DpadUp, 12); // D-Pad Up
+                                    MAP_BUTTON(ImGui.NavInput.DpadDown, 13); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_ANALOG(ImGui.NavInput.TweakSlow, 6, +0.3, +0.9); // L2 / LT
+                                    MAP_ANALOG(ImGui.NavInput.TweakFast, 7, +0.3, +0.9); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                case "2dc86001": // 8Bitdo SN30 Pro  8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6001)
+                                case "2dc86101": // 8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6101)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 1); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 0); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 4); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_ANALOG(ImGui.NavInput.DpadLeft, 6, -0.3, -0.9); // D-Pad Left
+                                    MAP_ANALOG(ImGui.NavInput.DpadRight, 6, +0.3, +0.9); // D-Pad Right
+                                    MAP_ANALOG(ImGui.NavInput.DpadUp, 7, -0.3, -0.9); // D-Pad Up
+                                    MAP_ANALOG(ImGui.NavInput.DpadDown, 7, +0.3, +0.9); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 6); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 7); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 8); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 9); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                default: // standard gamepad: https://w3c.github.io/gamepad/#remapping
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 0); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 1); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 2); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_BUTTON(ImGui.NavInput.DpadLeft, 14); // D-Pad Left
+                                    MAP_BUTTON(ImGui.NavInput.DpadRight, 15); // D-Pad Right
+                                    MAP_BUTTON(ImGui.NavInput.DpadUp, 12); // D-Pad Up
+                                    MAP_BUTTON(ImGui.NavInput.DpadDown, 13); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 6); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 7); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                            }
+                        }
+                    }
+                    ImGui.NewFrame();
+                    this.update(dt);
+                    ImGui.EndFrame();
+                    ImGui.Render();
+                    app.renderer.render(this.imgui, this.tex);
+                    this.surface.interactive = this.io.WantCaptureMouse;
+                }
+            };
+            exports_1("ImGuiWindow", ImGuiWindow);
+            canvas = null;
+            //export let gl: WebGL2RenderingContext | null = null;
+            g_ShaderHandle = null;
+            g_VertHandle = null;
+            g_FragHandle = null;
+            g_AttribLocationTex = null;
+            g_AttribLocationProjMtx = null;
+            g_AttribLocationPosition = -1;
+            g_AttribLocationUV = -1;
+            g_AttribLocationColor = -1;
+            g_VaoHandle = null;
+            g_VboHandle = null;
+            g_ElementsHandle = null;
+            g_FontTexture = null;
+            // MouseEvent.button
+            // A number representing a given button:
+            // 0: Main button pressed, usually the left button or the un-initialized state
+            // 1: Auxiliary button pressed, usually the wheel button or the middle button (if present)
+            // 2: Secondary button pressed, usually the right button
+            // 3: Fourth button, typically the Browser Back button
+            // 4: Fifth button, typically the Browser Forward button
+            mouse_button_map = [0, 2, 1, 3, 4];
+        }
+    };
+});
+//# sourceMappingURL=imgui_impl.js.map
\ No newline at end of file
diff --git a/src/imgui_impl.js.map b/src/imgui_impl.js.map
new file mode 100644
index 0000000..bcb545f
--- /dev/null
+++ b/src/imgui_impl.js.map
@@ -0,0 +1 @@
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\ No newline at end of file

diff --git a/.gitmodules b/.gitmodules
index d6b45d7..fc2be7a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,7 @@
 [submodule "emsdk"]
 	path = emsdk
 	url = https://github.com/emscripten-core/emsdk.git
+	ignore = untracked
+[submodule "pixi.js"]
+	path = pixi.js
+	url = https://git.mhack.io/git/mark/pixi.js.git
diff --git a/imgui-js b/imgui-js
index 9f694ef..9536eca 160000
--- a/imgui-js
+++ b/imgui-js
@@ -1 +1 @@
-Subproject commit 9f694ef7e8e7251c32f7811ba39938951a12097a
+Subproject commit 9536ecad287eb76812087cd3fee1aaacb448c027
diff --git a/indexdev.html b/indexdev.html
index 2f6c3b3..3d27479 100644
--- a/indexdev.html
+++ b/indexdev.html
@@ -2,22 +2,16 @@
     <head>
         <title>7GUI</title>
         <script src="node_modules/systemjs/dist/system.js"></script>
-        <!--
-        <script type="systemjs-importmap">
-            {
-                "imports": {
-                    "imgui-js/example/imgui_impl": "imgui-js/dist/imgui_impl.umd.js"
-                }
-            }
-        </script>
-        -->
         <script>
             System.config({
                 map: {
-                    "imgui-js": "./imgui-js"
+                    "imgui-js": "./imgui-js",
+                    "pixi.js": "./node_modules/pixi.js"
                 },
                 packages: {
-                    "imgui-js": { main: "imgui.js", }
+                    "imgui-js": { main: "imgui.js" },
+                    "pixi.js": { main: "dist/pixi.js" },
+                    "./": { map: { "src/utils": "./src/utils.js", "src/imgui_impl": "./src/imgui_impl.js" } }
                 }
             });
             System.import("./src/main.js");
diff --git a/package-lock.json b/package-lock.json
index ed52494..8bda7e5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,16 +4,34 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@pixi/constants": {
+      "version": "5.1.0",
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+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz",
+      "integrity": "sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==",
       "dev": true
     },
     "prr": {
@@ -4607,6 +5077,16 @@
         "safe-buffer": "^5.1.2"
       }
     },
+    "punycode": {
+      "version": "1.3.2",
+      "resolved": "https://registry.npmjs.org/punycode/-/punycode-1.3.2.tgz",
+      "integrity": "sha1-llOgNvt8HuQjQvIyXM7v6jkmxI0="
+    },
+    "querystring": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/querystring/-/querystring-0.2.0.tgz",
+      "integrity": "sha1-sgmEkgO7Jd+CDadW50cAWHhSFiA="
+    },
     "randombytes": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/randombytes/-/randombytes-2.1.0.tgz",
@@ -4645,17 +5125,6 @@
         "safe-buffer": "~5.1.1",
         "string_decoder": "~1.1.1",
         "util-deprecate": "~1.0.1"
-      },
-      "dependencies": {
-        "string_decoder": {
-          "version": "1.1.1",
-          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
-          "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
-          "dev": true,
-          "requires": {
-            "safe-buffer": "~5.1.0"
-          }
-        }
       }
     },
     "readdirp": {
@@ -4698,9 +5167,9 @@
       "dev": true
     },
     "resolve": {
-      "version": "1.11.0",
-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.11.0.tgz",
-      "integrity": "sha512-WL2pBDjqT6pGUNSUzMw00o4T7If+z4H2x3Gz893WoUQ5KW8Vr9txp00ykiP16VBaZF5+j/OcXJHZ9+PCvdiDKw==",
+      "version": "1.11.1",
+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.11.1.tgz",
+      "integrity": "sha512-vIpgF6wfuJOZI7KKKSP+HmiKggadPQAdsp5HiC1mvqnfp0gF1vdwgBWZIdrVft9pgqoMFQN+R7BSWZiBxx+BBw==",
       "dev": true,
       "requires": {
         "path-parse": "^1.0.6"
@@ -4712,6 +5181,15 @@
       "integrity": "sha1-LGN/53yJOv0qZj/iGqkIAGjiBSo=",
       "dev": true
     },
+    "resource-loader": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/resource-loader/-/resource-loader-3.0.1.tgz",
+      "integrity": "sha512-fBuCRbEHdLCI1eglzQhUv9Rrdcmqkydr1r6uHE2cYHvRBrcLXeSmbE/qI/urFt8rPr/IGxir3BUwM5kUK8XoyA==",
+      "requires": {
+        "mini-signals": "^1.2.0",
+        "parse-uri": "^1.0.0"
+      }
+    },
     "ret": {
       "version": "0.1.15",
       "resolved": "https://registry.npmjs.org/ret/-/ret-0.1.15.tgz",
@@ -4729,33 +5207,26 @@
       }
     },
     "rollup": {
-      "version": "1.15.6",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.15.6.tgz",
-      "integrity": "sha512-s3Vn3QJQ5YVFfIG4nXoG9VdL1I37IZsft+4ZyeBhxE0df1kCFz9e+4bEAbR4mKH3pvBO9e9xjdxWPhhIp0r9ow==",
+      "version": "1.17.0",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.17.0.tgz",
+      "integrity": "sha512-k/j1m0NIsI4SYgCJR4MWPstGJOWfJyd6gycKoMhyoKPVXxm+L49XtbUwZyFsrSU2YXsOkM4u1ll9CS/ZgJBUpw==",
       "requires": {
         "@types/estree": "0.0.39",
-        "@types/node": "^12.0.8",
-        "acorn": "^6.1.1"
-      },
-      "dependencies": {
-        "@types/node": {
-          "version": "12.0.8",
-          "resolved": "https://registry.npmjs.org/@types/node/-/node-12.0.8.tgz",
-          "integrity": "sha512-b8bbUOTwzIY3V5vDTY1fIJ+ePKDUBqt2hC2woVGotdQQhG/2Sh62HOKHrT7ab+VerXAcPyAiTEipPu/FsreUtg=="
-        }
+        "@types/node": "^12.6.2",
+        "acorn": "^6.2.0"
       }
     },
     "rollup-plugin-commonjs": {
-      "version": "10.0.0",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.0.tgz",
-      "integrity": "sha512-B8MoX5GRpj3kW4+YaFO/di2JsZkBxNjVmZ9LWjUoTAjq8N9wc7HObMXPsrvolVV9JXVtYSscflXM14A19dXPNQ==",
+      "version": "10.0.1",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.1.tgz",
+      "integrity": "sha512-x0PcCVdEc4J8igv1qe2vttz8JKAKcTs3wfIA3L8xEty3VzxgORLrzZrNWaVMc+pBC4U3aDOb9BnWLAQ8J11vkA==",
       "dev": true,
       "requires": {
-        "estree-walker": "^0.6.0",
+        "estree-walker": "^0.6.1",
         "is-reference": "^1.1.2",
         "magic-string": "^0.25.2",
-        "resolve": "^1.10.1",
-        "rollup-pluginutils": "^2.7.0"
+        "resolve": "^1.11.0",
+        "rollup-pluginutils": "^2.8.1"
       }
     },
     "rollup-plugin-node-builtins": {
@@ -4771,16 +5242,16 @@
       }
     },
     "rollup-plugin-node-resolve": {
-      "version": "5.0.3",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.0.3.tgz",
-      "integrity": "sha512-Mhhmf0x493xgUPEsRELnU1VM+4+WO82knWkAbZ0d2DvZQZJMbhzyQK/hqtpVscoRru1EqlK3TM1kK9ro469wPw==",
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.2.0.tgz",
+      "integrity": "sha512-jUlyaDXts7TW2CqQ4GaO5VJ4PwwaV8VUGA7+km3n6k6xtOEacf61u0VXwN80phY/evMcaS+9eIeJ9MOyDxt5Zw==",
       "dev": true,
       "requires": {
         "@types/resolve": "0.0.8",
         "builtin-modules": "^3.1.0",
         "is-module": "^1.0.0",
-        "resolve": "^1.11.0",
-        "rollup-pluginutils": "^2.8.0"
+        "resolve": "^1.11.1",
+        "rollup-pluginutils": "^2.8.1"
       }
     },
     "rollup-plugin-typescript2": {
@@ -4846,35 +5317,6 @@
       "integrity": "sha1-uYSPJdbPNjMwc+ye+IVtQvEjPlI=",
       "dev": true
     },
-    "send": {
-      "version": "0.17.1",
-      "resolved": "https://registry.npmjs.org/send/-/send-0.17.1.tgz",
-      "integrity": "sha512-BsVKsiGcQMFwT8UxypobUKyv7irCNRHk1T0G680vk88yf6LBByGcZJOTJCrTP2xVN6yI+XjPJcNuE3V4fT9sAg==",
-      "dev": true,
-      "requires": {
-        "debug": "2.6.9",
-        "depd": "~1.1.2",
-        "destroy": "~1.0.4",
-        "encodeurl": "~1.0.2",
-        "escape-html": "~1.0.3",
-        "etag": "~1.8.1",
-        "fresh": "0.5.2",
-        "http-errors": "~1.7.2",
-        "mime": "1.6.0",
-        "ms": "2.1.1",
-        "on-finished": "~2.3.0",
-        "range-parser": "~1.2.1",
-        "statuses": "~1.5.0"
-      },
-      "dependencies": {
-        "ms": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
-          "dev": true
-        }
-      }
-    },
     "serve-index": {
       "version": "1.9.1",
       "resolved": "https://registry.npmjs.org/serve-index/-/serve-index-1.9.1.tgz",
@@ -4902,6 +5344,12 @@
             "statuses": ">= 1.4.0 < 2"
           }
         },
+        "inherits": {
+          "version": "2.0.3",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+          "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+          "dev": true
+        },
         "setprototypeof": {
           "version": "1.1.0",
           "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
@@ -4911,9 +5359,9 @@
       }
     },
     "set-value": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.0.tgz",
-      "integrity": "sha512-hw0yxk9GT/Hr5yJEYnHNKYXkIA8mVJgd9ditYZCe16ZczcaELYYcfvaXesNACk2O8O0nTiPQcQhGUQj8JLzeeg==",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.1.tgz",
+      "integrity": "sha512-JxHc1weCN68wRY0fhCoXpyK55m/XPHafOmK4UWD7m2CI14GMcFypt4w/0+NV5f/ZMby2F6S2wwA7fgynh9gWSw==",
       "dev": true,
       "requires": {
         "extend-shallow": "^2.0.1",
@@ -5082,9 +5530,9 @@
       "dev": true
     },
     "sourcemap-codec": {
-      "version": "1.4.4",
-      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.4.tgz",
-      "integrity": "sha512-CYAPYdBu34781kLHkaW3m6b/uUSyMOC2R61gcYMWooeuaGtjof86ZA/8T+qVPPt7np1085CR9hmMGrySwEc8Xg==",
+      "version": "1.4.6",
+      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.6.tgz",
+      "integrity": "sha512-1ZooVLYFxC448piVLBbtOxFcXwnymH9oUF8nRd3CuYDVvkRBxRl6pB4Mtas5a4drtL+E8LDgFkQNcgIw6tc8Hg==",
       "dev": true
     },
     "split": {
@@ -5148,10 +5596,13 @@
       "dev": true
     },
     "string_decoder": {
-      "version": "0.10.31",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
-      "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
-      "dev": true
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "~5.1.0"
+      }
     },
     "systemjs": {
       "version": "0.21.6",
@@ -5231,44 +5682,21 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.5.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.2.tgz",
-      "integrity": "sha512-7KxJovlYhTX5RaRbUdkAXN1KUZ8PwWlTzQdHV6xNqvuFOs7+WBo10TQUqT19Q/Jz2hk5v9TQDIhyLhhJY4p5AA==",
+      "version": "3.5.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.3.tgz",
+      "integrity": "sha512-ACzBtm/PhXBDId6a6sDJfroT2pOWt/oOnk4/dElG5G33ZL776N3Y6/6bKZJBFpd+b05F3Ct9qDjMeJmRWtE2/g==",
       "dev": true
     },
     "union-value": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz",
-      "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",
+      "integrity": "sha512-tJfXmxMeWYnczCVs7XAEvIV7ieppALdyepWMkHkwciRpZraG/xwT+s2JN8+pr1+8jCRf80FFzvr+MpQeeoF4Xg==",
       "dev": true,
       "requires": {
         "arr-union": "^3.1.0",
         "get-value": "^2.0.6",
         "is-extendable": "^0.1.1",
-        "set-value": "^0.4.3"
-      },
-      "dependencies": {
-        "extend-shallow": {
-          "version": "2.0.1",
-          "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
-          "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
-          "dev": true,
-          "requires": {
-            "is-extendable": "^0.1.0"
-          }
-        },
-        "set-value": {
-          "version": "0.4.3",
-          "resolved": "https://registry.npmjs.org/set-value/-/set-value-0.4.3.tgz",
-          "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=",
-          "dev": true,
-          "requires": {
-            "extend-shallow": "^2.0.1",
-            "is-extendable": "^0.1.1",
-            "is-plain-object": "^2.0.1",
-            "to-object-path": "^0.3.0"
-          }
-        }
+        "set-value": "^2.0.1"
       }
     },
     "universalify": {
@@ -5341,6 +5769,15 @@
       "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
       "dev": true
     },
+    "url": {
+      "version": "0.11.0",
+      "resolved": "https://registry.npmjs.org/url/-/url-0.11.0.tgz",
+      "integrity": "sha1-ODjpfPxgUh63PFJajlW/3Z4uKPE=",
+      "requires": {
+        "punycode": "1.3.2",
+        "querystring": "0.2.0"
+      }
+    },
     "use": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
@@ -5372,12 +5809,13 @@
       "dev": true
     },
     "websocket-driver": {
-      "version": "0.7.0",
-      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.0.tgz",
-      "integrity": "sha1-DK+dLXVdk67gSdS90NP+LMoqJOs=",
+      "version": "0.7.3",
+      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.3.tgz",
+      "integrity": "sha512-bpxWlvbbB459Mlipc5GBzzZwhoZgGEZLuqPaR0INBGnPAY1vdBX6hPnoFXiw+3yWxDuHyQjO2oXTMyS8A5haFg==",
       "dev": true,
       "requires": {
-        "http-parser-js": ">=0.4.0",
+        "http-parser-js": ">=0.4.0 <0.4.11",
+        "safe-buffer": ">=5.1.0",
         "websocket-extensions": ">=0.1.1"
       }
     },
diff --git a/package.json b/package.json
index 07cf1ea..8aafc46 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,9 @@
     "build": "tsc",
     "rollup": "rollup -c",
     "watch": "npx live-server --open=index.html --watch='./*.html,./*.js'",
-    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./*.js'"
+    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./src/*.js'",
+    "pixi": "cd pixi.js && npm run local && cd .. && npm run pixi:install",
+    "pixi:install": "rm -rf node_modules/pixi.js && rm package-lock.json"
   },
   "repository": {
     "type": "git",
@@ -17,13 +19,15 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@types/systemjs": "^0.20.6",
+    "@types/webgl2": "0.0.5",
     "imgui-js": "file:./imgui-js",
+    "pixi.js": "file:pixi.js/bundles/pixi.js/pixi.js-5.1.4.tgz",
     "rollup": "^1.15.6",
     "systemjs": "^0.21.5"
   },
   "devDependencies": {
     "@types/node": "^12.0.0",
+    "@types/systemjs": "^0.20.6",
     "live-server": "^1.2.1",
     "rollup-plugin-commonjs": "^10.0.0",
     "rollup-plugin-node-builtins": "^2.1.2",
diff --git a/pixi.js b/pixi.js
new file mode 160000
index 0000000..1b78731
--- /dev/null
+++ b/pixi.js
@@ -0,0 +1 @@
+Subproject commit 1b78731948b57c635a2e65444c387eed31ec7428
diff --git a/session b/session
index bbf5582..06b9a8d 100644
--- a/session
+++ b/session
@@ -1,322 +1,62 @@
 let SessionLoad = 1
 if &cp | set nocp | endif
-let s:cpo_save=&cpo
-set cpo&vim
-imap <Nul> <C-Space>
-inoremap <expr> <Up> pumvisible() ? "\" : "\<Up>"
-inoremap <expr> <S-Tab> pumvisible() ? "\" : "\<S-Tab>"
-inoremap <expr> <Down> pumvisible() ? "\" : "\<Down>"
-nnoremap <silent>  :TmuxNavigateLeft
-nnoremap <silent> <NL> :TmuxNavigateDown
-nnoremap <silent>  :TmuxNavigateUp
-nnoremap <silent>  :TmuxNavigateRight
-nnoremap <silent>  :TmuxNavigatePrevious
-nnoremap \d :YcmShowDetailedDiagnostic
-vnoremap <silent> \c :call CopyMarkWithCursor("<", ">")
-nnoremap <silent> \c :set opfunc=OpSysCopyMarkg@
-vmap gx <Plug>NetrwBrowseXVis
-nmap gx <Plug>NetrwBrowseX
-vnoremap <silent> <Plug>NetrwBrowseXVis :call netrw#BrowseXVis()
-nnoremap <silent> <Plug>NetrwBrowseX :call netrw#BrowseX(expand((exists("g:netrw_gx")? g:netrw_gx : '<cfile>')),netrw#CheckIfRemote())
-inoremap <expr> 	 pumvisible() ? "\" : "\	"
-let &cpo=s:cpo_save
-unlet s:cpo_save
-set autoindent
-set backspace=indent,eol,start
-set completefunc=youcompleteme#CompleteFunc
-set completeopt=preview,menuone
-set cpoptions=aAceFsB
-set fileencodings=ucs-bom,utf-8,default,latin1
-set fillchars=vert:|,fold:-,vert:│
-set helplang=en
-set hidden
-set include=import_s.\\zs[^'\"]*\\ze
-set includeexpr=TsIncludeExpr(v:fname)
-set nomodeline
-set path=.,/usr/include,,,./node_modules/**,node_modules/**
-set ruler
-set runtimepath=~/.vim,~/.vim/bundle/JustDo,~/.vim/bundle/YouCompleteMe,~/.vim/bundle/vim-easymotion,~/.vim/bundle/vim-tmux-navigator,~/.vim/bundle/yats.vim,/var/lib/vim/addons,/usr/share/vim/vimfiles,/usr/share/vim/vim74,/usr/share/vim/vimfiles/after,/var/lib/vim/addons/after,~/.vim/after
-set sessionoptions=blank,buffers,folds,help,options,tabpages,winsize,sesdir
-set shortmess=filnxtToOc
-set suffixes=.bak,~,.swp,.o,.info,.aux,.log,.dvi,.bbl,.blg,.brf,.cb,.ind,.idx,.ilg,.inx,.out,.toc
-set suffixesadd=.ts
 let s:so_save = &so | let s:siso_save = &siso | set so=0 siso=0
 let v:this_session=expand("<sfile>:p")
 silent only
+silent tabonly
 exe "cd " . escape(expand("<sfile>:p:h"), ' ')
 if expand('%') == '' && !&modified && line('$') <= 1 && getline(1) == ''
   let s:wipebuf = bufnr('%')
 endif
 set shortmess=aoO
+argglobal
+%argdel
+edit src/imgui_impl.ts
+set splitbelow splitright
+set nosplitbelow
+set nosplitright
+wincmd t
+set winminheight=0
+set winheight=1
+set winminwidth=0
+set winwidth=1
+argglobal
+let s:l = 1 - ((0 * winheight(0) + 21) / 42)
+if s:l < 1 | let s:l = 1 | endif
+exe s:l
+normal! zt
+1
+normal! 0
+tabnext 1
+badd +0 src/imgui_impl.ts
 badd +12 rollup.config.js
 badd +7 imgui-js/rollup.config.js
-badd +7 imgui-js/tsconfig.json
-badd +26 tsconfig.json
+badd +4 imgui-js/tsconfig.json
+badd +12 tsconfig.json
 badd +1 index.js
 badd +3904 imgui-js/imgui.ts
-badd +39 src/main.ts
+badd +80 src/main.ts
 badd +52 imgui-js/example/main.ts
-badd +8 package.json
+badd +34 package.json
 badd +1 imgui-js/dist/imgui.d.ts
 badd +1 imgui-js/bind-imgui.js
 badd +1 imgui-js/example/imgui_impl.js
 badd +2 imgui-js/example/imgui_impl.ts
 badd +295 imgui-js/imgui_demo.ts
 badd +4 index.html
-badd +14 indexdev.html
+badd +4 indexdev.html
 badd +6 imgui-js/example/index.html
-badd +2 imgui-js/example/system.config.js
+badd +6 imgui-js/example/system.config.js
 badd +40 imgui-js/package.json
-badd +201 node_modules/systemjs/dist/system.js
-argglobal
-silent! argdel *
-edit package.json
-set splitbelow splitright
-wincmd _ | wincmd |
-split
-1wincmd k
-wincmd w
-set nosplitbelow
-set nosplitright
-wincmd t
-set winheight=1 winwidth=1
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-argglobal
-enew
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=wipe
-setlocal buflisted
-setlocal buftype=nofile
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=s1:/*,mb:*,ex:*/,://,b:#,:%,:XCOMM,n:>,fb:-
-setlocal commentstring=/*%s*/
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != ''
-setlocal filetype=
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=tcq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=
-setlocal indentkeys=0{,0},:,0#,!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal nomodifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal previewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal noswapfile
-setlocal synmaxcol=3000
-if &syntax != ''
-setlocal syntax=
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal winfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-wincmd w
-argglobal
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=
-setlocal buflisted
-setlocal buftype=
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=
-setlocal commentstring=
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != 'json'
-setlocal filetype=json
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=cq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=GetJSONIndent()
-setlocal indentkeys=0{,0},0),0[,0],!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal modifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal nopreviewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal swapfile
-setlocal synmaxcol=3000
-if &syntax != 'json'
-setlocal syntax=json
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal nowinfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-silent! normal! zE
-let s:l = 23 - ((19 * winheight(0) + 15) / 31)
-if s:l < 1 | let s:l = 1 | endif
-exe s:l
-normal! zt
-23
-normal! 024|
-wincmd w
-2wincmd w
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-tabnext 1
-if exists('s:wipebuf')
+badd +1 node_modules/systemjs/dist/system.js
+badd +1 src/main.js
+badd +1 imgui-js/example/main.js
+if exists('s:wipebuf') && len(win_findbuf(s:wipebuf)) == 0
   silent exe 'bwipe ' . s:wipebuf
 endif
 unlet! s:wipebuf
 set winheight=1 winwidth=20 shortmess=filnxtToOc
+set winminheight=1 winminwidth=1
 let s:sx = expand("<sfile>:p:r")."x.vim"
 if file_readable(s:sx)
   exe "source " . fnameescape(s:sx)
diff --git a/src/imgui_impl.js b/src/imgui_impl.js
new file mode 100644
index 0000000..416e4b2
--- /dev/null
+++ b/src/imgui_impl.js
@@ -0,0 +1,736 @@
+System.register(["imgui-js", "pixi.js", "./utils"], function (exports_1, context_1) {
+    "use strict";
+    var ImGui, PIXI, U, clipboard_text, contexts, contextIOs, isFirstWindow, ImGuiImplInternalRenderer, gl, app, ImGuiWindowLayer, ImGuiWindow, canvas, g_ShaderHandle, g_VertHandle, g_FragHandle, g_AttribLocationTex, g_AttribLocationProjMtx, g_AttribLocationPosition, g_AttribLocationUV, g_AttribLocationColor, g_VaoHandle, g_VboHandle, g_ElementsHandle, g_FontTexture, mouse_button_map;
+    var __moduleName = context_1 && context_1.id;
+    function document_on_copy(event) {
+        if (event.clipboardData) {
+            event.clipboardData.setData("text/plain", clipboard_text);
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function document_on_cut(event) {
+        if (event.clipboardData) {
+            event.clipboardData.setData("text/plain", clipboard_text);
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function document_on_paste(event) {
+        if (event.clipboardData) {
+            clipboard_text = event.clipboardData.getData("text/plain");
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function window_on_gamepadconnected(event /* GamepadEvent */) {
+        console.log("Gamepad connected at index %d: %s. %d buttons, %d axes.", event.gamepad.index, event.gamepad.id, event.gamepad.buttons.length, event.gamepad.axes.length);
+    }
+    function window_on_gamepaddisconnected(event /* GamepadEvent */) {
+        console.log("Gamepad disconnected at index %d: %s.", event.gamepad.index, event.gamepad.id);
+    }
+    function canvas_on_blur(event) {
+        for (var io of contextIOs) {
+            io.KeyCtrl = false;
+            io.KeyShift = false;
+            io.KeyAlt = false;
+            io.KeySuper = false;
+            for (let i = 0; i < io.KeysDown.length; ++i) {
+                io.KeysDown[i] = false;
+            }
+            for (let i = 0; i < io.MouseDown.length; ++i) {
+                io.MouseDown[i] = false;
+            }
+        }
+    }
+    function canvas_on_keydown(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.KeyCtrl = event.ctrlKey;
+            io.KeyShift = event.shiftKey;
+            io.KeyAlt = event.altKey;
+            io.KeySuper = event.metaKey;
+            ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+            io.KeysDown[event.keyCode] = true;
+            // forward to the keypress event
+            if ( /*io.WantCaptureKeyboard ||*/event.key === "Tab") {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_keyup(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.KeyCtrl = event.ctrlKey;
+            io.KeyShift = event.shiftKey;
+            io.KeyAlt = event.altKey;
+            io.KeySuper = event.metaKey;
+            ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+            io.KeysDown[event.keyCode] = false;
+            if (io.WantCaptureKeyboard) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_keypress(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.AddInputCharacter(event.charCode);
+            if (io.WantCaptureKeyboard) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_contextmenu(event) {
+        for (var io of contextIOs) {
+            if (io.WantCaptureMouse) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_wheel(event) {
+        for (var io of contextIOs) {
+            let scale = 1.0;
+            switch (event.deltaMode) {
+                case event.DOM_DELTA_PIXEL:
+                    scale = 0.01;
+                    break;
+                case event.DOM_DELTA_LINE:
+                    scale = 0.2;
+                    break;
+                case event.DOM_DELTA_PAGE:
+                    scale = 1.0;
+                    break;
+            }
+            io.MouseWheelH = event.deltaX * scale;
+            io.MouseWheel = -event.deltaY * scale; // Mouse wheel: 1 unit scrolls about 5 lines text.
+            if (io.WantCaptureMouse) {
+                event.preventDefault();
+            }
+        }
+    }
+    function PrePIXIInit() {
+        PIXI.Renderer.registerPlugin("imgui_renderer", U.fromConstructor(ImGuiImplInternalRenderer));
+    }
+    exports_1("PrePIXIInit", PrePIXIInit);
+    function Init(_app) {
+        // Setup Dear ImGui binding
+        ImGui.IMGUI_CHECKVERSION();
+        if (typeof (document) !== "undefined") {
+            document.body.addEventListener("copy", document_on_copy);
+            document.body.addEventListener("cut", document_on_cut);
+            document.body.addEventListener("paste", document_on_paste);
+        }
+        if (typeof (window) !== "undefined") {
+            window.addEventListener("gamepadconnected", window_on_gamepadconnected);
+            window.addEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+        }
+        app = _app;
+        gl = app.renderer.gl;
+        canvas = app.view;
+        gl.getExtension("EXT_color_buffer_float");
+        if (canvas !== null) {
+            canvas.style.touchAction = "none"; // Disable browser handling of all panning and zooming gestures.
+            canvas.addEventListener("blur", canvas_on_blur);
+            canvas.addEventListener("keydown", canvas_on_keydown);
+            canvas.addEventListener("keyup", canvas_on_keyup);
+            canvas.addEventListener("keypress", canvas_on_keypress);
+            canvas.addEventListener("contextmenu", canvas_on_contextmenu);
+            canvas.addEventListener("wheel", canvas_on_wheel);
+        }
+        CreateDeviceObjects();
+    }
+    exports_1("Init", Init);
+    function Shutdown() {
+        DestroyDeviceObjects();
+        if (canvas !== null) {
+            canvas.removeEventListener("blur", canvas_on_blur);
+            canvas.removeEventListener("keydown", canvas_on_keydown);
+            canvas.removeEventListener("keyup", canvas_on_keyup);
+            canvas.removeEventListener("keypress", canvas_on_keypress);
+            canvas.removeEventListener("contextmenu", canvas_on_contextmenu);
+            canvas.removeEventListener("wheel", canvas_on_wheel);
+        }
+        app = null;
+        canvas = null;
+        if (typeof (window) !== "undefined") {
+            window.removeEventListener("gamepadconnected", window_on_gamepadconnected);
+            window.removeEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+        }
+        if (typeof (document) !== "undefined") {
+            document.body.removeEventListener("copy", document_on_copy);
+            document.body.removeEventListener("cut", document_on_cut);
+            document.body.removeEventListener("paste", document_on_paste);
+        }
+    }
+    exports_1("Shutdown", Shutdown);
+    function CreateFontsTexture() {
+        const io = ImGui.GetIO();
+        // Backup GL state
+        const last_texture = gl && gl.getParameter(gl.TEXTURE_BINDING_2D);
+        // Build texture atlas
+        // const width: number = 256;
+        // const height: number = 256;
+        // const pixels: Uint8Array = new Uint8Array(4 * width * height).fill(0xff);
+        const { width, height, pixels } = io.Fonts.GetTexDataAsRGBA32(); // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+        // console.log(`font texture ${width} x ${height} @ ${pixels.length}`);
+        // Upload texture to graphics system
+        g_FontTexture = gl && gl.createTexture();
+        gl && gl.bindTexture(gl.TEXTURE_2D, g_FontTexture);
+        gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+        gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+        // gl && gl.pixelStorei(gl.UNPACK_ROW_LENGTH); // WebGL2
+        gl && gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+        // Store our identifier
+        io.Fonts.TexID = g_FontTexture || { foo: "bar" };
+        // console.log("font texture id", g_FontTexture);
+        // Restore modified GL state
+        gl && last_texture && gl.bindTexture(gl.TEXTURE_2D, last_texture);
+    }
+    function DestroyFontsTexture() {
+        const io = ImGui.GetIO();
+        io.Fonts.TexID = null;
+        gl && gl.deleteTexture(g_FontTexture);
+        g_FontTexture = null;
+    }
+    function CreateDeviceObjects() {
+        const vertex_shader = [
+            "#version 300 es",
+            "uniform mat4 ProjMtx;",
+            "in vec2 Position;",
+            "in vec2 UV;",
+            "in vec4 Color;",
+            "out vec2 Frag_UV;",
+            "out vec4 Frag_Color;",
+            "void main() {",
+            "	Frag_UV = UV;",
+            "	Frag_Color = Color;",
+            "	gl_Position = ProjMtx * vec4(Position.xy,0,1);",
+            "}",
+        ];
+        const fragment_shader = [
+            "#version 300 es",
+            "precision mediump float;",
+            "uniform sampler2D Texture;",
+            "in vec2 Frag_UV;",
+            "in vec4 Frag_Color;",
+            "out vec4 OutColor;",
+            "void main() {",
+            "	OutColor = Frag_Color * texture(Texture, Frag_UV);",
+            "}",
+        ];
+        g_ShaderHandle = gl && gl.createProgram();
+        g_VertHandle = gl && gl.createShader(gl.VERTEX_SHADER);
+        g_FragHandle = gl && gl.createShader(gl.FRAGMENT_SHADER);
+        gl && gl.shaderSource(g_VertHandle, vertex_shader.join("\n"));
+        gl && gl.shaderSource(g_FragHandle, fragment_shader.join("\n"));
+        gl && gl.compileShader(g_VertHandle);
+        gl && gl.compileShader(g_FragHandle);
+        gl && gl.attachShader(g_ShaderHandle, g_VertHandle);
+        gl && gl.attachShader(g_ShaderHandle, g_FragHandle);
+        gl && gl.linkProgram(g_ShaderHandle);
+        g_AttribLocationTex = gl && gl.getUniformLocation(g_ShaderHandle, "Texture");
+        g_AttribLocationProjMtx = gl && gl.getUniformLocation(g_ShaderHandle, "ProjMtx");
+        g_AttribLocationPosition = gl && gl.getAttribLocation(g_ShaderHandle, "Position") || 0;
+        g_AttribLocationUV = gl && gl.getAttribLocation(g_ShaderHandle, "UV") || 0;
+        g_AttribLocationColor = gl && gl.getAttribLocation(g_ShaderHandle, "Color") || 0;
+        g_VaoHandle = gl && gl.createVertexArray();
+        g_VboHandle = gl && gl.createBuffer();
+        g_ElementsHandle = gl && gl.createBuffer();
+    }
+    function DestroyDeviceObjects() {
+        DestroyFontsTexture();
+        gl && gl.deleteVertexArray(g_VaoHandle);
+        g_VaoHandle = null;
+        gl && gl.deleteBuffer(g_VboHandle);
+        g_VboHandle = null;
+        gl && gl.deleteBuffer(g_ElementsHandle);
+        g_ElementsHandle = null;
+        g_AttribLocationTex = null;
+        g_AttribLocationProjMtx = null;
+        g_AttribLocationPosition = -1;
+        g_AttribLocationUV = -1;
+        g_AttribLocationColor = -1;
+        gl && gl.deleteProgram(g_ShaderHandle);
+        g_ShaderHandle = null;
+        gl && gl.deleteShader(g_VertHandle);
+        g_VertHandle = null;
+        gl && gl.deleteShader(g_FragHandle);
+        g_FragHandle = null;
+    }
+    return {
+        setters: [
+            function (ImGui_1) {
+                ImGui = ImGui_1;
+            },
+            function (PIXI_1) {
+                PIXI = PIXI_1;
+            },
+            function (U_1) {
+                U = U_1;
+            }
+        ],
+        execute: function () {
+            clipboard_text = "";
+            contexts = [];
+            contextIOs = [];
+            isFirstWindow = true;
+            ImGuiImplInternalRenderer = class ImGuiImplInternalRenderer extends PIXI.ObjectRenderer {
+                constructor(r) {
+                    super(r);
+                }
+                render(owner) {
+                    if (!(owner instanceof ImGuiWindowLayer))
+                        return;
+                    const window = owner.window;
+                    const io = window.io;
+                    const draw_data = ImGui.GetDrawData();
+                    if (draw_data === null) {
+                        throw new Error();
+                    }
+                    gl || console.log(draw_data);
+                    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+                    const fb_width = io.DisplaySize.x * io.DisplayFramebufferScale.x;
+                    const fb_height = io.DisplaySize.y * io.DisplayFramebufferScale.y;
+                    if (fb_width === 0 || fb_height === 0) {
+                        return;
+                    }
+                    draw_data.ScaleClipRects(io.DisplayFramebufferScale);
+                    // Backup GL state
+                    const last_program = gl && gl.getParameter(gl.CURRENT_PROGRAM) || null;
+                    const last_active_texture = gl && gl.getParameter(gl.ACTIVE_TEXTURE) || null;
+                    gl && gl.activeTexture(gl.TEXTURE0);
+                    const last_texture0 = gl && gl.getParameter(gl.TEXTURE_BINDING_2D) || null;
+                    const last_vertex_array = gl && gl.getParameter(gl.VERTEX_ARRAY_BINDING) || null;
+                    const last_array_buffer = gl && gl.getParameter(gl.ARRAY_BUFFER_BINDING) || null;
+                    const last_element_array_buffer = gl && gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING) || null;
+                    // GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+                    const last_viewport = gl && gl.getParameter(gl.VIEWPORT) || null;
+                    const last_scissor_box = gl && gl.getParameter(gl.SCISSOR_BOX) || null;
+                    const last_blend_src_rgb = gl && gl.getParameter(gl.BLEND_SRC_RGB) || null;
+                    const last_blend_dst_rgb = gl && gl.getParameter(gl.BLEND_DST_RGB) || null;
+                    const last_blend_src_alpha = gl && gl.getParameter(gl.BLEND_SRC_ALPHA) || null;
+                    const last_blend_dst_alpha = gl && gl.getParameter(gl.BLEND_DST_ALPHA) || null;
+                    const last_blend_equation_rgb = gl && gl.getParameter(gl.BLEND_EQUATION_RGB) || null;
+                    const last_blend_equation_alpha = gl && gl.getParameter(gl.BLEND_EQUATION_ALPHA) || null;
+                    const last_enable_blend = gl && gl.getParameter(gl.BLEND) || null;
+                    const last_enable_cull_face = gl && gl.getParameter(gl.CULL_FACE) || null;
+                    const last_enable_depth_test = gl && gl.getParameter(gl.DEPTH_TEST) || null;
+                    const last_enable_scissor_test = gl && gl.getParameter(gl.SCISSOR_TEST) || null;
+                    gl.clearColor(0, 0, 0, 0);
+                    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+                    gl && gl.bindVertexArray(g_VaoHandle);
+                    // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
+                    gl && gl.enable(gl.BLEND);
+                    gl && gl.blendEquation(gl.FUNC_ADD);
+                    gl && gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE);
+                    gl && gl.disable(gl.CULL_FACE);
+                    gl && gl.disable(gl.DEPTH_TEST);
+                    gl && gl.enable(gl.SCISSOR_TEST);
+                    // glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+                    // Setup viewport, orthographic projection matrix
+                    // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+                    gl && gl.viewport(0, 0, fb_width, fb_height);
+                    const L = draw_data.DisplayPos.x;
+                    const R = draw_data.DisplayPos.x + draw_data.DisplaySize.x;
+                    const T = draw_data.DisplayPos.y;
+                    const B = draw_data.DisplayPos.y + draw_data.DisplaySize.y;
+                    // we actually flip the bottom and top here to match with PIXI's texture usage
+                    const ortho_projection = new Float32Array([
+                        2.0 / (R - L), 0.0, 0.0, 0.0,
+                        0.0, 2.0 / (B - T), 0.0, 0.0,
+                        0.0, 0.0, -1.0, 0.0,
+                        (R + L) / (L - R), (B + T) / (T - B), 0.0, 1.0,
+                    ]);
+                    gl && gl.useProgram(g_ShaderHandle);
+                    gl && gl.uniform1i(g_AttribLocationTex, 0);
+                    gl && g_AttribLocationProjMtx && gl.uniformMatrix4fv(g_AttribLocationProjMtx, false, ortho_projection);
+                    // Render command lists
+                    gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationPosition);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationUV);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationColor);
+                    gl && gl.vertexAttribPointer(g_AttribLocationPosition, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertPosOffset);
+                    gl && gl.vertexAttribPointer(g_AttribLocationUV, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertUVOffset);
+                    gl && gl.vertexAttribPointer(g_AttribLocationColor, 4, gl.UNSIGNED_BYTE, true, ImGui.ImDrawVertSize, ImGui.ImDrawVertColOffset);
+                    // Draw
+                    const pos = draw_data.DisplayPos;
+                    const idx_buffer_type = gl && ((ImGui.ImDrawIdxSize === 4) ? gl.UNSIGNED_INT : gl.UNSIGNED_SHORT) || 0;
+                    draw_data.IterateDrawLists((draw_list) => {
+                        gl || console.log(draw_list);
+                        gl || console.log("VtxBuffer.length", draw_list.VtxBuffer.length);
+                        gl || console.log("IdxBuffer.length", draw_list.IdxBuffer.length);
+                        let idx_buffer_offset = 0;
+                        gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+                        gl && gl.bufferData(gl.ARRAY_BUFFER, draw_list.VtxBuffer, gl.STREAM_DRAW);
+                        gl && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+                        gl && gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, draw_list.IdxBuffer, gl.STREAM_DRAW);
+                        draw_list.IterateDrawCmds((draw_cmd) => {
+                            gl || console.log(draw_cmd);
+                            gl || console.log("ElemCount", draw_cmd.ElemCount);
+                            gl || console.log("ClipRect", draw_cmd.ClipRect.x, draw_cmd.ClipRect.y, draw_cmd.ClipRect.z - draw_cmd.ClipRect.x, draw_cmd.ClipRect.w - draw_cmd.ClipRect.y);
+                            gl || console.log("TextureId", draw_cmd.TextureId);
+                            if (!gl) {
+                                console.log("i: pos.x pos.y uv.x uv.y col");
+                                for (let i = 0; i < Math.min(3, draw_cmd.ElemCount); ++i) {
+                                    const view = new ImGui.ImDrawVert(draw_list.VtxBuffer.buffer, draw_list.VtxBuffer.byteOffset + i * ImGui.ImDrawVertSize);
+                                    console.log(`${i}: ${view.pos[0].toFixed(2)} ${view.pos[1].toFixed(2)} ${view.uv[0].toFixed(5)} ${view.uv[1].toFixed(5)} ${("00000000" + view.col[0].toString(16)).substr(-8)}`);
+                                }
+                            }
+                            if (draw_cmd.UserCallback !== null) {
+                                // User callback (registered via ImDrawList::AddCallback)
+                                draw_cmd.UserCallback(draw_list, draw_cmd);
+                            }
+                            else {
+                                const clip_rect = new ImGui.ImVec4(draw_cmd.ClipRect.x - pos.x, draw_cmd.ClipRect.y - pos.y, draw_cmd.ClipRect.z - pos.x, draw_cmd.ClipRect.w - pos.y);
+                                if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0 && clip_rect.w >= 0.0) {
+                                    // Apply scissor/clipping rectangle
+                                    gl && gl.scissor(clip_rect.x, clip_rect.y, clip_rect.z - clip_rect.x, clip_rect.w - clip_rect.y);
+                                    // Bind texture, Draw
+                                    gl && gl.bindTexture(gl.TEXTURE_2D, draw_cmd.TextureId);
+                                    gl && gl.drawElements(gl.TRIANGLES, draw_cmd.ElemCount, idx_buffer_type, idx_buffer_offset);
+                                }
+                            }
+                            idx_buffer_offset += draw_cmd.ElemCount * ImGui.ImDrawIdxSize;
+                        });
+                    });
+                    // Restore modified GL state
+                    gl && (last_program !== null) && gl.useProgram(last_program);
+                    gl && (last_texture0 !== null) && gl.bindTexture(gl.TEXTURE_2D, last_texture0);
+                    gl && (last_active_texture !== null) && gl.activeTexture(last_active_texture);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationPosition);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationUV);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationColor);
+                    gl && (last_vertex_array !== null) && gl.bindVertexArray(last_vertex_array);
+                    gl && (last_array_buffer !== null) && gl.bindBuffer(gl.ARRAY_BUFFER, last_array_buffer);
+                    gl && (last_element_array_buffer !== null) && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+                    gl && (last_viewport !== null) && gl.viewport(last_viewport[0], last_viewport[1], last_viewport[2], last_viewport[3]);
+                    gl && (last_scissor_box !== null) && gl.scissor(last_scissor_box[0], last_scissor_box[1], last_scissor_box[2], last_scissor_box[3]);
+                    gl && (last_blend_equation_rgb !== null && last_blend_equation_alpha !== null) && gl.blendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+                    gl && (last_blend_src_rgb !== null && last_blend_src_alpha !== null && last_blend_dst_rgb !== null && last_blend_dst_alpha !== null) && gl.blendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
+                    gl && (last_enable_blend ? gl.enable(gl.BLEND) : gl.disable(gl.BLEND));
+                    gl && (last_enable_cull_face ? gl.enable(gl.CULL_FACE) : gl.disable(gl.CULL_FACE));
+                    gl && (last_enable_depth_test ? gl.enable(gl.DEPTH_TEST) : gl.disable(gl.DEPTH_TEST));
+                    gl && (last_enable_scissor_test ? gl.enable(gl.SCISSOR_TEST) : gl.disable(gl.SCISSOR_TEST));
+                    // glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
+                }
+            };
+            gl = null;
+            app = null;
+            ImGuiWindowLayer = class ImGuiWindowLayer extends PIXI.Sprite {
+                constructor(window, tex) {
+                    super();
+                    this.pluginName = "imgui_renderer";
+                    this.window = window;
+                }
+            };
+            ImGuiWindow = class ImGuiWindow extends PIXI.Container {
+                constructor(sizeX, sizeY, update) {
+                    super();
+                    this.baseTex = new PIXI.BaseRenderTexture({ scaleMode: PIXI.SCALE_MODES.LINEAR, resolution: 1, type: PIXI.TYPES.FLOAT, format: PIXI.FORMATS.RGBA });
+                    this.tex = new PIXI.RenderTexture(this.baseTex);
+                    this.surface = new PIXI.Sprite(this.tex);
+                    this.imgui = new ImGuiWindowLayer(this, this.tex);
+                    this.ctx = ImGui.CreateContext(contextIOs.length == 0 ? null : contextIOs[0].Fonts);
+                    ImGui.SetCurrentContext(this.ctx);
+                    this.io = ImGui.GetIO();
+                    contexts.push(this.ctx);
+                    contextIOs.push(this.io);
+                    if (contexts.length == 1) {
+                        CreateFontsTexture();
+                    }
+                    if (typeof (window) !== "undefined") {
+                        ImGui.LoadIniSettingsFromMemory(window.localStorage.getItem("imgui.ini") || "");
+                    }
+                    if (typeof (navigator) !== "undefined") {
+                        this.io.ConfigMacOSXBehaviors = navigator.platform.match(/Mac/) !== null;
+                    }
+                    this.io.SetClipboardTextFn = (user_data, text) => {
+                        clipboard_text = text;
+                        // console.log(`set clipboard_text: "${clipboard_text}"`);
+                        if (typeof navigator !== "undefined" && typeof navigator.clipboard !== "undefined") {
+                            // console.log(`clipboard.writeText: "${clipboard_text}"`);
+                            navigator.clipboard.writeText(clipboard_text).then(() => {
+                                // console.log(`clipboard.writeText: "${clipboard_text}" done.`);
+                            });
+                        }
+                    };
+                    this.io.GetClipboardTextFn = (user_data) => {
+                        // if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+                        //     console.log(`clipboard.readText: "${clipboard_text}"`);
+                        //     (navigator as any).clipboard.readText().then((text: string): void => {
+                        //         clipboard_text = text;
+                        //         console.log(`clipboard.readText: "${clipboard_text}" done.`);
+                        //     });
+                        // }
+                        // console.log(`get clipboard_text: "${clipboard_text}"`);
+                        return clipboard_text;
+                    };
+                    this.io.ClipboardUserData = null;
+                    // Setup back-end capabilities flags
+                    this.io.BackendFlags |= ImGui.BackendFlags.HasMouseCursors; // We can honor GetMouseCursor() values (optional)
+                    // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+                    this.io.KeyMap[ImGui.Key.Tab] = 9;
+                    this.io.KeyMap[ImGui.Key.LeftArrow] = 37;
+                    this.io.KeyMap[ImGui.Key.RightArrow] = 39;
+                    this.io.KeyMap[ImGui.Key.UpArrow] = 38;
+                    this.io.KeyMap[ImGui.Key.DownArrow] = 40;
+                    this.io.KeyMap[ImGui.Key.PageUp] = 33;
+                    this.io.KeyMap[ImGui.Key.PageDown] = 34;
+                    this.io.KeyMap[ImGui.Key.Home] = 36;
+                    this.io.KeyMap[ImGui.Key.End] = 35;
+                    this.io.KeyMap[ImGui.Key.Insert] = 45;
+                    this.io.KeyMap[ImGui.Key.Delete] = 46;
+                    this.io.KeyMap[ImGui.Key.Backspace] = 8;
+                    this.io.KeyMap[ImGui.Key.Space] = 32;
+                    this.io.KeyMap[ImGui.Key.Enter] = 13;
+                    this.io.KeyMap[ImGui.Key.Escape] = 27;
+                    this.io.KeyMap[ImGui.Key.A] = 65;
+                    this.io.KeyMap[ImGui.Key.C] = 67;
+                    this.io.KeyMap[ImGui.Key.V] = 86;
+                    this.io.KeyMap[ImGui.Key.X] = 88;
+                    this.io.KeyMap[ImGui.Key.Y] = 89;
+                    this.io.KeyMap[ImGui.Key.Z] = 90;
+                    this.update = update;
+                    this.resize(sizeX, sizeY);
+                    this.imgui.pluginName = 'imgui_renderer';
+                    this.addChild(this.surface);
+                    app.renderer.plugins.interaction.addListener("mousedown", this.mouseDown.bind(this));
+                    app.renderer.plugins.interaction.addListener("mouseup", this.mouseUp.bind(this));
+                    app.ticker.add(this.updateInternal.bind(this));
+                    this.interactive = false;
+                    this.interactiveChildren = true;
+                    this.surface.interactive = false;
+                }
+                getSizeX() { return this.sizeX; }
+                getSizeY() { return this.sizeY; }
+                withContext(cb) {
+                    ImGui.SetCurrentContext(this.ctx);
+                    cb();
+                }
+                mouseDown(e) {
+                    if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface) {
+                        this.io.MouseDown[mouse_button_map[0]] = true;
+                    }
+                }
+                mouseUp(e) {
+                    if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface) {
+                        this.io.MouseDown[mouse_button_map[0]] = false;
+                    }
+                }
+                resize(sizeX, sizeY) {
+                    this.sizeX = sizeX;
+                    this.sizeY = sizeY;
+                    this.baseTex.resize(sizeX, sizeY);
+                    this.tex.frame = new PIXI.Rectangle(0, 0, this.baseTex.width, this.baseTex.height);
+                }
+                updateInternal(deltaTime) {
+                    const dt = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+                    ImGui.SetCurrentContext(this.ctx);
+                    if (this.io.WantSaveIniSettings) {
+                        this.io.WantSaveIniSettings = false;
+                        if (typeof (window) !== "undefined") {
+                            window.localStorage.setItem("imgui.ini", ImGui.SaveIniSettingsToMemory());
+                        }
+                    }
+                    this.io.DisplaySize.x = this.sizeX;
+                    this.io.DisplaySize.y = this.sizeY;
+                    this.io.DisplayFramebufferScale.x = 1;
+                    this.io.DisplayFramebufferScale.y = 1;
+                    this.io.DeltaTime = dt;
+                    let localPos = this.toLocal(app.renderer.plugins.interaction.mouse.global);
+                    if (localPos.x < 0 || localPos.y < 0 || localPos.x >= this.sizeX || localPos.y >= this.sizeY) {
+                        localPos = new PIXI.Point(-Number.MAX_VALUE, -Number.MAX_VALUE);
+                    }
+                    this.io.MousePos.x = localPos.x;
+                    this.io.MousePos.y = localPos.y;
+                    if (this.io.WantSetMousePos) {
+                        console.log("TODO: MousePos", this.io.MousePos.x, this.io.MousePos.y);
+                    }
+                    if (typeof (document) !== "undefined") {
+                        if (this.io.MouseDrawCursor) {
+                            document.body.style.cursor = "none";
+                        }
+                        else {
+                            switch (ImGui.GetMouseCursor()) {
+                                case ImGui.MouseCursor.None:
+                                    document.body.style.cursor = "none";
+                                    break;
+                                default:
+                                case ImGui.MouseCursor.Arrow:
+                                    document.body.style.cursor = "default";
+                                    break;
+                                case ImGui.MouseCursor.TextInput:
+                                    document.body.style.cursor = "text";
+                                    break; // When hovering over InputText, etc.
+                                case ImGui.MouseCursor.ResizeAll:
+                                    document.body.style.cursor = "move";
+                                    break; // Unused
+                                case ImGui.MouseCursor.ResizeNS:
+                                    document.body.style.cursor = "ns-resize";
+                                    break; // When hovering over an horizontal border
+                                case ImGui.MouseCursor.ResizeEW:
+                                    document.body.style.cursor = "ew-resize";
+                                    break; // When hovering over a vertical border or a column
+                                case ImGui.MouseCursor.ResizeNESW:
+                                    document.body.style.cursor = "nesw-resize";
+                                    break; // When hovering over the bottom-left corner of a window
+                                case ImGui.MouseCursor.ResizeNWSE:
+                                    document.body.style.cursor = "nwse-resize";
+                                    break; // When hovering over the bottom-right corner of a window
+                                case ImGui.MouseCursor.Hand:
+                                    document.body.style.cursor = "move";
+                                    break;
+                            }
+                        }
+                    }
+                    // Gamepad navigation mapping [BETA]
+                    for (let i = 0; i < this.io.NavInputs.length; ++i) {
+                        this.io.NavInputs[i] = 0.0;
+                    }
+                    if (this.io.ConfigFlags & ImGui.ConfigFlags.NavEnableGamepad) {
+                        // Update gamepad inputs
+                        const gamepads = (typeof (navigator) !== "undefined" && typeof (navigator.getGamepads) === "function") ? navigator.getGamepads() : [];
+                        for (let i = 0; i < gamepads.length; ++i) {
+                            const gamepad = gamepads[i];
+                            if (!gamepad) {
+                                continue;
+                            }
+                            const buttons_count = gamepad.buttons.length;
+                            const axes_count = gamepad.axes.length;
+                            const MAP_BUTTON = function (NAV_NO, BUTTON_NO) {
+                                if (!gamepad) {
+                                    return;
+                                }
+                                if (buttons_count > BUTTON_NO && gamepad.buttons[BUTTON_NO].pressed)
+                                    this.io.NavInputs[NAV_NO] = 1.0;
+                            };
+                            const MAP_ANALOG = function (NAV_NO, AXIS_NO, V0, V1) {
+                                if (!gamepad) {
+                                    return;
+                                }
+                                let v = (axes_count > AXIS_NO) ? gamepad.axes[AXIS_NO] : V0;
+                                v = (v - V0) / (V1 - V0);
+                                if (v > 1.0)
+                                    v = 1.0;
+                                if (this.io.NavInputs[NAV_NO] < v)
+                                    this.io.NavInputs[NAV_NO] = v;
+                            };
+                            // TODO: map input based on vendor and product id
+                            // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/id
+                            const match = gamepad.id.match(/^([0-9a-f]{4})-([0-9a-f]{4})-.*$/);
+                            const match_chrome = gamepad.id.match(/^.*\(.*Vendor: ([0-9a-f]{4}) Product: ([0-9a-f]{4})\).*$/);
+                            const vendor = (match && match[1]) || (match_chrome && match_chrome[1]) || "0000";
+                            const product = (match && match[2]) || (match_chrome && match_chrome[2]) || "0000";
+                            switch (vendor + product) {
+                                case "046dc216": // Logitech Logitech Dual Action (Vendor: 046d Product: c216)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 1); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 2); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 0); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_ANALOG(ImGui.NavInput.DpadLeft, 4, -0.3, -0.9); // D-Pad Left
+                                    MAP_ANALOG(ImGui.NavInput.DpadRight, 4, +0.3, +0.9); // D-Pad Right
+                                    MAP_ANALOG(ImGui.NavInput.DpadUp, 5, -0.3, -0.9); // D-Pad Up
+                                    MAP_ANALOG(ImGui.NavInput.DpadDown, 5, +0.3, +0.9); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 6); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 7); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                case "046dc21d": // Logitech Gamepad F310 (STANDARD GAMEPAD Vendor: 046d Product: c21d)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 0); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 1); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 2); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_BUTTON(ImGui.NavInput.DpadLeft, 14); // D-Pad Left
+                                    MAP_BUTTON(ImGui.NavInput.DpadRight, 15); // D-Pad Right
+                                    MAP_BUTTON(ImGui.NavInput.DpadUp, 12); // D-Pad Up
+                                    MAP_BUTTON(ImGui.NavInput.DpadDown, 13); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_ANALOG(ImGui.NavInput.TweakSlow, 6, +0.3, +0.9); // L2 / LT
+                                    MAP_ANALOG(ImGui.NavInput.TweakFast, 7, +0.3, +0.9); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                case "2dc86001": // 8Bitdo SN30 Pro  8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6001)
+                                case "2dc86101": // 8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6101)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 1); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 0); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 4); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_ANALOG(ImGui.NavInput.DpadLeft, 6, -0.3, -0.9); // D-Pad Left
+                                    MAP_ANALOG(ImGui.NavInput.DpadRight, 6, +0.3, +0.9); // D-Pad Right
+                                    MAP_ANALOG(ImGui.NavInput.DpadUp, 7, -0.3, -0.9); // D-Pad Up
+                                    MAP_ANALOG(ImGui.NavInput.DpadDown, 7, +0.3, +0.9); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 6); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 7); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 8); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 9); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                default: // standard gamepad: https://w3c.github.io/gamepad/#remapping
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 0); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 1); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 2); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_BUTTON(ImGui.NavInput.DpadLeft, 14); // D-Pad Left
+                                    MAP_BUTTON(ImGui.NavInput.DpadRight, 15); // D-Pad Right
+                                    MAP_BUTTON(ImGui.NavInput.DpadUp, 12); // D-Pad Up
+                                    MAP_BUTTON(ImGui.NavInput.DpadDown, 13); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 6); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 7); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                            }
+                        }
+                    }
+                    ImGui.NewFrame();
+                    this.update(dt);
+                    ImGui.EndFrame();
+                    ImGui.Render();
+                    app.renderer.render(this.imgui, this.tex);
+                    this.surface.interactive = this.io.WantCaptureMouse;
+                }
+            };
+            exports_1("ImGuiWindow", ImGuiWindow);
+            canvas = null;
+            //export let gl: WebGL2RenderingContext | null = null;
+            g_ShaderHandle = null;
+            g_VertHandle = null;
+            g_FragHandle = null;
+            g_AttribLocationTex = null;
+            g_AttribLocationProjMtx = null;
+            g_AttribLocationPosition = -1;
+            g_AttribLocationUV = -1;
+            g_AttribLocationColor = -1;
+            g_VaoHandle = null;
+            g_VboHandle = null;
+            g_ElementsHandle = null;
+            g_FontTexture = null;
+            // MouseEvent.button
+            // A number representing a given button:
+            // 0: Main button pressed, usually the left button or the un-initialized state
+            // 1: Auxiliary button pressed, usually the wheel button or the middle button (if present)
+            // 2: Secondary button pressed, usually the right button
+            // 3: Fourth button, typically the Browser Back button
+            // 4: Fifth button, typically the Browser Forward button
+            mouse_button_map = [0, 2, 1, 3, 4];
+        }
+    };
+});
+//# sourceMappingURL=imgui_impl.js.map
\ No newline at end of file
diff --git a/src/imgui_impl.js.map b/src/imgui_impl.js.map
new file mode 100644
index 0000000..bcb545f
--- /dev/null
+++ b/src/imgui_impl.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/src/imgui_impl.ts b/src/imgui_impl.ts
new file mode 100644
index 0000000..a5dad20
--- /dev/null
+++ b/src/imgui_impl.ts
@@ -0,0 +1,797 @@
+import * as ImGui from "imgui-js";
+import { ImVec2 } from "imgui-js";
+import * as PIXI from "pixi.js";
+import * as U from "./utils";
+
+let clipboard_text: string = "";
+
+const contexts: ImGui.ImGuiContext[] = [];
+const contextIOs: ImGui.ImGuiIO[] = [];
+let isFirstWindow: boolean = true;
+
+class ImGuiImplInternalRenderer extends PIXI.ObjectRenderer
+{
+    constructor(r: PIXI.Renderer)
+    {
+        super(r);
+    }
+    render(owner: PIXI.DisplayObject): void
+    {
+        if (!(owner instanceof ImGuiWindowLayer)) return;
+
+        const window: ImGuiWindow = (owner as ImGuiWindowLayer).window;
+
+        const io: ImGui.ImGuiIO = window.io;
+        const draw_data: ImGui.ImDrawData = ImGui.GetDrawData();
+        if (draw_data === null) { throw new Error(); }
+
+        gl || console.log(draw_data);
+
+        // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+        const fb_width: number = io.DisplaySize.x * io.DisplayFramebufferScale.x;
+        const fb_height: number = io.DisplaySize.y * io.DisplayFramebufferScale.y;
+        if (fb_width === 0 || fb_height === 0) {
+            return;
+        }
+        draw_data.ScaleClipRects(io.DisplayFramebufferScale);
+
+        // Backup GL state
+        const last_program: WebGLProgram | null = gl && gl.getParameter(gl.CURRENT_PROGRAM) || null;
+        const last_active_texture: GLenum | null = gl && gl.getParameter(gl.ACTIVE_TEXTURE) || null;
+        gl && gl.activeTexture(gl.TEXTURE0);
+        const last_texture0: WebGLTexture | null = gl && gl.getParameter(gl.TEXTURE_BINDING_2D) || null;
+        const last_vertex_array: WebGLVertexArrayObject | null = gl && gl.getParameter(gl.VERTEX_ARRAY_BINDING) || null;
+        const last_array_buffer: WebGLBuffer | null = gl && gl.getParameter(gl.ARRAY_BUFFER_BINDING) || null;
+        const last_element_array_buffer: WebGLBuffer | null = gl && gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING) || null;
+        // GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+        const last_viewport: Int32Array | null = gl && gl.getParameter(gl.VIEWPORT) || null;
+        const last_scissor_box: Int32Array | null = gl && gl.getParameter(gl.SCISSOR_BOX) || null;
+        const last_blend_src_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_SRC_RGB) || null;
+        const last_blend_dst_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_DST_RGB) || null;
+        const last_blend_src_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_SRC_ALPHA) || null;
+        const last_blend_dst_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_DST_ALPHA) || null;
+        const last_blend_equation_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_EQUATION_RGB) || null;
+        const last_blend_equation_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_EQUATION_ALPHA) || null;
+        const last_enable_blend: GLboolean | null = gl && gl.getParameter(gl.BLEND) || null;
+        const last_enable_cull_face: GLboolean | null = gl && gl.getParameter(gl.CULL_FACE) || null;
+        const last_enable_depth_test: GLboolean | null = gl && gl.getParameter(gl.DEPTH_TEST) || null;
+        const last_enable_scissor_test: GLboolean | null = gl && gl.getParameter(gl.SCISSOR_TEST) || null;
+
+        gl.clearColor(0, 0, 0, 0);
+        gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+        
+        gl && gl.bindVertexArray(g_VaoHandle);
+
+        // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
+        gl && gl.enable(gl.BLEND);
+        gl && gl.blendEquation(gl.FUNC_ADD);
+        gl && gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE);
+        gl && gl.disable(gl.CULL_FACE);
+        gl && gl.disable(gl.DEPTH_TEST);
+        gl && gl.enable(gl.SCISSOR_TEST);
+        // glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+
+        // Setup viewport, orthographic projection matrix
+        // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+        gl && gl.viewport(0, 0, fb_width, fb_height);
+        const L: number = draw_data.DisplayPos.x;
+        const R: number = draw_data.DisplayPos.x + draw_data.DisplaySize.x;
+        const T: number = draw_data.DisplayPos.y;
+        const B: number = draw_data.DisplayPos.y + draw_data.DisplaySize.y;
+        // we actually flip the bottom and top here to match with PIXI's texture usage
+        const ortho_projection: Float32Array = new Float32Array([
+            2.0 / (R - L),     0.0,                0.0, 0.0,
+            0.0,               2.0 / (B - T),      0.0, 0.0,
+            0.0,               0.0,               -1.0, 0.0,
+            (R + L) / (L - R), (B + T) / (T - B),  0.0, 1.0,
+        ]);
+        gl && gl.useProgram(g_ShaderHandle);
+        gl && gl.uniform1i(g_AttribLocationTex, 0);
+        gl && g_AttribLocationProjMtx && gl.uniformMatrix4fv(g_AttribLocationProjMtx, false, ortho_projection);
+
+        // Render command lists
+        gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+        gl && gl.enableVertexAttribArray(g_AttribLocationPosition);
+        gl && gl.enableVertexAttribArray(g_AttribLocationUV);
+        gl && gl.enableVertexAttribArray(g_AttribLocationColor);
+
+        gl && gl.vertexAttribPointer(g_AttribLocationPosition, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertPosOffset);
+        gl && gl.vertexAttribPointer(g_AttribLocationUV, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertUVOffset);
+        gl && gl.vertexAttribPointer(g_AttribLocationColor, 4, gl.UNSIGNED_BYTE, true, ImGui.ImDrawVertSize, ImGui.ImDrawVertColOffset);
+
+        // Draw
+        const pos = draw_data.DisplayPos;
+        const idx_buffer_type: GLenum = gl && ((ImGui.ImDrawIdxSize === 4) ? gl.UNSIGNED_INT : gl.UNSIGNED_SHORT) || 0;
+        draw_data.IterateDrawLists((draw_list: ImGui.ImDrawList): void => {
+            gl || console.log(draw_list);
+            gl || console.log("VtxBuffer.length", draw_list.VtxBuffer.length);
+            gl || console.log("IdxBuffer.length", draw_list.IdxBuffer.length);
+            
+            let idx_buffer_offset: number = 0;
+
+            gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+            gl && gl.bufferData(gl.ARRAY_BUFFER, draw_list.VtxBuffer, gl.STREAM_DRAW);
+            gl && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+            gl && gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, draw_list.IdxBuffer, gl.STREAM_DRAW);
+
+            draw_list.IterateDrawCmds((draw_cmd: ImGui.ImDrawCmd): void => {
+                gl || console.log(draw_cmd);
+                gl || console.log("ElemCount", draw_cmd.ElemCount);
+                gl || console.log("ClipRect", draw_cmd.ClipRect.x, draw_cmd.ClipRect.y, draw_cmd.ClipRect.z - draw_cmd.ClipRect.x, draw_cmd.ClipRect.w - draw_cmd.ClipRect.y);
+                gl || console.log("TextureId", draw_cmd.TextureId);
+                if (!gl) {
+                    console.log("i: pos.x pos.y uv.x uv.y col");
+                    for (let i = 0; i < Math.min(3, draw_cmd.ElemCount); ++i) {
+                        const view: ImGui.ImDrawVert = new ImGui.ImDrawVert(draw_list.VtxBuffer.buffer, draw_list.VtxBuffer.byteOffset + i * ImGui.ImDrawVertSize);
+                        console.log(`${i}: ${view.pos[0].toFixed(2)} ${view.pos[1].toFixed(2)} ${view.uv[0].toFixed(5)} ${view.uv[1].toFixed(5)} ${("00000000" + view.col[0].toString(16)).substr(-8)}`);
+                    }
+                }
+
+                if (draw_cmd.UserCallback !== null) {
+                    // User callback (registered via ImDrawList::AddCallback)
+                    draw_cmd.UserCallback(draw_list, draw_cmd);
+                } else {
+                    const clip_rect = new ImGui.ImVec4(draw_cmd.ClipRect.x - pos.x, draw_cmd.ClipRect.y - pos.y, draw_cmd.ClipRect.z - pos.x, draw_cmd.ClipRect.w - pos.y);
+                    if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0 && clip_rect.w >= 0.0) {
+                        // Apply scissor/clipping rectangle
+                        gl && gl.scissor(clip_rect.x, clip_rect.y, clip_rect.z - clip_rect.x, clip_rect.w - clip_rect.y);
+
+                        // Bind texture, Draw
+                        gl && gl.bindTexture(gl.TEXTURE_2D, draw_cmd.TextureId);
+                        gl && gl.drawElements(gl.TRIANGLES, draw_cmd.ElemCount, idx_buffer_type, idx_buffer_offset);
+                    }
+                }
+
+                idx_buffer_offset += draw_cmd.ElemCount * ImGui.ImDrawIdxSize;
+            });
+        });
+
+        // Restore modified GL state
+        
+        gl && (last_program !== null) && gl.useProgram(last_program);
+        gl && (last_texture0 !== null) && gl.bindTexture(gl.TEXTURE_2D, last_texture0);
+        gl && (last_active_texture !== null) && gl.activeTexture(last_active_texture);
+        gl && gl.disableVertexAttribArray(g_AttribLocationPosition);
+        gl && gl.disableVertexAttribArray(g_AttribLocationUV);
+        gl && gl.disableVertexAttribArray(g_AttribLocationColor);
+        gl && (last_vertex_array !== null) && gl.bindVertexArray(last_vertex_array);
+        gl && (last_array_buffer !== null) && gl.bindBuffer(gl.ARRAY_BUFFER, last_array_buffer);
+        gl && (last_element_array_buffer !== null) && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+        gl && (last_viewport !== null) && gl.viewport(last_viewport[0], last_viewport[1], last_viewport[2], last_viewport[3]);
+        gl && (last_scissor_box !== null) && gl.scissor(last_scissor_box[0], last_scissor_box[1], last_scissor_box[2], last_scissor_box[3]);
+        gl && (last_blend_equation_rgb !== null && last_blend_equation_alpha !== null) && gl.blendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+        gl && (last_blend_src_rgb !== null && last_blend_src_alpha !== null && last_blend_dst_rgb !== null && last_blend_dst_alpha !== null) && gl.blendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
+        gl && (last_enable_blend ? gl.enable(gl.BLEND) : gl.disable(gl.BLEND));
+        gl && (last_enable_cull_face ? gl.enable(gl.CULL_FACE) : gl.disable(gl.CULL_FACE));
+        gl && (last_enable_depth_test ? gl.enable(gl.DEPTH_TEST) : gl.disable(gl.DEPTH_TEST));
+        gl && (last_enable_scissor_test ? gl.enable(gl.SCISSOR_TEST) : gl.disable(gl.SCISSOR_TEST));
+        // glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
+    }
+}
+
+let gl: WebGL2RenderingContext = null;
+let app: PIXI.Application = null;
+
+class ImGuiWindowLayer extends PIXI.Sprite
+{
+    public readonly window: ImGuiWindow;
+    constructor(window: ImGuiWindow, tex:PIXI.RenderTexture)
+    {
+        super();
+        this.pluginName = "imgui_renderer";
+        this.window = window;
+    }
+}
+
+export class ImGuiWindow extends PIXI.Container
+{
+    public readonly ctx: ImGui.ImGuiContext;
+    public readonly io: ImGui.ImGuiIO;
+    private sizeX: number;
+    private sizeY: number;
+    public getSizeX(): number { return this.sizeX; }
+    public getSizeY(): number { return this.sizeY; }
+
+    private baseTex: PIXI.BaseRenderTexture = new PIXI.BaseRenderTexture({scaleMode: PIXI.SCALE_MODES.LINEAR, resolution: 1, type: PIXI.TYPES.FLOAT, format: PIXI.FORMATS.RGBA});
+    private tex: PIXI.RenderTexture = new PIXI.RenderTexture(this.baseTex);
+    
+    private surface: PIXI.Sprite = new PIXI.Sprite(this.tex);
+    private imgui: ImGuiWindowLayer = new ImGuiWindowLayer(this, this.tex);
+    
+    private update: (dt: number) => void;
+    constructor(sizeX: number, sizeY: number, update: (dt: number) => void)
+    {
+        super();
+
+        this.ctx = ImGui.CreateContext(contextIOs.length == 0 ? null : contextIOs[0].Fonts);
+        ImGui.SetCurrentContext(this.ctx);
+        this.io = ImGui.GetIO();
+
+        contexts.push(this.ctx);
+        contextIOs.push(this.io);
+
+        if (contexts.length == 1)
+        {
+            CreateFontsTexture();
+        }
+
+        if (typeof(window) !== "undefined") {
+            ImGui.LoadIniSettingsFromMemory(window.localStorage.getItem("imgui.ini") || "");
+        }
+
+        if (typeof(navigator) !== "undefined") {
+            this.io.ConfigMacOSXBehaviors = navigator.platform.match(/Mac/) !== null;
+        }
+
+        this.io.SetClipboardTextFn = (user_data: any, text: string): void => {
+            clipboard_text = text;
+            // console.log(`set clipboard_text: "${clipboard_text}"`);
+            if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+                // console.log(`clipboard.writeText: "${clipboard_text}"`);
+                (navigator as any).clipboard.writeText(clipboard_text).then((): void => {
+                    // console.log(`clipboard.writeText: "${clipboard_text}" done.`);
+                });
+            }
+        };
+        this.io.GetClipboardTextFn = (user_data: any): string => {
+            // if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+            //     console.log(`clipboard.readText: "${clipboard_text}"`);
+            //     (navigator as any).clipboard.readText().then((text: string): void => {
+            //         clipboard_text = text;
+            //         console.log(`clipboard.readText: "${clipboard_text}" done.`);
+            //     });
+            // }
+            // console.log(`get clipboard_text: "${clipboard_text}"`);
+            return clipboard_text;
+        };
+        this.io.ClipboardUserData = null;
+
+        // Setup back-end capabilities flags
+        this.io.BackendFlags |= ImGui.BackendFlags.HasMouseCursors;   // We can honor GetMouseCursor() values (optional)
+
+        // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+        this.io.KeyMap[ImGui.Key.Tab] = 9;
+        this.io.KeyMap[ImGui.Key.LeftArrow] = 37;
+        this.io.KeyMap[ImGui.Key.RightArrow] = 39;
+        this.io.KeyMap[ImGui.Key.UpArrow] = 38;
+        this.io.KeyMap[ImGui.Key.DownArrow] = 40;
+        this.io.KeyMap[ImGui.Key.PageUp] = 33;
+        this.io.KeyMap[ImGui.Key.PageDown] = 34;
+        this.io.KeyMap[ImGui.Key.Home] = 36;
+        this.io.KeyMap[ImGui.Key.End] = 35;
+        this.io.KeyMap[ImGui.Key.Insert] = 45;
+        this.io.KeyMap[ImGui.Key.Delete] = 46;
+        this.io.KeyMap[ImGui.Key.Backspace] = 8;
+        this.io.KeyMap[ImGui.Key.Space] = 32;
+        this.io.KeyMap[ImGui.Key.Enter] = 13;
+        this.io.KeyMap[ImGui.Key.Escape] = 27;
+        this.io.KeyMap[ImGui.Key.A] = 65;
+        this.io.KeyMap[ImGui.Key.C] = 67;
+        this.io.KeyMap[ImGui.Key.V] = 86;
+        this.io.KeyMap[ImGui.Key.X] = 88;
+        this.io.KeyMap[ImGui.Key.Y] = 89;
+        this.io.KeyMap[ImGui.Key.Z] = 90;
+
+        this.update = update;
+        this.resize(sizeX, sizeY);
+        this.imgui.pluginName = 'imgui_renderer';
+        this.addChild(this.surface);
+        app.renderer.plugins.interaction.addListener("mousedown", this.mouseDown.bind(this));
+        app.renderer.plugins.interaction.addListener("mouseup", this.mouseUp.bind(this));
+        app.ticker.add(this.updateInternal.bind(this));
+
+        this.interactive = false;
+        this.interactiveChildren = true;
+
+        this.surface.interactive = false;
+    }
+    withContext(cb: () => void)
+    {
+        ImGui.SetCurrentContext(this.ctx);
+        cb();
+    }
+    mouseDown(e: PIXI.interaction.InteractionEvent): void
+    {
+        if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface)
+        {
+            this.io.MouseDown[mouse_button_map[0]] = true;
+        }
+    }
+    mouseUp(e: PIXI.interaction.InteractionEvent): void
+    {
+        if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface)
+        {
+            this.io.MouseDown[mouse_button_map[0]] = false;
+        }
+    }
+    resize(sizeX: number, sizeY: number)
+    {
+        this.sizeX = sizeX;
+        this.sizeY = sizeY;
+        this.baseTex.resize(sizeX, sizeY);
+        this.tex.frame = new PIXI.Rectangle(0, 0, this.baseTex.width, this.baseTex.height);
+    }
+    updateInternal(deltaTime: number)
+    {
+        const dt: number = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+
+        ImGui.SetCurrentContext(this.ctx);
+
+        if (this.io.WantSaveIniSettings) {
+            this.io.WantSaveIniSettings = false;
+            if (typeof(window) !== "undefined") {
+                window.localStorage.setItem("imgui.ini", ImGui.SaveIniSettingsToMemory());
+            }
+        }
+
+        this.io.DisplaySize.x = this.sizeX;
+        this.io.DisplaySize.y = this.sizeY;
+        this.io.DisplayFramebufferScale.x = 1;
+        this.io.DisplayFramebufferScale.y = 1;
+
+        this.io.DeltaTime = dt;
+
+        let localPos: PIXI.Point = this.toLocal(app.renderer.plugins.interaction.mouse.global);
+        if (localPos.x < 0 || localPos.y < 0 || localPos.x >= this.sizeX || localPos.y >= this.sizeY)
+        {
+            localPos = new PIXI.Point(-Number.MAX_VALUE, -Number.MAX_VALUE);
+        }
+        this.io.MousePos.x = localPos.x;
+        this.io.MousePos.y = localPos.y;
+
+        if (this.io.WantSetMousePos) {
+            console.log("TODO: MousePos", this.io.MousePos.x, this.io.MousePos.y);
+        }
+
+        if (typeof(document) !== "undefined") {
+            if (this.io.MouseDrawCursor) {
+                document.body.style.cursor = "none";
+            } else {
+                switch (ImGui.GetMouseCursor()) {
+                    case ImGui.MouseCursor.None: document.body.style.cursor = "none"; break;
+                    default: case ImGui.MouseCursor.Arrow: document.body.style.cursor = "default"; break;
+                    case ImGui.MouseCursor.TextInput: document.body.style.cursor = "text"; break;         // When hovering over InputText, etc.
+                    case ImGui.MouseCursor.ResizeAll: document.body.style.cursor = "move"; break;         // Unused
+                    case ImGui.MouseCursor.ResizeNS: document.body.style.cursor = "ns-resize"; break;     // When hovering over an horizontal border
+                    case ImGui.MouseCursor.ResizeEW: document.body.style.cursor = "ew-resize"; break;     // When hovering over a vertical border or a column
+                    case ImGui.MouseCursor.ResizeNESW: document.body.style.cursor = "nesw-resize"; break; // When hovering over the bottom-left corner of a window
+                    case ImGui.MouseCursor.ResizeNWSE: document.body.style.cursor = "nwse-resize"; break; // When hovering over the bottom-right corner of a window
+                    case ImGui.MouseCursor.Hand: document.body.style.cursor = "move"; break;
+                }
+            }
+        }
+
+        // Gamepad navigation mapping [BETA]
+        for (let i = 0; i < this.io.NavInputs.length; ++i) {
+            this.io.NavInputs[i] = 0.0;
+        }
+        if (this.io.ConfigFlags & ImGui.ConfigFlags.NavEnableGamepad) {
+            // Update gamepad inputs
+            const gamepads: (Gamepad | null)[] = (typeof(navigator) !== "undefined" && typeof(navigator.getGamepads) === "function") ? navigator.getGamepads() : [];
+            for (let i = 0; i < gamepads.length; ++i) {
+                const gamepad: Gamepad | null = gamepads[i];
+                if (!gamepad) { continue; }
+                const buttons_count: number = gamepad.buttons.length;
+                const axes_count: number = gamepad.axes.length;
+                const MAP_BUTTON = function(NAV_NO: number, BUTTON_NO: number): void {
+                    if (!gamepad) { return; }
+                    if (buttons_count > BUTTON_NO && gamepad.buttons[BUTTON_NO].pressed)
+                        this.io.NavInputs[NAV_NO] = 1.0;
+                }
+                const MAP_ANALOG = function(NAV_NO: number, AXIS_NO: number, V0: number, V1: number): void {
+                    if (!gamepad) { return; }
+                    let v: number = (axes_count > AXIS_NO) ? gamepad.axes[AXIS_NO] : V0;
+                    v = (v - V0) / (V1 - V0);
+                    if (v > 1.0) v = 1.0;
+                    if (this.io.NavInputs[NAV_NO] < v) this.io.NavInputs[NAV_NO] = v;
+                }
+                // TODO: map input based on vendor and product id
+                // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/id
+                const match: RegExpMatchArray | null = gamepad.id.match(/^([0-9a-f]{4})-([0-9a-f]{4})-.*$/);
+                const match_chrome: RegExpMatchArray | null = gamepad.id.match(/^.*\(.*Vendor: ([0-9a-f]{4}) Product: ([0-9a-f]{4})\).*$/);
+                const vendor: string = (match && match[1]) || (match_chrome && match_chrome[1]) || "0000";
+                const product: string = (match && match[2]) || (match_chrome && match_chrome[2]) || "0000";
+                switch (vendor + product) {
+                    case "046dc216": // Logitech Logitech Dual Action (Vendor: 046d Product: c216)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    1); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      2); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        0); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_ANALOG(ImGui.NavInput.DpadLeft,    4, -0.3, -0.9); // D-Pad Left
+                    MAP_ANALOG(ImGui.NavInput.DpadRight,   4, +0.3, +0.9); // D-Pad Right
+                    MAP_ANALOG(ImGui.NavInput.DpadUp,      5, -0.3, -0.9); // D-Pad Up
+                    MAP_ANALOG(ImGui.NavInput.DpadDown,    5, +0.3, +0.9); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   6); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   7); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    case "046dc21d": // Logitech Gamepad F310 (STANDARD GAMEPAD Vendor: 046d Product: c21d)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    0); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      1); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        2); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_BUTTON(ImGui.NavInput.DpadLeft,    14); // D-Pad Left
+                    MAP_BUTTON(ImGui.NavInput.DpadRight,   15); // D-Pad Right
+                    MAP_BUTTON(ImGui.NavInput.DpadUp,      12); // D-Pad Up
+                    MAP_BUTTON(ImGui.NavInput.DpadDown,    13); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_ANALOG(ImGui.NavInput.TweakSlow,   6, +0.3, +0.9); // L2 / LT
+                    MAP_ANALOG(ImGui.NavInput.TweakFast,   7, +0.3, +0.9); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    case "2dc86001": // 8Bitdo SN30 Pro  8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6001)
+                    case "2dc86101": // 8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6101)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    1); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      0); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        4); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_ANALOG(ImGui.NavInput.DpadLeft,    6, -0.3, -0.9); // D-Pad Left
+                    MAP_ANALOG(ImGui.NavInput.DpadRight,   6, +0.3, +0.9); // D-Pad Right
+                    MAP_ANALOG(ImGui.NavInput.DpadUp,      7, -0.3, -0.9); // D-Pad Up
+                    MAP_ANALOG(ImGui.NavInput.DpadDown,    7, +0.3, +0.9); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   6); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   7); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   8); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   9); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    default: // standard gamepad: https://w3c.github.io/gamepad/#remapping
+                    MAP_BUTTON(ImGui.NavInput.Activate,    0); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      1); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        2); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_BUTTON(ImGui.NavInput.DpadLeft,    14); // D-Pad Left
+                    MAP_BUTTON(ImGui.NavInput.DpadRight,   15); // D-Pad Right
+                    MAP_BUTTON(ImGui.NavInput.DpadUp,      12); // D-Pad Up
+                    MAP_BUTTON(ImGui.NavInput.DpadDown,    13); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   6); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   7); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                }
+            }
+        }
+
+        ImGui.NewFrame();
+
+        this.update(dt);
+
+        ImGui.EndFrame();
+        ImGui.Render();
+
+        app.renderer.render(this.imgui, this.tex);
+
+        this.surface.interactive = this.io.WantCaptureMouse;
+    }
+}
+
+let canvas: HTMLCanvasElement | null = null;
+
+//export let gl: WebGL2RenderingContext | null = null;
+let g_ShaderHandle: WebGLProgram | null = null;
+let g_VertHandle: WebGLShader | null = null;
+let g_FragHandle: WebGLShader | null = null;
+let g_AttribLocationTex: WebGLUniformLocation | null = null;
+let g_AttribLocationProjMtx: WebGLUniformLocation | null = null;
+let g_AttribLocationPosition: GLint = -1;
+let g_AttribLocationUV: GLint = -1;
+let g_AttribLocationColor: GLint = -1;
+let g_VaoHandle: WebGLVertexArrayObject = null;
+let g_VboHandle: WebGLBuffer | null = null;
+let g_ElementsHandle: WebGLBuffer | null = null;
+let g_FontTexture: WebGLTexture | null = null;
+
+function document_on_copy(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        event.clipboardData.setData("text/plain", clipboard_text);
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function document_on_cut(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        event.clipboardData.setData("text/plain", clipboard_text);
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function document_on_paste(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        clipboard_text = event.clipboardData.getData("text/plain");
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function window_on_gamepadconnected(event: any /* GamepadEvent */): void {
+    console.log("Gamepad connected at index %d: %s. %d buttons, %d axes.",
+    event.gamepad.index, event.gamepad.id,
+    event.gamepad.buttons.length, event.gamepad.axes.length);
+}
+
+function window_on_gamepaddisconnected(event: any /* GamepadEvent */): void {
+    console.log("Gamepad disconnected at index %d: %s.",
+    event.gamepad.index, event.gamepad.id);
+}
+
+function canvas_on_blur(event: FocusEvent): void {
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = false;
+        io.KeyShift = false;
+        io.KeyAlt = false;
+        io.KeySuper = false;
+        for (let i = 0; i < io.KeysDown.length; ++i) {
+            io.KeysDown[i] = false;
+        }
+        for (let i = 0; i < io.MouseDown.length; ++i) {
+            io.MouseDown[i] = false;
+        }
+    }
+}
+
+function canvas_on_keydown(event: KeyboardEvent): void {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = event.ctrlKey;
+        io.KeyShift = event.shiftKey;
+        io.KeyAlt = event.altKey;
+        io.KeySuper = event.metaKey;
+        ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+        io.KeysDown[event.keyCode] = true;
+        // forward to the keypress event
+        if (/*io.WantCaptureKeyboard ||*/ event.key === "Tab") {
+            event.preventDefault();
+        }
+    }
+}
+
+function canvas_on_keyup(event: KeyboardEvent): void  {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = event.ctrlKey;
+        io.KeyShift = event.shiftKey;
+        io.KeyAlt = event.altKey;
+        io.KeySuper = event.metaKey;
+        ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+        io.KeysDown[event.keyCode] = false;
+        if (io.WantCaptureKeyboard) {
+            event.preventDefault();
+        }
+    }
+}
+
+function canvas_on_keypress(event: KeyboardEvent): void  {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.AddInputCharacter(event.charCode);
+        if (io.WantCaptureKeyboard) {
+            event.preventDefault();
+        }
+    }
+}
+
+// MouseEvent.button
+// A number representing a given button:
+// 0: Main button pressed, usually the left button or the un-initialized state
+// 1: Auxiliary button pressed, usually the wheel button or the middle button (if present)
+// 2: Secondary button pressed, usually the right button
+// 3: Fourth button, typically the Browser Back button
+// 4: Fifth button, typically the Browser Forward button
+const mouse_button_map: number[] = [ 0, 2, 1, 3, 4 ];
+
+function canvas_on_contextmenu(event: Event): void  {
+    for (var io of contextIOs)
+    {
+        if (io.WantCaptureMouse) { event.preventDefault(); }
+    }
+}
+
+function canvas_on_wheel(event: WheelEvent): void  {
+    for (var io of contextIOs)
+    {
+        let scale: number = 1.0;
+        switch (event.deltaMode) {
+            case event.DOM_DELTA_PIXEL: scale = 0.01; break;
+            case event.DOM_DELTA_LINE: scale = 0.2; break;
+            case event.DOM_DELTA_PAGE: scale = 1.0; break;
+        }
+        io.MouseWheelH = event.deltaX * scale;
+        io.MouseWheel = -event.deltaY * scale; // Mouse wheel: 1 unit scrolls about 5 lines text.
+        if (io.WantCaptureMouse) {
+            event.preventDefault();
+        }
+    }
+}
+
+export function PrePIXIInit(): void
+{
+    PIXI.Renderer.registerPlugin("imgui_renderer", U.fromConstructor(ImGuiImplInternalRenderer));
+}
+
+export function Init(_app: PIXI.Application): void {
+    // Setup Dear ImGui binding
+    ImGui.IMGUI_CHECKVERSION();
+
+    if (typeof(document) !== "undefined") {
+        document.body.addEventListener("copy", document_on_copy);
+        document.body.addEventListener("cut", document_on_cut);
+        document.body.addEventListener("paste", document_on_paste);
+    }
+
+    if (typeof(window) !== "undefined") {
+        window.addEventListener("gamepadconnected", window_on_gamepadconnected);
+        window.addEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+    }
+
+    app = _app;
+    gl = (app.renderer as any).gl;
+    canvas = app.view;
+
+    gl.getExtension("EXT_color_buffer_float");
+
+    if (canvas !== null) {
+        canvas.style.touchAction = "none"; // Disable browser handling of all panning and zooming gestures.
+        canvas.addEventListener("blur", canvas_on_blur);
+        canvas.addEventListener("keydown", canvas_on_keydown);
+        canvas.addEventListener("keyup", canvas_on_keyup);
+        canvas.addEventListener("keypress", canvas_on_keypress);
+        canvas.addEventListener("contextmenu", canvas_on_contextmenu);
+        canvas.addEventListener("wheel", canvas_on_wheel);
+    }
+
+    CreateDeviceObjects();
+}
+
+export function Shutdown(): void {
+    DestroyDeviceObjects();
+
+    if (canvas !== null) {
+        canvas.removeEventListener("blur", canvas_on_blur);
+        canvas.removeEventListener("keydown", canvas_on_keydown);
+        canvas.removeEventListener("keyup", canvas_on_keyup);
+        canvas.removeEventListener("keypress", canvas_on_keypress);
+        canvas.removeEventListener("contextmenu", canvas_on_contextmenu);
+        canvas.removeEventListener("wheel", canvas_on_wheel);
+    }
+
+    app = null;
+    canvas = null;
+
+    if (typeof(window) !== "undefined") {
+        window.removeEventListener("gamepadconnected", window_on_gamepadconnected);
+        window.removeEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+    }
+
+    if (typeof(document) !== "undefined") {
+        document.body.removeEventListener("copy", document_on_copy);
+        document.body.removeEventListener("cut", document_on_cut);
+        document.body.removeEventListener("paste", document_on_paste);
+    }
+}
+
+function CreateFontsTexture(): void {
+    const io = ImGui.GetIO();
+
+    // Backup GL state
+    const last_texture: WebGLTexture | null = gl && gl.getParameter(gl.TEXTURE_BINDING_2D);
+
+    // Build texture atlas
+    // const width: number = 256;
+    // const height: number = 256;
+    // const pixels: Uint8Array = new Uint8Array(4 * width * height).fill(0xff);
+    const { width, height, pixels } = io.Fonts.GetTexDataAsRGBA32();   // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+    // console.log(`font texture ${width} x ${height} @ ${pixels.length}`);
+
+    // Upload texture to graphics system
+    g_FontTexture = gl && gl.createTexture();
+    gl && gl.bindTexture(gl.TEXTURE_2D, g_FontTexture);
+    gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+    gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+    // gl && gl.pixelStorei(gl.UNPACK_ROW_LENGTH); // WebGL2
+    gl && gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+
+    // Store our identifier
+    io.Fonts.TexID = g_FontTexture || { foo: "bar" };
+    // console.log("font texture id", g_FontTexture);
+
+    // Restore modified GL state
+    gl && last_texture && gl.bindTexture(gl.TEXTURE_2D, last_texture);
+}
+
+function DestroyFontsTexture(): void {
+    const io = ImGui.GetIO();
+    io.Fonts.TexID = null;
+    gl && gl.deleteTexture(g_FontTexture); g_FontTexture = null;
+}
+
+function CreateDeviceObjects(): void {
+    const vertex_shader: string[] = [
+        "#version 300 es",
+        "uniform mat4 ProjMtx;",
+        "in vec2 Position;",
+        "in vec2 UV;",
+        "in vec4 Color;",
+        "out vec2 Frag_UV;",
+        "out vec4 Frag_Color;",
+        "void main() {",
+        "	Frag_UV = UV;",
+        "	Frag_Color = Color;",
+        "	gl_Position = ProjMtx * vec4(Position.xy,0,1);",
+        "}",
+    ];
+
+    const fragment_shader: string[] = [
+        "#version 300 es",
+        "precision mediump float;", // WebGL requires precision specifiers
+        "uniform sampler2D Texture;",
+        "in vec2 Frag_UV;",
+        "in vec4 Frag_Color;",
+        "out vec4 OutColor;",
+        "void main() {",
+        "	OutColor = Frag_Color * texture(Texture, Frag_UV);",
+        "}",
+    ];
+
+    g_ShaderHandle = gl && gl.createProgram();
+    g_VertHandle = gl && gl.createShader(gl.VERTEX_SHADER);
+    g_FragHandle = gl && gl.createShader(gl.FRAGMENT_SHADER);
+    gl && gl.shaderSource(g_VertHandle as WebGLShader, vertex_shader.join("\n"));
+    gl && gl.shaderSource(g_FragHandle as WebGLShader, fragment_shader.join("\n"));
+    gl && gl.compileShader(g_VertHandle as WebGLShader);
+    gl && gl.compileShader(g_FragHandle as WebGLShader);
+    gl && gl.attachShader(g_ShaderHandle as WebGLProgram, g_VertHandle as WebGLShader);
+    gl && gl.attachShader(g_ShaderHandle as WebGLProgram, g_FragHandle as WebGLShader);
+    gl && gl.linkProgram(g_ShaderHandle as WebGLProgram);
+
+    g_AttribLocationTex = gl && gl.getUniformLocation(g_ShaderHandle as WebGLProgram, "Texture");
+    g_AttribLocationProjMtx = gl && gl.getUniformLocation(g_ShaderHandle as WebGLProgram, "ProjMtx");
+    g_AttribLocationPosition = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "Position") || 0;
+    g_AttribLocationUV = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "UV") || 0;
+    g_AttribLocationColor = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "Color") || 0;
+
+    g_VaoHandle = gl && gl.createVertexArray();
+    g_VboHandle = gl && gl.createBuffer();
+    g_ElementsHandle = gl && gl.createBuffer();
+
+}
+
+function DestroyDeviceObjects(): void {
+    DestroyFontsTexture();
+
+    gl && gl.deleteVertexArray(g_VaoHandle); g_VaoHandle = null;
+    gl && gl.deleteBuffer(g_VboHandle); g_VboHandle = null;
+    gl && gl.deleteBuffer(g_ElementsHandle); g_ElementsHandle = null;
+
+    g_AttribLocationTex = null;
+    g_AttribLocationProjMtx = null;
+    g_AttribLocationPosition = -1;
+    g_AttribLocationUV = -1;
+    g_AttribLocationColor = -1;
+
+    gl && gl.deleteProgram(g_ShaderHandle); g_ShaderHandle = null;
+    gl && gl.deleteShader(g_VertHandle); g_VertHandle = null;
+    gl && gl.deleteShader(g_FragHandle); g_FragHandle = null;
+}

diff --git a/.gitmodules b/.gitmodules
index d6b45d7..fc2be7a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,7 @@
 [submodule "emsdk"]
 	path = emsdk
 	url = https://github.com/emscripten-core/emsdk.git
+	ignore = untracked
+[submodule "pixi.js"]
+	path = pixi.js
+	url = https://git.mhack.io/git/mark/pixi.js.git
diff --git a/imgui-js b/imgui-js
index 9f694ef..9536eca 160000
--- a/imgui-js
+++ b/imgui-js
@@ -1 +1 @@
-Subproject commit 9f694ef7e8e7251c32f7811ba39938951a12097a
+Subproject commit 9536ecad287eb76812087cd3fee1aaacb448c027
diff --git a/indexdev.html b/indexdev.html
index 2f6c3b3..3d27479 100644
--- a/indexdev.html
+++ b/indexdev.html
@@ -2,22 +2,16 @@
     <head>
         <title>7GUI</title>
         <script src="node_modules/systemjs/dist/system.js"></script>
-        <!--
-        <script type="systemjs-importmap">
-            {
-                "imports": {
-                    "imgui-js/example/imgui_impl": "imgui-js/dist/imgui_impl.umd.js"
-                }
-            }
-        </script>
-        -->
         <script>
             System.config({
                 map: {
-                    "imgui-js": "./imgui-js"
+                    "imgui-js": "./imgui-js",
+                    "pixi.js": "./node_modules/pixi.js"
                 },
                 packages: {
-                    "imgui-js": { main: "imgui.js", }
+                    "imgui-js": { main: "imgui.js" },
+                    "pixi.js": { main: "dist/pixi.js" },
+                    "./": { map: { "src/utils": "./src/utils.js", "src/imgui_impl": "./src/imgui_impl.js" } }
                 }
             });
             System.import("./src/main.js");
diff --git a/package-lock.json b/package-lock.json
index ed52494..8bda7e5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,16 +4,34 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@pixi/constants": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/constants/-/constants-5.1.0.tgz",
+      "integrity": "sha512-86cogDvjF9yNvmxeizwkIhA0Kl2z3gUSWMf2daYx903dzyje7fwkzRrKLnqDUn6vSAxRXiska0DMJhwYsIC29w=="
+    },
+    "@pixi/math": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/math/-/math-5.1.0.tgz",
+      "integrity": "sha512-Vf9W4SgYRRQMdSq8tFViKKKGCU3iklf0RDzd+wzp4gezOxe3m0PLB7XKwvVrP1hRjUh49zIAL9JBpYREPS1EMw=="
+    },
+    "@pixi/polyfill": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/polyfill/-/polyfill-5.1.0.tgz",
+      "integrity": "sha512-8M3nYCO0a599fsdLW7wv9SBYriMqS1QckKAkRuN2JualRuK/GjxZjm5Vcbcwc1gGONRUKZroH12CuPyTcU2HnQ==",
+      "requires": {
+        "es6-promise-polyfill": "^1.2.0",
+        "object-assign": "^4.1.1"
+      }
+    },
     "@types/estree": {
       "version": "0.0.39",
       "resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.39.tgz",
       "integrity": "sha512-EYNwp3bU+98cpU4lAWYYL7Zz+2gryWH1qbdDTidVd6hkiR6weksdbMadyXKXNPEkQFhXM+hVO9ZygomHXp+AIw=="
     },
     "@types/node": {
-      "version": "12.0.7",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.0.7.tgz",
-      "integrity": "sha512-1YKeT4JitGgE4SOzyB9eMwO0nGVNkNEsm9qlIt1Lqm/tG2QEiSMTD4kS3aO6L+w5SClLVxALmIBESK6Mk5wX0A==",
-      "dev": true
+      "version": "12.6.8",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.6.8.tgz",
+      "integrity": "sha512-aX+gFgA5GHcDi89KG5keey2zf0WfZk/HAQotEamsK2kbey+8yGKcson0hbK8E+v0NArlCJQCqMP161YhV6ZXLg=="
     },
     "@types/resolve": {
       "version": "0.0.8",
@@ -27,7 +45,13 @@
     "@types/systemjs": {
       "version": "0.20.6",
       "resolved": "https://registry.npmjs.org/@types/systemjs/-/systemjs-0.20.6.tgz",
-      "integrity": "sha512-p3yv9sBBJXi3noUG216BpUI7VtVBUAvBIfZNTiDROUY31YBfsFHM4DreS7XMekN8IjtX0ysvCnm6r3WnirnNeA=="
+      "integrity": "sha512-p3yv9sBBJXi3noUG216BpUI7VtVBUAvBIfZNTiDROUY31YBfsFHM4DreS7XMekN8IjtX0ysvCnm6r3WnirnNeA==",
+      "dev": true
+    },
+    "@types/webgl2": {
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/@types/webgl2/-/webgl2-0.0.5.tgz",
+      "integrity": "sha512-oGaKsBbxQOY5+aJFV3KECDhGaXt+yZJt2y/OZsnQGLRkH6Fvr7rv4pCt3SRH1somIHfej/c4u7NSpCyd9x+1Ow=="
     },
     "abstract-leveldown": {
       "version": "0.12.4",
@@ -57,9 +81,9 @@
       }
     },
     "acorn": {
-      "version": "6.1.1",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.1.1.tgz",
-      "integrity": "sha512-jPTiwtOxaHNaAPg/dmrJ/beuzLRnXtB0kQPQ8JpotKJgTB6rX6c8mlf315941pyjBSaPg8NHXS9fhP4u17DpGA=="
+      "version": "6.2.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.2.0.tgz",
+      "integrity": "sha512-8oe72N3WPMjA+2zVG71Ia0nXZ8DpQH+QyyHO+p06jT8eg8FGG3FbcUIi8KziHlAfheJQZeoqbvq1mQSQHXKYLw=="
     },
     "anymatch": {
       "version": "2.0.0",
@@ -258,6 +282,12 @@
             "isarray": "0.0.1",
             "string_decoder": "~0.10.x"
           }
+        },
+        "string_decoder": {
+          "version": "0.10.31",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
+          "dev": true
         }
       }
     },
@@ -485,12 +515,6 @@
         "object-visit": "^1.0.0"
       }
     },
-    "colors": {
-      "version": "1.3.3",
-      "resolved": "https://registry.npmjs.org/colors/-/colors-1.3.3.tgz",
-      "integrity": "sha512-mmGt/1pZqYRjMxB1axhTo16/snVZ5krrKkcmMeVKxzECMMXoCgnvTPp10QgHfcbQZw8Dq2jMNG6je4JlWU0gWg==",
-      "dev": true
-    },
     "component-emitter": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.3.0.tgz",
@@ -533,16 +557,6 @@
       "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
       "dev": true
     },
-    "cors": {
-      "version": "2.8.5",
-      "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
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+      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.1.tgz",
+      "integrity": "sha512-x0PcCVdEc4J8igv1qe2vttz8JKAKcTs3wfIA3L8xEty3VzxgORLrzZrNWaVMc+pBC4U3aDOb9BnWLAQ8J11vkA==",
       "dev": true,
       "requires": {
-        "estree-walker": "^0.6.0",
+        "estree-walker": "^0.6.1",
         "is-reference": "^1.1.2",
         "magic-string": "^0.25.2",
-        "resolve": "^1.10.1",
-        "rollup-pluginutils": "^2.7.0"
+        "resolve": "^1.11.0",
+        "rollup-pluginutils": "^2.8.1"
       }
     },
     "rollup-plugin-node-builtins": {
@@ -4771,16 +5242,16 @@
       }
     },
     "rollup-plugin-node-resolve": {
-      "version": "5.0.3",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.0.3.tgz",
-      "integrity": "sha512-Mhhmf0x493xgUPEsRELnU1VM+4+WO82knWkAbZ0d2DvZQZJMbhzyQK/hqtpVscoRru1EqlK3TM1kK9ro469wPw==",
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.2.0.tgz",
+      "integrity": "sha512-jUlyaDXts7TW2CqQ4GaO5VJ4PwwaV8VUGA7+km3n6k6xtOEacf61u0VXwN80phY/evMcaS+9eIeJ9MOyDxt5Zw==",
       "dev": true,
       "requires": {
         "@types/resolve": "0.0.8",
         "builtin-modules": "^3.1.0",
         "is-module": "^1.0.0",
-        "resolve": "^1.11.0",
-        "rollup-pluginutils": "^2.8.0"
+        "resolve": "^1.11.1",
+        "rollup-pluginutils": "^2.8.1"
       }
     },
     "rollup-plugin-typescript2": {
@@ -4846,35 +5317,6 @@
       "integrity": "sha1-uYSPJdbPNjMwc+ye+IVtQvEjPlI=",
       "dev": true
     },
-    "send": {
-      "version": "0.17.1",
-      "resolved": "https://registry.npmjs.org/send/-/send-0.17.1.tgz",
-      "integrity": "sha512-BsVKsiGcQMFwT8UxypobUKyv7irCNRHk1T0G680vk88yf6LBByGcZJOTJCrTP2xVN6yI+XjPJcNuE3V4fT9sAg==",
-      "dev": true,
-      "requires": {
-        "debug": "2.6.9",
-        "depd": "~1.1.2",
-        "destroy": "~1.0.4",
-        "encodeurl": "~1.0.2",
-        "escape-html": "~1.0.3",
-        "etag": "~1.8.1",
-        "fresh": "0.5.2",
-        "http-errors": "~1.7.2",
-        "mime": "1.6.0",
-        "ms": "2.1.1",
-        "on-finished": "~2.3.0",
-        "range-parser": "~1.2.1",
-        "statuses": "~1.5.0"
-      },
-      "dependencies": {
-        "ms": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
-          "dev": true
-        }
-      }
-    },
     "serve-index": {
       "version": "1.9.1",
       "resolved": "https://registry.npmjs.org/serve-index/-/serve-index-1.9.1.tgz",
@@ -4902,6 +5344,12 @@
             "statuses": ">= 1.4.0 < 2"
           }
         },
+        "inherits": {
+          "version": "2.0.3",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+          "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+          "dev": true
+        },
         "setprototypeof": {
           "version": "1.1.0",
           "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
@@ -4911,9 +5359,9 @@
       }
     },
     "set-value": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.0.tgz",
-      "integrity": "sha512-hw0yxk9GT/Hr5yJEYnHNKYXkIA8mVJgd9ditYZCe16ZczcaELYYcfvaXesNACk2O8O0nTiPQcQhGUQj8JLzeeg==",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.1.tgz",
+      "integrity": "sha512-JxHc1weCN68wRY0fhCoXpyK55m/XPHafOmK4UWD7m2CI14GMcFypt4w/0+NV5f/ZMby2F6S2wwA7fgynh9gWSw==",
       "dev": true,
       "requires": {
         "extend-shallow": "^2.0.1",
@@ -5082,9 +5530,9 @@
       "dev": true
     },
     "sourcemap-codec": {
-      "version": "1.4.4",
-      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.4.tgz",
-      "integrity": "sha512-CYAPYdBu34781kLHkaW3m6b/uUSyMOC2R61gcYMWooeuaGtjof86ZA/8T+qVPPt7np1085CR9hmMGrySwEc8Xg==",
+      "version": "1.4.6",
+      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.6.tgz",
+      "integrity": "sha512-1ZooVLYFxC448piVLBbtOxFcXwnymH9oUF8nRd3CuYDVvkRBxRl6pB4Mtas5a4drtL+E8LDgFkQNcgIw6tc8Hg==",
       "dev": true
     },
     "split": {
@@ -5148,10 +5596,13 @@
       "dev": true
     },
     "string_decoder": {
-      "version": "0.10.31",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
-      "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
-      "dev": true
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "~5.1.0"
+      }
     },
     "systemjs": {
       "version": "0.21.6",
@@ -5231,44 +5682,21 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.5.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.2.tgz",
-      "integrity": "sha512-7KxJovlYhTX5RaRbUdkAXN1KUZ8PwWlTzQdHV6xNqvuFOs7+WBo10TQUqT19Q/Jz2hk5v9TQDIhyLhhJY4p5AA==",
+      "version": "3.5.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.3.tgz",
+      "integrity": "sha512-ACzBtm/PhXBDId6a6sDJfroT2pOWt/oOnk4/dElG5G33ZL776N3Y6/6bKZJBFpd+b05F3Ct9qDjMeJmRWtE2/g==",
       "dev": true
     },
     "union-value": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz",
-      "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",
+      "integrity": "sha512-tJfXmxMeWYnczCVs7XAEvIV7ieppALdyepWMkHkwciRpZraG/xwT+s2JN8+pr1+8jCRf80FFzvr+MpQeeoF4Xg==",
       "dev": true,
       "requires": {
         "arr-union": "^3.1.0",
         "get-value": "^2.0.6",
         "is-extendable": "^0.1.1",
-        "set-value": "^0.4.3"
-      },
-      "dependencies": {
-        "extend-shallow": {
-          "version": "2.0.1",
-          "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
-          "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
-          "dev": true,
-          "requires": {
-            "is-extendable": "^0.1.0"
-          }
-        },
-        "set-value": {
-          "version": "0.4.3",
-          "resolved": "https://registry.npmjs.org/set-value/-/set-value-0.4.3.tgz",
-          "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=",
-          "dev": true,
-          "requires": {
-            "extend-shallow": "^2.0.1",
-            "is-extendable": "^0.1.1",
-            "is-plain-object": "^2.0.1",
-            "to-object-path": "^0.3.0"
-          }
-        }
+        "set-value": "^2.0.1"
       }
     },
     "universalify": {
@@ -5341,6 +5769,15 @@
       "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
       "dev": true
     },
+    "url": {
+      "version": "0.11.0",
+      "resolved": "https://registry.npmjs.org/url/-/url-0.11.0.tgz",
+      "integrity": "sha1-ODjpfPxgUh63PFJajlW/3Z4uKPE=",
+      "requires": {
+        "punycode": "1.3.2",
+        "querystring": "0.2.0"
+      }
+    },
     "use": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
@@ -5372,12 +5809,13 @@
       "dev": true
     },
     "websocket-driver": {
-      "version": "0.7.0",
-      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.0.tgz",
-      "integrity": "sha1-DK+dLXVdk67gSdS90NP+LMoqJOs=",
+      "version": "0.7.3",
+      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.3.tgz",
+      "integrity": "sha512-bpxWlvbbB459Mlipc5GBzzZwhoZgGEZLuqPaR0INBGnPAY1vdBX6hPnoFXiw+3yWxDuHyQjO2oXTMyS8A5haFg==",
       "dev": true,
       "requires": {
-        "http-parser-js": ">=0.4.0",
+        "http-parser-js": ">=0.4.0 <0.4.11",
+        "safe-buffer": ">=5.1.0",
         "websocket-extensions": ">=0.1.1"
       }
     },
diff --git a/package.json b/package.json
index 07cf1ea..8aafc46 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,9 @@
     "build": "tsc",
     "rollup": "rollup -c",
     "watch": "npx live-server --open=index.html --watch='./*.html,./*.js'",
-    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./*.js'"
+    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./src/*.js'",
+    "pixi": "cd pixi.js && npm run local && cd .. && npm run pixi:install",
+    "pixi:install": "rm -rf node_modules/pixi.js && rm package-lock.json"
   },
   "repository": {
     "type": "git",
@@ -17,13 +19,15 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@types/systemjs": "^0.20.6",
+    "@types/webgl2": "0.0.5",
     "imgui-js": "file:./imgui-js",
+    "pixi.js": "file:pixi.js/bundles/pixi.js/pixi.js-5.1.4.tgz",
     "rollup": "^1.15.6",
     "systemjs": "^0.21.5"
   },
   "devDependencies": {
     "@types/node": "^12.0.0",
+    "@types/systemjs": "^0.20.6",
     "live-server": "^1.2.1",
     "rollup-plugin-commonjs": "^10.0.0",
     "rollup-plugin-node-builtins": "^2.1.2",
diff --git a/pixi.js b/pixi.js
new file mode 160000
index 0000000..1b78731
--- /dev/null
+++ b/pixi.js
@@ -0,0 +1 @@
+Subproject commit 1b78731948b57c635a2e65444c387eed31ec7428
diff --git a/session b/session
index bbf5582..06b9a8d 100644
--- a/session
+++ b/session
@@ -1,322 +1,62 @@
 let SessionLoad = 1
 if &cp | set nocp | endif
-let s:cpo_save=&cpo
-set cpo&vim
-imap <Nul> <C-Space>
-inoremap <expr> <Up> pumvisible() ? "\" : "\<Up>"
-inoremap <expr> <S-Tab> pumvisible() ? "\" : "\<S-Tab>"
-inoremap <expr> <Down> pumvisible() ? "\" : "\<Down>"
-nnoremap <silent>  :TmuxNavigateLeft
-nnoremap <silent> <NL> :TmuxNavigateDown
-nnoremap <silent>  :TmuxNavigateUp
-nnoremap <silent>  :TmuxNavigateRight
-nnoremap <silent>  :TmuxNavigatePrevious
-nnoremap \d :YcmShowDetailedDiagnostic
-vnoremap <silent> \c :call CopyMarkWithCursor("<", ">")
-nnoremap <silent> \c :set opfunc=OpSysCopyMarkg@
-vmap gx <Plug>NetrwBrowseXVis
-nmap gx <Plug>NetrwBrowseX
-vnoremap <silent> <Plug>NetrwBrowseXVis :call netrw#BrowseXVis()
-nnoremap <silent> <Plug>NetrwBrowseX :call netrw#BrowseX(expand((exists("g:netrw_gx")? g:netrw_gx : '<cfile>')),netrw#CheckIfRemote())
-inoremap <expr> 	 pumvisible() ? "\" : "\	"
-let &cpo=s:cpo_save
-unlet s:cpo_save
-set autoindent
-set backspace=indent,eol,start
-set completefunc=youcompleteme#CompleteFunc
-set completeopt=preview,menuone
-set cpoptions=aAceFsB
-set fileencodings=ucs-bom,utf-8,default,latin1
-set fillchars=vert:|,fold:-,vert:│
-set helplang=en
-set hidden
-set include=import_s.\\zs[^'\"]*\\ze
-set includeexpr=TsIncludeExpr(v:fname)
-set nomodeline
-set path=.,/usr/include,,,./node_modules/**,node_modules/**
-set ruler
-set runtimepath=~/.vim,~/.vim/bundle/JustDo,~/.vim/bundle/YouCompleteMe,~/.vim/bundle/vim-easymotion,~/.vim/bundle/vim-tmux-navigator,~/.vim/bundle/yats.vim,/var/lib/vim/addons,/usr/share/vim/vimfiles,/usr/share/vim/vim74,/usr/share/vim/vimfiles/after,/var/lib/vim/addons/after,~/.vim/after
-set sessionoptions=blank,buffers,folds,help,options,tabpages,winsize,sesdir
-set shortmess=filnxtToOc
-set suffixes=.bak,~,.swp,.o,.info,.aux,.log,.dvi,.bbl,.blg,.brf,.cb,.ind,.idx,.ilg,.inx,.out,.toc
-set suffixesadd=.ts
 let s:so_save = &so | let s:siso_save = &siso | set so=0 siso=0
 let v:this_session=expand("<sfile>:p")
 silent only
+silent tabonly
 exe "cd " . escape(expand("<sfile>:p:h"), ' ')
 if expand('%') == '' && !&modified && line('$') <= 1 && getline(1) == ''
   let s:wipebuf = bufnr('%')
 endif
 set shortmess=aoO
+argglobal
+%argdel
+edit src/imgui_impl.ts
+set splitbelow splitright
+set nosplitbelow
+set nosplitright
+wincmd t
+set winminheight=0
+set winheight=1
+set winminwidth=0
+set winwidth=1
+argglobal
+let s:l = 1 - ((0 * winheight(0) + 21) / 42)
+if s:l < 1 | let s:l = 1 | endif
+exe s:l
+normal! zt
+1
+normal! 0
+tabnext 1
+badd +0 src/imgui_impl.ts
 badd +12 rollup.config.js
 badd +7 imgui-js/rollup.config.js
-badd +7 imgui-js/tsconfig.json
-badd +26 tsconfig.json
+badd +4 imgui-js/tsconfig.json
+badd +12 tsconfig.json
 badd +1 index.js
 badd +3904 imgui-js/imgui.ts
-badd +39 src/main.ts
+badd +80 src/main.ts
 badd +52 imgui-js/example/main.ts
-badd +8 package.json
+badd +34 package.json
 badd +1 imgui-js/dist/imgui.d.ts
 badd +1 imgui-js/bind-imgui.js
 badd +1 imgui-js/example/imgui_impl.js
 badd +2 imgui-js/example/imgui_impl.ts
 badd +295 imgui-js/imgui_demo.ts
 badd +4 index.html
-badd +14 indexdev.html
+badd +4 indexdev.html
 badd +6 imgui-js/example/index.html
-badd +2 imgui-js/example/system.config.js
+badd +6 imgui-js/example/system.config.js
 badd +40 imgui-js/package.json
-badd +201 node_modules/systemjs/dist/system.js
-argglobal
-silent! argdel *
-edit package.json
-set splitbelow splitright
-wincmd _ | wincmd |
-split
-1wincmd k
-wincmd w
-set nosplitbelow
-set nosplitright
-wincmd t
-set winheight=1 winwidth=1
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-argglobal
-enew
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=wipe
-setlocal buflisted
-setlocal buftype=nofile
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=s1:/*,mb:*,ex:*/,://,b:#,:%,:XCOMM,n:>,fb:-
-setlocal commentstring=/*%s*/
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != ''
-setlocal filetype=
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=tcq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=
-setlocal indentkeys=0{,0},:,0#,!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal nomodifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal previewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal noswapfile
-setlocal synmaxcol=3000
-if &syntax != ''
-setlocal syntax=
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal winfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-wincmd w
-argglobal
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=
-setlocal buflisted
-setlocal buftype=
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=
-setlocal commentstring=
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != 'json'
-setlocal filetype=json
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=cq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=GetJSONIndent()
-setlocal indentkeys=0{,0},0),0[,0],!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal modifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal nopreviewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal swapfile
-setlocal synmaxcol=3000
-if &syntax != 'json'
-setlocal syntax=json
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal nowinfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-silent! normal! zE
-let s:l = 23 - ((19 * winheight(0) + 15) / 31)
-if s:l < 1 | let s:l = 1 | endif
-exe s:l
-normal! zt
-23
-normal! 024|
-wincmd w
-2wincmd w
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-tabnext 1
-if exists('s:wipebuf')
+badd +1 node_modules/systemjs/dist/system.js
+badd +1 src/main.js
+badd +1 imgui-js/example/main.js
+if exists('s:wipebuf') && len(win_findbuf(s:wipebuf)) == 0
   silent exe 'bwipe ' . s:wipebuf
 endif
 unlet! s:wipebuf
 set winheight=1 winwidth=20 shortmess=filnxtToOc
+set winminheight=1 winminwidth=1
 let s:sx = expand("<sfile>:p:r")."x.vim"
 if file_readable(s:sx)
   exe "source " . fnameescape(s:sx)
diff --git a/src/imgui_impl.js b/src/imgui_impl.js
new file mode 100644
index 0000000..416e4b2
--- /dev/null
+++ b/src/imgui_impl.js
@@ -0,0 +1,736 @@
+System.register(["imgui-js", "pixi.js", "./utils"], function (exports_1, context_1) {
+    "use strict";
+    var ImGui, PIXI, U, clipboard_text, contexts, contextIOs, isFirstWindow, ImGuiImplInternalRenderer, gl, app, ImGuiWindowLayer, ImGuiWindow, canvas, g_ShaderHandle, g_VertHandle, g_FragHandle, g_AttribLocationTex, g_AttribLocationProjMtx, g_AttribLocationPosition, g_AttribLocationUV, g_AttribLocationColor, g_VaoHandle, g_VboHandle, g_ElementsHandle, g_FontTexture, mouse_button_map;
+    var __moduleName = context_1 && context_1.id;
+    function document_on_copy(event) {
+        if (event.clipboardData) {
+            event.clipboardData.setData("text/plain", clipboard_text);
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function document_on_cut(event) {
+        if (event.clipboardData) {
+            event.clipboardData.setData("text/plain", clipboard_text);
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function document_on_paste(event) {
+        if (event.clipboardData) {
+            clipboard_text = event.clipboardData.getData("text/plain");
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function window_on_gamepadconnected(event /* GamepadEvent */) {
+        console.log("Gamepad connected at index %d: %s. %d buttons, %d axes.", event.gamepad.index, event.gamepad.id, event.gamepad.buttons.length, event.gamepad.axes.length);
+    }
+    function window_on_gamepaddisconnected(event /* GamepadEvent */) {
+        console.log("Gamepad disconnected at index %d: %s.", event.gamepad.index, event.gamepad.id);
+    }
+    function canvas_on_blur(event) {
+        for (var io of contextIOs) {
+            io.KeyCtrl = false;
+            io.KeyShift = false;
+            io.KeyAlt = false;
+            io.KeySuper = false;
+            for (let i = 0; i < io.KeysDown.length; ++i) {
+                io.KeysDown[i] = false;
+            }
+            for (let i = 0; i < io.MouseDown.length; ++i) {
+                io.MouseDown[i] = false;
+            }
+        }
+    }
+    function canvas_on_keydown(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.KeyCtrl = event.ctrlKey;
+            io.KeyShift = event.shiftKey;
+            io.KeyAlt = event.altKey;
+            io.KeySuper = event.metaKey;
+            ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+            io.KeysDown[event.keyCode] = true;
+            // forward to the keypress event
+            if ( /*io.WantCaptureKeyboard ||*/event.key === "Tab") {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_keyup(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.KeyCtrl = event.ctrlKey;
+            io.KeyShift = event.shiftKey;
+            io.KeyAlt = event.altKey;
+            io.KeySuper = event.metaKey;
+            ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+            io.KeysDown[event.keyCode] = false;
+            if (io.WantCaptureKeyboard) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_keypress(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.AddInputCharacter(event.charCode);
+            if (io.WantCaptureKeyboard) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_contextmenu(event) {
+        for (var io of contextIOs) {
+            if (io.WantCaptureMouse) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_wheel(event) {
+        for (var io of contextIOs) {
+            let scale = 1.0;
+            switch (event.deltaMode) {
+                case event.DOM_DELTA_PIXEL:
+                    scale = 0.01;
+                    break;
+                case event.DOM_DELTA_LINE:
+                    scale = 0.2;
+                    break;
+                case event.DOM_DELTA_PAGE:
+                    scale = 1.0;
+                    break;
+            }
+            io.MouseWheelH = event.deltaX * scale;
+            io.MouseWheel = -event.deltaY * scale; // Mouse wheel: 1 unit scrolls about 5 lines text.
+            if (io.WantCaptureMouse) {
+                event.preventDefault();
+            }
+        }
+    }
+    function PrePIXIInit() {
+        PIXI.Renderer.registerPlugin("imgui_renderer", U.fromConstructor(ImGuiImplInternalRenderer));
+    }
+    exports_1("PrePIXIInit", PrePIXIInit);
+    function Init(_app) {
+        // Setup Dear ImGui binding
+        ImGui.IMGUI_CHECKVERSION();
+        if (typeof (document) !== "undefined") {
+            document.body.addEventListener("copy", document_on_copy);
+            document.body.addEventListener("cut", document_on_cut);
+            document.body.addEventListener("paste", document_on_paste);
+        }
+        if (typeof (window) !== "undefined") {
+            window.addEventListener("gamepadconnected", window_on_gamepadconnected);
+            window.addEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+        }
+        app = _app;
+        gl = app.renderer.gl;
+        canvas = app.view;
+        gl.getExtension("EXT_color_buffer_float");
+        if (canvas !== null) {
+            canvas.style.touchAction = "none"; // Disable browser handling of all panning and zooming gestures.
+            canvas.addEventListener("blur", canvas_on_blur);
+            canvas.addEventListener("keydown", canvas_on_keydown);
+            canvas.addEventListener("keyup", canvas_on_keyup);
+            canvas.addEventListener("keypress", canvas_on_keypress);
+            canvas.addEventListener("contextmenu", canvas_on_contextmenu);
+            canvas.addEventListener("wheel", canvas_on_wheel);
+        }
+        CreateDeviceObjects();
+    }
+    exports_1("Init", Init);
+    function Shutdown() {
+        DestroyDeviceObjects();
+        if (canvas !== null) {
+            canvas.removeEventListener("blur", canvas_on_blur);
+            canvas.removeEventListener("keydown", canvas_on_keydown);
+            canvas.removeEventListener("keyup", canvas_on_keyup);
+            canvas.removeEventListener("keypress", canvas_on_keypress);
+            canvas.removeEventListener("contextmenu", canvas_on_contextmenu);
+            canvas.removeEventListener("wheel", canvas_on_wheel);
+        }
+        app = null;
+        canvas = null;
+        if (typeof (window) !== "undefined") {
+            window.removeEventListener("gamepadconnected", window_on_gamepadconnected);
+            window.removeEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+        }
+        if (typeof (document) !== "undefined") {
+            document.body.removeEventListener("copy", document_on_copy);
+            document.body.removeEventListener("cut", document_on_cut);
+            document.body.removeEventListener("paste", document_on_paste);
+        }
+    }
+    exports_1("Shutdown", Shutdown);
+    function CreateFontsTexture() {
+        const io = ImGui.GetIO();
+        // Backup GL state
+        const last_texture = gl && gl.getParameter(gl.TEXTURE_BINDING_2D);
+        // Build texture atlas
+        // const width: number = 256;
+        // const height: number = 256;
+        // const pixels: Uint8Array = new Uint8Array(4 * width * height).fill(0xff);
+        const { width, height, pixels } = io.Fonts.GetTexDataAsRGBA32(); // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+        // console.log(`font texture ${width} x ${height} @ ${pixels.length}`);
+        // Upload texture to graphics system
+        g_FontTexture = gl && gl.createTexture();
+        gl && gl.bindTexture(gl.TEXTURE_2D, g_FontTexture);
+        gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+        gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+        // gl && gl.pixelStorei(gl.UNPACK_ROW_LENGTH); // WebGL2
+        gl && gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+        // Store our identifier
+        io.Fonts.TexID = g_FontTexture || { foo: "bar" };
+        // console.log("font texture id", g_FontTexture);
+        // Restore modified GL state
+        gl && last_texture && gl.bindTexture(gl.TEXTURE_2D, last_texture);
+    }
+    function DestroyFontsTexture() {
+        const io = ImGui.GetIO();
+        io.Fonts.TexID = null;
+        gl && gl.deleteTexture(g_FontTexture);
+        g_FontTexture = null;
+    }
+    function CreateDeviceObjects() {
+        const vertex_shader = [
+            "#version 300 es",
+            "uniform mat4 ProjMtx;",
+            "in vec2 Position;",
+            "in vec2 UV;",
+            "in vec4 Color;",
+            "out vec2 Frag_UV;",
+            "out vec4 Frag_Color;",
+            "void main() {",
+            "	Frag_UV = UV;",
+            "	Frag_Color = Color;",
+            "	gl_Position = ProjMtx * vec4(Position.xy,0,1);",
+            "}",
+        ];
+        const fragment_shader = [
+            "#version 300 es",
+            "precision mediump float;",
+            "uniform sampler2D Texture;",
+            "in vec2 Frag_UV;",
+            "in vec4 Frag_Color;",
+            "out vec4 OutColor;",
+            "void main() {",
+            "	OutColor = Frag_Color * texture(Texture, Frag_UV);",
+            "}",
+        ];
+        g_ShaderHandle = gl && gl.createProgram();
+        g_VertHandle = gl && gl.createShader(gl.VERTEX_SHADER);
+        g_FragHandle = gl && gl.createShader(gl.FRAGMENT_SHADER);
+        gl && gl.shaderSource(g_VertHandle, vertex_shader.join("\n"));
+        gl && gl.shaderSource(g_FragHandle, fragment_shader.join("\n"));
+        gl && gl.compileShader(g_VertHandle);
+        gl && gl.compileShader(g_FragHandle);
+        gl && gl.attachShader(g_ShaderHandle, g_VertHandle);
+        gl && gl.attachShader(g_ShaderHandle, g_FragHandle);
+        gl && gl.linkProgram(g_ShaderHandle);
+        g_AttribLocationTex = gl && gl.getUniformLocation(g_ShaderHandle, "Texture");
+        g_AttribLocationProjMtx = gl && gl.getUniformLocation(g_ShaderHandle, "ProjMtx");
+        g_AttribLocationPosition = gl && gl.getAttribLocation(g_ShaderHandle, "Position") || 0;
+        g_AttribLocationUV = gl && gl.getAttribLocation(g_ShaderHandle, "UV") || 0;
+        g_AttribLocationColor = gl && gl.getAttribLocation(g_ShaderHandle, "Color") || 0;
+        g_VaoHandle = gl && gl.createVertexArray();
+        g_VboHandle = gl && gl.createBuffer();
+        g_ElementsHandle = gl && gl.createBuffer();
+    }
+    function DestroyDeviceObjects() {
+        DestroyFontsTexture();
+        gl && gl.deleteVertexArray(g_VaoHandle);
+        g_VaoHandle = null;
+        gl && gl.deleteBuffer(g_VboHandle);
+        g_VboHandle = null;
+        gl && gl.deleteBuffer(g_ElementsHandle);
+        g_ElementsHandle = null;
+        g_AttribLocationTex = null;
+        g_AttribLocationProjMtx = null;
+        g_AttribLocationPosition = -1;
+        g_AttribLocationUV = -1;
+        g_AttribLocationColor = -1;
+        gl && gl.deleteProgram(g_ShaderHandle);
+        g_ShaderHandle = null;
+        gl && gl.deleteShader(g_VertHandle);
+        g_VertHandle = null;
+        gl && gl.deleteShader(g_FragHandle);
+        g_FragHandle = null;
+    }
+    return {
+        setters: [
+            function (ImGui_1) {
+                ImGui = ImGui_1;
+            },
+            function (PIXI_1) {
+                PIXI = PIXI_1;
+            },
+            function (U_1) {
+                U = U_1;
+            }
+        ],
+        execute: function () {
+            clipboard_text = "";
+            contexts = [];
+            contextIOs = [];
+            isFirstWindow = true;
+            ImGuiImplInternalRenderer = class ImGuiImplInternalRenderer extends PIXI.ObjectRenderer {
+                constructor(r) {
+                    super(r);
+                }
+                render(owner) {
+                    if (!(owner instanceof ImGuiWindowLayer))
+                        return;
+                    const window = owner.window;
+                    const io = window.io;
+                    const draw_data = ImGui.GetDrawData();
+                    if (draw_data === null) {
+                        throw new Error();
+                    }
+                    gl || console.log(draw_data);
+                    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+                    const fb_width = io.DisplaySize.x * io.DisplayFramebufferScale.x;
+                    const fb_height = io.DisplaySize.y * io.DisplayFramebufferScale.y;
+                    if (fb_width === 0 || fb_height === 0) {
+                        return;
+                    }
+                    draw_data.ScaleClipRects(io.DisplayFramebufferScale);
+                    // Backup GL state
+                    const last_program = gl && gl.getParameter(gl.CURRENT_PROGRAM) || null;
+                    const last_active_texture = gl && gl.getParameter(gl.ACTIVE_TEXTURE) || null;
+                    gl && gl.activeTexture(gl.TEXTURE0);
+                    const last_texture0 = gl && gl.getParameter(gl.TEXTURE_BINDING_2D) || null;
+                    const last_vertex_array = gl && gl.getParameter(gl.VERTEX_ARRAY_BINDING) || null;
+                    const last_array_buffer = gl && gl.getParameter(gl.ARRAY_BUFFER_BINDING) || null;
+                    const last_element_array_buffer = gl && gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING) || null;
+                    // GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+                    const last_viewport = gl && gl.getParameter(gl.VIEWPORT) || null;
+                    const last_scissor_box = gl && gl.getParameter(gl.SCISSOR_BOX) || null;
+                    const last_blend_src_rgb = gl && gl.getParameter(gl.BLEND_SRC_RGB) || null;
+                    const last_blend_dst_rgb = gl && gl.getParameter(gl.BLEND_DST_RGB) || null;
+                    const last_blend_src_alpha = gl && gl.getParameter(gl.BLEND_SRC_ALPHA) || null;
+                    const last_blend_dst_alpha = gl && gl.getParameter(gl.BLEND_DST_ALPHA) || null;
+                    const last_blend_equation_rgb = gl && gl.getParameter(gl.BLEND_EQUATION_RGB) || null;
+                    const last_blend_equation_alpha = gl && gl.getParameter(gl.BLEND_EQUATION_ALPHA) || null;
+                    const last_enable_blend = gl && gl.getParameter(gl.BLEND) || null;
+                    const last_enable_cull_face = gl && gl.getParameter(gl.CULL_FACE) || null;
+                    const last_enable_depth_test = gl && gl.getParameter(gl.DEPTH_TEST) || null;
+                    const last_enable_scissor_test = gl && gl.getParameter(gl.SCISSOR_TEST) || null;
+                    gl.clearColor(0, 0, 0, 0);
+                    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+                    gl && gl.bindVertexArray(g_VaoHandle);
+                    // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
+                    gl && gl.enable(gl.BLEND);
+                    gl && gl.blendEquation(gl.FUNC_ADD);
+                    gl && gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE);
+                    gl && gl.disable(gl.CULL_FACE);
+                    gl && gl.disable(gl.DEPTH_TEST);
+                    gl && gl.enable(gl.SCISSOR_TEST);
+                    // glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+                    // Setup viewport, orthographic projection matrix
+                    // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+                    gl && gl.viewport(0, 0, fb_width, fb_height);
+                    const L = draw_data.DisplayPos.x;
+                    const R = draw_data.DisplayPos.x + draw_data.DisplaySize.x;
+                    const T = draw_data.DisplayPos.y;
+                    const B = draw_data.DisplayPos.y + draw_data.DisplaySize.y;
+                    // we actually flip the bottom and top here to match with PIXI's texture usage
+                    const ortho_projection = new Float32Array([
+                        2.0 / (R - L), 0.0, 0.0, 0.0,
+                        0.0, 2.0 / (B - T), 0.0, 0.0,
+                        0.0, 0.0, -1.0, 0.0,
+                        (R + L) / (L - R), (B + T) / (T - B), 0.0, 1.0,
+                    ]);
+                    gl && gl.useProgram(g_ShaderHandle);
+                    gl && gl.uniform1i(g_AttribLocationTex, 0);
+                    gl && g_AttribLocationProjMtx && gl.uniformMatrix4fv(g_AttribLocationProjMtx, false, ortho_projection);
+                    // Render command lists
+                    gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationPosition);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationUV);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationColor);
+                    gl && gl.vertexAttribPointer(g_AttribLocationPosition, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertPosOffset);
+                    gl && gl.vertexAttribPointer(g_AttribLocationUV, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertUVOffset);
+                    gl && gl.vertexAttribPointer(g_AttribLocationColor, 4, gl.UNSIGNED_BYTE, true, ImGui.ImDrawVertSize, ImGui.ImDrawVertColOffset);
+                    // Draw
+                    const pos = draw_data.DisplayPos;
+                    const idx_buffer_type = gl && ((ImGui.ImDrawIdxSize === 4) ? gl.UNSIGNED_INT : gl.UNSIGNED_SHORT) || 0;
+                    draw_data.IterateDrawLists((draw_list) => {
+                        gl || console.log(draw_list);
+                        gl || console.log("VtxBuffer.length", draw_list.VtxBuffer.length);
+                        gl || console.log("IdxBuffer.length", draw_list.IdxBuffer.length);
+                        let idx_buffer_offset = 0;
+                        gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+                        gl && gl.bufferData(gl.ARRAY_BUFFER, draw_list.VtxBuffer, gl.STREAM_DRAW);
+                        gl && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+                        gl && gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, draw_list.IdxBuffer, gl.STREAM_DRAW);
+                        draw_list.IterateDrawCmds((draw_cmd) => {
+                            gl || console.log(draw_cmd);
+                            gl || console.log("ElemCount", draw_cmd.ElemCount);
+                            gl || console.log("ClipRect", draw_cmd.ClipRect.x, draw_cmd.ClipRect.y, draw_cmd.ClipRect.z - draw_cmd.ClipRect.x, draw_cmd.ClipRect.w - draw_cmd.ClipRect.y);
+                            gl || console.log("TextureId", draw_cmd.TextureId);
+                            if (!gl) {
+                                console.log("i: pos.x pos.y uv.x uv.y col");
+                                for (let i = 0; i < Math.min(3, draw_cmd.ElemCount); ++i) {
+                                    const view = new ImGui.ImDrawVert(draw_list.VtxBuffer.buffer, draw_list.VtxBuffer.byteOffset + i * ImGui.ImDrawVertSize);
+                                    console.log(`${i}: ${view.pos[0].toFixed(2)} ${view.pos[1].toFixed(2)} ${view.uv[0].toFixed(5)} ${view.uv[1].toFixed(5)} ${("00000000" + view.col[0].toString(16)).substr(-8)}`);
+                                }
+                            }
+                            if (draw_cmd.UserCallback !== null) {
+                                // User callback (registered via ImDrawList::AddCallback)
+                                draw_cmd.UserCallback(draw_list, draw_cmd);
+                            }
+                            else {
+                                const clip_rect = new ImGui.ImVec4(draw_cmd.ClipRect.x - pos.x, draw_cmd.ClipRect.y - pos.y, draw_cmd.ClipRect.z - pos.x, draw_cmd.ClipRect.w - pos.y);
+                                if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0 && clip_rect.w >= 0.0) {
+                                    // Apply scissor/clipping rectangle
+                                    gl && gl.scissor(clip_rect.x, clip_rect.y, clip_rect.z - clip_rect.x, clip_rect.w - clip_rect.y);
+                                    // Bind texture, Draw
+                                    gl && gl.bindTexture(gl.TEXTURE_2D, draw_cmd.TextureId);
+                                    gl && gl.drawElements(gl.TRIANGLES, draw_cmd.ElemCount, idx_buffer_type, idx_buffer_offset);
+                                }
+                            }
+                            idx_buffer_offset += draw_cmd.ElemCount * ImGui.ImDrawIdxSize;
+                        });
+                    });
+                    // Restore modified GL state
+                    gl && (last_program !== null) && gl.useProgram(last_program);
+                    gl && (last_texture0 !== null) && gl.bindTexture(gl.TEXTURE_2D, last_texture0);
+                    gl && (last_active_texture !== null) && gl.activeTexture(last_active_texture);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationPosition);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationUV);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationColor);
+                    gl && (last_vertex_array !== null) && gl.bindVertexArray(last_vertex_array);
+                    gl && (last_array_buffer !== null) && gl.bindBuffer(gl.ARRAY_BUFFER, last_array_buffer);
+                    gl && (last_element_array_buffer !== null) && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+                    gl && (last_viewport !== null) && gl.viewport(last_viewport[0], last_viewport[1], last_viewport[2], last_viewport[3]);
+                    gl && (last_scissor_box !== null) && gl.scissor(last_scissor_box[0], last_scissor_box[1], last_scissor_box[2], last_scissor_box[3]);
+                    gl && (last_blend_equation_rgb !== null && last_blend_equation_alpha !== null) && gl.blendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+                    gl && (last_blend_src_rgb !== null && last_blend_src_alpha !== null && last_blend_dst_rgb !== null && last_blend_dst_alpha !== null) && gl.blendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
+                    gl && (last_enable_blend ? gl.enable(gl.BLEND) : gl.disable(gl.BLEND));
+                    gl && (last_enable_cull_face ? gl.enable(gl.CULL_FACE) : gl.disable(gl.CULL_FACE));
+                    gl && (last_enable_depth_test ? gl.enable(gl.DEPTH_TEST) : gl.disable(gl.DEPTH_TEST));
+                    gl && (last_enable_scissor_test ? gl.enable(gl.SCISSOR_TEST) : gl.disable(gl.SCISSOR_TEST));
+                    // glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
+                }
+            };
+            gl = null;
+            app = null;
+            ImGuiWindowLayer = class ImGuiWindowLayer extends PIXI.Sprite {
+                constructor(window, tex) {
+                    super();
+                    this.pluginName = "imgui_renderer";
+                    this.window = window;
+                }
+            };
+            ImGuiWindow = class ImGuiWindow extends PIXI.Container {
+                constructor(sizeX, sizeY, update) {
+                    super();
+                    this.baseTex = new PIXI.BaseRenderTexture({ scaleMode: PIXI.SCALE_MODES.LINEAR, resolution: 1, type: PIXI.TYPES.FLOAT, format: PIXI.FORMATS.RGBA });
+                    this.tex = new PIXI.RenderTexture(this.baseTex);
+                    this.surface = new PIXI.Sprite(this.tex);
+                    this.imgui = new ImGuiWindowLayer(this, this.tex);
+                    this.ctx = ImGui.CreateContext(contextIOs.length == 0 ? null : contextIOs[0].Fonts);
+                    ImGui.SetCurrentContext(this.ctx);
+                    this.io = ImGui.GetIO();
+                    contexts.push(this.ctx);
+                    contextIOs.push(this.io);
+                    if (contexts.length == 1) {
+                        CreateFontsTexture();
+                    }
+                    if (typeof (window) !== "undefined") {
+                        ImGui.LoadIniSettingsFromMemory(window.localStorage.getItem("imgui.ini") || "");
+                    }
+                    if (typeof (navigator) !== "undefined") {
+                        this.io.ConfigMacOSXBehaviors = navigator.platform.match(/Mac/) !== null;
+                    }
+                    this.io.SetClipboardTextFn = (user_data, text) => {
+                        clipboard_text = text;
+                        // console.log(`set clipboard_text: "${clipboard_text}"`);
+                        if (typeof navigator !== "undefined" && typeof navigator.clipboard !== "undefined") {
+                            // console.log(`clipboard.writeText: "${clipboard_text}"`);
+                            navigator.clipboard.writeText(clipboard_text).then(() => {
+                                // console.log(`clipboard.writeText: "${clipboard_text}" done.`);
+                            });
+                        }
+                    };
+                    this.io.GetClipboardTextFn = (user_data) => {
+                        // if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+                        //     console.log(`clipboard.readText: "${clipboard_text}"`);
+                        //     (navigator as any).clipboard.readText().then((text: string): void => {
+                        //         clipboard_text = text;
+                        //         console.log(`clipboard.readText: "${clipboard_text}" done.`);
+                        //     });
+                        // }
+                        // console.log(`get clipboard_text: "${clipboard_text}"`);
+                        return clipboard_text;
+                    };
+                    this.io.ClipboardUserData = null;
+                    // Setup back-end capabilities flags
+                    this.io.BackendFlags |= ImGui.BackendFlags.HasMouseCursors; // We can honor GetMouseCursor() values (optional)
+                    // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+                    this.io.KeyMap[ImGui.Key.Tab] = 9;
+                    this.io.KeyMap[ImGui.Key.LeftArrow] = 37;
+                    this.io.KeyMap[ImGui.Key.RightArrow] = 39;
+                    this.io.KeyMap[ImGui.Key.UpArrow] = 38;
+                    this.io.KeyMap[ImGui.Key.DownArrow] = 40;
+                    this.io.KeyMap[ImGui.Key.PageUp] = 33;
+                    this.io.KeyMap[ImGui.Key.PageDown] = 34;
+                    this.io.KeyMap[ImGui.Key.Home] = 36;
+                    this.io.KeyMap[ImGui.Key.End] = 35;
+                    this.io.KeyMap[ImGui.Key.Insert] = 45;
+                    this.io.KeyMap[ImGui.Key.Delete] = 46;
+                    this.io.KeyMap[ImGui.Key.Backspace] = 8;
+                    this.io.KeyMap[ImGui.Key.Space] = 32;
+                    this.io.KeyMap[ImGui.Key.Enter] = 13;
+                    this.io.KeyMap[ImGui.Key.Escape] = 27;
+                    this.io.KeyMap[ImGui.Key.A] = 65;
+                    this.io.KeyMap[ImGui.Key.C] = 67;
+                    this.io.KeyMap[ImGui.Key.V] = 86;
+                    this.io.KeyMap[ImGui.Key.X] = 88;
+                    this.io.KeyMap[ImGui.Key.Y] = 89;
+                    this.io.KeyMap[ImGui.Key.Z] = 90;
+                    this.update = update;
+                    this.resize(sizeX, sizeY);
+                    this.imgui.pluginName = 'imgui_renderer';
+                    this.addChild(this.surface);
+                    app.renderer.plugins.interaction.addListener("mousedown", this.mouseDown.bind(this));
+                    app.renderer.plugins.interaction.addListener("mouseup", this.mouseUp.bind(this));
+                    app.ticker.add(this.updateInternal.bind(this));
+                    this.interactive = false;
+                    this.interactiveChildren = true;
+                    this.surface.interactive = false;
+                }
+                getSizeX() { return this.sizeX; }
+                getSizeY() { return this.sizeY; }
+                withContext(cb) {
+                    ImGui.SetCurrentContext(this.ctx);
+                    cb();
+                }
+                mouseDown(e) {
+                    if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface) {
+                        this.io.MouseDown[mouse_button_map[0]] = true;
+                    }
+                }
+                mouseUp(e) {
+                    if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface) {
+                        this.io.MouseDown[mouse_button_map[0]] = false;
+                    }
+                }
+                resize(sizeX, sizeY) {
+                    this.sizeX = sizeX;
+                    this.sizeY = sizeY;
+                    this.baseTex.resize(sizeX, sizeY);
+                    this.tex.frame = new PIXI.Rectangle(0, 0, this.baseTex.width, this.baseTex.height);
+                }
+                updateInternal(deltaTime) {
+                    const dt = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+                    ImGui.SetCurrentContext(this.ctx);
+                    if (this.io.WantSaveIniSettings) {
+                        this.io.WantSaveIniSettings = false;
+                        if (typeof (window) !== "undefined") {
+                            window.localStorage.setItem("imgui.ini", ImGui.SaveIniSettingsToMemory());
+                        }
+                    }
+                    this.io.DisplaySize.x = this.sizeX;
+                    this.io.DisplaySize.y = this.sizeY;
+                    this.io.DisplayFramebufferScale.x = 1;
+                    this.io.DisplayFramebufferScale.y = 1;
+                    this.io.DeltaTime = dt;
+                    let localPos = this.toLocal(app.renderer.plugins.interaction.mouse.global);
+                    if (localPos.x < 0 || localPos.y < 0 || localPos.x >= this.sizeX || localPos.y >= this.sizeY) {
+                        localPos = new PIXI.Point(-Number.MAX_VALUE, -Number.MAX_VALUE);
+                    }
+                    this.io.MousePos.x = localPos.x;
+                    this.io.MousePos.y = localPos.y;
+                    if (this.io.WantSetMousePos) {
+                        console.log("TODO: MousePos", this.io.MousePos.x, this.io.MousePos.y);
+                    }
+                    if (typeof (document) !== "undefined") {
+                        if (this.io.MouseDrawCursor) {
+                            document.body.style.cursor = "none";
+                        }
+                        else {
+                            switch (ImGui.GetMouseCursor()) {
+                                case ImGui.MouseCursor.None:
+                                    document.body.style.cursor = "none";
+                                    break;
+                                default:
+                                case ImGui.MouseCursor.Arrow:
+                                    document.body.style.cursor = "default";
+                                    break;
+                                case ImGui.MouseCursor.TextInput:
+                                    document.body.style.cursor = "text";
+                                    break; // When hovering over InputText, etc.
+                                case ImGui.MouseCursor.ResizeAll:
+                                    document.body.style.cursor = "move";
+                                    break; // Unused
+                                case ImGui.MouseCursor.ResizeNS:
+                                    document.body.style.cursor = "ns-resize";
+                                    break; // When hovering over an horizontal border
+                                case ImGui.MouseCursor.ResizeEW:
+                                    document.body.style.cursor = "ew-resize";
+                                    break; // When hovering over a vertical border or a column
+                                case ImGui.MouseCursor.ResizeNESW:
+                                    document.body.style.cursor = "nesw-resize";
+                                    break; // When hovering over the bottom-left corner of a window
+                                case ImGui.MouseCursor.ResizeNWSE:
+                                    document.body.style.cursor = "nwse-resize";
+                                    break; // When hovering over the bottom-right corner of a window
+                                case ImGui.MouseCursor.Hand:
+                                    document.body.style.cursor = "move";
+                                    break;
+                            }
+                        }
+                    }
+                    // Gamepad navigation mapping [BETA]
+                    for (let i = 0; i < this.io.NavInputs.length; ++i) {
+                        this.io.NavInputs[i] = 0.0;
+                    }
+                    if (this.io.ConfigFlags & ImGui.ConfigFlags.NavEnableGamepad) {
+                        // Update gamepad inputs
+                        const gamepads = (typeof (navigator) !== "undefined" && typeof (navigator.getGamepads) === "function") ? navigator.getGamepads() : [];
+                        for (let i = 0; i < gamepads.length; ++i) {
+                            const gamepad = gamepads[i];
+                            if (!gamepad) {
+                                continue;
+                            }
+                            const buttons_count = gamepad.buttons.length;
+                            const axes_count = gamepad.axes.length;
+                            const MAP_BUTTON = function (NAV_NO, BUTTON_NO) {
+                                if (!gamepad) {
+                                    return;
+                                }
+                                if (buttons_count > BUTTON_NO && gamepad.buttons[BUTTON_NO].pressed)
+                                    this.io.NavInputs[NAV_NO] = 1.0;
+                            };
+                            const MAP_ANALOG = function (NAV_NO, AXIS_NO, V0, V1) {
+                                if (!gamepad) {
+                                    return;
+                                }
+                                let v = (axes_count > AXIS_NO) ? gamepad.axes[AXIS_NO] : V0;
+                                v = (v - V0) / (V1 - V0);
+                                if (v > 1.0)
+                                    v = 1.0;
+                                if (this.io.NavInputs[NAV_NO] < v)
+                                    this.io.NavInputs[NAV_NO] = v;
+                            };
+                            // TODO: map input based on vendor and product id
+                            // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/id
+                            const match = gamepad.id.match(/^([0-9a-f]{4})-([0-9a-f]{4})-.*$/);
+                            const match_chrome = gamepad.id.match(/^.*\(.*Vendor: ([0-9a-f]{4}) Product: ([0-9a-f]{4})\).*$/);
+                            const vendor = (match && match[1]) || (match_chrome && match_chrome[1]) || "0000";
+                            const product = (match && match[2]) || (match_chrome && match_chrome[2]) || "0000";
+                            switch (vendor + product) {
+                                case "046dc216": // Logitech Logitech Dual Action (Vendor: 046d Product: c216)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 1); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 2); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 0); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_ANALOG(ImGui.NavInput.DpadLeft, 4, -0.3, -0.9); // D-Pad Left
+                                    MAP_ANALOG(ImGui.NavInput.DpadRight, 4, +0.3, +0.9); // D-Pad Right
+                                    MAP_ANALOG(ImGui.NavInput.DpadUp, 5, -0.3, -0.9); // D-Pad Up
+                                    MAP_ANALOG(ImGui.NavInput.DpadDown, 5, +0.3, +0.9); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 6); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 7); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                case "046dc21d": // Logitech Gamepad F310 (STANDARD GAMEPAD Vendor: 046d Product: c21d)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 0); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 1); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 2); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_BUTTON(ImGui.NavInput.DpadLeft, 14); // D-Pad Left
+                                    MAP_BUTTON(ImGui.NavInput.DpadRight, 15); // D-Pad Right
+                                    MAP_BUTTON(ImGui.NavInput.DpadUp, 12); // D-Pad Up
+                                    MAP_BUTTON(ImGui.NavInput.DpadDown, 13); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_ANALOG(ImGui.NavInput.TweakSlow, 6, +0.3, +0.9); // L2 / LT
+                                    MAP_ANALOG(ImGui.NavInput.TweakFast, 7, +0.3, +0.9); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                case "2dc86001": // 8Bitdo SN30 Pro  8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6001)
+                                case "2dc86101": // 8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6101)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 1); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 0); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 4); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_ANALOG(ImGui.NavInput.DpadLeft, 6, -0.3, -0.9); // D-Pad Left
+                                    MAP_ANALOG(ImGui.NavInput.DpadRight, 6, +0.3, +0.9); // D-Pad Right
+                                    MAP_ANALOG(ImGui.NavInput.DpadUp, 7, -0.3, -0.9); // D-Pad Up
+                                    MAP_ANALOG(ImGui.NavInput.DpadDown, 7, +0.3, +0.9); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 6); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 7); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 8); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 9); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                default: // standard gamepad: https://w3c.github.io/gamepad/#remapping
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 0); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 1); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 2); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_BUTTON(ImGui.NavInput.DpadLeft, 14); // D-Pad Left
+                                    MAP_BUTTON(ImGui.NavInput.DpadRight, 15); // D-Pad Right
+                                    MAP_BUTTON(ImGui.NavInput.DpadUp, 12); // D-Pad Up
+                                    MAP_BUTTON(ImGui.NavInput.DpadDown, 13); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 6); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 7); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                            }
+                        }
+                    }
+                    ImGui.NewFrame();
+                    this.update(dt);
+                    ImGui.EndFrame();
+                    ImGui.Render();
+                    app.renderer.render(this.imgui, this.tex);
+                    this.surface.interactive = this.io.WantCaptureMouse;
+                }
+            };
+            exports_1("ImGuiWindow", ImGuiWindow);
+            canvas = null;
+            //export let gl: WebGL2RenderingContext | null = null;
+            g_ShaderHandle = null;
+            g_VertHandle = null;
+            g_FragHandle = null;
+            g_AttribLocationTex = null;
+            g_AttribLocationProjMtx = null;
+            g_AttribLocationPosition = -1;
+            g_AttribLocationUV = -1;
+            g_AttribLocationColor = -1;
+            g_VaoHandle = null;
+            g_VboHandle = null;
+            g_ElementsHandle = null;
+            g_FontTexture = null;
+            // MouseEvent.button
+            // A number representing a given button:
+            // 0: Main button pressed, usually the left button or the un-initialized state
+            // 1: Auxiliary button pressed, usually the wheel button or the middle button (if present)
+            // 2: Secondary button pressed, usually the right button
+            // 3: Fourth button, typically the Browser Back button
+            // 4: Fifth button, typically the Browser Forward button
+            mouse_button_map = [0, 2, 1, 3, 4];
+        }
+    };
+});
+//# sourceMappingURL=imgui_impl.js.map
\ No newline at end of file
diff --git a/src/imgui_impl.js.map b/src/imgui_impl.js.map
new file mode 100644
index 0000000..bcb545f
--- /dev/null
+++ b/src/imgui_impl.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/src/imgui_impl.ts b/src/imgui_impl.ts
new file mode 100644
index 0000000..a5dad20
--- /dev/null
+++ b/src/imgui_impl.ts
@@ -0,0 +1,797 @@
+import * as ImGui from "imgui-js";
+import { ImVec2 } from "imgui-js";
+import * as PIXI from "pixi.js";
+import * as U from "./utils";
+
+let clipboard_text: string = "";
+
+const contexts: ImGui.ImGuiContext[] = [];
+const contextIOs: ImGui.ImGuiIO[] = [];
+let isFirstWindow: boolean = true;
+
+class ImGuiImplInternalRenderer extends PIXI.ObjectRenderer
+{
+    constructor(r: PIXI.Renderer)
+    {
+        super(r);
+    }
+    render(owner: PIXI.DisplayObject): void
+    {
+        if (!(owner instanceof ImGuiWindowLayer)) return;
+
+        const window: ImGuiWindow = (owner as ImGuiWindowLayer).window;
+
+        const io: ImGui.ImGuiIO = window.io;
+        const draw_data: ImGui.ImDrawData = ImGui.GetDrawData();
+        if (draw_data === null) { throw new Error(); }
+
+        gl || console.log(draw_data);
+
+        // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+        const fb_width: number = io.DisplaySize.x * io.DisplayFramebufferScale.x;
+        const fb_height: number = io.DisplaySize.y * io.DisplayFramebufferScale.y;
+        if (fb_width === 0 || fb_height === 0) {
+            return;
+        }
+        draw_data.ScaleClipRects(io.DisplayFramebufferScale);
+
+        // Backup GL state
+        const last_program: WebGLProgram | null = gl && gl.getParameter(gl.CURRENT_PROGRAM) || null;
+        const last_active_texture: GLenum | null = gl && gl.getParameter(gl.ACTIVE_TEXTURE) || null;
+        gl && gl.activeTexture(gl.TEXTURE0);
+        const last_texture0: WebGLTexture | null = gl && gl.getParameter(gl.TEXTURE_BINDING_2D) || null;
+        const last_vertex_array: WebGLVertexArrayObject | null = gl && gl.getParameter(gl.VERTEX_ARRAY_BINDING) || null;
+        const last_array_buffer: WebGLBuffer | null = gl && gl.getParameter(gl.ARRAY_BUFFER_BINDING) || null;
+        const last_element_array_buffer: WebGLBuffer | null = gl && gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING) || null;
+        // GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+        const last_viewport: Int32Array | null = gl && gl.getParameter(gl.VIEWPORT) || null;
+        const last_scissor_box: Int32Array | null = gl && gl.getParameter(gl.SCISSOR_BOX) || null;
+        const last_blend_src_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_SRC_RGB) || null;
+        const last_blend_dst_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_DST_RGB) || null;
+        const last_blend_src_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_SRC_ALPHA) || null;
+        const last_blend_dst_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_DST_ALPHA) || null;
+        const last_blend_equation_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_EQUATION_RGB) || null;
+        const last_blend_equation_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_EQUATION_ALPHA) || null;
+        const last_enable_blend: GLboolean | null = gl && gl.getParameter(gl.BLEND) || null;
+        const last_enable_cull_face: GLboolean | null = gl && gl.getParameter(gl.CULL_FACE) || null;
+        const last_enable_depth_test: GLboolean | null = gl && gl.getParameter(gl.DEPTH_TEST) || null;
+        const last_enable_scissor_test: GLboolean | null = gl && gl.getParameter(gl.SCISSOR_TEST) || null;
+
+        gl.clearColor(0, 0, 0, 0);
+        gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+        
+        gl && gl.bindVertexArray(g_VaoHandle);
+
+        // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
+        gl && gl.enable(gl.BLEND);
+        gl && gl.blendEquation(gl.FUNC_ADD);
+        gl && gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE);
+        gl && gl.disable(gl.CULL_FACE);
+        gl && gl.disable(gl.DEPTH_TEST);
+        gl && gl.enable(gl.SCISSOR_TEST);
+        // glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+
+        // Setup viewport, orthographic projection matrix
+        // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+        gl && gl.viewport(0, 0, fb_width, fb_height);
+        const L: number = draw_data.DisplayPos.x;
+        const R: number = draw_data.DisplayPos.x + draw_data.DisplaySize.x;
+        const T: number = draw_data.DisplayPos.y;
+        const B: number = draw_data.DisplayPos.y + draw_data.DisplaySize.y;
+        // we actually flip the bottom and top here to match with PIXI's texture usage
+        const ortho_projection: Float32Array = new Float32Array([
+            2.0 / (R - L),     0.0,                0.0, 0.0,
+            0.0,               2.0 / (B - T),      0.0, 0.0,
+            0.0,               0.0,               -1.0, 0.0,
+            (R + L) / (L - R), (B + T) / (T - B),  0.0, 1.0,
+        ]);
+        gl && gl.useProgram(g_ShaderHandle);
+        gl && gl.uniform1i(g_AttribLocationTex, 0);
+        gl && g_AttribLocationProjMtx && gl.uniformMatrix4fv(g_AttribLocationProjMtx, false, ortho_projection);
+
+        // Render command lists
+        gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+        gl && gl.enableVertexAttribArray(g_AttribLocationPosition);
+        gl && gl.enableVertexAttribArray(g_AttribLocationUV);
+        gl && gl.enableVertexAttribArray(g_AttribLocationColor);
+
+        gl && gl.vertexAttribPointer(g_AttribLocationPosition, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertPosOffset);
+        gl && gl.vertexAttribPointer(g_AttribLocationUV, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertUVOffset);
+        gl && gl.vertexAttribPointer(g_AttribLocationColor, 4, gl.UNSIGNED_BYTE, true, ImGui.ImDrawVertSize, ImGui.ImDrawVertColOffset);
+
+        // Draw
+        const pos = draw_data.DisplayPos;
+        const idx_buffer_type: GLenum = gl && ((ImGui.ImDrawIdxSize === 4) ? gl.UNSIGNED_INT : gl.UNSIGNED_SHORT) || 0;
+        draw_data.IterateDrawLists((draw_list: ImGui.ImDrawList): void => {
+            gl || console.log(draw_list);
+            gl || console.log("VtxBuffer.length", draw_list.VtxBuffer.length);
+            gl || console.log("IdxBuffer.length", draw_list.IdxBuffer.length);
+            
+            let idx_buffer_offset: number = 0;
+
+            gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+            gl && gl.bufferData(gl.ARRAY_BUFFER, draw_list.VtxBuffer, gl.STREAM_DRAW);
+            gl && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+            gl && gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, draw_list.IdxBuffer, gl.STREAM_DRAW);
+
+            draw_list.IterateDrawCmds((draw_cmd: ImGui.ImDrawCmd): void => {
+                gl || console.log(draw_cmd);
+                gl || console.log("ElemCount", draw_cmd.ElemCount);
+                gl || console.log("ClipRect", draw_cmd.ClipRect.x, draw_cmd.ClipRect.y, draw_cmd.ClipRect.z - draw_cmd.ClipRect.x, draw_cmd.ClipRect.w - draw_cmd.ClipRect.y);
+                gl || console.log("TextureId", draw_cmd.TextureId);
+                if (!gl) {
+                    console.log("i: pos.x pos.y uv.x uv.y col");
+                    for (let i = 0; i < Math.min(3, draw_cmd.ElemCount); ++i) {
+                        const view: ImGui.ImDrawVert = new ImGui.ImDrawVert(draw_list.VtxBuffer.buffer, draw_list.VtxBuffer.byteOffset + i * ImGui.ImDrawVertSize);
+                        console.log(`${i}: ${view.pos[0].toFixed(2)} ${view.pos[1].toFixed(2)} ${view.uv[0].toFixed(5)} ${view.uv[1].toFixed(5)} ${("00000000" + view.col[0].toString(16)).substr(-8)}`);
+                    }
+                }
+
+                if (draw_cmd.UserCallback !== null) {
+                    // User callback (registered via ImDrawList::AddCallback)
+                    draw_cmd.UserCallback(draw_list, draw_cmd);
+                } else {
+                    const clip_rect = new ImGui.ImVec4(draw_cmd.ClipRect.x - pos.x, draw_cmd.ClipRect.y - pos.y, draw_cmd.ClipRect.z - pos.x, draw_cmd.ClipRect.w - pos.y);
+                    if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0 && clip_rect.w >= 0.0) {
+                        // Apply scissor/clipping rectangle
+                        gl && gl.scissor(clip_rect.x, clip_rect.y, clip_rect.z - clip_rect.x, clip_rect.w - clip_rect.y);
+
+                        // Bind texture, Draw
+                        gl && gl.bindTexture(gl.TEXTURE_2D, draw_cmd.TextureId);
+                        gl && gl.drawElements(gl.TRIANGLES, draw_cmd.ElemCount, idx_buffer_type, idx_buffer_offset);
+                    }
+                }
+
+                idx_buffer_offset += draw_cmd.ElemCount * ImGui.ImDrawIdxSize;
+            });
+        });
+
+        // Restore modified GL state
+        
+        gl && (last_program !== null) && gl.useProgram(last_program);
+        gl && (last_texture0 !== null) && gl.bindTexture(gl.TEXTURE_2D, last_texture0);
+        gl && (last_active_texture !== null) && gl.activeTexture(last_active_texture);
+        gl && gl.disableVertexAttribArray(g_AttribLocationPosition);
+        gl && gl.disableVertexAttribArray(g_AttribLocationUV);
+        gl && gl.disableVertexAttribArray(g_AttribLocationColor);
+        gl && (last_vertex_array !== null) && gl.bindVertexArray(last_vertex_array);
+        gl && (last_array_buffer !== null) && gl.bindBuffer(gl.ARRAY_BUFFER, last_array_buffer);
+        gl && (last_element_array_buffer !== null) && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+        gl && (last_viewport !== null) && gl.viewport(last_viewport[0], last_viewport[1], last_viewport[2], last_viewport[3]);
+        gl && (last_scissor_box !== null) && gl.scissor(last_scissor_box[0], last_scissor_box[1], last_scissor_box[2], last_scissor_box[3]);
+        gl && (last_blend_equation_rgb !== null && last_blend_equation_alpha !== null) && gl.blendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+        gl && (last_blend_src_rgb !== null && last_blend_src_alpha !== null && last_blend_dst_rgb !== null && last_blend_dst_alpha !== null) && gl.blendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
+        gl && (last_enable_blend ? gl.enable(gl.BLEND) : gl.disable(gl.BLEND));
+        gl && (last_enable_cull_face ? gl.enable(gl.CULL_FACE) : gl.disable(gl.CULL_FACE));
+        gl && (last_enable_depth_test ? gl.enable(gl.DEPTH_TEST) : gl.disable(gl.DEPTH_TEST));
+        gl && (last_enable_scissor_test ? gl.enable(gl.SCISSOR_TEST) : gl.disable(gl.SCISSOR_TEST));
+        // glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
+    }
+}
+
+let gl: WebGL2RenderingContext = null;
+let app: PIXI.Application = null;
+
+class ImGuiWindowLayer extends PIXI.Sprite
+{
+    public readonly window: ImGuiWindow;
+    constructor(window: ImGuiWindow, tex:PIXI.RenderTexture)
+    {
+        super();
+        this.pluginName = "imgui_renderer";
+        this.window = window;
+    }
+}
+
+export class ImGuiWindow extends PIXI.Container
+{
+    public readonly ctx: ImGui.ImGuiContext;
+    public readonly io: ImGui.ImGuiIO;
+    private sizeX: number;
+    private sizeY: number;
+    public getSizeX(): number { return this.sizeX; }
+    public getSizeY(): number { return this.sizeY; }
+
+    private baseTex: PIXI.BaseRenderTexture = new PIXI.BaseRenderTexture({scaleMode: PIXI.SCALE_MODES.LINEAR, resolution: 1, type: PIXI.TYPES.FLOAT, format: PIXI.FORMATS.RGBA});
+    private tex: PIXI.RenderTexture = new PIXI.RenderTexture(this.baseTex);
+    
+    private surface: PIXI.Sprite = new PIXI.Sprite(this.tex);
+    private imgui: ImGuiWindowLayer = new ImGuiWindowLayer(this, this.tex);
+    
+    private update: (dt: number) => void;
+    constructor(sizeX: number, sizeY: number, update: (dt: number) => void)
+    {
+        super();
+
+        this.ctx = ImGui.CreateContext(contextIOs.length == 0 ? null : contextIOs[0].Fonts);
+        ImGui.SetCurrentContext(this.ctx);
+        this.io = ImGui.GetIO();
+
+        contexts.push(this.ctx);
+        contextIOs.push(this.io);
+
+        if (contexts.length == 1)
+        {
+            CreateFontsTexture();
+        }
+
+        if (typeof(window) !== "undefined") {
+            ImGui.LoadIniSettingsFromMemory(window.localStorage.getItem("imgui.ini") || "");
+        }
+
+        if (typeof(navigator) !== "undefined") {
+            this.io.ConfigMacOSXBehaviors = navigator.platform.match(/Mac/) !== null;
+        }
+
+        this.io.SetClipboardTextFn = (user_data: any, text: string): void => {
+            clipboard_text = text;
+            // console.log(`set clipboard_text: "${clipboard_text}"`);
+            if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+                // console.log(`clipboard.writeText: "${clipboard_text}"`);
+                (navigator as any).clipboard.writeText(clipboard_text).then((): void => {
+                    // console.log(`clipboard.writeText: "${clipboard_text}" done.`);
+                });
+            }
+        };
+        this.io.GetClipboardTextFn = (user_data: any): string => {
+            // if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+            //     console.log(`clipboard.readText: "${clipboard_text}"`);
+            //     (navigator as any).clipboard.readText().then((text: string): void => {
+            //         clipboard_text = text;
+            //         console.log(`clipboard.readText: "${clipboard_text}" done.`);
+            //     });
+            // }
+            // console.log(`get clipboard_text: "${clipboard_text}"`);
+            return clipboard_text;
+        };
+        this.io.ClipboardUserData = null;
+
+        // Setup back-end capabilities flags
+        this.io.BackendFlags |= ImGui.BackendFlags.HasMouseCursors;   // We can honor GetMouseCursor() values (optional)
+
+        // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+        this.io.KeyMap[ImGui.Key.Tab] = 9;
+        this.io.KeyMap[ImGui.Key.LeftArrow] = 37;
+        this.io.KeyMap[ImGui.Key.RightArrow] = 39;
+        this.io.KeyMap[ImGui.Key.UpArrow] = 38;
+        this.io.KeyMap[ImGui.Key.DownArrow] = 40;
+        this.io.KeyMap[ImGui.Key.PageUp] = 33;
+        this.io.KeyMap[ImGui.Key.PageDown] = 34;
+        this.io.KeyMap[ImGui.Key.Home] = 36;
+        this.io.KeyMap[ImGui.Key.End] = 35;
+        this.io.KeyMap[ImGui.Key.Insert] = 45;
+        this.io.KeyMap[ImGui.Key.Delete] = 46;
+        this.io.KeyMap[ImGui.Key.Backspace] = 8;
+        this.io.KeyMap[ImGui.Key.Space] = 32;
+        this.io.KeyMap[ImGui.Key.Enter] = 13;
+        this.io.KeyMap[ImGui.Key.Escape] = 27;
+        this.io.KeyMap[ImGui.Key.A] = 65;
+        this.io.KeyMap[ImGui.Key.C] = 67;
+        this.io.KeyMap[ImGui.Key.V] = 86;
+        this.io.KeyMap[ImGui.Key.X] = 88;
+        this.io.KeyMap[ImGui.Key.Y] = 89;
+        this.io.KeyMap[ImGui.Key.Z] = 90;
+
+        this.update = update;
+        this.resize(sizeX, sizeY);
+        this.imgui.pluginName = 'imgui_renderer';
+        this.addChild(this.surface);
+        app.renderer.plugins.interaction.addListener("mousedown", this.mouseDown.bind(this));
+        app.renderer.plugins.interaction.addListener("mouseup", this.mouseUp.bind(this));
+        app.ticker.add(this.updateInternal.bind(this));
+
+        this.interactive = false;
+        this.interactiveChildren = true;
+
+        this.surface.interactive = false;
+    }
+    withContext(cb: () => void)
+    {
+        ImGui.SetCurrentContext(this.ctx);
+        cb();
+    }
+    mouseDown(e: PIXI.interaction.InteractionEvent): void
+    {
+        if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface)
+        {
+            this.io.MouseDown[mouse_button_map[0]] = true;
+        }
+    }
+    mouseUp(e: PIXI.interaction.InteractionEvent): void
+    {
+        if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface)
+        {
+            this.io.MouseDown[mouse_button_map[0]] = false;
+        }
+    }
+    resize(sizeX: number, sizeY: number)
+    {
+        this.sizeX = sizeX;
+        this.sizeY = sizeY;
+        this.baseTex.resize(sizeX, sizeY);
+        this.tex.frame = new PIXI.Rectangle(0, 0, this.baseTex.width, this.baseTex.height);
+    }
+    updateInternal(deltaTime: number)
+    {
+        const dt: number = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+
+        ImGui.SetCurrentContext(this.ctx);
+
+        if (this.io.WantSaveIniSettings) {
+            this.io.WantSaveIniSettings = false;
+            if (typeof(window) !== "undefined") {
+                window.localStorage.setItem("imgui.ini", ImGui.SaveIniSettingsToMemory());
+            }
+        }
+
+        this.io.DisplaySize.x = this.sizeX;
+        this.io.DisplaySize.y = this.sizeY;
+        this.io.DisplayFramebufferScale.x = 1;
+        this.io.DisplayFramebufferScale.y = 1;
+
+        this.io.DeltaTime = dt;
+
+        let localPos: PIXI.Point = this.toLocal(app.renderer.plugins.interaction.mouse.global);
+        if (localPos.x < 0 || localPos.y < 0 || localPos.x >= this.sizeX || localPos.y >= this.sizeY)
+        {
+            localPos = new PIXI.Point(-Number.MAX_VALUE, -Number.MAX_VALUE);
+        }
+        this.io.MousePos.x = localPos.x;
+        this.io.MousePos.y = localPos.y;
+
+        if (this.io.WantSetMousePos) {
+            console.log("TODO: MousePos", this.io.MousePos.x, this.io.MousePos.y);
+        }
+
+        if (typeof(document) !== "undefined") {
+            if (this.io.MouseDrawCursor) {
+                document.body.style.cursor = "none";
+            } else {
+                switch (ImGui.GetMouseCursor()) {
+                    case ImGui.MouseCursor.None: document.body.style.cursor = "none"; break;
+                    default: case ImGui.MouseCursor.Arrow: document.body.style.cursor = "default"; break;
+                    case ImGui.MouseCursor.TextInput: document.body.style.cursor = "text"; break;         // When hovering over InputText, etc.
+                    case ImGui.MouseCursor.ResizeAll: document.body.style.cursor = "move"; break;         // Unused
+                    case ImGui.MouseCursor.ResizeNS: document.body.style.cursor = "ns-resize"; break;     // When hovering over an horizontal border
+                    case ImGui.MouseCursor.ResizeEW: document.body.style.cursor = "ew-resize"; break;     // When hovering over a vertical border or a column
+                    case ImGui.MouseCursor.ResizeNESW: document.body.style.cursor = "nesw-resize"; break; // When hovering over the bottom-left corner of a window
+                    case ImGui.MouseCursor.ResizeNWSE: document.body.style.cursor = "nwse-resize"; break; // When hovering over the bottom-right corner of a window
+                    case ImGui.MouseCursor.Hand: document.body.style.cursor = "move"; break;
+                }
+            }
+        }
+
+        // Gamepad navigation mapping [BETA]
+        for (let i = 0; i < this.io.NavInputs.length; ++i) {
+            this.io.NavInputs[i] = 0.0;
+        }
+        if (this.io.ConfigFlags & ImGui.ConfigFlags.NavEnableGamepad) {
+            // Update gamepad inputs
+            const gamepads: (Gamepad | null)[] = (typeof(navigator) !== "undefined" && typeof(navigator.getGamepads) === "function") ? navigator.getGamepads() : [];
+            for (let i = 0; i < gamepads.length; ++i) {
+                const gamepad: Gamepad | null = gamepads[i];
+                if (!gamepad) { continue; }
+                const buttons_count: number = gamepad.buttons.length;
+                const axes_count: number = gamepad.axes.length;
+                const MAP_BUTTON = function(NAV_NO: number, BUTTON_NO: number): void {
+                    if (!gamepad) { return; }
+                    if (buttons_count > BUTTON_NO && gamepad.buttons[BUTTON_NO].pressed)
+                        this.io.NavInputs[NAV_NO] = 1.0;
+                }
+                const MAP_ANALOG = function(NAV_NO: number, AXIS_NO: number, V0: number, V1: number): void {
+                    if (!gamepad) { return; }
+                    let v: number = (axes_count > AXIS_NO) ? gamepad.axes[AXIS_NO] : V0;
+                    v = (v - V0) / (V1 - V0);
+                    if (v > 1.0) v = 1.0;
+                    if (this.io.NavInputs[NAV_NO] < v) this.io.NavInputs[NAV_NO] = v;
+                }
+                // TODO: map input based on vendor and product id
+                // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/id
+                const match: RegExpMatchArray | null = gamepad.id.match(/^([0-9a-f]{4})-([0-9a-f]{4})-.*$/);
+                const match_chrome: RegExpMatchArray | null = gamepad.id.match(/^.*\(.*Vendor: ([0-9a-f]{4}) Product: ([0-9a-f]{4})\).*$/);
+                const vendor: string = (match && match[1]) || (match_chrome && match_chrome[1]) || "0000";
+                const product: string = (match && match[2]) || (match_chrome && match_chrome[2]) || "0000";
+                switch (vendor + product) {
+                    case "046dc216": // Logitech Logitech Dual Action (Vendor: 046d Product: c216)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    1); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      2); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        0); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_ANALOG(ImGui.NavInput.DpadLeft,    4, -0.3, -0.9); // D-Pad Left
+                    MAP_ANALOG(ImGui.NavInput.DpadRight,   4, +0.3, +0.9); // D-Pad Right
+                    MAP_ANALOG(ImGui.NavInput.DpadUp,      5, -0.3, -0.9); // D-Pad Up
+                    MAP_ANALOG(ImGui.NavInput.DpadDown,    5, +0.3, +0.9); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   6); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   7); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    case "046dc21d": // Logitech Gamepad F310 (STANDARD GAMEPAD Vendor: 046d Product: c21d)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    0); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      1); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        2); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_BUTTON(ImGui.NavInput.DpadLeft,    14); // D-Pad Left
+                    MAP_BUTTON(ImGui.NavInput.DpadRight,   15); // D-Pad Right
+                    MAP_BUTTON(ImGui.NavInput.DpadUp,      12); // D-Pad Up
+                    MAP_BUTTON(ImGui.NavInput.DpadDown,    13); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_ANALOG(ImGui.NavInput.TweakSlow,   6, +0.3, +0.9); // L2 / LT
+                    MAP_ANALOG(ImGui.NavInput.TweakFast,   7, +0.3, +0.9); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    case "2dc86001": // 8Bitdo SN30 Pro  8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6001)
+                    case "2dc86101": // 8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6101)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    1); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      0); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        4); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_ANALOG(ImGui.NavInput.DpadLeft,    6, -0.3, -0.9); // D-Pad Left
+                    MAP_ANALOG(ImGui.NavInput.DpadRight,   6, +0.3, +0.9); // D-Pad Right
+                    MAP_ANALOG(ImGui.NavInput.DpadUp,      7, -0.3, -0.9); // D-Pad Up
+                    MAP_ANALOG(ImGui.NavInput.DpadDown,    7, +0.3, +0.9); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   6); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   7); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   8); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   9); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    default: // standard gamepad: https://w3c.github.io/gamepad/#remapping
+                    MAP_BUTTON(ImGui.NavInput.Activate,    0); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      1); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        2); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_BUTTON(ImGui.NavInput.DpadLeft,    14); // D-Pad Left
+                    MAP_BUTTON(ImGui.NavInput.DpadRight,   15); // D-Pad Right
+                    MAP_BUTTON(ImGui.NavInput.DpadUp,      12); // D-Pad Up
+                    MAP_BUTTON(ImGui.NavInput.DpadDown,    13); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   6); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   7); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                }
+            }
+        }
+
+        ImGui.NewFrame();
+
+        this.update(dt);
+
+        ImGui.EndFrame();
+        ImGui.Render();
+
+        app.renderer.render(this.imgui, this.tex);
+
+        this.surface.interactive = this.io.WantCaptureMouse;
+    }
+}
+
+let canvas: HTMLCanvasElement | null = null;
+
+//export let gl: WebGL2RenderingContext | null = null;
+let g_ShaderHandle: WebGLProgram | null = null;
+let g_VertHandle: WebGLShader | null = null;
+let g_FragHandle: WebGLShader | null = null;
+let g_AttribLocationTex: WebGLUniformLocation | null = null;
+let g_AttribLocationProjMtx: WebGLUniformLocation | null = null;
+let g_AttribLocationPosition: GLint = -1;
+let g_AttribLocationUV: GLint = -1;
+let g_AttribLocationColor: GLint = -1;
+let g_VaoHandle: WebGLVertexArrayObject = null;
+let g_VboHandle: WebGLBuffer | null = null;
+let g_ElementsHandle: WebGLBuffer | null = null;
+let g_FontTexture: WebGLTexture | null = null;
+
+function document_on_copy(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        event.clipboardData.setData("text/plain", clipboard_text);
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function document_on_cut(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        event.clipboardData.setData("text/plain", clipboard_text);
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function document_on_paste(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        clipboard_text = event.clipboardData.getData("text/plain");
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function window_on_gamepadconnected(event: any /* GamepadEvent */): void {
+    console.log("Gamepad connected at index %d: %s. %d buttons, %d axes.",
+    event.gamepad.index, event.gamepad.id,
+    event.gamepad.buttons.length, event.gamepad.axes.length);
+}
+
+function window_on_gamepaddisconnected(event: any /* GamepadEvent */): void {
+    console.log("Gamepad disconnected at index %d: %s.",
+    event.gamepad.index, event.gamepad.id);
+}
+
+function canvas_on_blur(event: FocusEvent): void {
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = false;
+        io.KeyShift = false;
+        io.KeyAlt = false;
+        io.KeySuper = false;
+        for (let i = 0; i < io.KeysDown.length; ++i) {
+            io.KeysDown[i] = false;
+        }
+        for (let i = 0; i < io.MouseDown.length; ++i) {
+            io.MouseDown[i] = false;
+        }
+    }
+}
+
+function canvas_on_keydown(event: KeyboardEvent): void {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = event.ctrlKey;
+        io.KeyShift = event.shiftKey;
+        io.KeyAlt = event.altKey;
+        io.KeySuper = event.metaKey;
+        ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+        io.KeysDown[event.keyCode] = true;
+        // forward to the keypress event
+        if (/*io.WantCaptureKeyboard ||*/ event.key === "Tab") {
+            event.preventDefault();
+        }
+    }
+}
+
+function canvas_on_keyup(event: KeyboardEvent): void  {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = event.ctrlKey;
+        io.KeyShift = event.shiftKey;
+        io.KeyAlt = event.altKey;
+        io.KeySuper = event.metaKey;
+        ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+        io.KeysDown[event.keyCode] = false;
+        if (io.WantCaptureKeyboard) {
+            event.preventDefault();
+        }
+    }
+}
+
+function canvas_on_keypress(event: KeyboardEvent): void  {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.AddInputCharacter(event.charCode);
+        if (io.WantCaptureKeyboard) {
+            event.preventDefault();
+        }
+    }
+}
+
+// MouseEvent.button
+// A number representing a given button:
+// 0: Main button pressed, usually the left button or the un-initialized state
+// 1: Auxiliary button pressed, usually the wheel button or the middle button (if present)
+// 2: Secondary button pressed, usually the right button
+// 3: Fourth button, typically the Browser Back button
+// 4: Fifth button, typically the Browser Forward button
+const mouse_button_map: number[] = [ 0, 2, 1, 3, 4 ];
+
+function canvas_on_contextmenu(event: Event): void  {
+    for (var io of contextIOs)
+    {
+        if (io.WantCaptureMouse) { event.preventDefault(); }
+    }
+}
+
+function canvas_on_wheel(event: WheelEvent): void  {
+    for (var io of contextIOs)
+    {
+        let scale: number = 1.0;
+        switch (event.deltaMode) {
+            case event.DOM_DELTA_PIXEL: scale = 0.01; break;
+            case event.DOM_DELTA_LINE: scale = 0.2; break;
+            case event.DOM_DELTA_PAGE: scale = 1.0; break;
+        }
+        io.MouseWheelH = event.deltaX * scale;
+        io.MouseWheel = -event.deltaY * scale; // Mouse wheel: 1 unit scrolls about 5 lines text.
+        if (io.WantCaptureMouse) {
+            event.preventDefault();
+        }
+    }
+}
+
+export function PrePIXIInit(): void
+{
+    PIXI.Renderer.registerPlugin("imgui_renderer", U.fromConstructor(ImGuiImplInternalRenderer));
+}
+
+export function Init(_app: PIXI.Application): void {
+    // Setup Dear ImGui binding
+    ImGui.IMGUI_CHECKVERSION();
+
+    if (typeof(document) !== "undefined") {
+        document.body.addEventListener("copy", document_on_copy);
+        document.body.addEventListener("cut", document_on_cut);
+        document.body.addEventListener("paste", document_on_paste);
+    }
+
+    if (typeof(window) !== "undefined") {
+        window.addEventListener("gamepadconnected", window_on_gamepadconnected);
+        window.addEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+    }
+
+    app = _app;
+    gl = (app.renderer as any).gl;
+    canvas = app.view;
+
+    gl.getExtension("EXT_color_buffer_float");
+
+    if (canvas !== null) {
+        canvas.style.touchAction = "none"; // Disable browser handling of all panning and zooming gestures.
+        canvas.addEventListener("blur", canvas_on_blur);
+        canvas.addEventListener("keydown", canvas_on_keydown);
+        canvas.addEventListener("keyup", canvas_on_keyup);
+        canvas.addEventListener("keypress", canvas_on_keypress);
+        canvas.addEventListener("contextmenu", canvas_on_contextmenu);
+        canvas.addEventListener("wheel", canvas_on_wheel);
+    }
+
+    CreateDeviceObjects();
+}
+
+export function Shutdown(): void {
+    DestroyDeviceObjects();
+
+    if (canvas !== null) {
+        canvas.removeEventListener("blur", canvas_on_blur);
+        canvas.removeEventListener("keydown", canvas_on_keydown);
+        canvas.removeEventListener("keyup", canvas_on_keyup);
+        canvas.removeEventListener("keypress", canvas_on_keypress);
+        canvas.removeEventListener("contextmenu", canvas_on_contextmenu);
+        canvas.removeEventListener("wheel", canvas_on_wheel);
+    }
+
+    app = null;
+    canvas = null;
+
+    if (typeof(window) !== "undefined") {
+        window.removeEventListener("gamepadconnected", window_on_gamepadconnected);
+        window.removeEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+    }
+
+    if (typeof(document) !== "undefined") {
+        document.body.removeEventListener("copy", document_on_copy);
+        document.body.removeEventListener("cut", document_on_cut);
+        document.body.removeEventListener("paste", document_on_paste);
+    }
+}
+
+function CreateFontsTexture(): void {
+    const io = ImGui.GetIO();
+
+    // Backup GL state
+    const last_texture: WebGLTexture | null = gl && gl.getParameter(gl.TEXTURE_BINDING_2D);
+
+    // Build texture atlas
+    // const width: number = 256;
+    // const height: number = 256;
+    // const pixels: Uint8Array = new Uint8Array(4 * width * height).fill(0xff);
+    const { width, height, pixels } = io.Fonts.GetTexDataAsRGBA32();   // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+    // console.log(`font texture ${width} x ${height} @ ${pixels.length}`);
+
+    // Upload texture to graphics system
+    g_FontTexture = gl && gl.createTexture();
+    gl && gl.bindTexture(gl.TEXTURE_2D, g_FontTexture);
+    gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+    gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+    // gl && gl.pixelStorei(gl.UNPACK_ROW_LENGTH); // WebGL2
+    gl && gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+
+    // Store our identifier
+    io.Fonts.TexID = g_FontTexture || { foo: "bar" };
+    // console.log("font texture id", g_FontTexture);
+
+    // Restore modified GL state
+    gl && last_texture && gl.bindTexture(gl.TEXTURE_2D, last_texture);
+}
+
+function DestroyFontsTexture(): void {
+    const io = ImGui.GetIO();
+    io.Fonts.TexID = null;
+    gl && gl.deleteTexture(g_FontTexture); g_FontTexture = null;
+}
+
+function CreateDeviceObjects(): void {
+    const vertex_shader: string[] = [
+        "#version 300 es",
+        "uniform mat4 ProjMtx;",
+        "in vec2 Position;",
+        "in vec2 UV;",
+        "in vec4 Color;",
+        "out vec2 Frag_UV;",
+        "out vec4 Frag_Color;",
+        "void main() {",
+        "	Frag_UV = UV;",
+        "	Frag_Color = Color;",
+        "	gl_Position = ProjMtx * vec4(Position.xy,0,1);",
+        "}",
+    ];
+
+    const fragment_shader: string[] = [
+        "#version 300 es",
+        "precision mediump float;", // WebGL requires precision specifiers
+        "uniform sampler2D Texture;",
+        "in vec2 Frag_UV;",
+        "in vec4 Frag_Color;",
+        "out vec4 OutColor;",
+        "void main() {",
+        "	OutColor = Frag_Color * texture(Texture, Frag_UV);",
+        "}",
+    ];
+
+    g_ShaderHandle = gl && gl.createProgram();
+    g_VertHandle = gl && gl.createShader(gl.VERTEX_SHADER);
+    g_FragHandle = gl && gl.createShader(gl.FRAGMENT_SHADER);
+    gl && gl.shaderSource(g_VertHandle as WebGLShader, vertex_shader.join("\n"));
+    gl && gl.shaderSource(g_FragHandle as WebGLShader, fragment_shader.join("\n"));
+    gl && gl.compileShader(g_VertHandle as WebGLShader);
+    gl && gl.compileShader(g_FragHandle as WebGLShader);
+    gl && gl.attachShader(g_ShaderHandle as WebGLProgram, g_VertHandle as WebGLShader);
+    gl && gl.attachShader(g_ShaderHandle as WebGLProgram, g_FragHandle as WebGLShader);
+    gl && gl.linkProgram(g_ShaderHandle as WebGLProgram);
+
+    g_AttribLocationTex = gl && gl.getUniformLocation(g_ShaderHandle as WebGLProgram, "Texture");
+    g_AttribLocationProjMtx = gl && gl.getUniformLocation(g_ShaderHandle as WebGLProgram, "ProjMtx");
+    g_AttribLocationPosition = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "Position") || 0;
+    g_AttribLocationUV = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "UV") || 0;
+    g_AttribLocationColor = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "Color") || 0;
+
+    g_VaoHandle = gl && gl.createVertexArray();
+    g_VboHandle = gl && gl.createBuffer();
+    g_ElementsHandle = gl && gl.createBuffer();
+
+}
+
+function DestroyDeviceObjects(): void {
+    DestroyFontsTexture();
+
+    gl && gl.deleteVertexArray(g_VaoHandle); g_VaoHandle = null;
+    gl && gl.deleteBuffer(g_VboHandle); g_VboHandle = null;
+    gl && gl.deleteBuffer(g_ElementsHandle); g_ElementsHandle = null;
+
+    g_AttribLocationTex = null;
+    g_AttribLocationProjMtx = null;
+    g_AttribLocationPosition = -1;
+    g_AttribLocationUV = -1;
+    g_AttribLocationColor = -1;
+
+    gl && gl.deleteProgram(g_ShaderHandle); g_ShaderHandle = null;
+    gl && gl.deleteShader(g_VertHandle); g_VertHandle = null;
+    gl && gl.deleteShader(g_FragHandle); g_FragHandle = null;
+}
diff --git a/src/main.js b/src/main.js
index f763140..0c19249 100644
--- a/src/main.js
+++ b/src/main.js
@@ -1,4 +1,4 @@
-System.register(["../imgui-js/example/imgui_impl", "imgui-js"], function (exports_1, context_1) {
+System.register(["./imgui_impl", "imgui-js", "pixi.js", "./utils"], function (exports_1, context_1) {
     "use strict";
     var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
         return new (P || (P = Promise))(function (resolve, reject) {
@@ -8,7 +8,7 @@
             step((generator = generator.apply(thisArg, _arguments || [])).next());
         });
     };
-    var ImGui_Impl, ImGui, imgui_js_1, imgui_js_2, clearColor, windowOpen, text;
+    var ImGui_Impl, imgui_impl_1, ImGui, imgui_js_1, imgui_js_2, PIXI, U, clearColor;
     var __moduleName = context_1 && context_1.id;
     function main() {
         return __awaiter(this, void 0, void 0, function* () {
@@ -20,74 +20,88 @@
     function init() {
         console.log("init()");
         console.log("Total allocated space (uordblks) @ _init:", ImGui.bind.mallinfo().uordblks);
-        // Setup Dear ImGui binding
-        ImGui.IMGUI_CHECKVERSION();
-        ImGui.CreateContext();
-        const io = ImGui.GetIO();
-        io.ConfigFlags |= ImGui.ConfigFlags.NavEnableKeyboard; // Enable Keyboard Controls
-        // Setup style
-        ImGui.StyleColorsLight();
+        ImGui_Impl.PrePIXIInit();
+        let settings = { width: 1, height: 1, antialias: true, backgroundColor: U.vec2col(clearColor) };
+        let app = new PIXI.Application(settings);
         const output = document.getElementById("output") || document.body;
-        const canvas = document.createElement("canvas");
-        output.appendChild(canvas);
-        canvas.tabIndex = 1;
-        canvas.style.position = "absolute";
-        canvas.style.left = "0px";
-        canvas.style.right = "0px";
-        canvas.style.top = "0px";
-        canvas.style.bottom = "0px";
-        canvas.style.width = "100%";
-        canvas.style.height = "100%";
-        ImGui_Impl.Init(canvas);
-        window.requestAnimationFrame(loop);
+        output.appendChild(app.view);
+        app.view.tabIndex = 1;
+        app.view.style.position = "absolute";
+        app.view.style.left = "0px";
+        app.view.style.right = "0px";
+        app.view.style.top = "0px";
+        app.view.style.bottom = "0px";
+        app.view.style.width = "100%";
+        app.view.style.height = "100%";
+        ImGui_Impl.Init(app);
+        app.ticker.add((deltaTime) => {
+            const dt = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+            app.render();
+        });
+        let resizeFunc = function () {
+            app.renderer.resize(window.innerWidth, window.innerHeight);
+        };
+        let bg = new PIXI.Graphics();
+        bg.beginFill(0xFF0000);
+        bg.drawRect(100, 100, 300, 300);
+        bg.endFill();
+        let styleCb = () => { ImGui.StyleColorsLight(); };
+        const imgui = new imgui_impl_1.ImGuiWindow(512, 512, makeUpdate());
+        const imgui2 = new imgui_impl_1.ImGuiWindow(512, 512, makeUpdate2());
+        imgui2.x = 200;
+        imgui2.y = 400;
+        imgui.withContext(styleCb);
+        imgui2.withContext(styleCb);
+        app.stage.addChild(imgui);
+        app.stage.addChild(bg);
+        app.stage.addChild(imgui2);
+        window.onresize = resizeFunc;
+        resizeFunc();
     }
-    function render(timeElapsed) {
-        ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(600, 400), ImGui.ImGuiCond.Always);
-        ImGui.Begin("Test Window", (_ = windowOpen) => windowOpen = _, 0);
-        if (ImGui.Button("Add Text")) {
-            text += "A";
-        }
-        ImGui.Text(text);
-        ImGui.End();
+    function makeUpdate() {
+        let text = "text";
+        return (timeElapsed) => {
+            ImGui.SetNextWindowPos(new imgui_js_2.ImVec2(0, 0));
+            ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(500, 500), ImGui.ImGuiCond.Always);
+            ImGui.Begin("Test Window");
+            if (ImGui.Button("Add Text")) {
+                text += "A";
+            }
+            ImGui.Text(text);
+            ImGui.End();
+        };
     }
-    function loop(timeElapsed) {
-        ImGui_Impl.NewFrame(timeElapsed);
-        ImGui.NewFrame();
-        render(timeElapsed);
-        ImGui.EndFrame();
-        // Rendering
-        ImGui.Render();
-        const gl = ImGui_Impl.gl;
-        if (gl) {
-            gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
-            gl.clearColor(clearColor.x, clearColor.y, clearColor.z, clearColor.w);
-            gl.clear(gl.COLOR_BUFFER_BIT);
-            //gl.useProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound
-        }
-        const ctx = ImGui_Impl.ctx;
-        if (ctx) {
-            // ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-            ctx.fillStyle = `rgba(${clearColor.x * 0xff}, ${clearColor.y * 0xff}, ${clearColor.z * 0xff}, ${clearColor.w})`;
-            ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-        }
-        ImGui_Impl.RenderDrawData(ImGui.GetDrawData());
-        window.requestAnimationFrame(loop);
+    function makeUpdate2() {
+        let text = "";
+        return (timeElapsed) => {
+            ImGui.SetNextWindowPos(new imgui_js_2.ImVec2(0, 0));
+            ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(500, 500), ImGui.ImGuiCond.Always);
+            ImGui.Begin("Test Window 2");
+            ImGui.InputText("Input: ", (_ = text) => text = _);
+            ImGui.Text(text);
+            ImGui.End();
+        };
     }
     return {
         setters: [
             function (ImGui_Impl_1) {
                 ImGui_Impl = ImGui_Impl_1;
+                imgui_impl_1 = ImGui_Impl_1;
             },
             function (ImGui_1) {
                 ImGui = ImGui_1;
                 imgui_js_1 = ImGui_1;
                 imgui_js_2 = ImGui_1;
+            },
+            function (PIXI_1) {
+                PIXI = PIXI_1;
+            },
+            function (U_1) {
+                U = U_1;
             }
         ],
         execute: function () {
             clearColor = new imgui_js_1.ImVec4(0.7, 0.9, 1, 1);
-            windowOpen = true;
-            text = "text";
             (function () {
                 if (document.readyState == "complete") {
                     main();

diff --git a/.gitmodules b/.gitmodules
index d6b45d7..fc2be7a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,7 @@
 [submodule "emsdk"]
 	path = emsdk
 	url = https://github.com/emscripten-core/emsdk.git
+	ignore = untracked
+[submodule "pixi.js"]
+	path = pixi.js
+	url = https://git.mhack.io/git/mark/pixi.js.git
diff --git a/imgui-js b/imgui-js
index 9f694ef..9536eca 160000
--- a/imgui-js
+++ b/imgui-js
@@ -1 +1 @@
-Subproject commit 9f694ef7e8e7251c32f7811ba39938951a12097a
+Subproject commit 9536ecad287eb76812087cd3fee1aaacb448c027
diff --git a/indexdev.html b/indexdev.html
index 2f6c3b3..3d27479 100644
--- a/indexdev.html
+++ b/indexdev.html
@@ -2,22 +2,16 @@
     <head>
         <title>7GUI</title>
         <script src="node_modules/systemjs/dist/system.js"></script>
-        <!--
-        <script type="systemjs-importmap">
-            {
-                "imports": {
-                    "imgui-js/example/imgui_impl": "imgui-js/dist/imgui_impl.umd.js"
-                }
-            }
-        </script>
-        -->
         <script>
             System.config({
                 map: {
-                    "imgui-js": "./imgui-js"
+                    "imgui-js": "./imgui-js",
+                    "pixi.js": "./node_modules/pixi.js"
                 },
                 packages: {
-                    "imgui-js": { main: "imgui.js", }
+                    "imgui-js": { main: "imgui.js" },
+                    "pixi.js": { main: "dist/pixi.js" },
+                    "./": { map: { "src/utils": "./src/utils.js", "src/imgui_impl": "./src/imgui_impl.js" } }
                 }
             });
             System.import("./src/main.js");
diff --git a/package-lock.json b/package-lock.json
index ed52494..8bda7e5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,16 +4,34 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@pixi/constants": {
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+      "resolved": "https://registry.npmjs.org/@pixi/constants/-/constants-5.1.0.tgz",
+      "integrity": "sha512-86cogDvjF9yNvmxeizwkIhA0Kl2z3gUSWMf2daYx903dzyje7fwkzRrKLnqDUn6vSAxRXiska0DMJhwYsIC29w=="
+    },
+    "@pixi/math": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/math/-/math-5.1.0.tgz",
+      "integrity": "sha512-Vf9W4SgYRRQMdSq8tFViKKKGCU3iklf0RDzd+wzp4gezOxe3m0PLB7XKwvVrP1hRjUh49zIAL9JBpYREPS1EMw=="
+    },
+    "@pixi/polyfill": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/polyfill/-/polyfill-5.1.0.tgz",
+      "integrity": "sha512-8M3nYCO0a599fsdLW7wv9SBYriMqS1QckKAkRuN2JualRuK/GjxZjm5Vcbcwc1gGONRUKZroH12CuPyTcU2HnQ==",
+      "requires": {
+        "es6-promise-polyfill": "^1.2.0",
+        "object-assign": "^4.1.1"
+      }
+    },
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       "resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.39.tgz",
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-      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.0.7.tgz",
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-      "dev": true
+      "version": "12.6.8",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.6.8.tgz",
+      "integrity": "sha512-aX+gFgA5GHcDi89KG5keey2zf0WfZk/HAQotEamsK2kbey+8yGKcson0hbK8E+v0NArlCJQCqMP161YhV6ZXLg=="
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-      "integrity": "sha512-p3yv9sBBJXi3noUG216BpUI7VtVBUAvBIfZNTiDROUY31YBfsFHM4DreS7XMekN8IjtX0ysvCnm6r3WnirnNeA=="
+      "integrity": "sha512-p3yv9sBBJXi3noUG216BpUI7VtVBUAvBIfZNTiDROUY31YBfsFHM4DreS7XMekN8IjtX0ysvCnm6r3WnirnNeA==",
+      "dev": true
+    },
+    "@types/webgl2": {
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/@types/webgl2/-/webgl2-0.0.5.tgz",
+      "integrity": "sha512-oGaKsBbxQOY5+aJFV3KECDhGaXt+yZJt2y/OZsnQGLRkH6Fvr7rv4pCt3SRH1somIHfej/c4u7NSpCyd9x+1Ow=="
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@@ -57,9 +81,9 @@
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+      "version": "6.2.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.2.0.tgz",
+      "integrity": "sha512-8oe72N3WPMjA+2zVG71Ia0nXZ8DpQH+QyyHO+p06jT8eg8FGG3FbcUIi8KziHlAfheJQZeoqbvq1mQSQHXKYLw=="
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@@ -258,6 +282,12 @@
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+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
+          "dev": true
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@@ -485,12 +515,6 @@
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@@ -703,6 +717,11 @@
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+      "version": "2.1.5",
+      "resolved": "https://registry.npmjs.org/earcut/-/earcut-2.1.5.tgz",
+      "integrity": "sha512-QFWC7ywTVLtvRAJTVp8ugsuuGQ5mVqNmJ1cRYeLrSHgP3nycr2RHTJob9OtM0v8ujuoKN0NY1a93J/omeTL1PA=="
+    },
     "ee-first": {
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       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
@@ -739,6 +758,11 @@
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+    "es6-promise-polyfill": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/es6-promise-polyfill/-/es6-promise-polyfill-1.2.0.tgz",
+      "integrity": "sha1-84kl8jyz4+jObNqP93T867sJDN4="
+    },
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@@ -772,6 +796,11 @@
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+    "eventemitter3": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-3.1.2.tgz",
+      "integrity": "sha512-tvtQIeLVHjDkJYnzf2dgVMxfuSGJeM/7UCG17TT4EumTfNtF+0nebF/4zWOIkCreAbtNqhGEboB6BWrwqNaw4Q=="
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@@ -904,9 +933,9 @@
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-      "integrity": "sha1-8O/hjE9W5PQK/H4Gxxn9XuYYjzg=",
+      "version": "0.11.3",
+      "resolved": "https://registry.npmjs.org/faye-websocket/-/faye-websocket-0.11.3.tgz",
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@@ -1568,6 +1597,12 @@
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+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
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@@ -1599,9 +1634,9 @@
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+      "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.0.tgz",
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@@ -1680,22 +1715,22 @@
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+      "version": "1.7.3",
+      "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.7.3.tgz",
+      "integrity": "sha512-ZTTX0MWrsQ2ZAhA1cejAwDLycFsd7I7nVtnkT3Ol0aqodaKW+0CTZDQ1uBv5whptCnc8e8HeRRJxRs0kmm/Qfw==",
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         "depd": "~1.1.2",
-        "inherits": "2.0.3",
+        "inherits": "2.0.4",
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+      "version": "0.4.10",
+      "resolved": "https://registry.npmjs.org/http-parser-js/-/http-parser-js-0.4.10.tgz",
+      "integrity": "sha1-ksnBN0w1CF912zWexWzCV8u5P6Q=",
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@@ -3790,9 +3825,9 @@
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-      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
-      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
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@@ -3938,9 +3973,9 @@
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+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/is-reference/-/is-reference-1.1.3.tgz",
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@@ -3970,6 +4005,11 @@
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+    "ismobilejs": {
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+      "resolved": "https://registry.npmjs.org/ismobilejs/-/ismobilejs-0.5.2.tgz",
+      "integrity": "sha512-ta9UdV60xVZk/ZafFtSFslQaE76SvNkcs1r73d2PVR21zVzx9xuYv9tNe4MxA1NN7WoeCc2RjGot3Bz1eHDx3Q=="
+    },
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@@ -4019,6 +4059,12 @@
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+          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
+          "dev": true
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@@ -4166,6 +4212,12 @@
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@@ -4195,11 +4247,69 @@
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+          "dev": true
+        },
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+          "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
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+          "dev": true,
+          "requires": {
+            "object-assign": "^4",
+            "vary": "^1"
+          }
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+        "ms": {
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+        },
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+          "resolved": "https://registry.npmjs.org/opn/-/opn-6.0.0.tgz",
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+          "dev": true,
+          "requires": {
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+        "proxy-middleware": {
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+          "integrity": "sha1-o/3xvvtzD5UZZYcqwvYHTGFHelY=",
+          "dev": true
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+          "dev": true,
+          "requires": {
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+            "depd": "~1.1.2",
+            "destroy": "~1.0.4",
+            "encodeurl": "~1.0.2",
+            "escape-html": "~1.0.3",
+            "etag": "~1.8.1",
+            "fresh": "0.5.2",
+            "http-errors": "~1.7.2",
+            "mime": "1.6.0",
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+            "on-finished": "~2.3.0",
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+            "statuses": "~1.5.0"
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@@ -4210,9 +4320,9 @@
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@@ -4302,6 +4412,11 @@
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+      "resolved": "https://registry.npmjs.org/mini-signals/-/mini-signals-1.2.0.tgz",
+      "integrity": "sha1-RbCAE8X65RokqhqTXNMXye1yHXQ="
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+      "integrity": "sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM="
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@@ -4488,15 +4602,6 @@
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-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.0.tgz",
-      "integrity": "sha512-MtEC1TqN0EU5nephaJ4rAtThHtC86dNN9qCuEhtshvpVBkAW5ZO7BASN9REnF9eoXGcRub+pFuKEpOHE+HbEMw==",
-      "dev": true
-    },
-    "proxy-middleware": {
-      "version": "0.15.0",
-      "resolved": "https://registry.npmjs.org/proxy-middleware/-/proxy-middleware-0.15.0.tgz",
-      "integrity": "sha1-o/3xvvtzD5UZZYcqwvYHTGFHelY=",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz",
+      "integrity": "sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==",
       "dev": true
     },
     "prr": {
@@ -4607,6 +5077,16 @@
         "safe-buffer": "^5.1.2"
       }
     },
+    "punycode": {
+      "version": "1.3.2",
+      "resolved": "https://registry.npmjs.org/punycode/-/punycode-1.3.2.tgz",
+      "integrity": "sha1-llOgNvt8HuQjQvIyXM7v6jkmxI0="
+    },
+    "querystring": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/querystring/-/querystring-0.2.0.tgz",
+      "integrity": "sha1-sgmEkgO7Jd+CDadW50cAWHhSFiA="
+    },
     "randombytes": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/randombytes/-/randombytes-2.1.0.tgz",
@@ -4645,17 +5125,6 @@
         "safe-buffer": "~5.1.1",
         "string_decoder": "~1.1.1",
         "util-deprecate": "~1.0.1"
-      },
-      "dependencies": {
-        "string_decoder": {
-          "version": "1.1.1",
-          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
-          "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
-          "dev": true,
-          "requires": {
-            "safe-buffer": "~5.1.0"
-          }
-        }
       }
     },
     "readdirp": {
@@ -4698,9 +5167,9 @@
       "dev": true
     },
     "resolve": {
-      "version": "1.11.0",
-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.11.0.tgz",
-      "integrity": "sha512-WL2pBDjqT6pGUNSUzMw00o4T7If+z4H2x3Gz893WoUQ5KW8Vr9txp00ykiP16VBaZF5+j/OcXJHZ9+PCvdiDKw==",
+      "version": "1.11.1",
+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.11.1.tgz",
+      "integrity": "sha512-vIpgF6wfuJOZI7KKKSP+HmiKggadPQAdsp5HiC1mvqnfp0gF1vdwgBWZIdrVft9pgqoMFQN+R7BSWZiBxx+BBw==",
       "dev": true,
       "requires": {
         "path-parse": "^1.0.6"
@@ -4712,6 +5181,15 @@
       "integrity": "sha1-LGN/53yJOv0qZj/iGqkIAGjiBSo=",
       "dev": true
     },
+    "resource-loader": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/resource-loader/-/resource-loader-3.0.1.tgz",
+      "integrity": "sha512-fBuCRbEHdLCI1eglzQhUv9Rrdcmqkydr1r6uHE2cYHvRBrcLXeSmbE/qI/urFt8rPr/IGxir3BUwM5kUK8XoyA==",
+      "requires": {
+        "mini-signals": "^1.2.0",
+        "parse-uri": "^1.0.0"
+      }
+    },
     "ret": {
       "version": "0.1.15",
       "resolved": "https://registry.npmjs.org/ret/-/ret-0.1.15.tgz",
@@ -4729,33 +5207,26 @@
       }
     },
     "rollup": {
-      "version": "1.15.6",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.15.6.tgz",
-      "integrity": "sha512-s3Vn3QJQ5YVFfIG4nXoG9VdL1I37IZsft+4ZyeBhxE0df1kCFz9e+4bEAbR4mKH3pvBO9e9xjdxWPhhIp0r9ow==",
+      "version": "1.17.0",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.17.0.tgz",
+      "integrity": "sha512-k/j1m0NIsI4SYgCJR4MWPstGJOWfJyd6gycKoMhyoKPVXxm+L49XtbUwZyFsrSU2YXsOkM4u1ll9CS/ZgJBUpw==",
       "requires": {
         "@types/estree": "0.0.39",
-        "@types/node": "^12.0.8",
-        "acorn": "^6.1.1"
-      },
-      "dependencies": {
-        "@types/node": {
-          "version": "12.0.8",
-          "resolved": "https://registry.npmjs.org/@types/node/-/node-12.0.8.tgz",
-          "integrity": "sha512-b8bbUOTwzIY3V5vDTY1fIJ+ePKDUBqt2hC2woVGotdQQhG/2Sh62HOKHrT7ab+VerXAcPyAiTEipPu/FsreUtg=="
-        }
+        "@types/node": "^12.6.2",
+        "acorn": "^6.2.0"
       }
     },
     "rollup-plugin-commonjs": {
-      "version": "10.0.0",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.0.tgz",
-      "integrity": "sha512-B8MoX5GRpj3kW4+YaFO/di2JsZkBxNjVmZ9LWjUoTAjq8N9wc7HObMXPsrvolVV9JXVtYSscflXM14A19dXPNQ==",
+      "version": "10.0.1",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.1.tgz",
+      "integrity": "sha512-x0PcCVdEc4J8igv1qe2vttz8JKAKcTs3wfIA3L8xEty3VzxgORLrzZrNWaVMc+pBC4U3aDOb9BnWLAQ8J11vkA==",
       "dev": true,
       "requires": {
-        "estree-walker": "^0.6.0",
+        "estree-walker": "^0.6.1",
         "is-reference": "^1.1.2",
         "magic-string": "^0.25.2",
-        "resolve": "^1.10.1",
-        "rollup-pluginutils": "^2.7.0"
+        "resolve": "^1.11.0",
+        "rollup-pluginutils": "^2.8.1"
       }
     },
     "rollup-plugin-node-builtins": {
@@ -4771,16 +5242,16 @@
       }
     },
     "rollup-plugin-node-resolve": {
-      "version": "5.0.3",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.0.3.tgz",
-      "integrity": "sha512-Mhhmf0x493xgUPEsRELnU1VM+4+WO82knWkAbZ0d2DvZQZJMbhzyQK/hqtpVscoRru1EqlK3TM1kK9ro469wPw==",
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.2.0.tgz",
+      "integrity": "sha512-jUlyaDXts7TW2CqQ4GaO5VJ4PwwaV8VUGA7+km3n6k6xtOEacf61u0VXwN80phY/evMcaS+9eIeJ9MOyDxt5Zw==",
       "dev": true,
       "requires": {
         "@types/resolve": "0.0.8",
         "builtin-modules": "^3.1.0",
         "is-module": "^1.0.0",
-        "resolve": "^1.11.0",
-        "rollup-pluginutils": "^2.8.0"
+        "resolve": "^1.11.1",
+        "rollup-pluginutils": "^2.8.1"
       }
     },
     "rollup-plugin-typescript2": {
@@ -4846,35 +5317,6 @@
       "integrity": "sha1-uYSPJdbPNjMwc+ye+IVtQvEjPlI=",
       "dev": true
     },
-    "send": {
-      "version": "0.17.1",
-      "resolved": "https://registry.npmjs.org/send/-/send-0.17.1.tgz",
-      "integrity": "sha512-BsVKsiGcQMFwT8UxypobUKyv7irCNRHk1T0G680vk88yf6LBByGcZJOTJCrTP2xVN6yI+XjPJcNuE3V4fT9sAg==",
-      "dev": true,
-      "requires": {
-        "debug": "2.6.9",
-        "depd": "~1.1.2",
-        "destroy": "~1.0.4",
-        "encodeurl": "~1.0.2",
-        "escape-html": "~1.0.3",
-        "etag": "~1.8.1",
-        "fresh": "0.5.2",
-        "http-errors": "~1.7.2",
-        "mime": "1.6.0",
-        "ms": "2.1.1",
-        "on-finished": "~2.3.0",
-        "range-parser": "~1.2.1",
-        "statuses": "~1.5.0"
-      },
-      "dependencies": {
-        "ms": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
-          "dev": true
-        }
-      }
-    },
     "serve-index": {
       "version": "1.9.1",
       "resolved": "https://registry.npmjs.org/serve-index/-/serve-index-1.9.1.tgz",
@@ -4902,6 +5344,12 @@
             "statuses": ">= 1.4.0 < 2"
           }
         },
+        "inherits": {
+          "version": "2.0.3",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+          "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+          "dev": true
+        },
         "setprototypeof": {
           "version": "1.1.0",
           "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
@@ -4911,9 +5359,9 @@
       }
     },
     "set-value": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.0.tgz",
-      "integrity": "sha512-hw0yxk9GT/Hr5yJEYnHNKYXkIA8mVJgd9ditYZCe16ZczcaELYYcfvaXesNACk2O8O0nTiPQcQhGUQj8JLzeeg==",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.1.tgz",
+      "integrity": "sha512-JxHc1weCN68wRY0fhCoXpyK55m/XPHafOmK4UWD7m2CI14GMcFypt4w/0+NV5f/ZMby2F6S2wwA7fgynh9gWSw==",
       "dev": true,
       "requires": {
         "extend-shallow": "^2.0.1",
@@ -5082,9 +5530,9 @@
       "dev": true
     },
     "sourcemap-codec": {
-      "version": "1.4.4",
-      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.4.tgz",
-      "integrity": "sha512-CYAPYdBu34781kLHkaW3m6b/uUSyMOC2R61gcYMWooeuaGtjof86ZA/8T+qVPPt7np1085CR9hmMGrySwEc8Xg==",
+      "version": "1.4.6",
+      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.6.tgz",
+      "integrity": "sha512-1ZooVLYFxC448piVLBbtOxFcXwnymH9oUF8nRd3CuYDVvkRBxRl6pB4Mtas5a4drtL+E8LDgFkQNcgIw6tc8Hg==",
       "dev": true
     },
     "split": {
@@ -5148,10 +5596,13 @@
       "dev": true
     },
     "string_decoder": {
-      "version": "0.10.31",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
-      "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
-      "dev": true
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "~5.1.0"
+      }
     },
     "systemjs": {
       "version": "0.21.6",
@@ -5231,44 +5682,21 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.5.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.2.tgz",
-      "integrity": "sha512-7KxJovlYhTX5RaRbUdkAXN1KUZ8PwWlTzQdHV6xNqvuFOs7+WBo10TQUqT19Q/Jz2hk5v9TQDIhyLhhJY4p5AA==",
+      "version": "3.5.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.3.tgz",
+      "integrity": "sha512-ACzBtm/PhXBDId6a6sDJfroT2pOWt/oOnk4/dElG5G33ZL776N3Y6/6bKZJBFpd+b05F3Ct9qDjMeJmRWtE2/g==",
       "dev": true
     },
     "union-value": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz",
-      "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",
+      "integrity": "sha512-tJfXmxMeWYnczCVs7XAEvIV7ieppALdyepWMkHkwciRpZraG/xwT+s2JN8+pr1+8jCRf80FFzvr+MpQeeoF4Xg==",
       "dev": true,
       "requires": {
         "arr-union": "^3.1.0",
         "get-value": "^2.0.6",
         "is-extendable": "^0.1.1",
-        "set-value": "^0.4.3"
-      },
-      "dependencies": {
-        "extend-shallow": {
-          "version": "2.0.1",
-          "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
-          "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
-          "dev": true,
-          "requires": {
-            "is-extendable": "^0.1.0"
-          }
-        },
-        "set-value": {
-          "version": "0.4.3",
-          "resolved": "https://registry.npmjs.org/set-value/-/set-value-0.4.3.tgz",
-          "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=",
-          "dev": true,
-          "requires": {
-            "extend-shallow": "^2.0.1",
-            "is-extendable": "^0.1.1",
-            "is-plain-object": "^2.0.1",
-            "to-object-path": "^0.3.0"
-          }
-        }
+        "set-value": "^2.0.1"
       }
     },
     "universalify": {
@@ -5341,6 +5769,15 @@
       "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
       "dev": true
     },
+    "url": {
+      "version": "0.11.0",
+      "resolved": "https://registry.npmjs.org/url/-/url-0.11.0.tgz",
+      "integrity": "sha1-ODjpfPxgUh63PFJajlW/3Z4uKPE=",
+      "requires": {
+        "punycode": "1.3.2",
+        "querystring": "0.2.0"
+      }
+    },
     "use": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
@@ -5372,12 +5809,13 @@
       "dev": true
     },
     "websocket-driver": {
-      "version": "0.7.0",
-      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.0.tgz",
-      "integrity": "sha1-DK+dLXVdk67gSdS90NP+LMoqJOs=",
+      "version": "0.7.3",
+      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.3.tgz",
+      "integrity": "sha512-bpxWlvbbB459Mlipc5GBzzZwhoZgGEZLuqPaR0INBGnPAY1vdBX6hPnoFXiw+3yWxDuHyQjO2oXTMyS8A5haFg==",
       "dev": true,
       "requires": {
-        "http-parser-js": ">=0.4.0",
+        "http-parser-js": ">=0.4.0 <0.4.11",
+        "safe-buffer": ">=5.1.0",
         "websocket-extensions": ">=0.1.1"
       }
     },
diff --git a/package.json b/package.json
index 07cf1ea..8aafc46 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,9 @@
     "build": "tsc",
     "rollup": "rollup -c",
     "watch": "npx live-server --open=index.html --watch='./*.html,./*.js'",
-    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./*.js'"
+    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./src/*.js'",
+    "pixi": "cd pixi.js && npm run local && cd .. && npm run pixi:install",
+    "pixi:install": "rm -rf node_modules/pixi.js && rm package-lock.json"
   },
   "repository": {
     "type": "git",
@@ -17,13 +19,15 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@types/systemjs": "^0.20.6",
+    "@types/webgl2": "0.0.5",
     "imgui-js": "file:./imgui-js",
+    "pixi.js": "file:pixi.js/bundles/pixi.js/pixi.js-5.1.4.tgz",
     "rollup": "^1.15.6",
     "systemjs": "^0.21.5"
   },
   "devDependencies": {
     "@types/node": "^12.0.0",
+    "@types/systemjs": "^0.20.6",
     "live-server": "^1.2.1",
     "rollup-plugin-commonjs": "^10.0.0",
     "rollup-plugin-node-builtins": "^2.1.2",
diff --git a/pixi.js b/pixi.js
new file mode 160000
index 0000000..1b78731
--- /dev/null
+++ b/pixi.js
@@ -0,0 +1 @@
+Subproject commit 1b78731948b57c635a2e65444c387eed31ec7428
diff --git a/session b/session
index bbf5582..06b9a8d 100644
--- a/session
+++ b/session
@@ -1,322 +1,62 @@
 let SessionLoad = 1
 if &cp | set nocp | endif
-let s:cpo_save=&cpo
-set cpo&vim
-imap <Nul> <C-Space>
-inoremap <expr> <Up> pumvisible() ? "\" : "\<Up>"
-inoremap <expr> <S-Tab> pumvisible() ? "\" : "\<S-Tab>"
-inoremap <expr> <Down> pumvisible() ? "\" : "\<Down>"
-nnoremap <silent>  :TmuxNavigateLeft
-nnoremap <silent> <NL> :TmuxNavigateDown
-nnoremap <silent>  :TmuxNavigateUp
-nnoremap <silent>  :TmuxNavigateRight
-nnoremap <silent>  :TmuxNavigatePrevious
-nnoremap \d :YcmShowDetailedDiagnostic
-vnoremap <silent> \c :call CopyMarkWithCursor("<", ">")
-nnoremap <silent> \c :set opfunc=OpSysCopyMarkg@
-vmap gx <Plug>NetrwBrowseXVis
-nmap gx <Plug>NetrwBrowseX
-vnoremap <silent> <Plug>NetrwBrowseXVis :call netrw#BrowseXVis()
-nnoremap <silent> <Plug>NetrwBrowseX :call netrw#BrowseX(expand((exists("g:netrw_gx")? g:netrw_gx : '<cfile>')),netrw#CheckIfRemote())
-inoremap <expr> 	 pumvisible() ? "\" : "\	"
-let &cpo=s:cpo_save
-unlet s:cpo_save
-set autoindent
-set backspace=indent,eol,start
-set completefunc=youcompleteme#CompleteFunc
-set completeopt=preview,menuone
-set cpoptions=aAceFsB
-set fileencodings=ucs-bom,utf-8,default,latin1
-set fillchars=vert:|,fold:-,vert:│
-set helplang=en
-set hidden
-set include=import_s.\\zs[^'\"]*\\ze
-set includeexpr=TsIncludeExpr(v:fname)
-set nomodeline
-set path=.,/usr/include,,,./node_modules/**,node_modules/**
-set ruler
-set runtimepath=~/.vim,~/.vim/bundle/JustDo,~/.vim/bundle/YouCompleteMe,~/.vim/bundle/vim-easymotion,~/.vim/bundle/vim-tmux-navigator,~/.vim/bundle/yats.vim,/var/lib/vim/addons,/usr/share/vim/vimfiles,/usr/share/vim/vim74,/usr/share/vim/vimfiles/after,/var/lib/vim/addons/after,~/.vim/after
-set sessionoptions=blank,buffers,folds,help,options,tabpages,winsize,sesdir
-set shortmess=filnxtToOc
-set suffixes=.bak,~,.swp,.o,.info,.aux,.log,.dvi,.bbl,.blg,.brf,.cb,.ind,.idx,.ilg,.inx,.out,.toc
-set suffixesadd=.ts
 let s:so_save = &so | let s:siso_save = &siso | set so=0 siso=0
 let v:this_session=expand("<sfile>:p")
 silent only
+silent tabonly
 exe "cd " . escape(expand("<sfile>:p:h"), ' ')
 if expand('%') == '' && !&modified && line('$') <= 1 && getline(1) == ''
   let s:wipebuf = bufnr('%')
 endif
 set shortmess=aoO
+argglobal
+%argdel
+edit src/imgui_impl.ts
+set splitbelow splitright
+set nosplitbelow
+set nosplitright
+wincmd t
+set winminheight=0
+set winheight=1
+set winminwidth=0
+set winwidth=1
+argglobal
+let s:l = 1 - ((0 * winheight(0) + 21) / 42)
+if s:l < 1 | let s:l = 1 | endif
+exe s:l
+normal! zt
+1
+normal! 0
+tabnext 1
+badd +0 src/imgui_impl.ts
 badd +12 rollup.config.js
 badd +7 imgui-js/rollup.config.js
-badd +7 imgui-js/tsconfig.json
-badd +26 tsconfig.json
+badd +4 imgui-js/tsconfig.json
+badd +12 tsconfig.json
 badd +1 index.js
 badd +3904 imgui-js/imgui.ts
-badd +39 src/main.ts
+badd +80 src/main.ts
 badd +52 imgui-js/example/main.ts
-badd +8 package.json
+badd +34 package.json
 badd +1 imgui-js/dist/imgui.d.ts
 badd +1 imgui-js/bind-imgui.js
 badd +1 imgui-js/example/imgui_impl.js
 badd +2 imgui-js/example/imgui_impl.ts
 badd +295 imgui-js/imgui_demo.ts
 badd +4 index.html
-badd +14 indexdev.html
+badd +4 indexdev.html
 badd +6 imgui-js/example/index.html
-badd +2 imgui-js/example/system.config.js
+badd +6 imgui-js/example/system.config.js
 badd +40 imgui-js/package.json
-badd +201 node_modules/systemjs/dist/system.js
-argglobal
-silent! argdel *
-edit package.json
-set splitbelow splitright
-wincmd _ | wincmd |
-split
-1wincmd k
-wincmd w
-set nosplitbelow
-set nosplitright
-wincmd t
-set winheight=1 winwidth=1
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-argglobal
-enew
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=wipe
-setlocal buflisted
-setlocal buftype=nofile
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=s1:/*,mb:*,ex:*/,://,b:#,:%,:XCOMM,n:>,fb:-
-setlocal commentstring=/*%s*/
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != ''
-setlocal filetype=
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=tcq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=
-setlocal indentkeys=0{,0},:,0#,!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal nomodifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal previewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal noswapfile
-setlocal synmaxcol=3000
-if &syntax != ''
-setlocal syntax=
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal winfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-wincmd w
-argglobal
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=
-setlocal buflisted
-setlocal buftype=
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=
-setlocal commentstring=
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != 'json'
-setlocal filetype=json
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=cq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=GetJSONIndent()
-setlocal indentkeys=0{,0},0),0[,0],!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal modifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal nopreviewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal swapfile
-setlocal synmaxcol=3000
-if &syntax != 'json'
-setlocal syntax=json
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal nowinfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-silent! normal! zE
-let s:l = 23 - ((19 * winheight(0) + 15) / 31)
-if s:l < 1 | let s:l = 1 | endif
-exe s:l
-normal! zt
-23
-normal! 024|
-wincmd w
-2wincmd w
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-tabnext 1
-if exists('s:wipebuf')
+badd +1 node_modules/systemjs/dist/system.js
+badd +1 src/main.js
+badd +1 imgui-js/example/main.js
+if exists('s:wipebuf') && len(win_findbuf(s:wipebuf)) == 0
   silent exe 'bwipe ' . s:wipebuf
 endif
 unlet! s:wipebuf
 set winheight=1 winwidth=20 shortmess=filnxtToOc
+set winminheight=1 winminwidth=1
 let s:sx = expand("<sfile>:p:r")."x.vim"
 if file_readable(s:sx)
   exe "source " . fnameescape(s:sx)
diff --git a/src/imgui_impl.js b/src/imgui_impl.js
new file mode 100644
index 0000000..416e4b2
--- /dev/null
+++ b/src/imgui_impl.js
@@ -0,0 +1,736 @@
+System.register(["imgui-js", "pixi.js", "./utils"], function (exports_1, context_1) {
+    "use strict";
+    var ImGui, PIXI, U, clipboard_text, contexts, contextIOs, isFirstWindow, ImGuiImplInternalRenderer, gl, app, ImGuiWindowLayer, ImGuiWindow, canvas, g_ShaderHandle, g_VertHandle, g_FragHandle, g_AttribLocationTex, g_AttribLocationProjMtx, g_AttribLocationPosition, g_AttribLocationUV, g_AttribLocationColor, g_VaoHandle, g_VboHandle, g_ElementsHandle, g_FontTexture, mouse_button_map;
+    var __moduleName = context_1 && context_1.id;
+    function document_on_copy(event) {
+        if (event.clipboardData) {
+            event.clipboardData.setData("text/plain", clipboard_text);
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function document_on_cut(event) {
+        if (event.clipboardData) {
+            event.clipboardData.setData("text/plain", clipboard_text);
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function document_on_paste(event) {
+        if (event.clipboardData) {
+            clipboard_text = event.clipboardData.getData("text/plain");
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function window_on_gamepadconnected(event /* GamepadEvent */) {
+        console.log("Gamepad connected at index %d: %s. %d buttons, %d axes.", event.gamepad.index, event.gamepad.id, event.gamepad.buttons.length, event.gamepad.axes.length);
+    }
+    function window_on_gamepaddisconnected(event /* GamepadEvent */) {
+        console.log("Gamepad disconnected at index %d: %s.", event.gamepad.index, event.gamepad.id);
+    }
+    function canvas_on_blur(event) {
+        for (var io of contextIOs) {
+            io.KeyCtrl = false;
+            io.KeyShift = false;
+            io.KeyAlt = false;
+            io.KeySuper = false;
+            for (let i = 0; i < io.KeysDown.length; ++i) {
+                io.KeysDown[i] = false;
+            }
+            for (let i = 0; i < io.MouseDown.length; ++i) {
+                io.MouseDown[i] = false;
+            }
+        }
+    }
+    function canvas_on_keydown(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.KeyCtrl = event.ctrlKey;
+            io.KeyShift = event.shiftKey;
+            io.KeyAlt = event.altKey;
+            io.KeySuper = event.metaKey;
+            ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+            io.KeysDown[event.keyCode] = true;
+            // forward to the keypress event
+            if ( /*io.WantCaptureKeyboard ||*/event.key === "Tab") {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_keyup(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.KeyCtrl = event.ctrlKey;
+            io.KeyShift = event.shiftKey;
+            io.KeyAlt = event.altKey;
+            io.KeySuper = event.metaKey;
+            ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+            io.KeysDown[event.keyCode] = false;
+            if (io.WantCaptureKeyboard) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_keypress(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.AddInputCharacter(event.charCode);
+            if (io.WantCaptureKeyboard) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_contextmenu(event) {
+        for (var io of contextIOs) {
+            if (io.WantCaptureMouse) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_wheel(event) {
+        for (var io of contextIOs) {
+            let scale = 1.0;
+            switch (event.deltaMode) {
+                case event.DOM_DELTA_PIXEL:
+                    scale = 0.01;
+                    break;
+                case event.DOM_DELTA_LINE:
+                    scale = 0.2;
+                    break;
+                case event.DOM_DELTA_PAGE:
+                    scale = 1.0;
+                    break;
+            }
+            io.MouseWheelH = event.deltaX * scale;
+            io.MouseWheel = -event.deltaY * scale; // Mouse wheel: 1 unit scrolls about 5 lines text.
+            if (io.WantCaptureMouse) {
+                event.preventDefault();
+            }
+        }
+    }
+    function PrePIXIInit() {
+        PIXI.Renderer.registerPlugin("imgui_renderer", U.fromConstructor(ImGuiImplInternalRenderer));
+    }
+    exports_1("PrePIXIInit", PrePIXIInit);
+    function Init(_app) {
+        // Setup Dear ImGui binding
+        ImGui.IMGUI_CHECKVERSION();
+        if (typeof (document) !== "undefined") {
+            document.body.addEventListener("copy", document_on_copy);
+            document.body.addEventListener("cut", document_on_cut);
+            document.body.addEventListener("paste", document_on_paste);
+        }
+        if (typeof (window) !== "undefined") {
+            window.addEventListener("gamepadconnected", window_on_gamepadconnected);
+            window.addEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+        }
+        app = _app;
+        gl = app.renderer.gl;
+        canvas = app.view;
+        gl.getExtension("EXT_color_buffer_float");
+        if (canvas !== null) {
+            canvas.style.touchAction = "none"; // Disable browser handling of all panning and zooming gestures.
+            canvas.addEventListener("blur", canvas_on_blur);
+            canvas.addEventListener("keydown", canvas_on_keydown);
+            canvas.addEventListener("keyup", canvas_on_keyup);
+            canvas.addEventListener("keypress", canvas_on_keypress);
+            canvas.addEventListener("contextmenu", canvas_on_contextmenu);
+            canvas.addEventListener("wheel", canvas_on_wheel);
+        }
+        CreateDeviceObjects();
+    }
+    exports_1("Init", Init);
+    function Shutdown() {
+        DestroyDeviceObjects();
+        if (canvas !== null) {
+            canvas.removeEventListener("blur", canvas_on_blur);
+            canvas.removeEventListener("keydown", canvas_on_keydown);
+            canvas.removeEventListener("keyup", canvas_on_keyup);
+            canvas.removeEventListener("keypress", canvas_on_keypress);
+            canvas.removeEventListener("contextmenu", canvas_on_contextmenu);
+            canvas.removeEventListener("wheel", canvas_on_wheel);
+        }
+        app = null;
+        canvas = null;
+        if (typeof (window) !== "undefined") {
+            window.removeEventListener("gamepadconnected", window_on_gamepadconnected);
+            window.removeEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+        }
+        if (typeof (document) !== "undefined") {
+            document.body.removeEventListener("copy", document_on_copy);
+            document.body.removeEventListener("cut", document_on_cut);
+            document.body.removeEventListener("paste", document_on_paste);
+        }
+    }
+    exports_1("Shutdown", Shutdown);
+    function CreateFontsTexture() {
+        const io = ImGui.GetIO();
+        // Backup GL state
+        const last_texture = gl && gl.getParameter(gl.TEXTURE_BINDING_2D);
+        // Build texture atlas
+        // const width: number = 256;
+        // const height: number = 256;
+        // const pixels: Uint8Array = new Uint8Array(4 * width * height).fill(0xff);
+        const { width, height, pixels } = io.Fonts.GetTexDataAsRGBA32(); // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+        // console.log(`font texture ${width} x ${height} @ ${pixels.length}`);
+        // Upload texture to graphics system
+        g_FontTexture = gl && gl.createTexture();
+        gl && gl.bindTexture(gl.TEXTURE_2D, g_FontTexture);
+        gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+        gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+        // gl && gl.pixelStorei(gl.UNPACK_ROW_LENGTH); // WebGL2
+        gl && gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+        // Store our identifier
+        io.Fonts.TexID = g_FontTexture || { foo: "bar" };
+        // console.log("font texture id", g_FontTexture);
+        // Restore modified GL state
+        gl && last_texture && gl.bindTexture(gl.TEXTURE_2D, last_texture);
+    }
+    function DestroyFontsTexture() {
+        const io = ImGui.GetIO();
+        io.Fonts.TexID = null;
+        gl && gl.deleteTexture(g_FontTexture);
+        g_FontTexture = null;
+    }
+    function CreateDeviceObjects() {
+        const vertex_shader = [
+            "#version 300 es",
+            "uniform mat4 ProjMtx;",
+            "in vec2 Position;",
+            "in vec2 UV;",
+            "in vec4 Color;",
+            "out vec2 Frag_UV;",
+            "out vec4 Frag_Color;",
+            "void main() {",
+            "	Frag_UV = UV;",
+            "	Frag_Color = Color;",
+            "	gl_Position = ProjMtx * vec4(Position.xy,0,1);",
+            "}",
+        ];
+        const fragment_shader = [
+            "#version 300 es",
+            "precision mediump float;",
+            "uniform sampler2D Texture;",
+            "in vec2 Frag_UV;",
+            "in vec4 Frag_Color;",
+            "out vec4 OutColor;",
+            "void main() {",
+            "	OutColor = Frag_Color * texture(Texture, Frag_UV);",
+            "}",
+        ];
+        g_ShaderHandle = gl && gl.createProgram();
+        g_VertHandle = gl && gl.createShader(gl.VERTEX_SHADER);
+        g_FragHandle = gl && gl.createShader(gl.FRAGMENT_SHADER);
+        gl && gl.shaderSource(g_VertHandle, vertex_shader.join("\n"));
+        gl && gl.shaderSource(g_FragHandle, fragment_shader.join("\n"));
+        gl && gl.compileShader(g_VertHandle);
+        gl && gl.compileShader(g_FragHandle);
+        gl && gl.attachShader(g_ShaderHandle, g_VertHandle);
+        gl && gl.attachShader(g_ShaderHandle, g_FragHandle);
+        gl && gl.linkProgram(g_ShaderHandle);
+        g_AttribLocationTex = gl && gl.getUniformLocation(g_ShaderHandle, "Texture");
+        g_AttribLocationProjMtx = gl && gl.getUniformLocation(g_ShaderHandle, "ProjMtx");
+        g_AttribLocationPosition = gl && gl.getAttribLocation(g_ShaderHandle, "Position") || 0;
+        g_AttribLocationUV = gl && gl.getAttribLocation(g_ShaderHandle, "UV") || 0;
+        g_AttribLocationColor = gl && gl.getAttribLocation(g_ShaderHandle, "Color") || 0;
+        g_VaoHandle = gl && gl.createVertexArray();
+        g_VboHandle = gl && gl.createBuffer();
+        g_ElementsHandle = gl && gl.createBuffer();
+    }
+    function DestroyDeviceObjects() {
+        DestroyFontsTexture();
+        gl && gl.deleteVertexArray(g_VaoHandle);
+        g_VaoHandle = null;
+        gl && gl.deleteBuffer(g_VboHandle);
+        g_VboHandle = null;
+        gl && gl.deleteBuffer(g_ElementsHandle);
+        g_ElementsHandle = null;
+        g_AttribLocationTex = null;
+        g_AttribLocationProjMtx = null;
+        g_AttribLocationPosition = -1;
+        g_AttribLocationUV = -1;
+        g_AttribLocationColor = -1;
+        gl && gl.deleteProgram(g_ShaderHandle);
+        g_ShaderHandle = null;
+        gl && gl.deleteShader(g_VertHandle);
+        g_VertHandle = null;
+        gl && gl.deleteShader(g_FragHandle);
+        g_FragHandle = null;
+    }
+    return {
+        setters: [
+            function (ImGui_1) {
+                ImGui = ImGui_1;
+            },
+            function (PIXI_1) {
+                PIXI = PIXI_1;
+            },
+            function (U_1) {
+                U = U_1;
+            }
+        ],
+        execute: function () {
+            clipboard_text = "";
+            contexts = [];
+            contextIOs = [];
+            isFirstWindow = true;
+            ImGuiImplInternalRenderer = class ImGuiImplInternalRenderer extends PIXI.ObjectRenderer {
+                constructor(r) {
+                    super(r);
+                }
+                render(owner) {
+                    if (!(owner instanceof ImGuiWindowLayer))
+                        return;
+                    const window = owner.window;
+                    const io = window.io;
+                    const draw_data = ImGui.GetDrawData();
+                    if (draw_data === null) {
+                        throw new Error();
+                    }
+                    gl || console.log(draw_data);
+                    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+                    const fb_width = io.DisplaySize.x * io.DisplayFramebufferScale.x;
+                    const fb_height = io.DisplaySize.y * io.DisplayFramebufferScale.y;
+                    if (fb_width === 0 || fb_height === 0) {
+                        return;
+                    }
+                    draw_data.ScaleClipRects(io.DisplayFramebufferScale);
+                    // Backup GL state
+                    const last_program = gl && gl.getParameter(gl.CURRENT_PROGRAM) || null;
+                    const last_active_texture = gl && gl.getParameter(gl.ACTIVE_TEXTURE) || null;
+                    gl && gl.activeTexture(gl.TEXTURE0);
+                    const last_texture0 = gl && gl.getParameter(gl.TEXTURE_BINDING_2D) || null;
+                    const last_vertex_array = gl && gl.getParameter(gl.VERTEX_ARRAY_BINDING) || null;
+                    const last_array_buffer = gl && gl.getParameter(gl.ARRAY_BUFFER_BINDING) || null;
+                    const last_element_array_buffer = gl && gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING) || null;
+                    // GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+                    const last_viewport = gl && gl.getParameter(gl.VIEWPORT) || null;
+                    const last_scissor_box = gl && gl.getParameter(gl.SCISSOR_BOX) || null;
+                    const last_blend_src_rgb = gl && gl.getParameter(gl.BLEND_SRC_RGB) || null;
+                    const last_blend_dst_rgb = gl && gl.getParameter(gl.BLEND_DST_RGB) || null;
+                    const last_blend_src_alpha = gl && gl.getParameter(gl.BLEND_SRC_ALPHA) || null;
+                    const last_blend_dst_alpha = gl && gl.getParameter(gl.BLEND_DST_ALPHA) || null;
+                    const last_blend_equation_rgb = gl && gl.getParameter(gl.BLEND_EQUATION_RGB) || null;
+                    const last_blend_equation_alpha = gl && gl.getParameter(gl.BLEND_EQUATION_ALPHA) || null;
+                    const last_enable_blend = gl && gl.getParameter(gl.BLEND) || null;
+                    const last_enable_cull_face = gl && gl.getParameter(gl.CULL_FACE) || null;
+                    const last_enable_depth_test = gl && gl.getParameter(gl.DEPTH_TEST) || null;
+                    const last_enable_scissor_test = gl && gl.getParameter(gl.SCISSOR_TEST) || null;
+                    gl.clearColor(0, 0, 0, 0);
+                    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+                    gl && gl.bindVertexArray(g_VaoHandle);
+                    // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
+                    gl && gl.enable(gl.BLEND);
+                    gl && gl.blendEquation(gl.FUNC_ADD);
+                    gl && gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE);
+                    gl && gl.disable(gl.CULL_FACE);
+                    gl && gl.disable(gl.DEPTH_TEST);
+                    gl && gl.enable(gl.SCISSOR_TEST);
+                    // glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+                    // Setup viewport, orthographic projection matrix
+                    // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+                    gl && gl.viewport(0, 0, fb_width, fb_height);
+                    const L = draw_data.DisplayPos.x;
+                    const R = draw_data.DisplayPos.x + draw_data.DisplaySize.x;
+                    const T = draw_data.DisplayPos.y;
+                    const B = draw_data.DisplayPos.y + draw_data.DisplaySize.y;
+                    // we actually flip the bottom and top here to match with PIXI's texture usage
+                    const ortho_projection = new Float32Array([
+                        2.0 / (R - L), 0.0, 0.0, 0.0,
+                        0.0, 2.0 / (B - T), 0.0, 0.0,
+                        0.0, 0.0, -1.0, 0.0,
+                        (R + L) / (L - R), (B + T) / (T - B), 0.0, 1.0,
+                    ]);
+                    gl && gl.useProgram(g_ShaderHandle);
+                    gl && gl.uniform1i(g_AttribLocationTex, 0);
+                    gl && g_AttribLocationProjMtx && gl.uniformMatrix4fv(g_AttribLocationProjMtx, false, ortho_projection);
+                    // Render command lists
+                    gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationPosition);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationUV);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationColor);
+                    gl && gl.vertexAttribPointer(g_AttribLocationPosition, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertPosOffset);
+                    gl && gl.vertexAttribPointer(g_AttribLocationUV, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertUVOffset);
+                    gl && gl.vertexAttribPointer(g_AttribLocationColor, 4, gl.UNSIGNED_BYTE, true, ImGui.ImDrawVertSize, ImGui.ImDrawVertColOffset);
+                    // Draw
+                    const pos = draw_data.DisplayPos;
+                    const idx_buffer_type = gl && ((ImGui.ImDrawIdxSize === 4) ? gl.UNSIGNED_INT : gl.UNSIGNED_SHORT) || 0;
+                    draw_data.IterateDrawLists((draw_list) => {
+                        gl || console.log(draw_list);
+                        gl || console.log("VtxBuffer.length", draw_list.VtxBuffer.length);
+                        gl || console.log("IdxBuffer.length", draw_list.IdxBuffer.length);
+                        let idx_buffer_offset = 0;
+                        gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+                        gl && gl.bufferData(gl.ARRAY_BUFFER, draw_list.VtxBuffer, gl.STREAM_DRAW);
+                        gl && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+                        gl && gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, draw_list.IdxBuffer, gl.STREAM_DRAW);
+                        draw_list.IterateDrawCmds((draw_cmd) => {
+                            gl || console.log(draw_cmd);
+                            gl || console.log("ElemCount", draw_cmd.ElemCount);
+                            gl || console.log("ClipRect", draw_cmd.ClipRect.x, draw_cmd.ClipRect.y, draw_cmd.ClipRect.z - draw_cmd.ClipRect.x, draw_cmd.ClipRect.w - draw_cmd.ClipRect.y);
+                            gl || console.log("TextureId", draw_cmd.TextureId);
+                            if (!gl) {
+                                console.log("i: pos.x pos.y uv.x uv.y col");
+                                for (let i = 0; i < Math.min(3, draw_cmd.ElemCount); ++i) {
+                                    const view = new ImGui.ImDrawVert(draw_list.VtxBuffer.buffer, draw_list.VtxBuffer.byteOffset + i * ImGui.ImDrawVertSize);
+                                    console.log(`${i}: ${view.pos[0].toFixed(2)} ${view.pos[1].toFixed(2)} ${view.uv[0].toFixed(5)} ${view.uv[1].toFixed(5)} ${("00000000" + view.col[0].toString(16)).substr(-8)}`);
+                                }
+                            }
+                            if (draw_cmd.UserCallback !== null) {
+                                // User callback (registered via ImDrawList::AddCallback)
+                                draw_cmd.UserCallback(draw_list, draw_cmd);
+                            }
+                            else {
+                                const clip_rect = new ImGui.ImVec4(draw_cmd.ClipRect.x - pos.x, draw_cmd.ClipRect.y - pos.y, draw_cmd.ClipRect.z - pos.x, draw_cmd.ClipRect.w - pos.y);
+                                if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0 && clip_rect.w >= 0.0) {
+                                    // Apply scissor/clipping rectangle
+                                    gl && gl.scissor(clip_rect.x, clip_rect.y, clip_rect.z - clip_rect.x, clip_rect.w - clip_rect.y);
+                                    // Bind texture, Draw
+                                    gl && gl.bindTexture(gl.TEXTURE_2D, draw_cmd.TextureId);
+                                    gl && gl.drawElements(gl.TRIANGLES, draw_cmd.ElemCount, idx_buffer_type, idx_buffer_offset);
+                                }
+                            }
+                            idx_buffer_offset += draw_cmd.ElemCount * ImGui.ImDrawIdxSize;
+                        });
+                    });
+                    // Restore modified GL state
+                    gl && (last_program !== null) && gl.useProgram(last_program);
+                    gl && (last_texture0 !== null) && gl.bindTexture(gl.TEXTURE_2D, last_texture0);
+                    gl && (last_active_texture !== null) && gl.activeTexture(last_active_texture);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationPosition);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationUV);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationColor);
+                    gl && (last_vertex_array !== null) && gl.bindVertexArray(last_vertex_array);
+                    gl && (last_array_buffer !== null) && gl.bindBuffer(gl.ARRAY_BUFFER, last_array_buffer);
+                    gl && (last_element_array_buffer !== null) && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+                    gl && (last_viewport !== null) && gl.viewport(last_viewport[0], last_viewport[1], last_viewport[2], last_viewport[3]);
+                    gl && (last_scissor_box !== null) && gl.scissor(last_scissor_box[0], last_scissor_box[1], last_scissor_box[2], last_scissor_box[3]);
+                    gl && (last_blend_equation_rgb !== null && last_blend_equation_alpha !== null) && gl.blendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+                    gl && (last_blend_src_rgb !== null && last_blend_src_alpha !== null && last_blend_dst_rgb !== null && last_blend_dst_alpha !== null) && gl.blendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
+                    gl && (last_enable_blend ? gl.enable(gl.BLEND) : gl.disable(gl.BLEND));
+                    gl && (last_enable_cull_face ? gl.enable(gl.CULL_FACE) : gl.disable(gl.CULL_FACE));
+                    gl && (last_enable_depth_test ? gl.enable(gl.DEPTH_TEST) : gl.disable(gl.DEPTH_TEST));
+                    gl && (last_enable_scissor_test ? gl.enable(gl.SCISSOR_TEST) : gl.disable(gl.SCISSOR_TEST));
+                    // glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
+                }
+            };
+            gl = null;
+            app = null;
+            ImGuiWindowLayer = class ImGuiWindowLayer extends PIXI.Sprite {
+                constructor(window, tex) {
+                    super();
+                    this.pluginName = "imgui_renderer";
+                    this.window = window;
+                }
+            };
+            ImGuiWindow = class ImGuiWindow extends PIXI.Container {
+                constructor(sizeX, sizeY, update) {
+                    super();
+                    this.baseTex = new PIXI.BaseRenderTexture({ scaleMode: PIXI.SCALE_MODES.LINEAR, resolution: 1, type: PIXI.TYPES.FLOAT, format: PIXI.FORMATS.RGBA });
+                    this.tex = new PIXI.RenderTexture(this.baseTex);
+                    this.surface = new PIXI.Sprite(this.tex);
+                    this.imgui = new ImGuiWindowLayer(this, this.tex);
+                    this.ctx = ImGui.CreateContext(contextIOs.length == 0 ? null : contextIOs[0].Fonts);
+                    ImGui.SetCurrentContext(this.ctx);
+                    this.io = ImGui.GetIO();
+                    contexts.push(this.ctx);
+                    contextIOs.push(this.io);
+                    if (contexts.length == 1) {
+                        CreateFontsTexture();
+                    }
+                    if (typeof (window) !== "undefined") {
+                        ImGui.LoadIniSettingsFromMemory(window.localStorage.getItem("imgui.ini") || "");
+                    }
+                    if (typeof (navigator) !== "undefined") {
+                        this.io.ConfigMacOSXBehaviors = navigator.platform.match(/Mac/) !== null;
+                    }
+                    this.io.SetClipboardTextFn = (user_data, text) => {
+                        clipboard_text = text;
+                        // console.log(`set clipboard_text: "${clipboard_text}"`);
+                        if (typeof navigator !== "undefined" && typeof navigator.clipboard !== "undefined") {
+                            // console.log(`clipboard.writeText: "${clipboard_text}"`);
+                            navigator.clipboard.writeText(clipboard_text).then(() => {
+                                // console.log(`clipboard.writeText: "${clipboard_text}" done.`);
+                            });
+                        }
+                    };
+                    this.io.GetClipboardTextFn = (user_data) => {
+                        // if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+                        //     console.log(`clipboard.readText: "${clipboard_text}"`);
+                        //     (navigator as any).clipboard.readText().then((text: string): void => {
+                        //         clipboard_text = text;
+                        //         console.log(`clipboard.readText: "${clipboard_text}" done.`);
+                        //     });
+                        // }
+                        // console.log(`get clipboard_text: "${clipboard_text}"`);
+                        return clipboard_text;
+                    };
+                    this.io.ClipboardUserData = null;
+                    // Setup back-end capabilities flags
+                    this.io.BackendFlags |= ImGui.BackendFlags.HasMouseCursors; // We can honor GetMouseCursor() values (optional)
+                    // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+                    this.io.KeyMap[ImGui.Key.Tab] = 9;
+                    this.io.KeyMap[ImGui.Key.LeftArrow] = 37;
+                    this.io.KeyMap[ImGui.Key.RightArrow] = 39;
+                    this.io.KeyMap[ImGui.Key.UpArrow] = 38;
+                    this.io.KeyMap[ImGui.Key.DownArrow] = 40;
+                    this.io.KeyMap[ImGui.Key.PageUp] = 33;
+                    this.io.KeyMap[ImGui.Key.PageDown] = 34;
+                    this.io.KeyMap[ImGui.Key.Home] = 36;
+                    this.io.KeyMap[ImGui.Key.End] = 35;
+                    this.io.KeyMap[ImGui.Key.Insert] = 45;
+                    this.io.KeyMap[ImGui.Key.Delete] = 46;
+                    this.io.KeyMap[ImGui.Key.Backspace] = 8;
+                    this.io.KeyMap[ImGui.Key.Space] = 32;
+                    this.io.KeyMap[ImGui.Key.Enter] = 13;
+                    this.io.KeyMap[ImGui.Key.Escape] = 27;
+                    this.io.KeyMap[ImGui.Key.A] = 65;
+                    this.io.KeyMap[ImGui.Key.C] = 67;
+                    this.io.KeyMap[ImGui.Key.V] = 86;
+                    this.io.KeyMap[ImGui.Key.X] = 88;
+                    this.io.KeyMap[ImGui.Key.Y] = 89;
+                    this.io.KeyMap[ImGui.Key.Z] = 90;
+                    this.update = update;
+                    this.resize(sizeX, sizeY);
+                    this.imgui.pluginName = 'imgui_renderer';
+                    this.addChild(this.surface);
+                    app.renderer.plugins.interaction.addListener("mousedown", this.mouseDown.bind(this));
+                    app.renderer.plugins.interaction.addListener("mouseup", this.mouseUp.bind(this));
+                    app.ticker.add(this.updateInternal.bind(this));
+                    this.interactive = false;
+                    this.interactiveChildren = true;
+                    this.surface.interactive = false;
+                }
+                getSizeX() { return this.sizeX; }
+                getSizeY() { return this.sizeY; }
+                withContext(cb) {
+                    ImGui.SetCurrentContext(this.ctx);
+                    cb();
+                }
+                mouseDown(e) {
+                    if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface) {
+                        this.io.MouseDown[mouse_button_map[0]] = true;
+                    }
+                }
+                mouseUp(e) {
+                    if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface) {
+                        this.io.MouseDown[mouse_button_map[0]] = false;
+                    }
+                }
+                resize(sizeX, sizeY) {
+                    this.sizeX = sizeX;
+                    this.sizeY = sizeY;
+                    this.baseTex.resize(sizeX, sizeY);
+                    this.tex.frame = new PIXI.Rectangle(0, 0, this.baseTex.width, this.baseTex.height);
+                }
+                updateInternal(deltaTime) {
+                    const dt = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+                    ImGui.SetCurrentContext(this.ctx);
+                    if (this.io.WantSaveIniSettings) {
+                        this.io.WantSaveIniSettings = false;
+                        if (typeof (window) !== "undefined") {
+                            window.localStorage.setItem("imgui.ini", ImGui.SaveIniSettingsToMemory());
+                        }
+                    }
+                    this.io.DisplaySize.x = this.sizeX;
+                    this.io.DisplaySize.y = this.sizeY;
+                    this.io.DisplayFramebufferScale.x = 1;
+                    this.io.DisplayFramebufferScale.y = 1;
+                    this.io.DeltaTime = dt;
+                    let localPos = this.toLocal(app.renderer.plugins.interaction.mouse.global);
+                    if (localPos.x < 0 || localPos.y < 0 || localPos.x >= this.sizeX || localPos.y >= this.sizeY) {
+                        localPos = new PIXI.Point(-Number.MAX_VALUE, -Number.MAX_VALUE);
+                    }
+                    this.io.MousePos.x = localPos.x;
+                    this.io.MousePos.y = localPos.y;
+                    if (this.io.WantSetMousePos) {
+                        console.log("TODO: MousePos", this.io.MousePos.x, this.io.MousePos.y);
+                    }
+                    if (typeof (document) !== "undefined") {
+                        if (this.io.MouseDrawCursor) {
+                            document.body.style.cursor = "none";
+                        }
+                        else {
+                            switch (ImGui.GetMouseCursor()) {
+                                case ImGui.MouseCursor.None:
+                                    document.body.style.cursor = "none";
+                                    break;
+                                default:
+                                case ImGui.MouseCursor.Arrow:
+                                    document.body.style.cursor = "default";
+                                    break;
+                                case ImGui.MouseCursor.TextInput:
+                                    document.body.style.cursor = "text";
+                                    break; // When hovering over InputText, etc.
+                                case ImGui.MouseCursor.ResizeAll:
+                                    document.body.style.cursor = "move";
+                                    break; // Unused
+                                case ImGui.MouseCursor.ResizeNS:
+                                    document.body.style.cursor = "ns-resize";
+                                    break; // When hovering over an horizontal border
+                                case ImGui.MouseCursor.ResizeEW:
+                                    document.body.style.cursor = "ew-resize";
+                                    break; // When hovering over a vertical border or a column
+                                case ImGui.MouseCursor.ResizeNESW:
+                                    document.body.style.cursor = "nesw-resize";
+                                    break; // When hovering over the bottom-left corner of a window
+                                case ImGui.MouseCursor.ResizeNWSE:
+                                    document.body.style.cursor = "nwse-resize";
+                                    break; // When hovering over the bottom-right corner of a window
+                                case ImGui.MouseCursor.Hand:
+                                    document.body.style.cursor = "move";
+                                    break;
+                            }
+                        }
+                    }
+                    // Gamepad navigation mapping [BETA]
+                    for (let i = 0; i < this.io.NavInputs.length; ++i) {
+                        this.io.NavInputs[i] = 0.0;
+                    }
+                    if (this.io.ConfigFlags & ImGui.ConfigFlags.NavEnableGamepad) {
+                        // Update gamepad inputs
+                        const gamepads = (typeof (navigator) !== "undefined" && typeof (navigator.getGamepads) === "function") ? navigator.getGamepads() : [];
+                        for (let i = 0; i < gamepads.length; ++i) {
+                            const gamepad = gamepads[i];
+                            if (!gamepad) {
+                                continue;
+                            }
+                            const buttons_count = gamepad.buttons.length;
+                            const axes_count = gamepad.axes.length;
+                            const MAP_BUTTON = function (NAV_NO, BUTTON_NO) {
+                                if (!gamepad) {
+                                    return;
+                                }
+                                if (buttons_count > BUTTON_NO && gamepad.buttons[BUTTON_NO].pressed)
+                                    this.io.NavInputs[NAV_NO] = 1.0;
+                            };
+                            const MAP_ANALOG = function (NAV_NO, AXIS_NO, V0, V1) {
+                                if (!gamepad) {
+                                    return;
+                                }
+                                let v = (axes_count > AXIS_NO) ? gamepad.axes[AXIS_NO] : V0;
+                                v = (v - V0) / (V1 - V0);
+                                if (v > 1.0)
+                                    v = 1.0;
+                                if (this.io.NavInputs[NAV_NO] < v)
+                                    this.io.NavInputs[NAV_NO] = v;
+                            };
+                            // TODO: map input based on vendor and product id
+                            // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/id
+                            const match = gamepad.id.match(/^([0-9a-f]{4})-([0-9a-f]{4})-.*$/);
+                            const match_chrome = gamepad.id.match(/^.*\(.*Vendor: ([0-9a-f]{4}) Product: ([0-9a-f]{4})\).*$/);
+                            const vendor = (match && match[1]) || (match_chrome && match_chrome[1]) || "0000";
+                            const product = (match && match[2]) || (match_chrome && match_chrome[2]) || "0000";
+                            switch (vendor + product) {
+                                case "046dc216": // Logitech Logitech Dual Action (Vendor: 046d Product: c216)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 1); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 2); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 0); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_ANALOG(ImGui.NavInput.DpadLeft, 4, -0.3, -0.9); // D-Pad Left
+                                    MAP_ANALOG(ImGui.NavInput.DpadRight, 4, +0.3, +0.9); // D-Pad Right
+                                    MAP_ANALOG(ImGui.NavInput.DpadUp, 5, -0.3, -0.9); // D-Pad Up
+                                    MAP_ANALOG(ImGui.NavInput.DpadDown, 5, +0.3, +0.9); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 6); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 7); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                case "046dc21d": // Logitech Gamepad F310 (STANDARD GAMEPAD Vendor: 046d Product: c21d)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 0); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 1); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 2); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_BUTTON(ImGui.NavInput.DpadLeft, 14); // D-Pad Left
+                                    MAP_BUTTON(ImGui.NavInput.DpadRight, 15); // D-Pad Right
+                                    MAP_BUTTON(ImGui.NavInput.DpadUp, 12); // D-Pad Up
+                                    MAP_BUTTON(ImGui.NavInput.DpadDown, 13); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_ANALOG(ImGui.NavInput.TweakSlow, 6, +0.3, +0.9); // L2 / LT
+                                    MAP_ANALOG(ImGui.NavInput.TweakFast, 7, +0.3, +0.9); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                case "2dc86001": // 8Bitdo SN30 Pro  8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6001)
+                                case "2dc86101": // 8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6101)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 1); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 0); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 4); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_ANALOG(ImGui.NavInput.DpadLeft, 6, -0.3, -0.9); // D-Pad Left
+                                    MAP_ANALOG(ImGui.NavInput.DpadRight, 6, +0.3, +0.9); // D-Pad Right
+                                    MAP_ANALOG(ImGui.NavInput.DpadUp, 7, -0.3, -0.9); // D-Pad Up
+                                    MAP_ANALOG(ImGui.NavInput.DpadDown, 7, +0.3, +0.9); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 6); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 7); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 8); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 9); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                default: // standard gamepad: https://w3c.github.io/gamepad/#remapping
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 0); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 1); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 2); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_BUTTON(ImGui.NavInput.DpadLeft, 14); // D-Pad Left
+                                    MAP_BUTTON(ImGui.NavInput.DpadRight, 15); // D-Pad Right
+                                    MAP_BUTTON(ImGui.NavInput.DpadUp, 12); // D-Pad Up
+                                    MAP_BUTTON(ImGui.NavInput.DpadDown, 13); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 6); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 7); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                            }
+                        }
+                    }
+                    ImGui.NewFrame();
+                    this.update(dt);
+                    ImGui.EndFrame();
+                    ImGui.Render();
+                    app.renderer.render(this.imgui, this.tex);
+                    this.surface.interactive = this.io.WantCaptureMouse;
+                }
+            };
+            exports_1("ImGuiWindow", ImGuiWindow);
+            canvas = null;
+            //export let gl: WebGL2RenderingContext | null = null;
+            g_ShaderHandle = null;
+            g_VertHandle = null;
+            g_FragHandle = null;
+            g_AttribLocationTex = null;
+            g_AttribLocationProjMtx = null;
+            g_AttribLocationPosition = -1;
+            g_AttribLocationUV = -1;
+            g_AttribLocationColor = -1;
+            g_VaoHandle = null;
+            g_VboHandle = null;
+            g_ElementsHandle = null;
+            g_FontTexture = null;
+            // MouseEvent.button
+            // A number representing a given button:
+            // 0: Main button pressed, usually the left button or the un-initialized state
+            // 1: Auxiliary button pressed, usually the wheel button or the middle button (if present)
+            // 2: Secondary button pressed, usually the right button
+            // 3: Fourth button, typically the Browser Back button
+            // 4: Fifth button, typically the Browser Forward button
+            mouse_button_map = [0, 2, 1, 3, 4];
+        }
+    };
+});
+//# sourceMappingURL=imgui_impl.js.map
\ No newline at end of file
diff --git a/src/imgui_impl.js.map b/src/imgui_impl.js.map
new file mode 100644
index 0000000..bcb545f
--- /dev/null
+++ b/src/imgui_impl.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/src/imgui_impl.ts b/src/imgui_impl.ts
new file mode 100644
index 0000000..a5dad20
--- /dev/null
+++ b/src/imgui_impl.ts
@@ -0,0 +1,797 @@
+import * as ImGui from "imgui-js";
+import { ImVec2 } from "imgui-js";
+import * as PIXI from "pixi.js";
+import * as U from "./utils";
+
+let clipboard_text: string = "";
+
+const contexts: ImGui.ImGuiContext[] = [];
+const contextIOs: ImGui.ImGuiIO[] = [];
+let isFirstWindow: boolean = true;
+
+class ImGuiImplInternalRenderer extends PIXI.ObjectRenderer
+{
+    constructor(r: PIXI.Renderer)
+    {
+        super(r);
+    }
+    render(owner: PIXI.DisplayObject): void
+    {
+        if (!(owner instanceof ImGuiWindowLayer)) return;
+
+        const window: ImGuiWindow = (owner as ImGuiWindowLayer).window;
+
+        const io: ImGui.ImGuiIO = window.io;
+        const draw_data: ImGui.ImDrawData = ImGui.GetDrawData();
+        if (draw_data === null) { throw new Error(); }
+
+        gl || console.log(draw_data);
+
+        // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+        const fb_width: number = io.DisplaySize.x * io.DisplayFramebufferScale.x;
+        const fb_height: number = io.DisplaySize.y * io.DisplayFramebufferScale.y;
+        if (fb_width === 0 || fb_height === 0) {
+            return;
+        }
+        draw_data.ScaleClipRects(io.DisplayFramebufferScale);
+
+        // Backup GL state
+        const last_program: WebGLProgram | null = gl && gl.getParameter(gl.CURRENT_PROGRAM) || null;
+        const last_active_texture: GLenum | null = gl && gl.getParameter(gl.ACTIVE_TEXTURE) || null;
+        gl && gl.activeTexture(gl.TEXTURE0);
+        const last_texture0: WebGLTexture | null = gl && gl.getParameter(gl.TEXTURE_BINDING_2D) || null;
+        const last_vertex_array: WebGLVertexArrayObject | null = gl && gl.getParameter(gl.VERTEX_ARRAY_BINDING) || null;
+        const last_array_buffer: WebGLBuffer | null = gl && gl.getParameter(gl.ARRAY_BUFFER_BINDING) || null;
+        const last_element_array_buffer: WebGLBuffer | null = gl && gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING) || null;
+        // GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+        const last_viewport: Int32Array | null = gl && gl.getParameter(gl.VIEWPORT) || null;
+        const last_scissor_box: Int32Array | null = gl && gl.getParameter(gl.SCISSOR_BOX) || null;
+        const last_blend_src_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_SRC_RGB) || null;
+        const last_blend_dst_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_DST_RGB) || null;
+        const last_blend_src_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_SRC_ALPHA) || null;
+        const last_blend_dst_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_DST_ALPHA) || null;
+        const last_blend_equation_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_EQUATION_RGB) || null;
+        const last_blend_equation_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_EQUATION_ALPHA) || null;
+        const last_enable_blend: GLboolean | null = gl && gl.getParameter(gl.BLEND) || null;
+        const last_enable_cull_face: GLboolean | null = gl && gl.getParameter(gl.CULL_FACE) || null;
+        const last_enable_depth_test: GLboolean | null = gl && gl.getParameter(gl.DEPTH_TEST) || null;
+        const last_enable_scissor_test: GLboolean | null = gl && gl.getParameter(gl.SCISSOR_TEST) || null;
+
+        gl.clearColor(0, 0, 0, 0);
+        gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+        
+        gl && gl.bindVertexArray(g_VaoHandle);
+
+        // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
+        gl && gl.enable(gl.BLEND);
+        gl && gl.blendEquation(gl.FUNC_ADD);
+        gl && gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE);
+        gl && gl.disable(gl.CULL_FACE);
+        gl && gl.disable(gl.DEPTH_TEST);
+        gl && gl.enable(gl.SCISSOR_TEST);
+        // glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+
+        // Setup viewport, orthographic projection matrix
+        // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+        gl && gl.viewport(0, 0, fb_width, fb_height);
+        const L: number = draw_data.DisplayPos.x;
+        const R: number = draw_data.DisplayPos.x + draw_data.DisplaySize.x;
+        const T: number = draw_data.DisplayPos.y;
+        const B: number = draw_data.DisplayPos.y + draw_data.DisplaySize.y;
+        // we actually flip the bottom and top here to match with PIXI's texture usage
+        const ortho_projection: Float32Array = new Float32Array([
+            2.0 / (R - L),     0.0,                0.0, 0.0,
+            0.0,               2.0 / (B - T),      0.0, 0.0,
+            0.0,               0.0,               -1.0, 0.0,
+            (R + L) / (L - R), (B + T) / (T - B),  0.0, 1.0,
+        ]);
+        gl && gl.useProgram(g_ShaderHandle);
+        gl && gl.uniform1i(g_AttribLocationTex, 0);
+        gl && g_AttribLocationProjMtx && gl.uniformMatrix4fv(g_AttribLocationProjMtx, false, ortho_projection);
+
+        // Render command lists
+        gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+        gl && gl.enableVertexAttribArray(g_AttribLocationPosition);
+        gl && gl.enableVertexAttribArray(g_AttribLocationUV);
+        gl && gl.enableVertexAttribArray(g_AttribLocationColor);
+
+        gl && gl.vertexAttribPointer(g_AttribLocationPosition, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertPosOffset);
+        gl && gl.vertexAttribPointer(g_AttribLocationUV, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertUVOffset);
+        gl && gl.vertexAttribPointer(g_AttribLocationColor, 4, gl.UNSIGNED_BYTE, true, ImGui.ImDrawVertSize, ImGui.ImDrawVertColOffset);
+
+        // Draw
+        const pos = draw_data.DisplayPos;
+        const idx_buffer_type: GLenum = gl && ((ImGui.ImDrawIdxSize === 4) ? gl.UNSIGNED_INT : gl.UNSIGNED_SHORT) || 0;
+        draw_data.IterateDrawLists((draw_list: ImGui.ImDrawList): void => {
+            gl || console.log(draw_list);
+            gl || console.log("VtxBuffer.length", draw_list.VtxBuffer.length);
+            gl || console.log("IdxBuffer.length", draw_list.IdxBuffer.length);
+            
+            let idx_buffer_offset: number = 0;
+
+            gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+            gl && gl.bufferData(gl.ARRAY_BUFFER, draw_list.VtxBuffer, gl.STREAM_DRAW);
+            gl && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+            gl && gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, draw_list.IdxBuffer, gl.STREAM_DRAW);
+
+            draw_list.IterateDrawCmds((draw_cmd: ImGui.ImDrawCmd): void => {
+                gl || console.log(draw_cmd);
+                gl || console.log("ElemCount", draw_cmd.ElemCount);
+                gl || console.log("ClipRect", draw_cmd.ClipRect.x, draw_cmd.ClipRect.y, draw_cmd.ClipRect.z - draw_cmd.ClipRect.x, draw_cmd.ClipRect.w - draw_cmd.ClipRect.y);
+                gl || console.log("TextureId", draw_cmd.TextureId);
+                if (!gl) {
+                    console.log("i: pos.x pos.y uv.x uv.y col");
+                    for (let i = 0; i < Math.min(3, draw_cmd.ElemCount); ++i) {
+                        const view: ImGui.ImDrawVert = new ImGui.ImDrawVert(draw_list.VtxBuffer.buffer, draw_list.VtxBuffer.byteOffset + i * ImGui.ImDrawVertSize);
+                        console.log(`${i}: ${view.pos[0].toFixed(2)} ${view.pos[1].toFixed(2)} ${view.uv[0].toFixed(5)} ${view.uv[1].toFixed(5)} ${("00000000" + view.col[0].toString(16)).substr(-8)}`);
+                    }
+                }
+
+                if (draw_cmd.UserCallback !== null) {
+                    // User callback (registered via ImDrawList::AddCallback)
+                    draw_cmd.UserCallback(draw_list, draw_cmd);
+                } else {
+                    const clip_rect = new ImGui.ImVec4(draw_cmd.ClipRect.x - pos.x, draw_cmd.ClipRect.y - pos.y, draw_cmd.ClipRect.z - pos.x, draw_cmd.ClipRect.w - pos.y);
+                    if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0 && clip_rect.w >= 0.0) {
+                        // Apply scissor/clipping rectangle
+                        gl && gl.scissor(clip_rect.x, clip_rect.y, clip_rect.z - clip_rect.x, clip_rect.w - clip_rect.y);
+
+                        // Bind texture, Draw
+                        gl && gl.bindTexture(gl.TEXTURE_2D, draw_cmd.TextureId);
+                        gl && gl.drawElements(gl.TRIANGLES, draw_cmd.ElemCount, idx_buffer_type, idx_buffer_offset);
+                    }
+                }
+
+                idx_buffer_offset += draw_cmd.ElemCount * ImGui.ImDrawIdxSize;
+            });
+        });
+
+        // Restore modified GL state
+        
+        gl && (last_program !== null) && gl.useProgram(last_program);
+        gl && (last_texture0 !== null) && gl.bindTexture(gl.TEXTURE_2D, last_texture0);
+        gl && (last_active_texture !== null) && gl.activeTexture(last_active_texture);
+        gl && gl.disableVertexAttribArray(g_AttribLocationPosition);
+        gl && gl.disableVertexAttribArray(g_AttribLocationUV);
+        gl && gl.disableVertexAttribArray(g_AttribLocationColor);
+        gl && (last_vertex_array !== null) && gl.bindVertexArray(last_vertex_array);
+        gl && (last_array_buffer !== null) && gl.bindBuffer(gl.ARRAY_BUFFER, last_array_buffer);
+        gl && (last_element_array_buffer !== null) && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+        gl && (last_viewport !== null) && gl.viewport(last_viewport[0], last_viewport[1], last_viewport[2], last_viewport[3]);
+        gl && (last_scissor_box !== null) && gl.scissor(last_scissor_box[0], last_scissor_box[1], last_scissor_box[2], last_scissor_box[3]);
+        gl && (last_blend_equation_rgb !== null && last_blend_equation_alpha !== null) && gl.blendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+        gl && (last_blend_src_rgb !== null && last_blend_src_alpha !== null && last_blend_dst_rgb !== null && last_blend_dst_alpha !== null) && gl.blendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
+        gl && (last_enable_blend ? gl.enable(gl.BLEND) : gl.disable(gl.BLEND));
+        gl && (last_enable_cull_face ? gl.enable(gl.CULL_FACE) : gl.disable(gl.CULL_FACE));
+        gl && (last_enable_depth_test ? gl.enable(gl.DEPTH_TEST) : gl.disable(gl.DEPTH_TEST));
+        gl && (last_enable_scissor_test ? gl.enable(gl.SCISSOR_TEST) : gl.disable(gl.SCISSOR_TEST));
+        // glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
+    }
+}
+
+let gl: WebGL2RenderingContext = null;
+let app: PIXI.Application = null;
+
+class ImGuiWindowLayer extends PIXI.Sprite
+{
+    public readonly window: ImGuiWindow;
+    constructor(window: ImGuiWindow, tex:PIXI.RenderTexture)
+    {
+        super();
+        this.pluginName = "imgui_renderer";
+        this.window = window;
+    }
+}
+
+export class ImGuiWindow extends PIXI.Container
+{
+    public readonly ctx: ImGui.ImGuiContext;
+    public readonly io: ImGui.ImGuiIO;
+    private sizeX: number;
+    private sizeY: number;
+    public getSizeX(): number { return this.sizeX; }
+    public getSizeY(): number { return this.sizeY; }
+
+    private baseTex: PIXI.BaseRenderTexture = new PIXI.BaseRenderTexture({scaleMode: PIXI.SCALE_MODES.LINEAR, resolution: 1, type: PIXI.TYPES.FLOAT, format: PIXI.FORMATS.RGBA});
+    private tex: PIXI.RenderTexture = new PIXI.RenderTexture(this.baseTex);
+    
+    private surface: PIXI.Sprite = new PIXI.Sprite(this.tex);
+    private imgui: ImGuiWindowLayer = new ImGuiWindowLayer(this, this.tex);
+    
+    private update: (dt: number) => void;
+    constructor(sizeX: number, sizeY: number, update: (dt: number) => void)
+    {
+        super();
+
+        this.ctx = ImGui.CreateContext(contextIOs.length == 0 ? null : contextIOs[0].Fonts);
+        ImGui.SetCurrentContext(this.ctx);
+        this.io = ImGui.GetIO();
+
+        contexts.push(this.ctx);
+        contextIOs.push(this.io);
+
+        if (contexts.length == 1)
+        {
+            CreateFontsTexture();
+        }
+
+        if (typeof(window) !== "undefined") {
+            ImGui.LoadIniSettingsFromMemory(window.localStorage.getItem("imgui.ini") || "");
+        }
+
+        if (typeof(navigator) !== "undefined") {
+            this.io.ConfigMacOSXBehaviors = navigator.platform.match(/Mac/) !== null;
+        }
+
+        this.io.SetClipboardTextFn = (user_data: any, text: string): void => {
+            clipboard_text = text;
+            // console.log(`set clipboard_text: "${clipboard_text}"`);
+            if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+                // console.log(`clipboard.writeText: "${clipboard_text}"`);
+                (navigator as any).clipboard.writeText(clipboard_text).then((): void => {
+                    // console.log(`clipboard.writeText: "${clipboard_text}" done.`);
+                });
+            }
+        };
+        this.io.GetClipboardTextFn = (user_data: any): string => {
+            // if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+            //     console.log(`clipboard.readText: "${clipboard_text}"`);
+            //     (navigator as any).clipboard.readText().then((text: string): void => {
+            //         clipboard_text = text;
+            //         console.log(`clipboard.readText: "${clipboard_text}" done.`);
+            //     });
+            // }
+            // console.log(`get clipboard_text: "${clipboard_text}"`);
+            return clipboard_text;
+        };
+        this.io.ClipboardUserData = null;
+
+        // Setup back-end capabilities flags
+        this.io.BackendFlags |= ImGui.BackendFlags.HasMouseCursors;   // We can honor GetMouseCursor() values (optional)
+
+        // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+        this.io.KeyMap[ImGui.Key.Tab] = 9;
+        this.io.KeyMap[ImGui.Key.LeftArrow] = 37;
+        this.io.KeyMap[ImGui.Key.RightArrow] = 39;
+        this.io.KeyMap[ImGui.Key.UpArrow] = 38;
+        this.io.KeyMap[ImGui.Key.DownArrow] = 40;
+        this.io.KeyMap[ImGui.Key.PageUp] = 33;
+        this.io.KeyMap[ImGui.Key.PageDown] = 34;
+        this.io.KeyMap[ImGui.Key.Home] = 36;
+        this.io.KeyMap[ImGui.Key.End] = 35;
+        this.io.KeyMap[ImGui.Key.Insert] = 45;
+        this.io.KeyMap[ImGui.Key.Delete] = 46;
+        this.io.KeyMap[ImGui.Key.Backspace] = 8;
+        this.io.KeyMap[ImGui.Key.Space] = 32;
+        this.io.KeyMap[ImGui.Key.Enter] = 13;
+        this.io.KeyMap[ImGui.Key.Escape] = 27;
+        this.io.KeyMap[ImGui.Key.A] = 65;
+        this.io.KeyMap[ImGui.Key.C] = 67;
+        this.io.KeyMap[ImGui.Key.V] = 86;
+        this.io.KeyMap[ImGui.Key.X] = 88;
+        this.io.KeyMap[ImGui.Key.Y] = 89;
+        this.io.KeyMap[ImGui.Key.Z] = 90;
+
+        this.update = update;
+        this.resize(sizeX, sizeY);
+        this.imgui.pluginName = 'imgui_renderer';
+        this.addChild(this.surface);
+        app.renderer.plugins.interaction.addListener("mousedown", this.mouseDown.bind(this));
+        app.renderer.plugins.interaction.addListener("mouseup", this.mouseUp.bind(this));
+        app.ticker.add(this.updateInternal.bind(this));
+
+        this.interactive = false;
+        this.interactiveChildren = true;
+
+        this.surface.interactive = false;
+    }
+    withContext(cb: () => void)
+    {
+        ImGui.SetCurrentContext(this.ctx);
+        cb();
+    }
+    mouseDown(e: PIXI.interaction.InteractionEvent): void
+    {
+        if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface)
+        {
+            this.io.MouseDown[mouse_button_map[0]] = true;
+        }
+    }
+    mouseUp(e: PIXI.interaction.InteractionEvent): void
+    {
+        if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface)
+        {
+            this.io.MouseDown[mouse_button_map[0]] = false;
+        }
+    }
+    resize(sizeX: number, sizeY: number)
+    {
+        this.sizeX = sizeX;
+        this.sizeY = sizeY;
+        this.baseTex.resize(sizeX, sizeY);
+        this.tex.frame = new PIXI.Rectangle(0, 0, this.baseTex.width, this.baseTex.height);
+    }
+    updateInternal(deltaTime: number)
+    {
+        const dt: number = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+
+        ImGui.SetCurrentContext(this.ctx);
+
+        if (this.io.WantSaveIniSettings) {
+            this.io.WantSaveIniSettings = false;
+            if (typeof(window) !== "undefined") {
+                window.localStorage.setItem("imgui.ini", ImGui.SaveIniSettingsToMemory());
+            }
+        }
+
+        this.io.DisplaySize.x = this.sizeX;
+        this.io.DisplaySize.y = this.sizeY;
+        this.io.DisplayFramebufferScale.x = 1;
+        this.io.DisplayFramebufferScale.y = 1;
+
+        this.io.DeltaTime = dt;
+
+        let localPos: PIXI.Point = this.toLocal(app.renderer.plugins.interaction.mouse.global);
+        if (localPos.x < 0 || localPos.y < 0 || localPos.x >= this.sizeX || localPos.y >= this.sizeY)
+        {
+            localPos = new PIXI.Point(-Number.MAX_VALUE, -Number.MAX_VALUE);
+        }
+        this.io.MousePos.x = localPos.x;
+        this.io.MousePos.y = localPos.y;
+
+        if (this.io.WantSetMousePos) {
+            console.log("TODO: MousePos", this.io.MousePos.x, this.io.MousePos.y);
+        }
+
+        if (typeof(document) !== "undefined") {
+            if (this.io.MouseDrawCursor) {
+                document.body.style.cursor = "none";
+            } else {
+                switch (ImGui.GetMouseCursor()) {
+                    case ImGui.MouseCursor.None: document.body.style.cursor = "none"; break;
+                    default: case ImGui.MouseCursor.Arrow: document.body.style.cursor = "default"; break;
+                    case ImGui.MouseCursor.TextInput: document.body.style.cursor = "text"; break;         // When hovering over InputText, etc.
+                    case ImGui.MouseCursor.ResizeAll: document.body.style.cursor = "move"; break;         // Unused
+                    case ImGui.MouseCursor.ResizeNS: document.body.style.cursor = "ns-resize"; break;     // When hovering over an horizontal border
+                    case ImGui.MouseCursor.ResizeEW: document.body.style.cursor = "ew-resize"; break;     // When hovering over a vertical border or a column
+                    case ImGui.MouseCursor.ResizeNESW: document.body.style.cursor = "nesw-resize"; break; // When hovering over the bottom-left corner of a window
+                    case ImGui.MouseCursor.ResizeNWSE: document.body.style.cursor = "nwse-resize"; break; // When hovering over the bottom-right corner of a window
+                    case ImGui.MouseCursor.Hand: document.body.style.cursor = "move"; break;
+                }
+            }
+        }
+
+        // Gamepad navigation mapping [BETA]
+        for (let i = 0; i < this.io.NavInputs.length; ++i) {
+            this.io.NavInputs[i] = 0.0;
+        }
+        if (this.io.ConfigFlags & ImGui.ConfigFlags.NavEnableGamepad) {
+            // Update gamepad inputs
+            const gamepads: (Gamepad | null)[] = (typeof(navigator) !== "undefined" && typeof(navigator.getGamepads) === "function") ? navigator.getGamepads() : [];
+            for (let i = 0; i < gamepads.length; ++i) {
+                const gamepad: Gamepad | null = gamepads[i];
+                if (!gamepad) { continue; }
+                const buttons_count: number = gamepad.buttons.length;
+                const axes_count: number = gamepad.axes.length;
+                const MAP_BUTTON = function(NAV_NO: number, BUTTON_NO: number): void {
+                    if (!gamepad) { return; }
+                    if (buttons_count > BUTTON_NO && gamepad.buttons[BUTTON_NO].pressed)
+                        this.io.NavInputs[NAV_NO] = 1.0;
+                }
+                const MAP_ANALOG = function(NAV_NO: number, AXIS_NO: number, V0: number, V1: number): void {
+                    if (!gamepad) { return; }
+                    let v: number = (axes_count > AXIS_NO) ? gamepad.axes[AXIS_NO] : V0;
+                    v = (v - V0) / (V1 - V0);
+                    if (v > 1.0) v = 1.0;
+                    if (this.io.NavInputs[NAV_NO] < v) this.io.NavInputs[NAV_NO] = v;
+                }
+                // TODO: map input based on vendor and product id
+                // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/id
+                const match: RegExpMatchArray | null = gamepad.id.match(/^([0-9a-f]{4})-([0-9a-f]{4})-.*$/);
+                const match_chrome: RegExpMatchArray | null = gamepad.id.match(/^.*\(.*Vendor: ([0-9a-f]{4}) Product: ([0-9a-f]{4})\).*$/);
+                const vendor: string = (match && match[1]) || (match_chrome && match_chrome[1]) || "0000";
+                const product: string = (match && match[2]) || (match_chrome && match_chrome[2]) || "0000";
+                switch (vendor + product) {
+                    case "046dc216": // Logitech Logitech Dual Action (Vendor: 046d Product: c216)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    1); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      2); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        0); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_ANALOG(ImGui.NavInput.DpadLeft,    4, -0.3, -0.9); // D-Pad Left
+                    MAP_ANALOG(ImGui.NavInput.DpadRight,   4, +0.3, +0.9); // D-Pad Right
+                    MAP_ANALOG(ImGui.NavInput.DpadUp,      5, -0.3, -0.9); // D-Pad Up
+                    MAP_ANALOG(ImGui.NavInput.DpadDown,    5, +0.3, +0.9); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   6); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   7); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    case "046dc21d": // Logitech Gamepad F310 (STANDARD GAMEPAD Vendor: 046d Product: c21d)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    0); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      1); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        2); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_BUTTON(ImGui.NavInput.DpadLeft,    14); // D-Pad Left
+                    MAP_BUTTON(ImGui.NavInput.DpadRight,   15); // D-Pad Right
+                    MAP_BUTTON(ImGui.NavInput.DpadUp,      12); // D-Pad Up
+                    MAP_BUTTON(ImGui.NavInput.DpadDown,    13); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_ANALOG(ImGui.NavInput.TweakSlow,   6, +0.3, +0.9); // L2 / LT
+                    MAP_ANALOG(ImGui.NavInput.TweakFast,   7, +0.3, +0.9); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    case "2dc86001": // 8Bitdo SN30 Pro  8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6001)
+                    case "2dc86101": // 8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6101)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    1); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      0); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        4); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_ANALOG(ImGui.NavInput.DpadLeft,    6, -0.3, -0.9); // D-Pad Left
+                    MAP_ANALOG(ImGui.NavInput.DpadRight,   6, +0.3, +0.9); // D-Pad Right
+                    MAP_ANALOG(ImGui.NavInput.DpadUp,      7, -0.3, -0.9); // D-Pad Up
+                    MAP_ANALOG(ImGui.NavInput.DpadDown,    7, +0.3, +0.9); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   6); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   7); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   8); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   9); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    default: // standard gamepad: https://w3c.github.io/gamepad/#remapping
+                    MAP_BUTTON(ImGui.NavInput.Activate,    0); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      1); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        2); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_BUTTON(ImGui.NavInput.DpadLeft,    14); // D-Pad Left
+                    MAP_BUTTON(ImGui.NavInput.DpadRight,   15); // D-Pad Right
+                    MAP_BUTTON(ImGui.NavInput.DpadUp,      12); // D-Pad Up
+                    MAP_BUTTON(ImGui.NavInput.DpadDown,    13); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   6); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   7); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                }
+            }
+        }
+
+        ImGui.NewFrame();
+
+        this.update(dt);
+
+        ImGui.EndFrame();
+        ImGui.Render();
+
+        app.renderer.render(this.imgui, this.tex);
+
+        this.surface.interactive = this.io.WantCaptureMouse;
+    }
+}
+
+let canvas: HTMLCanvasElement | null = null;
+
+//export let gl: WebGL2RenderingContext | null = null;
+let g_ShaderHandle: WebGLProgram | null = null;
+let g_VertHandle: WebGLShader | null = null;
+let g_FragHandle: WebGLShader | null = null;
+let g_AttribLocationTex: WebGLUniformLocation | null = null;
+let g_AttribLocationProjMtx: WebGLUniformLocation | null = null;
+let g_AttribLocationPosition: GLint = -1;
+let g_AttribLocationUV: GLint = -1;
+let g_AttribLocationColor: GLint = -1;
+let g_VaoHandle: WebGLVertexArrayObject = null;
+let g_VboHandle: WebGLBuffer | null = null;
+let g_ElementsHandle: WebGLBuffer | null = null;
+let g_FontTexture: WebGLTexture | null = null;
+
+function document_on_copy(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        event.clipboardData.setData("text/plain", clipboard_text);
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function document_on_cut(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        event.clipboardData.setData("text/plain", clipboard_text);
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function document_on_paste(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        clipboard_text = event.clipboardData.getData("text/plain");
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function window_on_gamepadconnected(event: any /* GamepadEvent */): void {
+    console.log("Gamepad connected at index %d: %s. %d buttons, %d axes.",
+    event.gamepad.index, event.gamepad.id,
+    event.gamepad.buttons.length, event.gamepad.axes.length);
+}
+
+function window_on_gamepaddisconnected(event: any /* GamepadEvent */): void {
+    console.log("Gamepad disconnected at index %d: %s.",
+    event.gamepad.index, event.gamepad.id);
+}
+
+function canvas_on_blur(event: FocusEvent): void {
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = false;
+        io.KeyShift = false;
+        io.KeyAlt = false;
+        io.KeySuper = false;
+        for (let i = 0; i < io.KeysDown.length; ++i) {
+            io.KeysDown[i] = false;
+        }
+        for (let i = 0; i < io.MouseDown.length; ++i) {
+            io.MouseDown[i] = false;
+        }
+    }
+}
+
+function canvas_on_keydown(event: KeyboardEvent): void {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = event.ctrlKey;
+        io.KeyShift = event.shiftKey;
+        io.KeyAlt = event.altKey;
+        io.KeySuper = event.metaKey;
+        ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+        io.KeysDown[event.keyCode] = true;
+        // forward to the keypress event
+        if (/*io.WantCaptureKeyboard ||*/ event.key === "Tab") {
+            event.preventDefault();
+        }
+    }
+}
+
+function canvas_on_keyup(event: KeyboardEvent): void  {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = event.ctrlKey;
+        io.KeyShift = event.shiftKey;
+        io.KeyAlt = event.altKey;
+        io.KeySuper = event.metaKey;
+        ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+        io.KeysDown[event.keyCode] = false;
+        if (io.WantCaptureKeyboard) {
+            event.preventDefault();
+        }
+    }
+}
+
+function canvas_on_keypress(event: KeyboardEvent): void  {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.AddInputCharacter(event.charCode);
+        if (io.WantCaptureKeyboard) {
+            event.preventDefault();
+        }
+    }
+}
+
+// MouseEvent.button
+// A number representing a given button:
+// 0: Main button pressed, usually the left button or the un-initialized state
+// 1: Auxiliary button pressed, usually the wheel button or the middle button (if present)
+// 2: Secondary button pressed, usually the right button
+// 3: Fourth button, typically the Browser Back button
+// 4: Fifth button, typically the Browser Forward button
+const mouse_button_map: number[] = [ 0, 2, 1, 3, 4 ];
+
+function canvas_on_contextmenu(event: Event): void  {
+    for (var io of contextIOs)
+    {
+        if (io.WantCaptureMouse) { event.preventDefault(); }
+    }
+}
+
+function canvas_on_wheel(event: WheelEvent): void  {
+    for (var io of contextIOs)
+    {
+        let scale: number = 1.0;
+        switch (event.deltaMode) {
+            case event.DOM_DELTA_PIXEL: scale = 0.01; break;
+            case event.DOM_DELTA_LINE: scale = 0.2; break;
+            case event.DOM_DELTA_PAGE: scale = 1.0; break;
+        }
+        io.MouseWheelH = event.deltaX * scale;
+        io.MouseWheel = -event.deltaY * scale; // Mouse wheel: 1 unit scrolls about 5 lines text.
+        if (io.WantCaptureMouse) {
+            event.preventDefault();
+        }
+    }
+}
+
+export function PrePIXIInit(): void
+{
+    PIXI.Renderer.registerPlugin("imgui_renderer", U.fromConstructor(ImGuiImplInternalRenderer));
+}
+
+export function Init(_app: PIXI.Application): void {
+    // Setup Dear ImGui binding
+    ImGui.IMGUI_CHECKVERSION();
+
+    if (typeof(document) !== "undefined") {
+        document.body.addEventListener("copy", document_on_copy);
+        document.body.addEventListener("cut", document_on_cut);
+        document.body.addEventListener("paste", document_on_paste);
+    }
+
+    if (typeof(window) !== "undefined") {
+        window.addEventListener("gamepadconnected", window_on_gamepadconnected);
+        window.addEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+    }
+
+    app = _app;
+    gl = (app.renderer as any).gl;
+    canvas = app.view;
+
+    gl.getExtension("EXT_color_buffer_float");
+
+    if (canvas !== null) {
+        canvas.style.touchAction = "none"; // Disable browser handling of all panning and zooming gestures.
+        canvas.addEventListener("blur", canvas_on_blur);
+        canvas.addEventListener("keydown", canvas_on_keydown);
+        canvas.addEventListener("keyup", canvas_on_keyup);
+        canvas.addEventListener("keypress", canvas_on_keypress);
+        canvas.addEventListener("contextmenu", canvas_on_contextmenu);
+        canvas.addEventListener("wheel", canvas_on_wheel);
+    }
+
+    CreateDeviceObjects();
+}
+
+export function Shutdown(): void {
+    DestroyDeviceObjects();
+
+    if (canvas !== null) {
+        canvas.removeEventListener("blur", canvas_on_blur);
+        canvas.removeEventListener("keydown", canvas_on_keydown);
+        canvas.removeEventListener("keyup", canvas_on_keyup);
+        canvas.removeEventListener("keypress", canvas_on_keypress);
+        canvas.removeEventListener("contextmenu", canvas_on_contextmenu);
+        canvas.removeEventListener("wheel", canvas_on_wheel);
+    }
+
+    app = null;
+    canvas = null;
+
+    if (typeof(window) !== "undefined") {
+        window.removeEventListener("gamepadconnected", window_on_gamepadconnected);
+        window.removeEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+    }
+
+    if (typeof(document) !== "undefined") {
+        document.body.removeEventListener("copy", document_on_copy);
+        document.body.removeEventListener("cut", document_on_cut);
+        document.body.removeEventListener("paste", document_on_paste);
+    }
+}
+
+function CreateFontsTexture(): void {
+    const io = ImGui.GetIO();
+
+    // Backup GL state
+    const last_texture: WebGLTexture | null = gl && gl.getParameter(gl.TEXTURE_BINDING_2D);
+
+    // Build texture atlas
+    // const width: number = 256;
+    // const height: number = 256;
+    // const pixels: Uint8Array = new Uint8Array(4 * width * height).fill(0xff);
+    const { width, height, pixels } = io.Fonts.GetTexDataAsRGBA32();   // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+    // console.log(`font texture ${width} x ${height} @ ${pixels.length}`);
+
+    // Upload texture to graphics system
+    g_FontTexture = gl && gl.createTexture();
+    gl && gl.bindTexture(gl.TEXTURE_2D, g_FontTexture);
+    gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+    gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+    // gl && gl.pixelStorei(gl.UNPACK_ROW_LENGTH); // WebGL2
+    gl && gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+
+    // Store our identifier
+    io.Fonts.TexID = g_FontTexture || { foo: "bar" };
+    // console.log("font texture id", g_FontTexture);
+
+    // Restore modified GL state
+    gl && last_texture && gl.bindTexture(gl.TEXTURE_2D, last_texture);
+}
+
+function DestroyFontsTexture(): void {
+    const io = ImGui.GetIO();
+    io.Fonts.TexID = null;
+    gl && gl.deleteTexture(g_FontTexture); g_FontTexture = null;
+}
+
+function CreateDeviceObjects(): void {
+    const vertex_shader: string[] = [
+        "#version 300 es",
+        "uniform mat4 ProjMtx;",
+        "in vec2 Position;",
+        "in vec2 UV;",
+        "in vec4 Color;",
+        "out vec2 Frag_UV;",
+        "out vec4 Frag_Color;",
+        "void main() {",
+        "	Frag_UV = UV;",
+        "	Frag_Color = Color;",
+        "	gl_Position = ProjMtx * vec4(Position.xy,0,1);",
+        "}",
+    ];
+
+    const fragment_shader: string[] = [
+        "#version 300 es",
+        "precision mediump float;", // WebGL requires precision specifiers
+        "uniform sampler2D Texture;",
+        "in vec2 Frag_UV;",
+        "in vec4 Frag_Color;",
+        "out vec4 OutColor;",
+        "void main() {",
+        "	OutColor = Frag_Color * texture(Texture, Frag_UV);",
+        "}",
+    ];
+
+    g_ShaderHandle = gl && gl.createProgram();
+    g_VertHandle = gl && gl.createShader(gl.VERTEX_SHADER);
+    g_FragHandle = gl && gl.createShader(gl.FRAGMENT_SHADER);
+    gl && gl.shaderSource(g_VertHandle as WebGLShader, vertex_shader.join("\n"));
+    gl && gl.shaderSource(g_FragHandle as WebGLShader, fragment_shader.join("\n"));
+    gl && gl.compileShader(g_VertHandle as WebGLShader);
+    gl && gl.compileShader(g_FragHandle as WebGLShader);
+    gl && gl.attachShader(g_ShaderHandle as WebGLProgram, g_VertHandle as WebGLShader);
+    gl && gl.attachShader(g_ShaderHandle as WebGLProgram, g_FragHandle as WebGLShader);
+    gl && gl.linkProgram(g_ShaderHandle as WebGLProgram);
+
+    g_AttribLocationTex = gl && gl.getUniformLocation(g_ShaderHandle as WebGLProgram, "Texture");
+    g_AttribLocationProjMtx = gl && gl.getUniformLocation(g_ShaderHandle as WebGLProgram, "ProjMtx");
+    g_AttribLocationPosition = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "Position") || 0;
+    g_AttribLocationUV = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "UV") || 0;
+    g_AttribLocationColor = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "Color") || 0;
+
+    g_VaoHandle = gl && gl.createVertexArray();
+    g_VboHandle = gl && gl.createBuffer();
+    g_ElementsHandle = gl && gl.createBuffer();
+
+}
+
+function DestroyDeviceObjects(): void {
+    DestroyFontsTexture();
+
+    gl && gl.deleteVertexArray(g_VaoHandle); g_VaoHandle = null;
+    gl && gl.deleteBuffer(g_VboHandle); g_VboHandle = null;
+    gl && gl.deleteBuffer(g_ElementsHandle); g_ElementsHandle = null;
+
+    g_AttribLocationTex = null;
+    g_AttribLocationProjMtx = null;
+    g_AttribLocationPosition = -1;
+    g_AttribLocationUV = -1;
+    g_AttribLocationColor = -1;
+
+    gl && gl.deleteProgram(g_ShaderHandle); g_ShaderHandle = null;
+    gl && gl.deleteShader(g_VertHandle); g_VertHandle = null;
+    gl && gl.deleteShader(g_FragHandle); g_FragHandle = null;
+}
diff --git a/src/main.js b/src/main.js
index f763140..0c19249 100644
--- a/src/main.js
+++ b/src/main.js
@@ -1,4 +1,4 @@
-System.register(["../imgui-js/example/imgui_impl", "imgui-js"], function (exports_1, context_1) {
+System.register(["./imgui_impl", "imgui-js", "pixi.js", "./utils"], function (exports_1, context_1) {
     "use strict";
     var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
         return new (P || (P = Promise))(function (resolve, reject) {
@@ -8,7 +8,7 @@
             step((generator = generator.apply(thisArg, _arguments || [])).next());
         });
     };
-    var ImGui_Impl, ImGui, imgui_js_1, imgui_js_2, clearColor, windowOpen, text;
+    var ImGui_Impl, imgui_impl_1, ImGui, imgui_js_1, imgui_js_2, PIXI, U, clearColor;
     var __moduleName = context_1 && context_1.id;
     function main() {
         return __awaiter(this, void 0, void 0, function* () {
@@ -20,74 +20,88 @@
     function init() {
         console.log("init()");
         console.log("Total allocated space (uordblks) @ _init:", ImGui.bind.mallinfo().uordblks);
-        // Setup Dear ImGui binding
-        ImGui.IMGUI_CHECKVERSION();
-        ImGui.CreateContext();
-        const io = ImGui.GetIO();
-        io.ConfigFlags |= ImGui.ConfigFlags.NavEnableKeyboard; // Enable Keyboard Controls
-        // Setup style
-        ImGui.StyleColorsLight();
+        ImGui_Impl.PrePIXIInit();
+        let settings = { width: 1, height: 1, antialias: true, backgroundColor: U.vec2col(clearColor) };
+        let app = new PIXI.Application(settings);
         const output = document.getElementById("output") || document.body;
-        const canvas = document.createElement("canvas");
-        output.appendChild(canvas);
-        canvas.tabIndex = 1;
-        canvas.style.position = "absolute";
-        canvas.style.left = "0px";
-        canvas.style.right = "0px";
-        canvas.style.top = "0px";
-        canvas.style.bottom = "0px";
-        canvas.style.width = "100%";
-        canvas.style.height = "100%";
-        ImGui_Impl.Init(canvas);
-        window.requestAnimationFrame(loop);
+        output.appendChild(app.view);
+        app.view.tabIndex = 1;
+        app.view.style.position = "absolute";
+        app.view.style.left = "0px";
+        app.view.style.right = "0px";
+        app.view.style.top = "0px";
+        app.view.style.bottom = "0px";
+        app.view.style.width = "100%";
+        app.view.style.height = "100%";
+        ImGui_Impl.Init(app);
+        app.ticker.add((deltaTime) => {
+            const dt = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+            app.render();
+        });
+        let resizeFunc = function () {
+            app.renderer.resize(window.innerWidth, window.innerHeight);
+        };
+        let bg = new PIXI.Graphics();
+        bg.beginFill(0xFF0000);
+        bg.drawRect(100, 100, 300, 300);
+        bg.endFill();
+        let styleCb = () => { ImGui.StyleColorsLight(); };
+        const imgui = new imgui_impl_1.ImGuiWindow(512, 512, makeUpdate());
+        const imgui2 = new imgui_impl_1.ImGuiWindow(512, 512, makeUpdate2());
+        imgui2.x = 200;
+        imgui2.y = 400;
+        imgui.withContext(styleCb);
+        imgui2.withContext(styleCb);
+        app.stage.addChild(imgui);
+        app.stage.addChild(bg);
+        app.stage.addChild(imgui2);
+        window.onresize = resizeFunc;
+        resizeFunc();
     }
-    function render(timeElapsed) {
-        ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(600, 400), ImGui.ImGuiCond.Always);
-        ImGui.Begin("Test Window", (_ = windowOpen) => windowOpen = _, 0);
-        if (ImGui.Button("Add Text")) {
-            text += "A";
-        }
-        ImGui.Text(text);
-        ImGui.End();
+    function makeUpdate() {
+        let text = "text";
+        return (timeElapsed) => {
+            ImGui.SetNextWindowPos(new imgui_js_2.ImVec2(0, 0));
+            ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(500, 500), ImGui.ImGuiCond.Always);
+            ImGui.Begin("Test Window");
+            if (ImGui.Button("Add Text")) {
+                text += "A";
+            }
+            ImGui.Text(text);
+            ImGui.End();
+        };
     }
-    function loop(timeElapsed) {
-        ImGui_Impl.NewFrame(timeElapsed);
-        ImGui.NewFrame();
-        render(timeElapsed);
-        ImGui.EndFrame();
-        // Rendering
-        ImGui.Render();
-        const gl = ImGui_Impl.gl;
-        if (gl) {
-            gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
-            gl.clearColor(clearColor.x, clearColor.y, clearColor.z, clearColor.w);
-            gl.clear(gl.COLOR_BUFFER_BIT);
-            //gl.useProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound
-        }
-        const ctx = ImGui_Impl.ctx;
-        if (ctx) {
-            // ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-            ctx.fillStyle = `rgba(${clearColor.x * 0xff}, ${clearColor.y * 0xff}, ${clearColor.z * 0xff}, ${clearColor.w})`;
-            ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-        }
-        ImGui_Impl.RenderDrawData(ImGui.GetDrawData());
-        window.requestAnimationFrame(loop);
+    function makeUpdate2() {
+        let text = "";
+        return (timeElapsed) => {
+            ImGui.SetNextWindowPos(new imgui_js_2.ImVec2(0, 0));
+            ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(500, 500), ImGui.ImGuiCond.Always);
+            ImGui.Begin("Test Window 2");
+            ImGui.InputText("Input: ", (_ = text) => text = _);
+            ImGui.Text(text);
+            ImGui.End();
+        };
     }
     return {
         setters: [
             function (ImGui_Impl_1) {
                 ImGui_Impl = ImGui_Impl_1;
+                imgui_impl_1 = ImGui_Impl_1;
             },
             function (ImGui_1) {
                 ImGui = ImGui_1;
                 imgui_js_1 = ImGui_1;
                 imgui_js_2 = ImGui_1;
+            },
+            function (PIXI_1) {
+                PIXI = PIXI_1;
+            },
+            function (U_1) {
+                U = U_1;
             }
         ],
         execute: function () {
             clearColor = new imgui_js_1.ImVec4(0.7, 0.9, 1, 1);
-            windowOpen = true;
-            text = "text";
             (function () {
                 if (document.readyState == "complete") {
                     main();
diff --git a/src/main.js.map b/src/main.js.map
index d10898e..c4ec491 100644
--- a/src/main.js.map
+++ b/src/main.js.map
@@ -1 +1 @@
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\ No newline at end of file

diff --git a/.gitmodules b/.gitmodules
index d6b45d7..fc2be7a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,7 @@
 [submodule "emsdk"]
 	path = emsdk
 	url = https://github.com/emscripten-core/emsdk.git
+	ignore = untracked
+[submodule "pixi.js"]
+	path = pixi.js
+	url = https://git.mhack.io/git/mark/pixi.js.git
diff --git a/imgui-js b/imgui-js
index 9f694ef..9536eca 160000
--- a/imgui-js
+++ b/imgui-js
@@ -1 +1 @@
-Subproject commit 9f694ef7e8e7251c32f7811ba39938951a12097a
+Subproject commit 9536ecad287eb76812087cd3fee1aaacb448c027
diff --git a/indexdev.html b/indexdev.html
index 2f6c3b3..3d27479 100644
--- a/indexdev.html
+++ b/indexdev.html
@@ -2,22 +2,16 @@
     <head>
         <title>7GUI</title>
         <script src="node_modules/systemjs/dist/system.js"></script>
-        <!--
-        <script type="systemjs-importmap">
-            {
-                "imports": {
-                    "imgui-js/example/imgui_impl": "imgui-js/dist/imgui_impl.umd.js"
-                }
-            }
-        </script>
-        -->
         <script>
             System.config({
                 map: {
-                    "imgui-js": "./imgui-js"
+                    "imgui-js": "./imgui-js",
+                    "pixi.js": "./node_modules/pixi.js"
                 },
                 packages: {
-                    "imgui-js": { main: "imgui.js", }
+                    "imgui-js": { main: "imgui.js" },
+                    "pixi.js": { main: "dist/pixi.js" },
+                    "./": { map: { "src/utils": "./src/utils.js", "src/imgui_impl": "./src/imgui_impl.js" } }
                 }
             });
             System.import("./src/main.js");
diff --git a/package-lock.json b/package-lock.json
index ed52494..8bda7e5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,16 +4,34 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@pixi/constants": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/constants/-/constants-5.1.0.tgz",
+      "integrity": "sha512-86cogDvjF9yNvmxeizwkIhA0Kl2z3gUSWMf2daYx903dzyje7fwkzRrKLnqDUn6vSAxRXiska0DMJhwYsIC29w=="
+    },
+    "@pixi/math": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/math/-/math-5.1.0.tgz",
+      "integrity": "sha512-Vf9W4SgYRRQMdSq8tFViKKKGCU3iklf0RDzd+wzp4gezOxe3m0PLB7XKwvVrP1hRjUh49zIAL9JBpYREPS1EMw=="
+    },
+    "@pixi/polyfill": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/polyfill/-/polyfill-5.1.0.tgz",
+      "integrity": "sha512-8M3nYCO0a599fsdLW7wv9SBYriMqS1QckKAkRuN2JualRuK/GjxZjm5Vcbcwc1gGONRUKZroH12CuPyTcU2HnQ==",
+      "requires": {
+        "es6-promise-polyfill": "^1.2.0",
+        "object-assign": "^4.1.1"
+      }
+    },
     "@types/estree": {
       "version": "0.0.39",
       "resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.39.tgz",
       "integrity": "sha512-EYNwp3bU+98cpU4lAWYYL7Zz+2gryWH1qbdDTidVd6hkiR6weksdbMadyXKXNPEkQFhXM+hVO9ZygomHXp+AIw=="
     },
     "@types/node": {
-      "version": "12.0.7",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.0.7.tgz",
-      "integrity": "sha512-1YKeT4JitGgE4SOzyB9eMwO0nGVNkNEsm9qlIt1Lqm/tG2QEiSMTD4kS3aO6L+w5SClLVxALmIBESK6Mk5wX0A==",
-      "dev": true
+      "version": "12.6.8",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.6.8.tgz",
+      "integrity": "sha512-aX+gFgA5GHcDi89KG5keey2zf0WfZk/HAQotEamsK2kbey+8yGKcson0hbK8E+v0NArlCJQCqMP161YhV6ZXLg=="
     },
     "@types/resolve": {
       "version": "0.0.8",
@@ -27,7 +45,13 @@
     "@types/systemjs": {
       "version": "0.20.6",
       "resolved": "https://registry.npmjs.org/@types/systemjs/-/systemjs-0.20.6.tgz",
-      "integrity": "sha512-p3yv9sBBJXi3noUG216BpUI7VtVBUAvBIfZNTiDROUY31YBfsFHM4DreS7XMekN8IjtX0ysvCnm6r3WnirnNeA=="
+      "integrity": "sha512-p3yv9sBBJXi3noUG216BpUI7VtVBUAvBIfZNTiDROUY31YBfsFHM4DreS7XMekN8IjtX0ysvCnm6r3WnirnNeA==",
+      "dev": true
+    },
+    "@types/webgl2": {
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/@types/webgl2/-/webgl2-0.0.5.tgz",
+      "integrity": "sha512-oGaKsBbxQOY5+aJFV3KECDhGaXt+yZJt2y/OZsnQGLRkH6Fvr7rv4pCt3SRH1somIHfej/c4u7NSpCyd9x+1Ow=="
     },
     "abstract-leveldown": {
       "version": "0.12.4",
@@ -57,9 +81,9 @@
       }
     },
     "acorn": {
-      "version": "6.1.1",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.1.1.tgz",
-      "integrity": "sha512-jPTiwtOxaHNaAPg/dmrJ/beuzLRnXtB0kQPQ8JpotKJgTB6rX6c8mlf315941pyjBSaPg8NHXS9fhP4u17DpGA=="
+      "version": "6.2.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.2.0.tgz",
+      "integrity": "sha512-8oe72N3WPMjA+2zVG71Ia0nXZ8DpQH+QyyHO+p06jT8eg8FGG3FbcUIi8KziHlAfheJQZeoqbvq1mQSQHXKYLw=="
     },
     "anymatch": {
       "version": "2.0.0",
@@ -258,6 +282,12 @@
             "isarray": "0.0.1",
             "string_decoder": "~0.10.x"
           }
+        },
+        "string_decoder": {
+          "version": "0.10.31",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+          "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
+          "dev": true
         }
       }
     },
@@ -485,12 +515,6 @@
         "object-visit": "^1.0.0"
       }
     },
-    "colors": {
-      "version": "1.3.3",
-      "resolved": "https://registry.npmjs.org/colors/-/colors-1.3.3.tgz",
-      "integrity": "sha512-mmGt/1pZqYRjMxB1axhTo16/snVZ5krrKkcmMeVKxzECMMXoCgnvTPp10QgHfcbQZw8Dq2jMNG6je4JlWU0gWg==",
-      "dev": true
-    },
     "component-emitter": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.3.0.tgz",
@@ -533,16 +557,6 @@
       "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
       "dev": true
     },
-    "cors": {
-      "version": "2.8.5",
-      "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
-      "integrity": "sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==",
-      "dev": true,
-      "requires": {
-        "object-assign": "^4",
-        "vary": "^1"
-      }
-    },
     "create-ecdh": {
       "version": "4.0.3",
       "resolved": "https://registry.npmjs.org/create-ecdh/-/create-ecdh-4.0.3.tgz",
@@ -703,6 +717,11 @@
       "integrity": "sha1-rOb/gIwc5mtX0ev5eXessCM0z8E=",
       "dev": true
     },
+    "earcut": {
+      "version": "2.1.5",
+      "resolved": "https://registry.npmjs.org/earcut/-/earcut-2.1.5.tgz",
+      "integrity": "sha512-QFWC7ywTVLtvRAJTVp8ugsuuGQ5mVqNmJ1cRYeLrSHgP3nycr2RHTJob9OtM0v8ujuoKN0NY1a93J/omeTL1PA=="
+    },
     "ee-first": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
@@ -739,6 +758,11 @@
         "prr": "~1.0.1"
       }
     },
+    "es6-promise-polyfill": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/es6-promise-polyfill/-/es6-promise-polyfill-1.2.0.tgz",
+      "integrity": "sha1-84kl8jyz4+jObNqP93T867sJDN4="
+    },
     "escape-html": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
@@ -772,6 +796,11 @@
         "through": "~2.3.1"
       }
     },
+    "eventemitter3": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-3.1.2.tgz",
+      "integrity": "sha512-tvtQIeLVHjDkJYnzf2dgVMxfuSGJeM/7UCG17TT4EumTfNtF+0nebF/4zWOIkCreAbtNqhGEboB6BWrwqNaw4Q=="
+    },
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-        "encodeurl": "~1.0.2",
-        "escape-html": "~1.0.3",
-        "etag": "~1.8.1",
-        "fresh": "0.5.2",
-        "http-errors": "~1.7.2",
-        "mime": "1.6.0",
-        "ms": "2.1.1",
-        "on-finished": "~2.3.0",
-        "range-parser": "~1.2.1",
-        "statuses": "~1.5.0"
-      },
-      "dependencies": {
-        "ms": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
-          "dev": true
-        }
-      }
-    },
     "serve-index": {
       "version": "1.9.1",
       "resolved": "https://registry.npmjs.org/serve-index/-/serve-index-1.9.1.tgz",
@@ -4902,6 +5344,12 @@
             "statuses": ">= 1.4.0 < 2"
           }
         },
+        "inherits": {
+          "version": "2.0.3",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+          "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+          "dev": true
+        },
         "setprototypeof": {
           "version": "1.1.0",
           "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
@@ -4911,9 +5359,9 @@
       }
     },
     "set-value": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.0.tgz",
-      "integrity": "sha512-hw0yxk9GT/Hr5yJEYnHNKYXkIA8mVJgd9ditYZCe16ZczcaELYYcfvaXesNACk2O8O0nTiPQcQhGUQj8JLzeeg==",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.1.tgz",
+      "integrity": "sha512-JxHc1weCN68wRY0fhCoXpyK55m/XPHafOmK4UWD7m2CI14GMcFypt4w/0+NV5f/ZMby2F6S2wwA7fgynh9gWSw==",
       "dev": true,
       "requires": {
         "extend-shallow": "^2.0.1",
@@ -5082,9 +5530,9 @@
       "dev": true
     },
     "sourcemap-codec": {
-      "version": "1.4.4",
-      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.4.tgz",
-      "integrity": "sha512-CYAPYdBu34781kLHkaW3m6b/uUSyMOC2R61gcYMWooeuaGtjof86ZA/8T+qVPPt7np1085CR9hmMGrySwEc8Xg==",
+      "version": "1.4.6",
+      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.6.tgz",
+      "integrity": "sha512-1ZooVLYFxC448piVLBbtOxFcXwnymH9oUF8nRd3CuYDVvkRBxRl6pB4Mtas5a4drtL+E8LDgFkQNcgIw6tc8Hg==",
       "dev": true
     },
     "split": {
@@ -5148,10 +5596,13 @@
       "dev": true
     },
     "string_decoder": {
-      "version": "0.10.31",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
-      "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
-      "dev": true
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "~5.1.0"
+      }
     },
     "systemjs": {
       "version": "0.21.6",
@@ -5231,44 +5682,21 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.5.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.2.tgz",
-      "integrity": "sha512-7KxJovlYhTX5RaRbUdkAXN1KUZ8PwWlTzQdHV6xNqvuFOs7+WBo10TQUqT19Q/Jz2hk5v9TQDIhyLhhJY4p5AA==",
+      "version": "3.5.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.3.tgz",
+      "integrity": "sha512-ACzBtm/PhXBDId6a6sDJfroT2pOWt/oOnk4/dElG5G33ZL776N3Y6/6bKZJBFpd+b05F3Ct9qDjMeJmRWtE2/g==",
       "dev": true
     },
     "union-value": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz",
-      "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",
+      "integrity": "sha512-tJfXmxMeWYnczCVs7XAEvIV7ieppALdyepWMkHkwciRpZraG/xwT+s2JN8+pr1+8jCRf80FFzvr+MpQeeoF4Xg==",
       "dev": true,
       "requires": {
         "arr-union": "^3.1.0",
         "get-value": "^2.0.6",
         "is-extendable": "^0.1.1",
-        "set-value": "^0.4.3"
-      },
-      "dependencies": {
-        "extend-shallow": {
-          "version": "2.0.1",
-          "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
-          "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
-          "dev": true,
-          "requires": {
-            "is-extendable": "^0.1.0"
-          }
-        },
-        "set-value": {
-          "version": "0.4.3",
-          "resolved": "https://registry.npmjs.org/set-value/-/set-value-0.4.3.tgz",
-          "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=",
-          "dev": true,
-          "requires": {
-            "extend-shallow": "^2.0.1",
-            "is-extendable": "^0.1.1",
-            "is-plain-object": "^2.0.1",
-            "to-object-path": "^0.3.0"
-          }
-        }
+        "set-value": "^2.0.1"
       }
     },
     "universalify": {
@@ -5341,6 +5769,15 @@
       "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
       "dev": true
     },
+    "url": {
+      "version": "0.11.0",
+      "resolved": "https://registry.npmjs.org/url/-/url-0.11.0.tgz",
+      "integrity": "sha1-ODjpfPxgUh63PFJajlW/3Z4uKPE=",
+      "requires": {
+        "punycode": "1.3.2",
+        "querystring": "0.2.0"
+      }
+    },
     "use": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
@@ -5372,12 +5809,13 @@
       "dev": true
     },
     "websocket-driver": {
-      "version": "0.7.0",
-      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.0.tgz",
-      "integrity": "sha1-DK+dLXVdk67gSdS90NP+LMoqJOs=",
+      "version": "0.7.3",
+      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.3.tgz",
+      "integrity": "sha512-bpxWlvbbB459Mlipc5GBzzZwhoZgGEZLuqPaR0INBGnPAY1vdBX6hPnoFXiw+3yWxDuHyQjO2oXTMyS8A5haFg==",
       "dev": true,
       "requires": {
-        "http-parser-js": ">=0.4.0",
+        "http-parser-js": ">=0.4.0 <0.4.11",
+        "safe-buffer": ">=5.1.0",
         "websocket-extensions": ">=0.1.1"
       }
     },
diff --git a/package.json b/package.json
index 07cf1ea..8aafc46 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,9 @@
     "build": "tsc",
     "rollup": "rollup -c",
     "watch": "npx live-server --open=index.html --watch='./*.html,./*.js'",
-    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./*.js'"
+    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./src/*.js'",
+    "pixi": "cd pixi.js && npm run local && cd .. && npm run pixi:install",
+    "pixi:install": "rm -rf node_modules/pixi.js && rm package-lock.json"
   },
   "repository": {
     "type": "git",
@@ -17,13 +19,15 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@types/systemjs": "^0.20.6",
+    "@types/webgl2": "0.0.5",
     "imgui-js": "file:./imgui-js",
+    "pixi.js": "file:pixi.js/bundles/pixi.js/pixi.js-5.1.4.tgz",
     "rollup": "^1.15.6",
     "systemjs": "^0.21.5"
   },
   "devDependencies": {
     "@types/node": "^12.0.0",
+    "@types/systemjs": "^0.20.6",
     "live-server": "^1.2.1",
     "rollup-plugin-commonjs": "^10.0.0",
     "rollup-plugin-node-builtins": "^2.1.2",
diff --git a/pixi.js b/pixi.js
new file mode 160000
index 0000000..1b78731
--- /dev/null
+++ b/pixi.js
@@ -0,0 +1 @@
+Subproject commit 1b78731948b57c635a2e65444c387eed31ec7428
diff --git a/session b/session
index bbf5582..06b9a8d 100644
--- a/session
+++ b/session
@@ -1,322 +1,62 @@
 let SessionLoad = 1
 if &cp | set nocp | endif
-let s:cpo_save=&cpo
-set cpo&vim
-imap <Nul> <C-Space>
-inoremap <expr> <Up> pumvisible() ? "\" : "\<Up>"
-inoremap <expr> <S-Tab> pumvisible() ? "\" : "\<S-Tab>"
-inoremap <expr> <Down> pumvisible() ? "\" : "\<Down>"
-nnoremap <silent>  :TmuxNavigateLeft
-nnoremap <silent> <NL> :TmuxNavigateDown
-nnoremap <silent>  :TmuxNavigateUp
-nnoremap <silent>  :TmuxNavigateRight
-nnoremap <silent>  :TmuxNavigatePrevious
-nnoremap \d :YcmShowDetailedDiagnostic
-vnoremap <silent> \c :call CopyMarkWithCursor("<", ">")
-nnoremap <silent> \c :set opfunc=OpSysCopyMarkg@
-vmap gx <Plug>NetrwBrowseXVis
-nmap gx <Plug>NetrwBrowseX
-vnoremap <silent> <Plug>NetrwBrowseXVis :call netrw#BrowseXVis()
-nnoremap <silent> <Plug>NetrwBrowseX :call netrw#BrowseX(expand((exists("g:netrw_gx")? g:netrw_gx : '<cfile>')),netrw#CheckIfRemote())
-inoremap <expr> 	 pumvisible() ? "\" : "\	"
-let &cpo=s:cpo_save
-unlet s:cpo_save
-set autoindent
-set backspace=indent,eol,start
-set completefunc=youcompleteme#CompleteFunc
-set completeopt=preview,menuone
-set cpoptions=aAceFsB
-set fileencodings=ucs-bom,utf-8,default,latin1
-set fillchars=vert:|,fold:-,vert:│
-set helplang=en
-set hidden
-set include=import_s.\\zs[^'\"]*\\ze
-set includeexpr=TsIncludeExpr(v:fname)
-set nomodeline
-set path=.,/usr/include,,,./node_modules/**,node_modules/**
-set ruler
-set runtimepath=~/.vim,~/.vim/bundle/JustDo,~/.vim/bundle/YouCompleteMe,~/.vim/bundle/vim-easymotion,~/.vim/bundle/vim-tmux-navigator,~/.vim/bundle/yats.vim,/var/lib/vim/addons,/usr/share/vim/vimfiles,/usr/share/vim/vim74,/usr/share/vim/vimfiles/after,/var/lib/vim/addons/after,~/.vim/after
-set sessionoptions=blank,buffers,folds,help,options,tabpages,winsize,sesdir
-set shortmess=filnxtToOc
-set suffixes=.bak,~,.swp,.o,.info,.aux,.log,.dvi,.bbl,.blg,.brf,.cb,.ind,.idx,.ilg,.inx,.out,.toc
-set suffixesadd=.ts
 let s:so_save = &so | let s:siso_save = &siso | set so=0 siso=0
 let v:this_session=expand("<sfile>:p")
 silent only
+silent tabonly
 exe "cd " . escape(expand("<sfile>:p:h"), ' ')
 if expand('%') == '' && !&modified && line('$') <= 1 && getline(1) == ''
   let s:wipebuf = bufnr('%')
 endif
 set shortmess=aoO
+argglobal
+%argdel
+edit src/imgui_impl.ts
+set splitbelow splitright
+set nosplitbelow
+set nosplitright
+wincmd t
+set winminheight=0
+set winheight=1
+set winminwidth=0
+set winwidth=1
+argglobal
+let s:l = 1 - ((0 * winheight(0) + 21) / 42)
+if s:l < 1 | let s:l = 1 | endif
+exe s:l
+normal! zt
+1
+normal! 0
+tabnext 1
+badd +0 src/imgui_impl.ts
 badd +12 rollup.config.js
 badd +7 imgui-js/rollup.config.js
-badd +7 imgui-js/tsconfig.json
-badd +26 tsconfig.json
+badd +4 imgui-js/tsconfig.json
+badd +12 tsconfig.json
 badd +1 index.js
 badd +3904 imgui-js/imgui.ts
-badd +39 src/main.ts
+badd +80 src/main.ts
 badd +52 imgui-js/example/main.ts
-badd +8 package.json
+badd +34 package.json
 badd +1 imgui-js/dist/imgui.d.ts
 badd +1 imgui-js/bind-imgui.js
 badd +1 imgui-js/example/imgui_impl.js
 badd +2 imgui-js/example/imgui_impl.ts
 badd +295 imgui-js/imgui_demo.ts
 badd +4 index.html
-badd +14 indexdev.html
+badd +4 indexdev.html
 badd +6 imgui-js/example/index.html
-badd +2 imgui-js/example/system.config.js
+badd +6 imgui-js/example/system.config.js
 badd +40 imgui-js/package.json
-badd +201 node_modules/systemjs/dist/system.js
-argglobal
-silent! argdel *
-edit package.json
-set splitbelow splitright
-wincmd _ | wincmd |
-split
-1wincmd k
-wincmd w
-set nosplitbelow
-set nosplitright
-wincmd t
-set winheight=1 winwidth=1
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-argglobal
-enew
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=wipe
-setlocal buflisted
-setlocal buftype=nofile
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=s1:/*,mb:*,ex:*/,://,b:#,:%,:XCOMM,n:>,fb:-
-setlocal commentstring=/*%s*/
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != ''
-setlocal filetype=
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=tcq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=
-setlocal indentkeys=0{,0},:,0#,!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal nomodifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal previewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal noswapfile
-setlocal synmaxcol=3000
-if &syntax != ''
-setlocal syntax=
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal winfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-wincmd w
-argglobal
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=
-setlocal buflisted
-setlocal buftype=
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=
-setlocal commentstring=
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != 'json'
-setlocal filetype=json
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=cq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=GetJSONIndent()
-setlocal indentkeys=0{,0},0),0[,0],!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal modifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal nopreviewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal swapfile
-setlocal synmaxcol=3000
-if &syntax != 'json'
-setlocal syntax=json
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal nowinfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-silent! normal! zE
-let s:l = 23 - ((19 * winheight(0) + 15) / 31)
-if s:l < 1 | let s:l = 1 | endif
-exe s:l
-normal! zt
-23
-normal! 024|
-wincmd w
-2wincmd w
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-tabnext 1
-if exists('s:wipebuf')
+badd +1 node_modules/systemjs/dist/system.js
+badd +1 src/main.js
+badd +1 imgui-js/example/main.js
+if exists('s:wipebuf') && len(win_findbuf(s:wipebuf)) == 0
   silent exe 'bwipe ' . s:wipebuf
 endif
 unlet! s:wipebuf
 set winheight=1 winwidth=20 shortmess=filnxtToOc
+set winminheight=1 winminwidth=1
 let s:sx = expand("<sfile>:p:r")."x.vim"
 if file_readable(s:sx)
   exe "source " . fnameescape(s:sx)
diff --git a/src/imgui_impl.js b/src/imgui_impl.js
new file mode 100644
index 0000000..416e4b2
--- /dev/null
+++ b/src/imgui_impl.js
@@ -0,0 +1,736 @@
+System.register(["imgui-js", "pixi.js", "./utils"], function (exports_1, context_1) {
+    "use strict";
+    var ImGui, PIXI, U, clipboard_text, contexts, contextIOs, isFirstWindow, ImGuiImplInternalRenderer, gl, app, ImGuiWindowLayer, ImGuiWindow, canvas, g_ShaderHandle, g_VertHandle, g_FragHandle, g_AttribLocationTex, g_AttribLocationProjMtx, g_AttribLocationPosition, g_AttribLocationUV, g_AttribLocationColor, g_VaoHandle, g_VboHandle, g_ElementsHandle, g_FontTexture, mouse_button_map;
+    var __moduleName = context_1 && context_1.id;
+    function document_on_copy(event) {
+        if (event.clipboardData) {
+            event.clipboardData.setData("text/plain", clipboard_text);
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function document_on_cut(event) {
+        if (event.clipboardData) {
+            event.clipboardData.setData("text/plain", clipboard_text);
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function document_on_paste(event) {
+        if (event.clipboardData) {
+            clipboard_text = event.clipboardData.getData("text/plain");
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function window_on_gamepadconnected(event /* GamepadEvent */) {
+        console.log("Gamepad connected at index %d: %s. %d buttons, %d axes.", event.gamepad.index, event.gamepad.id, event.gamepad.buttons.length, event.gamepad.axes.length);
+    }
+    function window_on_gamepaddisconnected(event /* GamepadEvent */) {
+        console.log("Gamepad disconnected at index %d: %s.", event.gamepad.index, event.gamepad.id);
+    }
+    function canvas_on_blur(event) {
+        for (var io of contextIOs) {
+            io.KeyCtrl = false;
+            io.KeyShift = false;
+            io.KeyAlt = false;
+            io.KeySuper = false;
+            for (let i = 0; i < io.KeysDown.length; ++i) {
+                io.KeysDown[i] = false;
+            }
+            for (let i = 0; i < io.MouseDown.length; ++i) {
+                io.MouseDown[i] = false;
+            }
+        }
+    }
+    function canvas_on_keydown(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.KeyCtrl = event.ctrlKey;
+            io.KeyShift = event.shiftKey;
+            io.KeyAlt = event.altKey;
+            io.KeySuper = event.metaKey;
+            ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+            io.KeysDown[event.keyCode] = true;
+            // forward to the keypress event
+            if ( /*io.WantCaptureKeyboard ||*/event.key === "Tab") {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_keyup(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.KeyCtrl = event.ctrlKey;
+            io.KeyShift = event.shiftKey;
+            io.KeyAlt = event.altKey;
+            io.KeySuper = event.metaKey;
+            ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+            io.KeysDown[event.keyCode] = false;
+            if (io.WantCaptureKeyboard) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_keypress(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.AddInputCharacter(event.charCode);
+            if (io.WantCaptureKeyboard) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_contextmenu(event) {
+        for (var io of contextIOs) {
+            if (io.WantCaptureMouse) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_wheel(event) {
+        for (var io of contextIOs) {
+            let scale = 1.0;
+            switch (event.deltaMode) {
+                case event.DOM_DELTA_PIXEL:
+                    scale = 0.01;
+                    break;
+                case event.DOM_DELTA_LINE:
+                    scale = 0.2;
+                    break;
+                case event.DOM_DELTA_PAGE:
+                    scale = 1.0;
+                    break;
+            }
+            io.MouseWheelH = event.deltaX * scale;
+            io.MouseWheel = -event.deltaY * scale; // Mouse wheel: 1 unit scrolls about 5 lines text.
+            if (io.WantCaptureMouse) {
+                event.preventDefault();
+            }
+        }
+    }
+    function PrePIXIInit() {
+        PIXI.Renderer.registerPlugin("imgui_renderer", U.fromConstructor(ImGuiImplInternalRenderer));
+    }
+    exports_1("PrePIXIInit", PrePIXIInit);
+    function Init(_app) {
+        // Setup Dear ImGui binding
+        ImGui.IMGUI_CHECKVERSION();
+        if (typeof (document) !== "undefined") {
+            document.body.addEventListener("copy", document_on_copy);
+            document.body.addEventListener("cut", document_on_cut);
+            document.body.addEventListener("paste", document_on_paste);
+        }
+        if (typeof (window) !== "undefined") {
+            window.addEventListener("gamepadconnected", window_on_gamepadconnected);
+            window.addEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+        }
+        app = _app;
+        gl = app.renderer.gl;
+        canvas = app.view;
+        gl.getExtension("EXT_color_buffer_float");
+        if (canvas !== null) {
+            canvas.style.touchAction = "none"; // Disable browser handling of all panning and zooming gestures.
+            canvas.addEventListener("blur", canvas_on_blur);
+            canvas.addEventListener("keydown", canvas_on_keydown);
+            canvas.addEventListener("keyup", canvas_on_keyup);
+            canvas.addEventListener("keypress", canvas_on_keypress);
+            canvas.addEventListener("contextmenu", canvas_on_contextmenu);
+            canvas.addEventListener("wheel", canvas_on_wheel);
+        }
+        CreateDeviceObjects();
+    }
+    exports_1("Init", Init);
+    function Shutdown() {
+        DestroyDeviceObjects();
+        if (canvas !== null) {
+            canvas.removeEventListener("blur", canvas_on_blur);
+            canvas.removeEventListener("keydown", canvas_on_keydown);
+            canvas.removeEventListener("keyup", canvas_on_keyup);
+            canvas.removeEventListener("keypress", canvas_on_keypress);
+            canvas.removeEventListener("contextmenu", canvas_on_contextmenu);
+            canvas.removeEventListener("wheel", canvas_on_wheel);
+        }
+        app = null;
+        canvas = null;
+        if (typeof (window) !== "undefined") {
+            window.removeEventListener("gamepadconnected", window_on_gamepadconnected);
+            window.removeEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+        }
+        if (typeof (document) !== "undefined") {
+            document.body.removeEventListener("copy", document_on_copy);
+            document.body.removeEventListener("cut", document_on_cut);
+            document.body.removeEventListener("paste", document_on_paste);
+        }
+    }
+    exports_1("Shutdown", Shutdown);
+    function CreateFontsTexture() {
+        const io = ImGui.GetIO();
+        // Backup GL state
+        const last_texture = gl && gl.getParameter(gl.TEXTURE_BINDING_2D);
+        // Build texture atlas
+        // const width: number = 256;
+        // const height: number = 256;
+        // const pixels: Uint8Array = new Uint8Array(4 * width * height).fill(0xff);
+        const { width, height, pixels } = io.Fonts.GetTexDataAsRGBA32(); // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+        // console.log(`font texture ${width} x ${height} @ ${pixels.length}`);
+        // Upload texture to graphics system
+        g_FontTexture = gl && gl.createTexture();
+        gl && gl.bindTexture(gl.TEXTURE_2D, g_FontTexture);
+        gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+        gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+        // gl && gl.pixelStorei(gl.UNPACK_ROW_LENGTH); // WebGL2
+        gl && gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+        // Store our identifier
+        io.Fonts.TexID = g_FontTexture || { foo: "bar" };
+        // console.log("font texture id", g_FontTexture);
+        // Restore modified GL state
+        gl && last_texture && gl.bindTexture(gl.TEXTURE_2D, last_texture);
+    }
+    function DestroyFontsTexture() {
+        const io = ImGui.GetIO();
+        io.Fonts.TexID = null;
+        gl && gl.deleteTexture(g_FontTexture);
+        g_FontTexture = null;
+    }
+    function CreateDeviceObjects() {
+        const vertex_shader = [
+            "#version 300 es",
+            "uniform mat4 ProjMtx;",
+            "in vec2 Position;",
+            "in vec2 UV;",
+            "in vec4 Color;",
+            "out vec2 Frag_UV;",
+            "out vec4 Frag_Color;",
+            "void main() {",
+            "	Frag_UV = UV;",
+            "	Frag_Color = Color;",
+            "	gl_Position = ProjMtx * vec4(Position.xy,0,1);",
+            "}",
+        ];
+        const fragment_shader = [
+            "#version 300 es",
+            "precision mediump float;",
+            "uniform sampler2D Texture;",
+            "in vec2 Frag_UV;",
+            "in vec4 Frag_Color;",
+            "out vec4 OutColor;",
+            "void main() {",
+            "	OutColor = Frag_Color * texture(Texture, Frag_UV);",
+            "}",
+        ];
+        g_ShaderHandle = gl && gl.createProgram();
+        g_VertHandle = gl && gl.createShader(gl.VERTEX_SHADER);
+        g_FragHandle = gl && gl.createShader(gl.FRAGMENT_SHADER);
+        gl && gl.shaderSource(g_VertHandle, vertex_shader.join("\n"));
+        gl && gl.shaderSource(g_FragHandle, fragment_shader.join("\n"));
+        gl && gl.compileShader(g_VertHandle);
+        gl && gl.compileShader(g_FragHandle);
+        gl && gl.attachShader(g_ShaderHandle, g_VertHandle);
+        gl && gl.attachShader(g_ShaderHandle, g_FragHandle);
+        gl && gl.linkProgram(g_ShaderHandle);
+        g_AttribLocationTex = gl && gl.getUniformLocation(g_ShaderHandle, "Texture");
+        g_AttribLocationProjMtx = gl && gl.getUniformLocation(g_ShaderHandle, "ProjMtx");
+        g_AttribLocationPosition = gl && gl.getAttribLocation(g_ShaderHandle, "Position") || 0;
+        g_AttribLocationUV = gl && gl.getAttribLocation(g_ShaderHandle, "UV") || 0;
+        g_AttribLocationColor = gl && gl.getAttribLocation(g_ShaderHandle, "Color") || 0;
+        g_VaoHandle = gl && gl.createVertexArray();
+        g_VboHandle = gl && gl.createBuffer();
+        g_ElementsHandle = gl && gl.createBuffer();
+    }
+    function DestroyDeviceObjects() {
+        DestroyFontsTexture();
+        gl && gl.deleteVertexArray(g_VaoHandle);
+        g_VaoHandle = null;
+        gl && gl.deleteBuffer(g_VboHandle);
+        g_VboHandle = null;
+        gl && gl.deleteBuffer(g_ElementsHandle);
+        g_ElementsHandle = null;
+        g_AttribLocationTex = null;
+        g_AttribLocationProjMtx = null;
+        g_AttribLocationPosition = -1;
+        g_AttribLocationUV = -1;
+        g_AttribLocationColor = -1;
+        gl && gl.deleteProgram(g_ShaderHandle);
+        g_ShaderHandle = null;
+        gl && gl.deleteShader(g_VertHandle);
+        g_VertHandle = null;
+        gl && gl.deleteShader(g_FragHandle);
+        g_FragHandle = null;
+    }
+    return {
+        setters: [
+            function (ImGui_1) {
+                ImGui = ImGui_1;
+            },
+            function (PIXI_1) {
+                PIXI = PIXI_1;
+            },
+            function (U_1) {
+                U = U_1;
+            }
+        ],
+        execute: function () {
+            clipboard_text = "";
+            contexts = [];
+            contextIOs = [];
+            isFirstWindow = true;
+            ImGuiImplInternalRenderer = class ImGuiImplInternalRenderer extends PIXI.ObjectRenderer {
+                constructor(r) {
+                    super(r);
+                }
+                render(owner) {
+                    if (!(owner instanceof ImGuiWindowLayer))
+                        return;
+                    const window = owner.window;
+                    const io = window.io;
+                    const draw_data = ImGui.GetDrawData();
+                    if (draw_data === null) {
+                        throw new Error();
+                    }
+                    gl || console.log(draw_data);
+                    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+                    const fb_width = io.DisplaySize.x * io.DisplayFramebufferScale.x;
+                    const fb_height = io.DisplaySize.y * io.DisplayFramebufferScale.y;
+                    if (fb_width === 0 || fb_height === 0) {
+                        return;
+                    }
+                    draw_data.ScaleClipRects(io.DisplayFramebufferScale);
+                    // Backup GL state
+                    const last_program = gl && gl.getParameter(gl.CURRENT_PROGRAM) || null;
+                    const last_active_texture = gl && gl.getParameter(gl.ACTIVE_TEXTURE) || null;
+                    gl && gl.activeTexture(gl.TEXTURE0);
+                    const last_texture0 = gl && gl.getParameter(gl.TEXTURE_BINDING_2D) || null;
+                    const last_vertex_array = gl && gl.getParameter(gl.VERTEX_ARRAY_BINDING) || null;
+                    const last_array_buffer = gl && gl.getParameter(gl.ARRAY_BUFFER_BINDING) || null;
+                    const last_element_array_buffer = gl && gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING) || null;
+                    // GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+                    const last_viewport = gl && gl.getParameter(gl.VIEWPORT) || null;
+                    const last_scissor_box = gl && gl.getParameter(gl.SCISSOR_BOX) || null;
+                    const last_blend_src_rgb = gl && gl.getParameter(gl.BLEND_SRC_RGB) || null;
+                    const last_blend_dst_rgb = gl && gl.getParameter(gl.BLEND_DST_RGB) || null;
+                    const last_blend_src_alpha = gl && gl.getParameter(gl.BLEND_SRC_ALPHA) || null;
+                    const last_blend_dst_alpha = gl && gl.getParameter(gl.BLEND_DST_ALPHA) || null;
+                    const last_blend_equation_rgb = gl && gl.getParameter(gl.BLEND_EQUATION_RGB) || null;
+                    const last_blend_equation_alpha = gl && gl.getParameter(gl.BLEND_EQUATION_ALPHA) || null;
+                    const last_enable_blend = gl && gl.getParameter(gl.BLEND) || null;
+                    const last_enable_cull_face = gl && gl.getParameter(gl.CULL_FACE) || null;
+                    const last_enable_depth_test = gl && gl.getParameter(gl.DEPTH_TEST) || null;
+                    const last_enable_scissor_test = gl && gl.getParameter(gl.SCISSOR_TEST) || null;
+                    gl.clearColor(0, 0, 0, 0);
+                    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+                    gl && gl.bindVertexArray(g_VaoHandle);
+                    // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
+                    gl && gl.enable(gl.BLEND);
+                    gl && gl.blendEquation(gl.FUNC_ADD);
+                    gl && gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE);
+                    gl && gl.disable(gl.CULL_FACE);
+                    gl && gl.disable(gl.DEPTH_TEST);
+                    gl && gl.enable(gl.SCISSOR_TEST);
+                    // glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+                    // Setup viewport, orthographic projection matrix
+                    // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+                    gl && gl.viewport(0, 0, fb_width, fb_height);
+                    const L = draw_data.DisplayPos.x;
+                    const R = draw_data.DisplayPos.x + draw_data.DisplaySize.x;
+                    const T = draw_data.DisplayPos.y;
+                    const B = draw_data.DisplayPos.y + draw_data.DisplaySize.y;
+                    // we actually flip the bottom and top here to match with PIXI's texture usage
+                    const ortho_projection = new Float32Array([
+                        2.0 / (R - L), 0.0, 0.0, 0.0,
+                        0.0, 2.0 / (B - T), 0.0, 0.0,
+                        0.0, 0.0, -1.0, 0.0,
+                        (R + L) / (L - R), (B + T) / (T - B), 0.0, 1.0,
+                    ]);
+                    gl && gl.useProgram(g_ShaderHandle);
+                    gl && gl.uniform1i(g_AttribLocationTex, 0);
+                    gl && g_AttribLocationProjMtx && gl.uniformMatrix4fv(g_AttribLocationProjMtx, false, ortho_projection);
+                    // Render command lists
+                    gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationPosition);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationUV);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationColor);
+                    gl && gl.vertexAttribPointer(g_AttribLocationPosition, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertPosOffset);
+                    gl && gl.vertexAttribPointer(g_AttribLocationUV, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertUVOffset);
+                    gl && gl.vertexAttribPointer(g_AttribLocationColor, 4, gl.UNSIGNED_BYTE, true, ImGui.ImDrawVertSize, ImGui.ImDrawVertColOffset);
+                    // Draw
+                    const pos = draw_data.DisplayPos;
+                    const idx_buffer_type = gl && ((ImGui.ImDrawIdxSize === 4) ? gl.UNSIGNED_INT : gl.UNSIGNED_SHORT) || 0;
+                    draw_data.IterateDrawLists((draw_list) => {
+                        gl || console.log(draw_list);
+                        gl || console.log("VtxBuffer.length", draw_list.VtxBuffer.length);
+                        gl || console.log("IdxBuffer.length", draw_list.IdxBuffer.length);
+                        let idx_buffer_offset = 0;
+                        gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+                        gl && gl.bufferData(gl.ARRAY_BUFFER, draw_list.VtxBuffer, gl.STREAM_DRAW);
+                        gl && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+                        gl && gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, draw_list.IdxBuffer, gl.STREAM_DRAW);
+                        draw_list.IterateDrawCmds((draw_cmd) => {
+                            gl || console.log(draw_cmd);
+                            gl || console.log("ElemCount", draw_cmd.ElemCount);
+                            gl || console.log("ClipRect", draw_cmd.ClipRect.x, draw_cmd.ClipRect.y, draw_cmd.ClipRect.z - draw_cmd.ClipRect.x, draw_cmd.ClipRect.w - draw_cmd.ClipRect.y);
+                            gl || console.log("TextureId", draw_cmd.TextureId);
+                            if (!gl) {
+                                console.log("i: pos.x pos.y uv.x uv.y col");
+                                for (let i = 0; i < Math.min(3, draw_cmd.ElemCount); ++i) {
+                                    const view = new ImGui.ImDrawVert(draw_list.VtxBuffer.buffer, draw_list.VtxBuffer.byteOffset + i * ImGui.ImDrawVertSize);
+                                    console.log(`${i}: ${view.pos[0].toFixed(2)} ${view.pos[1].toFixed(2)} ${view.uv[0].toFixed(5)} ${view.uv[1].toFixed(5)} ${("00000000" + view.col[0].toString(16)).substr(-8)}`);
+                                }
+                            }
+                            if (draw_cmd.UserCallback !== null) {
+                                // User callback (registered via ImDrawList::AddCallback)
+                                draw_cmd.UserCallback(draw_list, draw_cmd);
+                            }
+                            else {
+                                const clip_rect = new ImGui.ImVec4(draw_cmd.ClipRect.x - pos.x, draw_cmd.ClipRect.y - pos.y, draw_cmd.ClipRect.z - pos.x, draw_cmd.ClipRect.w - pos.y);
+                                if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0 && clip_rect.w >= 0.0) {
+                                    // Apply scissor/clipping rectangle
+                                    gl && gl.scissor(clip_rect.x, clip_rect.y, clip_rect.z - clip_rect.x, clip_rect.w - clip_rect.y);
+                                    // Bind texture, Draw
+                                    gl && gl.bindTexture(gl.TEXTURE_2D, draw_cmd.TextureId);
+                                    gl && gl.drawElements(gl.TRIANGLES, draw_cmd.ElemCount, idx_buffer_type, idx_buffer_offset);
+                                }
+                            }
+                            idx_buffer_offset += draw_cmd.ElemCount * ImGui.ImDrawIdxSize;
+                        });
+                    });
+                    // Restore modified GL state
+                    gl && (last_program !== null) && gl.useProgram(last_program);
+                    gl && (last_texture0 !== null) && gl.bindTexture(gl.TEXTURE_2D, last_texture0);
+                    gl && (last_active_texture !== null) && gl.activeTexture(last_active_texture);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationPosition);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationUV);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationColor);
+                    gl && (last_vertex_array !== null) && gl.bindVertexArray(last_vertex_array);
+                    gl && (last_array_buffer !== null) && gl.bindBuffer(gl.ARRAY_BUFFER, last_array_buffer);
+                    gl && (last_element_array_buffer !== null) && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+                    gl && (last_viewport !== null) && gl.viewport(last_viewport[0], last_viewport[1], last_viewport[2], last_viewport[3]);
+                    gl && (last_scissor_box !== null) && gl.scissor(last_scissor_box[0], last_scissor_box[1], last_scissor_box[2], last_scissor_box[3]);
+                    gl && (last_blend_equation_rgb !== null && last_blend_equation_alpha !== null) && gl.blendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+                    gl && (last_blend_src_rgb !== null && last_blend_src_alpha !== null && last_blend_dst_rgb !== null && last_blend_dst_alpha !== null) && gl.blendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
+                    gl && (last_enable_blend ? gl.enable(gl.BLEND) : gl.disable(gl.BLEND));
+                    gl && (last_enable_cull_face ? gl.enable(gl.CULL_FACE) : gl.disable(gl.CULL_FACE));
+                    gl && (last_enable_depth_test ? gl.enable(gl.DEPTH_TEST) : gl.disable(gl.DEPTH_TEST));
+                    gl && (last_enable_scissor_test ? gl.enable(gl.SCISSOR_TEST) : gl.disable(gl.SCISSOR_TEST));
+                    // glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
+                }
+            };
+            gl = null;
+            app = null;
+            ImGuiWindowLayer = class ImGuiWindowLayer extends PIXI.Sprite {
+                constructor(window, tex) {
+                    super();
+                    this.pluginName = "imgui_renderer";
+                    this.window = window;
+                }
+            };
+            ImGuiWindow = class ImGuiWindow extends PIXI.Container {
+                constructor(sizeX, sizeY, update) {
+                    super();
+                    this.baseTex = new PIXI.BaseRenderTexture({ scaleMode: PIXI.SCALE_MODES.LINEAR, resolution: 1, type: PIXI.TYPES.FLOAT, format: PIXI.FORMATS.RGBA });
+                    this.tex = new PIXI.RenderTexture(this.baseTex);
+                    this.surface = new PIXI.Sprite(this.tex);
+                    this.imgui = new ImGuiWindowLayer(this, this.tex);
+                    this.ctx = ImGui.CreateContext(contextIOs.length == 0 ? null : contextIOs[0].Fonts);
+                    ImGui.SetCurrentContext(this.ctx);
+                    this.io = ImGui.GetIO();
+                    contexts.push(this.ctx);
+                    contextIOs.push(this.io);
+                    if (contexts.length == 1) {
+                        CreateFontsTexture();
+                    }
+                    if (typeof (window) !== "undefined") {
+                        ImGui.LoadIniSettingsFromMemory(window.localStorage.getItem("imgui.ini") || "");
+                    }
+                    if (typeof (navigator) !== "undefined") {
+                        this.io.ConfigMacOSXBehaviors = navigator.platform.match(/Mac/) !== null;
+                    }
+                    this.io.SetClipboardTextFn = (user_data, text) => {
+                        clipboard_text = text;
+                        // console.log(`set clipboard_text: "${clipboard_text}"`);
+                        if (typeof navigator !== "undefined" && typeof navigator.clipboard !== "undefined") {
+                            // console.log(`clipboard.writeText: "${clipboard_text}"`);
+                            navigator.clipboard.writeText(clipboard_text).then(() => {
+                                // console.log(`clipboard.writeText: "${clipboard_text}" done.`);
+                            });
+                        }
+                    };
+                    this.io.GetClipboardTextFn = (user_data) => {
+                        // if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+                        //     console.log(`clipboard.readText: "${clipboard_text}"`);
+                        //     (navigator as any).clipboard.readText().then((text: string): void => {
+                        //         clipboard_text = text;
+                        //         console.log(`clipboard.readText: "${clipboard_text}" done.`);
+                        //     });
+                        // }
+                        // console.log(`get clipboard_text: "${clipboard_text}"`);
+                        return clipboard_text;
+                    };
+                    this.io.ClipboardUserData = null;
+                    // Setup back-end capabilities flags
+                    this.io.BackendFlags |= ImGui.BackendFlags.HasMouseCursors; // We can honor GetMouseCursor() values (optional)
+                    // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+                    this.io.KeyMap[ImGui.Key.Tab] = 9;
+                    this.io.KeyMap[ImGui.Key.LeftArrow] = 37;
+                    this.io.KeyMap[ImGui.Key.RightArrow] = 39;
+                    this.io.KeyMap[ImGui.Key.UpArrow] = 38;
+                    this.io.KeyMap[ImGui.Key.DownArrow] = 40;
+                    this.io.KeyMap[ImGui.Key.PageUp] = 33;
+                    this.io.KeyMap[ImGui.Key.PageDown] = 34;
+                    this.io.KeyMap[ImGui.Key.Home] = 36;
+                    this.io.KeyMap[ImGui.Key.End] = 35;
+                    this.io.KeyMap[ImGui.Key.Insert] = 45;
+                    this.io.KeyMap[ImGui.Key.Delete] = 46;
+                    this.io.KeyMap[ImGui.Key.Backspace] = 8;
+                    this.io.KeyMap[ImGui.Key.Space] = 32;
+                    this.io.KeyMap[ImGui.Key.Enter] = 13;
+                    this.io.KeyMap[ImGui.Key.Escape] = 27;
+                    this.io.KeyMap[ImGui.Key.A] = 65;
+                    this.io.KeyMap[ImGui.Key.C] = 67;
+                    this.io.KeyMap[ImGui.Key.V] = 86;
+                    this.io.KeyMap[ImGui.Key.X] = 88;
+                    this.io.KeyMap[ImGui.Key.Y] = 89;
+                    this.io.KeyMap[ImGui.Key.Z] = 90;
+                    this.update = update;
+                    this.resize(sizeX, sizeY);
+                    this.imgui.pluginName = 'imgui_renderer';
+                    this.addChild(this.surface);
+                    app.renderer.plugins.interaction.addListener("mousedown", this.mouseDown.bind(this));
+                    app.renderer.plugins.interaction.addListener("mouseup", this.mouseUp.bind(this));
+                    app.ticker.add(this.updateInternal.bind(this));
+                    this.interactive = false;
+                    this.interactiveChildren = true;
+                    this.surface.interactive = false;
+                }
+                getSizeX() { return this.sizeX; }
+                getSizeY() { return this.sizeY; }
+                withContext(cb) {
+                    ImGui.SetCurrentContext(this.ctx);
+                    cb();
+                }
+                mouseDown(e) {
+                    if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface) {
+                        this.io.MouseDown[mouse_button_map[0]] = true;
+                    }
+                }
+                mouseUp(e) {
+                    if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface) {
+                        this.io.MouseDown[mouse_button_map[0]] = false;
+                    }
+                }
+                resize(sizeX, sizeY) {
+                    this.sizeX = sizeX;
+                    this.sizeY = sizeY;
+                    this.baseTex.resize(sizeX, sizeY);
+                    this.tex.frame = new PIXI.Rectangle(0, 0, this.baseTex.width, this.baseTex.height);
+                }
+                updateInternal(deltaTime) {
+                    const dt = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+                    ImGui.SetCurrentContext(this.ctx);
+                    if (this.io.WantSaveIniSettings) {
+                        this.io.WantSaveIniSettings = false;
+                        if (typeof (window) !== "undefined") {
+                            window.localStorage.setItem("imgui.ini", ImGui.SaveIniSettingsToMemory());
+                        }
+                    }
+                    this.io.DisplaySize.x = this.sizeX;
+                    this.io.DisplaySize.y = this.sizeY;
+                    this.io.DisplayFramebufferScale.x = 1;
+                    this.io.DisplayFramebufferScale.y = 1;
+                    this.io.DeltaTime = dt;
+                    let localPos = this.toLocal(app.renderer.plugins.interaction.mouse.global);
+                    if (localPos.x < 0 || localPos.y < 0 || localPos.x >= this.sizeX || localPos.y >= this.sizeY) {
+                        localPos = new PIXI.Point(-Number.MAX_VALUE, -Number.MAX_VALUE);
+                    }
+                    this.io.MousePos.x = localPos.x;
+                    this.io.MousePos.y = localPos.y;
+                    if (this.io.WantSetMousePos) {
+                        console.log("TODO: MousePos", this.io.MousePos.x, this.io.MousePos.y);
+                    }
+                    if (typeof (document) !== "undefined") {
+                        if (this.io.MouseDrawCursor) {
+                            document.body.style.cursor = "none";
+                        }
+                        else {
+                            switch (ImGui.GetMouseCursor()) {
+                                case ImGui.MouseCursor.None:
+                                    document.body.style.cursor = "none";
+                                    break;
+                                default:
+                                case ImGui.MouseCursor.Arrow:
+                                    document.body.style.cursor = "default";
+                                    break;
+                                case ImGui.MouseCursor.TextInput:
+                                    document.body.style.cursor = "text";
+                                    break; // When hovering over InputText, etc.
+                                case ImGui.MouseCursor.ResizeAll:
+                                    document.body.style.cursor = "move";
+                                    break; // Unused
+                                case ImGui.MouseCursor.ResizeNS:
+                                    document.body.style.cursor = "ns-resize";
+                                    break; // When hovering over an horizontal border
+                                case ImGui.MouseCursor.ResizeEW:
+                                    document.body.style.cursor = "ew-resize";
+                                    break; // When hovering over a vertical border or a column
+                                case ImGui.MouseCursor.ResizeNESW:
+                                    document.body.style.cursor = "nesw-resize";
+                                    break; // When hovering over the bottom-left corner of a window
+                                case ImGui.MouseCursor.ResizeNWSE:
+                                    document.body.style.cursor = "nwse-resize";
+                                    break; // When hovering over the bottom-right corner of a window
+                                case ImGui.MouseCursor.Hand:
+                                    document.body.style.cursor = "move";
+                                    break;
+                            }
+                        }
+                    }
+                    // Gamepad navigation mapping [BETA]
+                    for (let i = 0; i < this.io.NavInputs.length; ++i) {
+                        this.io.NavInputs[i] = 0.0;
+                    }
+                    if (this.io.ConfigFlags & ImGui.ConfigFlags.NavEnableGamepad) {
+                        // Update gamepad inputs
+                        const gamepads = (typeof (navigator) !== "undefined" && typeof (navigator.getGamepads) === "function") ? navigator.getGamepads() : [];
+                        for (let i = 0; i < gamepads.length; ++i) {
+                            const gamepad = gamepads[i];
+                            if (!gamepad) {
+                                continue;
+                            }
+                            const buttons_count = gamepad.buttons.length;
+                            const axes_count = gamepad.axes.length;
+                            const MAP_BUTTON = function (NAV_NO, BUTTON_NO) {
+                                if (!gamepad) {
+                                    return;
+                                }
+                                if (buttons_count > BUTTON_NO && gamepad.buttons[BUTTON_NO].pressed)
+                                    this.io.NavInputs[NAV_NO] = 1.0;
+                            };
+                            const MAP_ANALOG = function (NAV_NO, AXIS_NO, V0, V1) {
+                                if (!gamepad) {
+                                    return;
+                                }
+                                let v = (axes_count > AXIS_NO) ? gamepad.axes[AXIS_NO] : V0;
+                                v = (v - V0) / (V1 - V0);
+                                if (v > 1.0)
+                                    v = 1.0;
+                                if (this.io.NavInputs[NAV_NO] < v)
+                                    this.io.NavInputs[NAV_NO] = v;
+                            };
+                            // TODO: map input based on vendor and product id
+                            // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/id
+                            const match = gamepad.id.match(/^([0-9a-f]{4})-([0-9a-f]{4})-.*$/);
+                            const match_chrome = gamepad.id.match(/^.*\(.*Vendor: ([0-9a-f]{4}) Product: ([0-9a-f]{4})\).*$/);
+                            const vendor = (match && match[1]) || (match_chrome && match_chrome[1]) || "0000";
+                            const product = (match && match[2]) || (match_chrome && match_chrome[2]) || "0000";
+                            switch (vendor + product) {
+                                case "046dc216": // Logitech Logitech Dual Action (Vendor: 046d Product: c216)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 1); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 2); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 0); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_ANALOG(ImGui.NavInput.DpadLeft, 4, -0.3, -0.9); // D-Pad Left
+                                    MAP_ANALOG(ImGui.NavInput.DpadRight, 4, +0.3, +0.9); // D-Pad Right
+                                    MAP_ANALOG(ImGui.NavInput.DpadUp, 5, -0.3, -0.9); // D-Pad Up
+                                    MAP_ANALOG(ImGui.NavInput.DpadDown, 5, +0.3, +0.9); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 6); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 7); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                case "046dc21d": // Logitech Gamepad F310 (STANDARD GAMEPAD Vendor: 046d Product: c21d)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 0); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 1); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 2); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_BUTTON(ImGui.NavInput.DpadLeft, 14); // D-Pad Left
+                                    MAP_BUTTON(ImGui.NavInput.DpadRight, 15); // D-Pad Right
+                                    MAP_BUTTON(ImGui.NavInput.DpadUp, 12); // D-Pad Up
+                                    MAP_BUTTON(ImGui.NavInput.DpadDown, 13); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_ANALOG(ImGui.NavInput.TweakSlow, 6, +0.3, +0.9); // L2 / LT
+                                    MAP_ANALOG(ImGui.NavInput.TweakFast, 7, +0.3, +0.9); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                case "2dc86001": // 8Bitdo SN30 Pro  8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6001)
+                                case "2dc86101": // 8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6101)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 1); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 0); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 4); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_ANALOG(ImGui.NavInput.DpadLeft, 6, -0.3, -0.9); // D-Pad Left
+                                    MAP_ANALOG(ImGui.NavInput.DpadRight, 6, +0.3, +0.9); // D-Pad Right
+                                    MAP_ANALOG(ImGui.NavInput.DpadUp, 7, -0.3, -0.9); // D-Pad Up
+                                    MAP_ANALOG(ImGui.NavInput.DpadDown, 7, +0.3, +0.9); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 6); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 7); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 8); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 9); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                default: // standard gamepad: https://w3c.github.io/gamepad/#remapping
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 0); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 1); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 2); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_BUTTON(ImGui.NavInput.DpadLeft, 14); // D-Pad Left
+                                    MAP_BUTTON(ImGui.NavInput.DpadRight, 15); // D-Pad Right
+                                    MAP_BUTTON(ImGui.NavInput.DpadUp, 12); // D-Pad Up
+                                    MAP_BUTTON(ImGui.NavInput.DpadDown, 13); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 6); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 7); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                            }
+                        }
+                    }
+                    ImGui.NewFrame();
+                    this.update(dt);
+                    ImGui.EndFrame();
+                    ImGui.Render();
+                    app.renderer.render(this.imgui, this.tex);
+                    this.surface.interactive = this.io.WantCaptureMouse;
+                }
+            };
+            exports_1("ImGuiWindow", ImGuiWindow);
+            canvas = null;
+            //export let gl: WebGL2RenderingContext | null = null;
+            g_ShaderHandle = null;
+            g_VertHandle = null;
+            g_FragHandle = null;
+            g_AttribLocationTex = null;
+            g_AttribLocationProjMtx = null;
+            g_AttribLocationPosition = -1;
+            g_AttribLocationUV = -1;
+            g_AttribLocationColor = -1;
+            g_VaoHandle = null;
+            g_VboHandle = null;
+            g_ElementsHandle = null;
+            g_FontTexture = null;
+            // MouseEvent.button
+            // A number representing a given button:
+            // 0: Main button pressed, usually the left button or the un-initialized state
+            // 1: Auxiliary button pressed, usually the wheel button or the middle button (if present)
+            // 2: Secondary button pressed, usually the right button
+            // 3: Fourth button, typically the Browser Back button
+            // 4: Fifth button, typically the Browser Forward button
+            mouse_button_map = [0, 2, 1, 3, 4];
+        }
+    };
+});
+//# sourceMappingURL=imgui_impl.js.map
\ No newline at end of file
diff --git a/src/imgui_impl.js.map b/src/imgui_impl.js.map
new file mode 100644
index 0000000..bcb545f
--- /dev/null
+++ b/src/imgui_impl.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/src/imgui_impl.ts b/src/imgui_impl.ts
new file mode 100644
index 0000000..a5dad20
--- /dev/null
+++ b/src/imgui_impl.ts
@@ -0,0 +1,797 @@
+import * as ImGui from "imgui-js";
+import { ImVec2 } from "imgui-js";
+import * as PIXI from "pixi.js";
+import * as U from "./utils";
+
+let clipboard_text: string = "";
+
+const contexts: ImGui.ImGuiContext[] = [];
+const contextIOs: ImGui.ImGuiIO[] = [];
+let isFirstWindow: boolean = true;
+
+class ImGuiImplInternalRenderer extends PIXI.ObjectRenderer
+{
+    constructor(r: PIXI.Renderer)
+    {
+        super(r);
+    }
+    render(owner: PIXI.DisplayObject): void
+    {
+        if (!(owner instanceof ImGuiWindowLayer)) return;
+
+        const window: ImGuiWindow = (owner as ImGuiWindowLayer).window;
+
+        const io: ImGui.ImGuiIO = window.io;
+        const draw_data: ImGui.ImDrawData = ImGui.GetDrawData();
+        if (draw_data === null) { throw new Error(); }
+
+        gl || console.log(draw_data);
+
+        // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+        const fb_width: number = io.DisplaySize.x * io.DisplayFramebufferScale.x;
+        const fb_height: number = io.DisplaySize.y * io.DisplayFramebufferScale.y;
+        if (fb_width === 0 || fb_height === 0) {
+            return;
+        }
+        draw_data.ScaleClipRects(io.DisplayFramebufferScale);
+
+        // Backup GL state
+        const last_program: WebGLProgram | null = gl && gl.getParameter(gl.CURRENT_PROGRAM) || null;
+        const last_active_texture: GLenum | null = gl && gl.getParameter(gl.ACTIVE_TEXTURE) || null;
+        gl && gl.activeTexture(gl.TEXTURE0);
+        const last_texture0: WebGLTexture | null = gl && gl.getParameter(gl.TEXTURE_BINDING_2D) || null;
+        const last_vertex_array: WebGLVertexArrayObject | null = gl && gl.getParameter(gl.VERTEX_ARRAY_BINDING) || null;
+        const last_array_buffer: WebGLBuffer | null = gl && gl.getParameter(gl.ARRAY_BUFFER_BINDING) || null;
+        const last_element_array_buffer: WebGLBuffer | null = gl && gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING) || null;
+        // GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+        const last_viewport: Int32Array | null = gl && gl.getParameter(gl.VIEWPORT) || null;
+        const last_scissor_box: Int32Array | null = gl && gl.getParameter(gl.SCISSOR_BOX) || null;
+        const last_blend_src_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_SRC_RGB) || null;
+        const last_blend_dst_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_DST_RGB) || null;
+        const last_blend_src_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_SRC_ALPHA) || null;
+        const last_blend_dst_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_DST_ALPHA) || null;
+        const last_blend_equation_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_EQUATION_RGB) || null;
+        const last_blend_equation_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_EQUATION_ALPHA) || null;
+        const last_enable_blend: GLboolean | null = gl && gl.getParameter(gl.BLEND) || null;
+        const last_enable_cull_face: GLboolean | null = gl && gl.getParameter(gl.CULL_FACE) || null;
+        const last_enable_depth_test: GLboolean | null = gl && gl.getParameter(gl.DEPTH_TEST) || null;
+        const last_enable_scissor_test: GLboolean | null = gl && gl.getParameter(gl.SCISSOR_TEST) || null;
+
+        gl.clearColor(0, 0, 0, 0);
+        gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+        
+        gl && gl.bindVertexArray(g_VaoHandle);
+
+        // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
+        gl && gl.enable(gl.BLEND);
+        gl && gl.blendEquation(gl.FUNC_ADD);
+        gl && gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE);
+        gl && gl.disable(gl.CULL_FACE);
+        gl && gl.disable(gl.DEPTH_TEST);
+        gl && gl.enable(gl.SCISSOR_TEST);
+        // glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+
+        // Setup viewport, orthographic projection matrix
+        // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+        gl && gl.viewport(0, 0, fb_width, fb_height);
+        const L: number = draw_data.DisplayPos.x;
+        const R: number = draw_data.DisplayPos.x + draw_data.DisplaySize.x;
+        const T: number = draw_data.DisplayPos.y;
+        const B: number = draw_data.DisplayPos.y + draw_data.DisplaySize.y;
+        // we actually flip the bottom and top here to match with PIXI's texture usage
+        const ortho_projection: Float32Array = new Float32Array([
+            2.0 / (R - L),     0.0,                0.0, 0.0,
+            0.0,               2.0 / (B - T),      0.0, 0.0,
+            0.0,               0.0,               -1.0, 0.0,
+            (R + L) / (L - R), (B + T) / (T - B),  0.0, 1.0,
+        ]);
+        gl && gl.useProgram(g_ShaderHandle);
+        gl && gl.uniform1i(g_AttribLocationTex, 0);
+        gl && g_AttribLocationProjMtx && gl.uniformMatrix4fv(g_AttribLocationProjMtx, false, ortho_projection);
+
+        // Render command lists
+        gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+        gl && gl.enableVertexAttribArray(g_AttribLocationPosition);
+        gl && gl.enableVertexAttribArray(g_AttribLocationUV);
+        gl && gl.enableVertexAttribArray(g_AttribLocationColor);
+
+        gl && gl.vertexAttribPointer(g_AttribLocationPosition, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertPosOffset);
+        gl && gl.vertexAttribPointer(g_AttribLocationUV, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertUVOffset);
+        gl && gl.vertexAttribPointer(g_AttribLocationColor, 4, gl.UNSIGNED_BYTE, true, ImGui.ImDrawVertSize, ImGui.ImDrawVertColOffset);
+
+        // Draw
+        const pos = draw_data.DisplayPos;
+        const idx_buffer_type: GLenum = gl && ((ImGui.ImDrawIdxSize === 4) ? gl.UNSIGNED_INT : gl.UNSIGNED_SHORT) || 0;
+        draw_data.IterateDrawLists((draw_list: ImGui.ImDrawList): void => {
+            gl || console.log(draw_list);
+            gl || console.log("VtxBuffer.length", draw_list.VtxBuffer.length);
+            gl || console.log("IdxBuffer.length", draw_list.IdxBuffer.length);
+            
+            let idx_buffer_offset: number = 0;
+
+            gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+            gl && gl.bufferData(gl.ARRAY_BUFFER, draw_list.VtxBuffer, gl.STREAM_DRAW);
+            gl && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+            gl && gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, draw_list.IdxBuffer, gl.STREAM_DRAW);
+
+            draw_list.IterateDrawCmds((draw_cmd: ImGui.ImDrawCmd): void => {
+                gl || console.log(draw_cmd);
+                gl || console.log("ElemCount", draw_cmd.ElemCount);
+                gl || console.log("ClipRect", draw_cmd.ClipRect.x, draw_cmd.ClipRect.y, draw_cmd.ClipRect.z - draw_cmd.ClipRect.x, draw_cmd.ClipRect.w - draw_cmd.ClipRect.y);
+                gl || console.log("TextureId", draw_cmd.TextureId);
+                if (!gl) {
+                    console.log("i: pos.x pos.y uv.x uv.y col");
+                    for (let i = 0; i < Math.min(3, draw_cmd.ElemCount); ++i) {
+                        const view: ImGui.ImDrawVert = new ImGui.ImDrawVert(draw_list.VtxBuffer.buffer, draw_list.VtxBuffer.byteOffset + i * ImGui.ImDrawVertSize);
+                        console.log(`${i}: ${view.pos[0].toFixed(2)} ${view.pos[1].toFixed(2)} ${view.uv[0].toFixed(5)} ${view.uv[1].toFixed(5)} ${("00000000" + view.col[0].toString(16)).substr(-8)}`);
+                    }
+                }
+
+                if (draw_cmd.UserCallback !== null) {
+                    // User callback (registered via ImDrawList::AddCallback)
+                    draw_cmd.UserCallback(draw_list, draw_cmd);
+                } else {
+                    const clip_rect = new ImGui.ImVec4(draw_cmd.ClipRect.x - pos.x, draw_cmd.ClipRect.y - pos.y, draw_cmd.ClipRect.z - pos.x, draw_cmd.ClipRect.w - pos.y);
+                    if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0 && clip_rect.w >= 0.0) {
+                        // Apply scissor/clipping rectangle
+                        gl && gl.scissor(clip_rect.x, clip_rect.y, clip_rect.z - clip_rect.x, clip_rect.w - clip_rect.y);
+
+                        // Bind texture, Draw
+                        gl && gl.bindTexture(gl.TEXTURE_2D, draw_cmd.TextureId);
+                        gl && gl.drawElements(gl.TRIANGLES, draw_cmd.ElemCount, idx_buffer_type, idx_buffer_offset);
+                    }
+                }
+
+                idx_buffer_offset += draw_cmd.ElemCount * ImGui.ImDrawIdxSize;
+            });
+        });
+
+        // Restore modified GL state
+        
+        gl && (last_program !== null) && gl.useProgram(last_program);
+        gl && (last_texture0 !== null) && gl.bindTexture(gl.TEXTURE_2D, last_texture0);
+        gl && (last_active_texture !== null) && gl.activeTexture(last_active_texture);
+        gl && gl.disableVertexAttribArray(g_AttribLocationPosition);
+        gl && gl.disableVertexAttribArray(g_AttribLocationUV);
+        gl && gl.disableVertexAttribArray(g_AttribLocationColor);
+        gl && (last_vertex_array !== null) && gl.bindVertexArray(last_vertex_array);
+        gl && (last_array_buffer !== null) && gl.bindBuffer(gl.ARRAY_BUFFER, last_array_buffer);
+        gl && (last_element_array_buffer !== null) && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+        gl && (last_viewport !== null) && gl.viewport(last_viewport[0], last_viewport[1], last_viewport[2], last_viewport[3]);
+        gl && (last_scissor_box !== null) && gl.scissor(last_scissor_box[0], last_scissor_box[1], last_scissor_box[2], last_scissor_box[3]);
+        gl && (last_blend_equation_rgb !== null && last_blend_equation_alpha !== null) && gl.blendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+        gl && (last_blend_src_rgb !== null && last_blend_src_alpha !== null && last_blend_dst_rgb !== null && last_blend_dst_alpha !== null) && gl.blendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
+        gl && (last_enable_blend ? gl.enable(gl.BLEND) : gl.disable(gl.BLEND));
+        gl && (last_enable_cull_face ? gl.enable(gl.CULL_FACE) : gl.disable(gl.CULL_FACE));
+        gl && (last_enable_depth_test ? gl.enable(gl.DEPTH_TEST) : gl.disable(gl.DEPTH_TEST));
+        gl && (last_enable_scissor_test ? gl.enable(gl.SCISSOR_TEST) : gl.disable(gl.SCISSOR_TEST));
+        // glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
+    }
+}
+
+let gl: WebGL2RenderingContext = null;
+let app: PIXI.Application = null;
+
+class ImGuiWindowLayer extends PIXI.Sprite
+{
+    public readonly window: ImGuiWindow;
+    constructor(window: ImGuiWindow, tex:PIXI.RenderTexture)
+    {
+        super();
+        this.pluginName = "imgui_renderer";
+        this.window = window;
+    }
+}
+
+export class ImGuiWindow extends PIXI.Container
+{
+    public readonly ctx: ImGui.ImGuiContext;
+    public readonly io: ImGui.ImGuiIO;
+    private sizeX: number;
+    private sizeY: number;
+    public getSizeX(): number { return this.sizeX; }
+    public getSizeY(): number { return this.sizeY; }
+
+    private baseTex: PIXI.BaseRenderTexture = new PIXI.BaseRenderTexture({scaleMode: PIXI.SCALE_MODES.LINEAR, resolution: 1, type: PIXI.TYPES.FLOAT, format: PIXI.FORMATS.RGBA});
+    private tex: PIXI.RenderTexture = new PIXI.RenderTexture(this.baseTex);
+    
+    private surface: PIXI.Sprite = new PIXI.Sprite(this.tex);
+    private imgui: ImGuiWindowLayer = new ImGuiWindowLayer(this, this.tex);
+    
+    private update: (dt: number) => void;
+    constructor(sizeX: number, sizeY: number, update: (dt: number) => void)
+    {
+        super();
+
+        this.ctx = ImGui.CreateContext(contextIOs.length == 0 ? null : contextIOs[0].Fonts);
+        ImGui.SetCurrentContext(this.ctx);
+        this.io = ImGui.GetIO();
+
+        contexts.push(this.ctx);
+        contextIOs.push(this.io);
+
+        if (contexts.length == 1)
+        {
+            CreateFontsTexture();
+        }
+
+        if (typeof(window) !== "undefined") {
+            ImGui.LoadIniSettingsFromMemory(window.localStorage.getItem("imgui.ini") || "");
+        }
+
+        if (typeof(navigator) !== "undefined") {
+            this.io.ConfigMacOSXBehaviors = navigator.platform.match(/Mac/) !== null;
+        }
+
+        this.io.SetClipboardTextFn = (user_data: any, text: string): void => {
+            clipboard_text = text;
+            // console.log(`set clipboard_text: "${clipboard_text}"`);
+            if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+                // console.log(`clipboard.writeText: "${clipboard_text}"`);
+                (navigator as any).clipboard.writeText(clipboard_text).then((): void => {
+                    // console.log(`clipboard.writeText: "${clipboard_text}" done.`);
+                });
+            }
+        };
+        this.io.GetClipboardTextFn = (user_data: any): string => {
+            // if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+            //     console.log(`clipboard.readText: "${clipboard_text}"`);
+            //     (navigator as any).clipboard.readText().then((text: string): void => {
+            //         clipboard_text = text;
+            //         console.log(`clipboard.readText: "${clipboard_text}" done.`);
+            //     });
+            // }
+            // console.log(`get clipboard_text: "${clipboard_text}"`);
+            return clipboard_text;
+        };
+        this.io.ClipboardUserData = null;
+
+        // Setup back-end capabilities flags
+        this.io.BackendFlags |= ImGui.BackendFlags.HasMouseCursors;   // We can honor GetMouseCursor() values (optional)
+
+        // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+        this.io.KeyMap[ImGui.Key.Tab] = 9;
+        this.io.KeyMap[ImGui.Key.LeftArrow] = 37;
+        this.io.KeyMap[ImGui.Key.RightArrow] = 39;
+        this.io.KeyMap[ImGui.Key.UpArrow] = 38;
+        this.io.KeyMap[ImGui.Key.DownArrow] = 40;
+        this.io.KeyMap[ImGui.Key.PageUp] = 33;
+        this.io.KeyMap[ImGui.Key.PageDown] = 34;
+        this.io.KeyMap[ImGui.Key.Home] = 36;
+        this.io.KeyMap[ImGui.Key.End] = 35;
+        this.io.KeyMap[ImGui.Key.Insert] = 45;
+        this.io.KeyMap[ImGui.Key.Delete] = 46;
+        this.io.KeyMap[ImGui.Key.Backspace] = 8;
+        this.io.KeyMap[ImGui.Key.Space] = 32;
+        this.io.KeyMap[ImGui.Key.Enter] = 13;
+        this.io.KeyMap[ImGui.Key.Escape] = 27;
+        this.io.KeyMap[ImGui.Key.A] = 65;
+        this.io.KeyMap[ImGui.Key.C] = 67;
+        this.io.KeyMap[ImGui.Key.V] = 86;
+        this.io.KeyMap[ImGui.Key.X] = 88;
+        this.io.KeyMap[ImGui.Key.Y] = 89;
+        this.io.KeyMap[ImGui.Key.Z] = 90;
+
+        this.update = update;
+        this.resize(sizeX, sizeY);
+        this.imgui.pluginName = 'imgui_renderer';
+        this.addChild(this.surface);
+        app.renderer.plugins.interaction.addListener("mousedown", this.mouseDown.bind(this));
+        app.renderer.plugins.interaction.addListener("mouseup", this.mouseUp.bind(this));
+        app.ticker.add(this.updateInternal.bind(this));
+
+        this.interactive = false;
+        this.interactiveChildren = true;
+
+        this.surface.interactive = false;
+    }
+    withContext(cb: () => void)
+    {
+        ImGui.SetCurrentContext(this.ctx);
+        cb();
+    }
+    mouseDown(e: PIXI.interaction.InteractionEvent): void
+    {
+        if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface)
+        {
+            this.io.MouseDown[mouse_button_map[0]] = true;
+        }
+    }
+    mouseUp(e: PIXI.interaction.InteractionEvent): void
+    {
+        if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface)
+        {
+            this.io.MouseDown[mouse_button_map[0]] = false;
+        }
+    }
+    resize(sizeX: number, sizeY: number)
+    {
+        this.sizeX = sizeX;
+        this.sizeY = sizeY;
+        this.baseTex.resize(sizeX, sizeY);
+        this.tex.frame = new PIXI.Rectangle(0, 0, this.baseTex.width, this.baseTex.height);
+    }
+    updateInternal(deltaTime: number)
+    {
+        const dt: number = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+
+        ImGui.SetCurrentContext(this.ctx);
+
+        if (this.io.WantSaveIniSettings) {
+            this.io.WantSaveIniSettings = false;
+            if (typeof(window) !== "undefined") {
+                window.localStorage.setItem("imgui.ini", ImGui.SaveIniSettingsToMemory());
+            }
+        }
+
+        this.io.DisplaySize.x = this.sizeX;
+        this.io.DisplaySize.y = this.sizeY;
+        this.io.DisplayFramebufferScale.x = 1;
+        this.io.DisplayFramebufferScale.y = 1;
+
+        this.io.DeltaTime = dt;
+
+        let localPos: PIXI.Point = this.toLocal(app.renderer.plugins.interaction.mouse.global);
+        if (localPos.x < 0 || localPos.y < 0 || localPos.x >= this.sizeX || localPos.y >= this.sizeY)
+        {
+            localPos = new PIXI.Point(-Number.MAX_VALUE, -Number.MAX_VALUE);
+        }
+        this.io.MousePos.x = localPos.x;
+        this.io.MousePos.y = localPos.y;
+
+        if (this.io.WantSetMousePos) {
+            console.log("TODO: MousePos", this.io.MousePos.x, this.io.MousePos.y);
+        }
+
+        if (typeof(document) !== "undefined") {
+            if (this.io.MouseDrawCursor) {
+                document.body.style.cursor = "none";
+            } else {
+                switch (ImGui.GetMouseCursor()) {
+                    case ImGui.MouseCursor.None: document.body.style.cursor = "none"; break;
+                    default: case ImGui.MouseCursor.Arrow: document.body.style.cursor = "default"; break;
+                    case ImGui.MouseCursor.TextInput: document.body.style.cursor = "text"; break;         // When hovering over InputText, etc.
+                    case ImGui.MouseCursor.ResizeAll: document.body.style.cursor = "move"; break;         // Unused
+                    case ImGui.MouseCursor.ResizeNS: document.body.style.cursor = "ns-resize"; break;     // When hovering over an horizontal border
+                    case ImGui.MouseCursor.ResizeEW: document.body.style.cursor = "ew-resize"; break;     // When hovering over a vertical border or a column
+                    case ImGui.MouseCursor.ResizeNESW: document.body.style.cursor = "nesw-resize"; break; // When hovering over the bottom-left corner of a window
+                    case ImGui.MouseCursor.ResizeNWSE: document.body.style.cursor = "nwse-resize"; break; // When hovering over the bottom-right corner of a window
+                    case ImGui.MouseCursor.Hand: document.body.style.cursor = "move"; break;
+                }
+            }
+        }
+
+        // Gamepad navigation mapping [BETA]
+        for (let i = 0; i < this.io.NavInputs.length; ++i) {
+            this.io.NavInputs[i] = 0.0;
+        }
+        if (this.io.ConfigFlags & ImGui.ConfigFlags.NavEnableGamepad) {
+            // Update gamepad inputs
+            const gamepads: (Gamepad | null)[] = (typeof(navigator) !== "undefined" && typeof(navigator.getGamepads) === "function") ? navigator.getGamepads() : [];
+            for (let i = 0; i < gamepads.length; ++i) {
+                const gamepad: Gamepad | null = gamepads[i];
+                if (!gamepad) { continue; }
+                const buttons_count: number = gamepad.buttons.length;
+                const axes_count: number = gamepad.axes.length;
+                const MAP_BUTTON = function(NAV_NO: number, BUTTON_NO: number): void {
+                    if (!gamepad) { return; }
+                    if (buttons_count > BUTTON_NO && gamepad.buttons[BUTTON_NO].pressed)
+                        this.io.NavInputs[NAV_NO] = 1.0;
+                }
+                const MAP_ANALOG = function(NAV_NO: number, AXIS_NO: number, V0: number, V1: number): void {
+                    if (!gamepad) { return; }
+                    let v: number = (axes_count > AXIS_NO) ? gamepad.axes[AXIS_NO] : V0;
+                    v = (v - V0) / (V1 - V0);
+                    if (v > 1.0) v = 1.0;
+                    if (this.io.NavInputs[NAV_NO] < v) this.io.NavInputs[NAV_NO] = v;
+                }
+                // TODO: map input based on vendor and product id
+                // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/id
+                const match: RegExpMatchArray | null = gamepad.id.match(/^([0-9a-f]{4})-([0-9a-f]{4})-.*$/);
+                const match_chrome: RegExpMatchArray | null = gamepad.id.match(/^.*\(.*Vendor: ([0-9a-f]{4}) Product: ([0-9a-f]{4})\).*$/);
+                const vendor: string = (match && match[1]) || (match_chrome && match_chrome[1]) || "0000";
+                const product: string = (match && match[2]) || (match_chrome && match_chrome[2]) || "0000";
+                switch (vendor + product) {
+                    case "046dc216": // Logitech Logitech Dual Action (Vendor: 046d Product: c216)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    1); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      2); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        0); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_ANALOG(ImGui.NavInput.DpadLeft,    4, -0.3, -0.9); // D-Pad Left
+                    MAP_ANALOG(ImGui.NavInput.DpadRight,   4, +0.3, +0.9); // D-Pad Right
+                    MAP_ANALOG(ImGui.NavInput.DpadUp,      5, -0.3, -0.9); // D-Pad Up
+                    MAP_ANALOG(ImGui.NavInput.DpadDown,    5, +0.3, +0.9); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   6); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   7); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    case "046dc21d": // Logitech Gamepad F310 (STANDARD GAMEPAD Vendor: 046d Product: c21d)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    0); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      1); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        2); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_BUTTON(ImGui.NavInput.DpadLeft,    14); // D-Pad Left
+                    MAP_BUTTON(ImGui.NavInput.DpadRight,   15); // D-Pad Right
+                    MAP_BUTTON(ImGui.NavInput.DpadUp,      12); // D-Pad Up
+                    MAP_BUTTON(ImGui.NavInput.DpadDown,    13); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_ANALOG(ImGui.NavInput.TweakSlow,   6, +0.3, +0.9); // L2 / LT
+                    MAP_ANALOG(ImGui.NavInput.TweakFast,   7, +0.3, +0.9); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    case "2dc86001": // 8Bitdo SN30 Pro  8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6001)
+                    case "2dc86101": // 8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6101)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    1); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      0); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        4); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_ANALOG(ImGui.NavInput.DpadLeft,    6, -0.3, -0.9); // D-Pad Left
+                    MAP_ANALOG(ImGui.NavInput.DpadRight,   6, +0.3, +0.9); // D-Pad Right
+                    MAP_ANALOG(ImGui.NavInput.DpadUp,      7, -0.3, -0.9); // D-Pad Up
+                    MAP_ANALOG(ImGui.NavInput.DpadDown,    7, +0.3, +0.9); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   6); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   7); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   8); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   9); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    default: // standard gamepad: https://w3c.github.io/gamepad/#remapping
+                    MAP_BUTTON(ImGui.NavInput.Activate,    0); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      1); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        2); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_BUTTON(ImGui.NavInput.DpadLeft,    14); // D-Pad Left
+                    MAP_BUTTON(ImGui.NavInput.DpadRight,   15); // D-Pad Right
+                    MAP_BUTTON(ImGui.NavInput.DpadUp,      12); // D-Pad Up
+                    MAP_BUTTON(ImGui.NavInput.DpadDown,    13); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   6); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   7); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                }
+            }
+        }
+
+        ImGui.NewFrame();
+
+        this.update(dt);
+
+        ImGui.EndFrame();
+        ImGui.Render();
+
+        app.renderer.render(this.imgui, this.tex);
+
+        this.surface.interactive = this.io.WantCaptureMouse;
+    }
+}
+
+let canvas: HTMLCanvasElement | null = null;
+
+//export let gl: WebGL2RenderingContext | null = null;
+let g_ShaderHandle: WebGLProgram | null = null;
+let g_VertHandle: WebGLShader | null = null;
+let g_FragHandle: WebGLShader | null = null;
+let g_AttribLocationTex: WebGLUniformLocation | null = null;
+let g_AttribLocationProjMtx: WebGLUniformLocation | null = null;
+let g_AttribLocationPosition: GLint = -1;
+let g_AttribLocationUV: GLint = -1;
+let g_AttribLocationColor: GLint = -1;
+let g_VaoHandle: WebGLVertexArrayObject = null;
+let g_VboHandle: WebGLBuffer | null = null;
+let g_ElementsHandle: WebGLBuffer | null = null;
+let g_FontTexture: WebGLTexture | null = null;
+
+function document_on_copy(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        event.clipboardData.setData("text/plain", clipboard_text);
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function document_on_cut(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        event.clipboardData.setData("text/plain", clipboard_text);
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function document_on_paste(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        clipboard_text = event.clipboardData.getData("text/plain");
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function window_on_gamepadconnected(event: any /* GamepadEvent */): void {
+    console.log("Gamepad connected at index %d: %s. %d buttons, %d axes.",
+    event.gamepad.index, event.gamepad.id,
+    event.gamepad.buttons.length, event.gamepad.axes.length);
+}
+
+function window_on_gamepaddisconnected(event: any /* GamepadEvent */): void {
+    console.log("Gamepad disconnected at index %d: %s.",
+    event.gamepad.index, event.gamepad.id);
+}
+
+function canvas_on_blur(event: FocusEvent): void {
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = false;
+        io.KeyShift = false;
+        io.KeyAlt = false;
+        io.KeySuper = false;
+        for (let i = 0; i < io.KeysDown.length; ++i) {
+            io.KeysDown[i] = false;
+        }
+        for (let i = 0; i < io.MouseDown.length; ++i) {
+            io.MouseDown[i] = false;
+        }
+    }
+}
+
+function canvas_on_keydown(event: KeyboardEvent): void {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = event.ctrlKey;
+        io.KeyShift = event.shiftKey;
+        io.KeyAlt = event.altKey;
+        io.KeySuper = event.metaKey;
+        ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+        io.KeysDown[event.keyCode] = true;
+        // forward to the keypress event
+        if (/*io.WantCaptureKeyboard ||*/ event.key === "Tab") {
+            event.preventDefault();
+        }
+    }
+}
+
+function canvas_on_keyup(event: KeyboardEvent): void  {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = event.ctrlKey;
+        io.KeyShift = event.shiftKey;
+        io.KeyAlt = event.altKey;
+        io.KeySuper = event.metaKey;
+        ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+        io.KeysDown[event.keyCode] = false;
+        if (io.WantCaptureKeyboard) {
+            event.preventDefault();
+        }
+    }
+}
+
+function canvas_on_keypress(event: KeyboardEvent): void  {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.AddInputCharacter(event.charCode);
+        if (io.WantCaptureKeyboard) {
+            event.preventDefault();
+        }
+    }
+}
+
+// MouseEvent.button
+// A number representing a given button:
+// 0: Main button pressed, usually the left button or the un-initialized state
+// 1: Auxiliary button pressed, usually the wheel button or the middle button (if present)
+// 2: Secondary button pressed, usually the right button
+// 3: Fourth button, typically the Browser Back button
+// 4: Fifth button, typically the Browser Forward button
+const mouse_button_map: number[] = [ 0, 2, 1, 3, 4 ];
+
+function canvas_on_contextmenu(event: Event): void  {
+    for (var io of contextIOs)
+    {
+        if (io.WantCaptureMouse) { event.preventDefault(); }
+    }
+}
+
+function canvas_on_wheel(event: WheelEvent): void  {
+    for (var io of contextIOs)
+    {
+        let scale: number = 1.0;
+        switch (event.deltaMode) {
+            case event.DOM_DELTA_PIXEL: scale = 0.01; break;
+            case event.DOM_DELTA_LINE: scale = 0.2; break;
+            case event.DOM_DELTA_PAGE: scale = 1.0; break;
+        }
+        io.MouseWheelH = event.deltaX * scale;
+        io.MouseWheel = -event.deltaY * scale; // Mouse wheel: 1 unit scrolls about 5 lines text.
+        if (io.WantCaptureMouse) {
+            event.preventDefault();
+        }
+    }
+}
+
+export function PrePIXIInit(): void
+{
+    PIXI.Renderer.registerPlugin("imgui_renderer", U.fromConstructor(ImGuiImplInternalRenderer));
+}
+
+export function Init(_app: PIXI.Application): void {
+    // Setup Dear ImGui binding
+    ImGui.IMGUI_CHECKVERSION();
+
+    if (typeof(document) !== "undefined") {
+        document.body.addEventListener("copy", document_on_copy);
+        document.body.addEventListener("cut", document_on_cut);
+        document.body.addEventListener("paste", document_on_paste);
+    }
+
+    if (typeof(window) !== "undefined") {
+        window.addEventListener("gamepadconnected", window_on_gamepadconnected);
+        window.addEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+    }
+
+    app = _app;
+    gl = (app.renderer as any).gl;
+    canvas = app.view;
+
+    gl.getExtension("EXT_color_buffer_float");
+
+    if (canvas !== null) {
+        canvas.style.touchAction = "none"; // Disable browser handling of all panning and zooming gestures.
+        canvas.addEventListener("blur", canvas_on_blur);
+        canvas.addEventListener("keydown", canvas_on_keydown);
+        canvas.addEventListener("keyup", canvas_on_keyup);
+        canvas.addEventListener("keypress", canvas_on_keypress);
+        canvas.addEventListener("contextmenu", canvas_on_contextmenu);
+        canvas.addEventListener("wheel", canvas_on_wheel);
+    }
+
+    CreateDeviceObjects();
+}
+
+export function Shutdown(): void {
+    DestroyDeviceObjects();
+
+    if (canvas !== null) {
+        canvas.removeEventListener("blur", canvas_on_blur);
+        canvas.removeEventListener("keydown", canvas_on_keydown);
+        canvas.removeEventListener("keyup", canvas_on_keyup);
+        canvas.removeEventListener("keypress", canvas_on_keypress);
+        canvas.removeEventListener("contextmenu", canvas_on_contextmenu);
+        canvas.removeEventListener("wheel", canvas_on_wheel);
+    }
+
+    app = null;
+    canvas = null;
+
+    if (typeof(window) !== "undefined") {
+        window.removeEventListener("gamepadconnected", window_on_gamepadconnected);
+        window.removeEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+    }
+
+    if (typeof(document) !== "undefined") {
+        document.body.removeEventListener("copy", document_on_copy);
+        document.body.removeEventListener("cut", document_on_cut);
+        document.body.removeEventListener("paste", document_on_paste);
+    }
+}
+
+function CreateFontsTexture(): void {
+    const io = ImGui.GetIO();
+
+    // Backup GL state
+    const last_texture: WebGLTexture | null = gl && gl.getParameter(gl.TEXTURE_BINDING_2D);
+
+    // Build texture atlas
+    // const width: number = 256;
+    // const height: number = 256;
+    // const pixels: Uint8Array = new Uint8Array(4 * width * height).fill(0xff);
+    const { width, height, pixels } = io.Fonts.GetTexDataAsRGBA32();   // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+    // console.log(`font texture ${width} x ${height} @ ${pixels.length}`);
+
+    // Upload texture to graphics system
+    g_FontTexture = gl && gl.createTexture();
+    gl && gl.bindTexture(gl.TEXTURE_2D, g_FontTexture);
+    gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+    gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+    // gl && gl.pixelStorei(gl.UNPACK_ROW_LENGTH); // WebGL2
+    gl && gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+
+    // Store our identifier
+    io.Fonts.TexID = g_FontTexture || { foo: "bar" };
+    // console.log("font texture id", g_FontTexture);
+
+    // Restore modified GL state
+    gl && last_texture && gl.bindTexture(gl.TEXTURE_2D, last_texture);
+}
+
+function DestroyFontsTexture(): void {
+    const io = ImGui.GetIO();
+    io.Fonts.TexID = null;
+    gl && gl.deleteTexture(g_FontTexture); g_FontTexture = null;
+}
+
+function CreateDeviceObjects(): void {
+    const vertex_shader: string[] = [
+        "#version 300 es",
+        "uniform mat4 ProjMtx;",
+        "in vec2 Position;",
+        "in vec2 UV;",
+        "in vec4 Color;",
+        "out vec2 Frag_UV;",
+        "out vec4 Frag_Color;",
+        "void main() {",
+        "	Frag_UV = UV;",
+        "	Frag_Color = Color;",
+        "	gl_Position = ProjMtx * vec4(Position.xy,0,1);",
+        "}",
+    ];
+
+    const fragment_shader: string[] = [
+        "#version 300 es",
+        "precision mediump float;", // WebGL requires precision specifiers
+        "uniform sampler2D Texture;",
+        "in vec2 Frag_UV;",
+        "in vec4 Frag_Color;",
+        "out vec4 OutColor;",
+        "void main() {",
+        "	OutColor = Frag_Color * texture(Texture, Frag_UV);",
+        "}",
+    ];
+
+    g_ShaderHandle = gl && gl.createProgram();
+    g_VertHandle = gl && gl.createShader(gl.VERTEX_SHADER);
+    g_FragHandle = gl && gl.createShader(gl.FRAGMENT_SHADER);
+    gl && gl.shaderSource(g_VertHandle as WebGLShader, vertex_shader.join("\n"));
+    gl && gl.shaderSource(g_FragHandle as WebGLShader, fragment_shader.join("\n"));
+    gl && gl.compileShader(g_VertHandle as WebGLShader);
+    gl && gl.compileShader(g_FragHandle as WebGLShader);
+    gl && gl.attachShader(g_ShaderHandle as WebGLProgram, g_VertHandle as WebGLShader);
+    gl && gl.attachShader(g_ShaderHandle as WebGLProgram, g_FragHandle as WebGLShader);
+    gl && gl.linkProgram(g_ShaderHandle as WebGLProgram);
+
+    g_AttribLocationTex = gl && gl.getUniformLocation(g_ShaderHandle as WebGLProgram, "Texture");
+    g_AttribLocationProjMtx = gl && gl.getUniformLocation(g_ShaderHandle as WebGLProgram, "ProjMtx");
+    g_AttribLocationPosition = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "Position") || 0;
+    g_AttribLocationUV = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "UV") || 0;
+    g_AttribLocationColor = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "Color") || 0;
+
+    g_VaoHandle = gl && gl.createVertexArray();
+    g_VboHandle = gl && gl.createBuffer();
+    g_ElementsHandle = gl && gl.createBuffer();
+
+}
+
+function DestroyDeviceObjects(): void {
+    DestroyFontsTexture();
+
+    gl && gl.deleteVertexArray(g_VaoHandle); g_VaoHandle = null;
+    gl && gl.deleteBuffer(g_VboHandle); g_VboHandle = null;
+    gl && gl.deleteBuffer(g_ElementsHandle); g_ElementsHandle = null;
+
+    g_AttribLocationTex = null;
+    g_AttribLocationProjMtx = null;
+    g_AttribLocationPosition = -1;
+    g_AttribLocationUV = -1;
+    g_AttribLocationColor = -1;
+
+    gl && gl.deleteProgram(g_ShaderHandle); g_ShaderHandle = null;
+    gl && gl.deleteShader(g_VertHandle); g_VertHandle = null;
+    gl && gl.deleteShader(g_FragHandle); g_FragHandle = null;
+}
diff --git a/src/main.js b/src/main.js
index f763140..0c19249 100644
--- a/src/main.js
+++ b/src/main.js
@@ -1,4 +1,4 @@
-System.register(["../imgui-js/example/imgui_impl", "imgui-js"], function (exports_1, context_1) {
+System.register(["./imgui_impl", "imgui-js", "pixi.js", "./utils"], function (exports_1, context_1) {
     "use strict";
     var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
         return new (P || (P = Promise))(function (resolve, reject) {
@@ -8,7 +8,7 @@
             step((generator = generator.apply(thisArg, _arguments || [])).next());
         });
     };
-    var ImGui_Impl, ImGui, imgui_js_1, imgui_js_2, clearColor, windowOpen, text;
+    var ImGui_Impl, imgui_impl_1, ImGui, imgui_js_1, imgui_js_2, PIXI, U, clearColor;
     var __moduleName = context_1 && context_1.id;
     function main() {
         return __awaiter(this, void 0, void 0, function* () {
@@ -20,74 +20,88 @@
     function init() {
         console.log("init()");
         console.log("Total allocated space (uordblks) @ _init:", ImGui.bind.mallinfo().uordblks);
-        // Setup Dear ImGui binding
-        ImGui.IMGUI_CHECKVERSION();
-        ImGui.CreateContext();
-        const io = ImGui.GetIO();
-        io.ConfigFlags |= ImGui.ConfigFlags.NavEnableKeyboard; // Enable Keyboard Controls
-        // Setup style
-        ImGui.StyleColorsLight();
+        ImGui_Impl.PrePIXIInit();
+        let settings = { width: 1, height: 1, antialias: true, backgroundColor: U.vec2col(clearColor) };
+        let app = new PIXI.Application(settings);
         const output = document.getElementById("output") || document.body;
-        const canvas = document.createElement("canvas");
-        output.appendChild(canvas);
-        canvas.tabIndex = 1;
-        canvas.style.position = "absolute";
-        canvas.style.left = "0px";
-        canvas.style.right = "0px";
-        canvas.style.top = "0px";
-        canvas.style.bottom = "0px";
-        canvas.style.width = "100%";
-        canvas.style.height = "100%";
-        ImGui_Impl.Init(canvas);
-        window.requestAnimationFrame(loop);
+        output.appendChild(app.view);
+        app.view.tabIndex = 1;
+        app.view.style.position = "absolute";
+        app.view.style.left = "0px";
+        app.view.style.right = "0px";
+        app.view.style.top = "0px";
+        app.view.style.bottom = "0px";
+        app.view.style.width = "100%";
+        app.view.style.height = "100%";
+        ImGui_Impl.Init(app);
+        app.ticker.add((deltaTime) => {
+            const dt = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+            app.render();
+        });
+        let resizeFunc = function () {
+            app.renderer.resize(window.innerWidth, window.innerHeight);
+        };
+        let bg = new PIXI.Graphics();
+        bg.beginFill(0xFF0000);
+        bg.drawRect(100, 100, 300, 300);
+        bg.endFill();
+        let styleCb = () => { ImGui.StyleColorsLight(); };
+        const imgui = new imgui_impl_1.ImGuiWindow(512, 512, makeUpdate());
+        const imgui2 = new imgui_impl_1.ImGuiWindow(512, 512, makeUpdate2());
+        imgui2.x = 200;
+        imgui2.y = 400;
+        imgui.withContext(styleCb);
+        imgui2.withContext(styleCb);
+        app.stage.addChild(imgui);
+        app.stage.addChild(bg);
+        app.stage.addChild(imgui2);
+        window.onresize = resizeFunc;
+        resizeFunc();
     }
-    function render(timeElapsed) {
-        ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(600, 400), ImGui.ImGuiCond.Always);
-        ImGui.Begin("Test Window", (_ = windowOpen) => windowOpen = _, 0);
-        if (ImGui.Button("Add Text")) {
-            text += "A";
-        }
-        ImGui.Text(text);
-        ImGui.End();
+    function makeUpdate() {
+        let text = "text";
+        return (timeElapsed) => {
+            ImGui.SetNextWindowPos(new imgui_js_2.ImVec2(0, 0));
+            ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(500, 500), ImGui.ImGuiCond.Always);
+            ImGui.Begin("Test Window");
+            if (ImGui.Button("Add Text")) {
+                text += "A";
+            }
+            ImGui.Text(text);
+            ImGui.End();
+        };
     }
-    function loop(timeElapsed) {
-        ImGui_Impl.NewFrame(timeElapsed);
-        ImGui.NewFrame();
-        render(timeElapsed);
-        ImGui.EndFrame();
-        // Rendering
-        ImGui.Render();
-        const gl = ImGui_Impl.gl;
-        if (gl) {
-            gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
-            gl.clearColor(clearColor.x, clearColor.y, clearColor.z, clearColor.w);
-            gl.clear(gl.COLOR_BUFFER_BIT);
-            //gl.useProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound
-        }
-        const ctx = ImGui_Impl.ctx;
-        if (ctx) {
-            // ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-            ctx.fillStyle = `rgba(${clearColor.x * 0xff}, ${clearColor.y * 0xff}, ${clearColor.z * 0xff}, ${clearColor.w})`;
-            ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-        }
-        ImGui_Impl.RenderDrawData(ImGui.GetDrawData());
-        window.requestAnimationFrame(loop);
+    function makeUpdate2() {
+        let text = "";
+        return (timeElapsed) => {
+            ImGui.SetNextWindowPos(new imgui_js_2.ImVec2(0, 0));
+            ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(500, 500), ImGui.ImGuiCond.Always);
+            ImGui.Begin("Test Window 2");
+            ImGui.InputText("Input: ", (_ = text) => text = _);
+            ImGui.Text(text);
+            ImGui.End();
+        };
     }
     return {
         setters: [
             function (ImGui_Impl_1) {
                 ImGui_Impl = ImGui_Impl_1;
+                imgui_impl_1 = ImGui_Impl_1;
             },
             function (ImGui_1) {
                 ImGui = ImGui_1;
                 imgui_js_1 = ImGui_1;
                 imgui_js_2 = ImGui_1;
+            },
+            function (PIXI_1) {
+                PIXI = PIXI_1;
+            },
+            function (U_1) {
+                U = U_1;
             }
         ],
         execute: function () {
             clearColor = new imgui_js_1.ImVec4(0.7, 0.9, 1, 1);
-            windowOpen = true;
-            text = "text";
             (function () {
                 if (document.readyState == "complete") {
                     main();
diff --git a/src/main.js.map b/src/main.js.map
index d10898e..c4ec491 100644
--- a/src/main.js.map
+++ b/src/main.js.map
@@ -1 +1 @@
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\ No newline at end of file
+{"version":3,"file":"main.js","sourceRoot":"","sources":["main.ts"],"names":[],"mappings":";;;;;;;;;;;;IASA,SAAe,IAAI;;YAEf,OAAO,CAAC,GAAG,CAAC,QAAQ,CAAC,CAAC;YACtB,MAAM,KAAK,CAAC,OAAO,EAAE,CAAC;YACtB,MAAM,CAAC,qBAAqB,CAAC,IAAI,CAAC,CAAC;QACvC,CAAC;KAAA;IAGD,SAAS,IAAI;QAET,OAAO,CAAC,GAAG,CAAC,QAAQ,CAAC,CAAC;QACtB,OAAO,CAAC,GAAG,CAAC,2CAA2C,EAAE,KAAK,CAAC,IAAI,CAAC,QAAQ,EAAE,CAAC,QAAQ,CAAC,CAAC;QAEzF,UAAU,CAAC,WAAW,EAAE,CAAC;QAEzB,IAAI,QAAQ,GAAG,EAAE,KAAK,EAAE,CAAC,EAAE,MAAM,EAAE,CAAC,EAAE,SAAS,EAAE,IAAI,EAAE,eAAe,EAAE,CAAC,CAAC,OAAO,CAAC,UAAU,CAAC,EAAE,CAAC;QAEhG,IAAI,GAAG,GAAsB,IAAI,IAAI,CAAC,WAAW,CAAC,QAAQ,CAAC,CAAC;QAE5D,MAAM,MAAM,GAAgB,QAAQ,CAAC,cAAc,CAAC,QAAQ,CAAC,IAAI,QAAQ,CAAC,IAAI,CAAC;QAC/E,MAAM,CAAC,WAAW,CAAC,GAAG,CAAC,IAAI,CAAC,CAAC;QAC7B,GAAG,CAAC,IAAI,CAAC,QAAQ,GAAG,CAAC,CAAC;QACtB,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,QAAQ,GAAG,UAAU,CAAC;QACrC,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,IAAI,GAAG,KAAK,CAAC;QAC5B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,KAAK,GAAG,KAAK,CAAC;QAC7B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,GAAG,GAAG,KAAK,CAAC;QAC3B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,MAAM,GAAG,KAAK,CAAC;QAC9B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,KAAK,GAAG,MAAM,CAAC;QAC9B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,MAAM,GAAG,MAAM,CAAC;QAE/B,UAAU,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC;QAErB,GAAG,CAAC,MAAM,CAAC,GAAG,CACV,CAAC,SAAiB,EAAE,EAAE;YAElB,MAAM,EAAE,GAAW,SAAS,GAAG,CAAC,GAAG,CAAC,IAAI,GAAG,IAAI,CAAC,QAAQ,CAAC,WAAW,CAAC,CAAC;YAEtE,GAAG,CAAC,MAAM,EAAE,CAAC;QACjB,CAAC,CACJ,CAAC;QAGF,IAAI,UAAU,GAAG;YAEb,GAAG,CAAC,QAAQ,CAAC,MAAM,CAAC,MAAM,CAAC,UAAU,EAAE,MAAM,CAAC,WAAW,CAAC,CAAC;QAC/D,CAAC,CAAC;QAEF,IAAI,EAAE,GAAkB,IAAI,IAAI,CAAC,QAAQ,EAAE,CAAC;QAC5C,EAAE,CAAC,SAAS,CAAC,QAAQ,CAAC,CAAC;QACvB,EAAE,CAAC,QAAQ,CAAC,GAAG,EAAE,GAAG,EAAE,GAAG,EAAE,GAAG,CAAC,CAAC;QAChC,EAAE,CAAC,OAAO,EAAE,CAAC;QAEb,IAAI,OAAO,GAAe,GAAG,EAAE,GAAG,KAAK,CAAC,gBAAgB,EAAE,CAAC,CAAC,CAAC,CAAC;QAE9D,MAAM,KAAK,GAAgB,IAAI,wBAAW,CAAC,GAAG,EAAE,GAAG,EAAE,UAAU,EAAE,CAAC,CAAC;QACnE,MAAM,MAAM,GAAgB,IAAI,wBAAW,CAAC,GAAG,EAAE,GAAG,EAAE,WAAW,EAAE,CAAC,CAAC;QACrE,MAAM,CAAC,CAAC,GAAG,GAAG,CAAC;QACf,MAAM,CAAC,CAAC,GAAG,GAAG,CAAC;QAEf,KAAK,CAAC,WAAW,CAAC,OAAO,CAAC,CAAC;QAC3B,MAAM,CAAC,WAAW,CAAC,OAAO,CAAC,CAAC;QAE5B,GAAG,CAAC,KAAK,CAAC,QAAQ,CAAC,KAAK,CAAC,CAAC;QAC1B,GAAG,CAAC,KAAK,CAAC,QAAQ,CAAC,EAAE,CAAC,CAAC;QACvB,GAAG,CAAC,KAAK,CAAC,QAAQ,CAAC,MAAM,CAAC,CAAC;QAE3B,MAAM,CAAC,QAAQ,GAAG,UAAU,CAAC;QAC7B,UAAU,EAAE,CAAC;IACjB,CAAC;IAED,SAAS,UAAU;QAEf,IAAI,IAAI,GAAW,MAAM,CAAC;QAC1B,OAAO,CAAC,WAAmB,EAAE,EAAE;YAE3B,KAAK,CAAC,gBAAgB,CAAC,IAAI,iBAAM,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;YACzC,KAAK,CAAC,iBAAiB,CAAC,IAAI,iBAAM,CAAC,GAAG,EAAE,GAAG,CAAC,EAAE,KAAK,CAAC,SAAS,CAAC,MAAM,CAAC,CAAC;YACtE,KAAK,CAAC,KAAK,CAAC,aAAa,CAAC,CAAC;YAC3B,IAAI,KAAK,CAAC,MAAM,CAAC,UAAU,CAAC,EAC5B;gBACI,IAAI,IAAI,GAAG,CAAC;aACf;YACD,KAAK,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;YACjB,KAAK,CAAC,GAAG,EAAE,CAAC;QAChB,CAAC,CAAC;IACN,CAAC;IAED,SAAS,WAAW;QAEhB,IAAI,IAAI,GAAU,EAAE,CAAC;QACrB,OAAO,CAAC,WAAmB,EAAE,EAAE;YAE3B,KAAK,CAAC,gBAAgB,CAAC,IAAI,iBAAM,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;YACzC,KAAK,CAAC,iBAAiB,CAAC,IAAI,iBAAM,CAAC,GAAG,EAAE,GAAG,CAAC,EAAE,KAAK,CAAC,SAAS,CAAC,MAAM,CAAC,CAAC;YACtE,KAAK,CAAC,KAAK,CAAC,eAAe,CAAC,CAAC;YAC7B,KAAK,CAAC,SAAS,CAAC,SAAS,EAAE,CAAC,CAAC,GAAG,IAAI,EAAE,EAAE,CAAC,IAAI,GAAG,CAAC,CAAC,CAAC;YACnD,KAAK,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;YACjB,KAAK,CAAC,GAAG,EAAE,CAAC;QAChB,CAAC,CAAC;IACN,CAAC;;;;;;;;;;;;;;;;;;;;YA5FK,UAAU,GAAU,IAAI,iBAAM,CAAC,GAAG,EAAE,GAAG,EAAE,CAAC,EAAE,CAAC,CAAC,CAAC;YA8FrD,CAAC;gBAEI,IAAI,QAAQ,CAAC,UAAU,IAAI,UAAU,EACrC;oBACI,IAAI,EAAE,CAAC;iBACV;qBAED;oBACI,MAAM,CAAC,MAAM,GAAG,IAAI,CAAC;iBACxB;YACL,CAAC,CAAC,EAAE,CAAC;QACN,CAAC"}
\ No newline at end of file
diff --git a/src/main.ts b/src/main.ts
index fcf1b3f..026aae6 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,8 +1,11 @@
-import * as ImGui_Impl from "../imgui-js/example/imgui_impl";
+import * as ImGui_Impl from "./imgui_impl";
+import { ImGuiWindow } from "./imgui_impl";
 import * as ImGui from "imgui-js";
 import { ImGuiIO } from "imgui-js"
 import { ImVec4 } from "imgui-js";
 import { ImVec2 } from "imgui-js";
+import * as PIXI from "pixi.js";
+import * as U from "./utils";
 
 async function main(): Promise<void>
 {
@@ -11,82 +14,98 @@
     window.requestAnimationFrame(init);
 }
 
+const clearColor:ImVec4 = new ImVec4(0.7, 0.9, 1, 1);
 function init(): void
 {
     console.log("init()");
     console.log("Total allocated space (uordblks) @ _init:", ImGui.bind.mallinfo().uordblks);
 
-    // Setup Dear ImGui binding
-    ImGui.IMGUI_CHECKVERSION();
-    ImGui.CreateContext();
+    ImGui_Impl.PrePIXIInit();
 
-    const io: ImGuiIO = ImGui.GetIO();
-    io.ConfigFlags |= ImGui.ConfigFlags.NavEnableKeyboard;  // Enable Keyboard Controls
+    let settings = { width: 1, height: 1, antialias: true, backgroundColor: U.vec2col(clearColor) };
 
-    // Setup style
-    ImGui.StyleColorsLight();
+    let app : PIXI.Application = new PIXI.Application(settings);
 
     const output: HTMLElement = document.getElementById("output") || document.body;
-    const canvas: HTMLCanvasElement = document.createElement("canvas");
-    output.appendChild(canvas);
-    canvas.tabIndex = 1;
-    canvas.style.position = "absolute";
-    canvas.style.left = "0px";
-    canvas.style.right = "0px";
-    canvas.style.top = "0px";
-    canvas.style.bottom = "0px";
-    canvas.style.width = "100%";
-    canvas.style.height = "100%";
-    ImGui_Impl.Init(canvas);
+    output.appendChild(app.view);
+    app.view.tabIndex = 1;
+    app.view.style.position = "absolute";
+    app.view.style.left = "0px";
+    app.view.style.right = "0px";
+    app.view.style.top = "0px";
+    app.view.style.bottom = "0px";
+    app.view.style.width = "100%";
+    app.view.style.height = "100%";
 
-    window.requestAnimationFrame(loop);
-}
+    ImGui_Impl.Init(app);
 
-const clearColor:ImVec4 = new ImVec4(0.7, 0.9, 1, 1);
-let windowOpen: boolean = true;
-let text: string = "text";
-function render(timeElapsed: number): void
-{
-    ImGui.SetNextWindowSize(new ImVec2(600, 400), ImGui.ImGuiCond.Always);
-    ImGui.Begin("Test Window", (_ = windowOpen) => windowOpen = _, 0); 
-    if (ImGui.Button("Add Text"))
+    app.ticker.add(
+        (deltaTime: number) =>
+        {
+            const dt: number = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+
+            app.render();
+        }
+    );
+
+
+    let resizeFunc = function()
     {
-        text += "A";
-    }
-    ImGui.Text(text);
-    ImGui.End();
+        app.renderer.resize(window.innerWidth, window.innerHeight);
+    };
+
+    let bg: PIXI.Graphics = new PIXI.Graphics();
+    bg.beginFill(0xFF0000);
+    bg.drawRect(100, 100, 300, 300);
+    bg.endFill();
+
+    let styleCb: () => void = () => { ImGui.StyleColorsLight(); };
+
+    const imgui: ImGuiWindow = new ImGuiWindow(512, 512, makeUpdate());
+    const imgui2: ImGuiWindow = new ImGuiWindow(512, 512, makeUpdate2());
+    imgui2.x = 200;
+    imgui2.y = 400;
+
+    imgui.withContext(styleCb);
+    imgui2.withContext(styleCb);
+    
+    app.stage.addChild(imgui);
+    app.stage.addChild(bg);
+    app.stage.addChild(imgui2);
+
+    window.onresize = resizeFunc;
+    resizeFunc();
 }
 
-
-function loop(timeElapsed: number): void
+function makeUpdate(): (timeElapsed: number) => void
 {
-    ImGui_Impl.NewFrame(timeElapsed);
-    ImGui.NewFrame();
+    let text: string = "text";
+    return (timeElapsed: number) =>
+    {
+        ImGui.SetNextWindowPos(new ImVec2(0, 0));
+        ImGui.SetNextWindowSize(new ImVec2(500, 500), ImGui.ImGuiCond.Always);
+        ImGui.Begin("Test Window"); 
+        if (ImGui.Button("Add Text"))
+        {
+            text += "A";
+        }
+        ImGui.Text(text);
+        ImGui.End();
+    };
+}
 
-    render(timeElapsed);
-
-    ImGui.EndFrame();
-
-    // Rendering
-    ImGui.Render();
-    const gl: WebGLRenderingContext | null = ImGui_Impl.gl;
-    if (gl) {
-        gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
-        gl.clearColor(clearColor.x, clearColor.y, clearColor.z, clearColor.w);
-        gl.clear(gl.COLOR_BUFFER_BIT);
-        //gl.useProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound
-    }
-
-    const ctx: CanvasRenderingContext2D | null = ImGui_Impl.ctx;
-    if (ctx) {
-        // ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-        ctx.fillStyle = `rgba(${clearColor.x * 0xff}, ${clearColor.y * 0xff}, ${clearColor.z * 0xff}, ${clearColor.w})`;
-        ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-    }
-
-    ImGui_Impl.RenderDrawData(ImGui.GetDrawData());
-
-    window.requestAnimationFrame(loop);
+function makeUpdate2(): (timeElapsed: number) => void
+{
+    let text:string = "";
+    return (timeElapsed: number) =>
+    {
+        ImGui.SetNextWindowPos(new ImVec2(0, 0));
+        ImGui.SetNextWindowSize(new ImVec2(500, 500), ImGui.ImGuiCond.Always);
+        ImGui.Begin("Test Window 2"); 
+        ImGui.InputText("Input: ", (_ = text) => text = _);
+        ImGui.Text(text);
+        ImGui.End();
+    };
 }
 
 (function()

diff --git a/.gitmodules b/.gitmodules
index d6b45d7..fc2be7a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,7 @@
 [submodule "emsdk"]
 	path = emsdk
 	url = https://github.com/emscripten-core/emsdk.git
+	ignore = untracked
+[submodule "pixi.js"]
+	path = pixi.js
+	url = https://git.mhack.io/git/mark/pixi.js.git
diff --git a/imgui-js b/imgui-js
index 9f694ef..9536eca 160000
--- a/imgui-js
+++ b/imgui-js
@@ -1 +1 @@
-Subproject commit 9f694ef7e8e7251c32f7811ba39938951a12097a
+Subproject commit 9536ecad287eb76812087cd3fee1aaacb448c027
diff --git a/indexdev.html b/indexdev.html
index 2f6c3b3..3d27479 100644
--- a/indexdev.html
+++ b/indexdev.html
@@ -2,22 +2,16 @@
     <head>
         <title>7GUI</title>
         <script src="node_modules/systemjs/dist/system.js"></script>
-        <!--
-        <script type="systemjs-importmap">
-            {
-                "imports": {
-                    "imgui-js/example/imgui_impl": "imgui-js/dist/imgui_impl.umd.js"
-                }
-            }
-        </script>
-        -->
         <script>
             System.config({
                 map: {
-                    "imgui-js": "./imgui-js"
+                    "imgui-js": "./imgui-js",
+                    "pixi.js": "./node_modules/pixi.js"
                 },
                 packages: {
-                    "imgui-js": { main: "imgui.js", }
+                    "imgui-js": { main: "imgui.js" },
+                    "pixi.js": { main: "dist/pixi.js" },
+                    "./": { map: { "src/utils": "./src/utils.js", "src/imgui_impl": "./src/imgui_impl.js" } }
                 }
             });
             System.import("./src/main.js");
diff --git a/package-lock.json b/package-lock.json
index ed52494..8bda7e5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,16 +4,34 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@pixi/constants": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/constants/-/constants-5.1.0.tgz",
+      "integrity": "sha512-86cogDvjF9yNvmxeizwkIhA0Kl2z3gUSWMf2daYx903dzyje7fwkzRrKLnqDUn6vSAxRXiska0DMJhwYsIC29w=="
+    },
+    "@pixi/math": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/math/-/math-5.1.0.tgz",
+      "integrity": "sha512-Vf9W4SgYRRQMdSq8tFViKKKGCU3iklf0RDzd+wzp4gezOxe3m0PLB7XKwvVrP1hRjUh49zIAL9JBpYREPS1EMw=="
+    },
+    "@pixi/polyfill": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/polyfill/-/polyfill-5.1.0.tgz",
+      "integrity": "sha512-8M3nYCO0a599fsdLW7wv9SBYriMqS1QckKAkRuN2JualRuK/GjxZjm5Vcbcwc1gGONRUKZroH12CuPyTcU2HnQ==",
+      "requires": {
+        "es6-promise-polyfill": "^1.2.0",
+        "object-assign": "^4.1.1"
+      }
+    },
     "@types/estree": {
       "version": "0.0.39",
       "resolved": "https://registry.npmjs.org/@types/estree/-/estree-0.0.39.tgz",
       "integrity": "sha512-EYNwp3bU+98cpU4lAWYYL7Zz+2gryWH1qbdDTidVd6hkiR6weksdbMadyXKXNPEkQFhXM+hVO9ZygomHXp+AIw=="
     },
     "@types/node": {
-      "version": "12.0.7",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-12.0.7.tgz",
-      "integrity": "sha512-1YKeT4JitGgE4SOzyB9eMwO0nGVNkNEsm9qlIt1Lqm/tG2QEiSMTD4kS3aO6L+w5SClLVxALmIBESK6Mk5wX0A==",
-      "dev": true
+      "version": "12.6.8",
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-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.11.0.tgz",
-      "integrity": "sha512-WL2pBDjqT6pGUNSUzMw00o4T7If+z4H2x3Gz893WoUQ5KW8Vr9txp00ykiP16VBaZF5+j/OcXJHZ9+PCvdiDKw==",
+      "version": "1.11.1",
+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.11.1.tgz",
+      "integrity": "sha512-vIpgF6wfuJOZI7KKKSP+HmiKggadPQAdsp5HiC1mvqnfp0gF1vdwgBWZIdrVft9pgqoMFQN+R7BSWZiBxx+BBw==",
       "dev": true,
       "requires": {
         "path-parse": "^1.0.6"
@@ -4712,6 +5181,15 @@
       "integrity": "sha1-LGN/53yJOv0qZj/iGqkIAGjiBSo=",
       "dev": true
     },
+    "resource-loader": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/resource-loader/-/resource-loader-3.0.1.tgz",
+      "integrity": "sha512-fBuCRbEHdLCI1eglzQhUv9Rrdcmqkydr1r6uHE2cYHvRBrcLXeSmbE/qI/urFt8rPr/IGxir3BUwM5kUK8XoyA==",
+      "requires": {
+        "mini-signals": "^1.2.0",
+        "parse-uri": "^1.0.0"
+      }
+    },
     "ret": {
       "version": "0.1.15",
       "resolved": "https://registry.npmjs.org/ret/-/ret-0.1.15.tgz",
@@ -4729,33 +5207,26 @@
       }
     },
     "rollup": {
-      "version": "1.15.6",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.15.6.tgz",
-      "integrity": "sha512-s3Vn3QJQ5YVFfIG4nXoG9VdL1I37IZsft+4ZyeBhxE0df1kCFz9e+4bEAbR4mKH3pvBO9e9xjdxWPhhIp0r9ow==",
+      "version": "1.17.0",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.17.0.tgz",
+      "integrity": "sha512-k/j1m0NIsI4SYgCJR4MWPstGJOWfJyd6gycKoMhyoKPVXxm+L49XtbUwZyFsrSU2YXsOkM4u1ll9CS/ZgJBUpw==",
       "requires": {
         "@types/estree": "0.0.39",
-        "@types/node": "^12.0.8",
-        "acorn": "^6.1.1"
-      },
-      "dependencies": {
-        "@types/node": {
-          "version": "12.0.8",
-          "resolved": "https://registry.npmjs.org/@types/node/-/node-12.0.8.tgz",
-          "integrity": "sha512-b8bbUOTwzIY3V5vDTY1fIJ+ePKDUBqt2hC2woVGotdQQhG/2Sh62HOKHrT7ab+VerXAcPyAiTEipPu/FsreUtg=="
-        }
+        "@types/node": "^12.6.2",
+        "acorn": "^6.2.0"
       }
     },
     "rollup-plugin-commonjs": {
-      "version": "10.0.0",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.0.tgz",
-      "integrity": "sha512-B8MoX5GRpj3kW4+YaFO/di2JsZkBxNjVmZ9LWjUoTAjq8N9wc7HObMXPsrvolVV9JXVtYSscflXM14A19dXPNQ==",
+      "version": "10.0.1",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.1.tgz",
+      "integrity": "sha512-x0PcCVdEc4J8igv1qe2vttz8JKAKcTs3wfIA3L8xEty3VzxgORLrzZrNWaVMc+pBC4U3aDOb9BnWLAQ8J11vkA==",
       "dev": true,
       "requires": {
-        "estree-walker": "^0.6.0",
+        "estree-walker": "^0.6.1",
         "is-reference": "^1.1.2",
         "magic-string": "^0.25.2",
-        "resolve": "^1.10.1",
-        "rollup-pluginutils": "^2.7.0"
+        "resolve": "^1.11.0",
+        "rollup-pluginutils": "^2.8.1"
       }
     },
     "rollup-plugin-node-builtins": {
@@ -4771,16 +5242,16 @@
       }
     },
     "rollup-plugin-node-resolve": {
-      "version": "5.0.3",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.0.3.tgz",
-      "integrity": "sha512-Mhhmf0x493xgUPEsRELnU1VM+4+WO82knWkAbZ0d2DvZQZJMbhzyQK/hqtpVscoRru1EqlK3TM1kK9ro469wPw==",
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.2.0.tgz",
+      "integrity": "sha512-jUlyaDXts7TW2CqQ4GaO5VJ4PwwaV8VUGA7+km3n6k6xtOEacf61u0VXwN80phY/evMcaS+9eIeJ9MOyDxt5Zw==",
       "dev": true,
       "requires": {
         "@types/resolve": "0.0.8",
         "builtin-modules": "^3.1.0",
         "is-module": "^1.0.0",
-        "resolve": "^1.11.0",
-        "rollup-pluginutils": "^2.8.0"
+        "resolve": "^1.11.1",
+        "rollup-pluginutils": "^2.8.1"
       }
     },
     "rollup-plugin-typescript2": {
@@ -4846,35 +5317,6 @@
       "integrity": "sha1-uYSPJdbPNjMwc+ye+IVtQvEjPlI=",
       "dev": true
     },
-    "send": {
-      "version": "0.17.1",
-      "resolved": "https://registry.npmjs.org/send/-/send-0.17.1.tgz",
-      "integrity": "sha512-BsVKsiGcQMFwT8UxypobUKyv7irCNRHk1T0G680vk88yf6LBByGcZJOTJCrTP2xVN6yI+XjPJcNuE3V4fT9sAg==",
-      "dev": true,
-      "requires": {
-        "debug": "2.6.9",
-        "depd": "~1.1.2",
-        "destroy": "~1.0.4",
-        "encodeurl": "~1.0.2",
-        "escape-html": "~1.0.3",
-        "etag": "~1.8.1",
-        "fresh": "0.5.2",
-        "http-errors": "~1.7.2",
-        "mime": "1.6.0",
-        "ms": "2.1.1",
-        "on-finished": "~2.3.0",
-        "range-parser": "~1.2.1",
-        "statuses": "~1.5.0"
-      },
-      "dependencies": {
-        "ms": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
-          "dev": true
-        }
-      }
-    },
     "serve-index": {
       "version": "1.9.1",
       "resolved": "https://registry.npmjs.org/serve-index/-/serve-index-1.9.1.tgz",
@@ -4902,6 +5344,12 @@
             "statuses": ">= 1.4.0 < 2"
           }
         },
+        "inherits": {
+          "version": "2.0.3",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+          "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+          "dev": true
+        },
         "setprototypeof": {
           "version": "1.1.0",
           "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
@@ -4911,9 +5359,9 @@
       }
     },
     "set-value": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.0.tgz",
-      "integrity": "sha512-hw0yxk9GT/Hr5yJEYnHNKYXkIA8mVJgd9ditYZCe16ZczcaELYYcfvaXesNACk2O8O0nTiPQcQhGUQj8JLzeeg==",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.1.tgz",
+      "integrity": "sha512-JxHc1weCN68wRY0fhCoXpyK55m/XPHafOmK4UWD7m2CI14GMcFypt4w/0+NV5f/ZMby2F6S2wwA7fgynh9gWSw==",
       "dev": true,
       "requires": {
         "extend-shallow": "^2.0.1",
@@ -5082,9 +5530,9 @@
       "dev": true
     },
     "sourcemap-codec": {
-      "version": "1.4.4",
-      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.4.tgz",
-      "integrity": "sha512-CYAPYdBu34781kLHkaW3m6b/uUSyMOC2R61gcYMWooeuaGtjof86ZA/8T+qVPPt7np1085CR9hmMGrySwEc8Xg==",
+      "version": "1.4.6",
+      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.6.tgz",
+      "integrity": "sha512-1ZooVLYFxC448piVLBbtOxFcXwnymH9oUF8nRd3CuYDVvkRBxRl6pB4Mtas5a4drtL+E8LDgFkQNcgIw6tc8Hg==",
       "dev": true
     },
     "split": {
@@ -5148,10 +5596,13 @@
       "dev": true
     },
     "string_decoder": {
-      "version": "0.10.31",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
-      "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
-      "dev": true
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "~5.1.0"
+      }
     },
     "systemjs": {
       "version": "0.21.6",
@@ -5231,44 +5682,21 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.5.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.2.tgz",
-      "integrity": "sha512-7KxJovlYhTX5RaRbUdkAXN1KUZ8PwWlTzQdHV6xNqvuFOs7+WBo10TQUqT19Q/Jz2hk5v9TQDIhyLhhJY4p5AA==",
+      "version": "3.5.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.3.tgz",
+      "integrity": "sha512-ACzBtm/PhXBDId6a6sDJfroT2pOWt/oOnk4/dElG5G33ZL776N3Y6/6bKZJBFpd+b05F3Ct9qDjMeJmRWtE2/g==",
       "dev": true
     },
     "union-value": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz",
-      "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",
+      "integrity": "sha512-tJfXmxMeWYnczCVs7XAEvIV7ieppALdyepWMkHkwciRpZraG/xwT+s2JN8+pr1+8jCRf80FFzvr+MpQeeoF4Xg==",
       "dev": true,
       "requires": {
         "arr-union": "^3.1.0",
         "get-value": "^2.0.6",
         "is-extendable": "^0.1.1",
-        "set-value": "^0.4.3"
-      },
-      "dependencies": {
-        "extend-shallow": {
-          "version": "2.0.1",
-          "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
-          "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
-          "dev": true,
-          "requires": {
-            "is-extendable": "^0.1.0"
-          }
-        },
-        "set-value": {
-          "version": "0.4.3",
-          "resolved": "https://registry.npmjs.org/set-value/-/set-value-0.4.3.tgz",
-          "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=",
-          "dev": true,
-          "requires": {
-            "extend-shallow": "^2.0.1",
-            "is-extendable": "^0.1.1",
-            "is-plain-object": "^2.0.1",
-            "to-object-path": "^0.3.0"
-          }
-        }
+        "set-value": "^2.0.1"
       }
     },
     "universalify": {
@@ -5341,6 +5769,15 @@
       "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
       "dev": true
     },
+    "url": {
+      "version": "0.11.0",
+      "resolved": "https://registry.npmjs.org/url/-/url-0.11.0.tgz",
+      "integrity": "sha1-ODjpfPxgUh63PFJajlW/3Z4uKPE=",
+      "requires": {
+        "punycode": "1.3.2",
+        "querystring": "0.2.0"
+      }
+    },
     "use": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
@@ -5372,12 +5809,13 @@
       "dev": true
     },
     "websocket-driver": {
-      "version": "0.7.0",
-      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.0.tgz",
-      "integrity": "sha1-DK+dLXVdk67gSdS90NP+LMoqJOs=",
+      "version": "0.7.3",
+      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.3.tgz",
+      "integrity": "sha512-bpxWlvbbB459Mlipc5GBzzZwhoZgGEZLuqPaR0INBGnPAY1vdBX6hPnoFXiw+3yWxDuHyQjO2oXTMyS8A5haFg==",
       "dev": true,
       "requires": {
-        "http-parser-js": ">=0.4.0",
+        "http-parser-js": ">=0.4.0 <0.4.11",
+        "safe-buffer": ">=5.1.0",
         "websocket-extensions": ">=0.1.1"
       }
     },
diff --git a/package.json b/package.json
index 07cf1ea..8aafc46 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,9 @@
     "build": "tsc",
     "rollup": "rollup -c",
     "watch": "npx live-server --open=index.html --watch='./*.html,./*.js'",
-    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./*.js'"
+    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./src/*.js'",
+    "pixi": "cd pixi.js && npm run local && cd .. && npm run pixi:install",
+    "pixi:install": "rm -rf node_modules/pixi.js && rm package-lock.json"
   },
   "repository": {
     "type": "git",
@@ -17,13 +19,15 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@types/systemjs": "^0.20.6",
+    "@types/webgl2": "0.0.5",
     "imgui-js": "file:./imgui-js",
+    "pixi.js": "file:pixi.js/bundles/pixi.js/pixi.js-5.1.4.tgz",
     "rollup": "^1.15.6",
     "systemjs": "^0.21.5"
   },
   "devDependencies": {
     "@types/node": "^12.0.0",
+    "@types/systemjs": "^0.20.6",
     "live-server": "^1.2.1",
     "rollup-plugin-commonjs": "^10.0.0",
     "rollup-plugin-node-builtins": "^2.1.2",
diff --git a/pixi.js b/pixi.js
new file mode 160000
index 0000000..1b78731
--- /dev/null
+++ b/pixi.js
@@ -0,0 +1 @@
+Subproject commit 1b78731948b57c635a2e65444c387eed31ec7428
diff --git a/session b/session
index bbf5582..06b9a8d 100644
--- a/session
+++ b/session
@@ -1,322 +1,62 @@
 let SessionLoad = 1
 if &cp | set nocp | endif
-let s:cpo_save=&cpo
-set cpo&vim
-imap <Nul> <C-Space>
-inoremap <expr> <Up> pumvisible() ? "\" : "\<Up>"
-inoremap <expr> <S-Tab> pumvisible() ? "\" : "\<S-Tab>"
-inoremap <expr> <Down> pumvisible() ? "\" : "\<Down>"
-nnoremap <silent>  :TmuxNavigateLeft
-nnoremap <silent> <NL> :TmuxNavigateDown
-nnoremap <silent>  :TmuxNavigateUp
-nnoremap <silent>  :TmuxNavigateRight
-nnoremap <silent>  :TmuxNavigatePrevious
-nnoremap \d :YcmShowDetailedDiagnostic
-vnoremap <silent> \c :call CopyMarkWithCursor("<", ">")
-nnoremap <silent> \c :set opfunc=OpSysCopyMarkg@
-vmap gx <Plug>NetrwBrowseXVis
-nmap gx <Plug>NetrwBrowseX
-vnoremap <silent> <Plug>NetrwBrowseXVis :call netrw#BrowseXVis()
-nnoremap <silent> <Plug>NetrwBrowseX :call netrw#BrowseX(expand((exists("g:netrw_gx")? g:netrw_gx : '<cfile>')),netrw#CheckIfRemote())
-inoremap <expr> 	 pumvisible() ? "\" : "\	"
-let &cpo=s:cpo_save
-unlet s:cpo_save
-set autoindent
-set backspace=indent,eol,start
-set completefunc=youcompleteme#CompleteFunc
-set completeopt=preview,menuone
-set cpoptions=aAceFsB
-set fileencodings=ucs-bom,utf-8,default,latin1
-set fillchars=vert:|,fold:-,vert:│
-set helplang=en
-set hidden
-set include=import_s.\\zs[^'\"]*\\ze
-set includeexpr=TsIncludeExpr(v:fname)
-set nomodeline
-set path=.,/usr/include,,,./node_modules/**,node_modules/**
-set ruler
-set runtimepath=~/.vim,~/.vim/bundle/JustDo,~/.vim/bundle/YouCompleteMe,~/.vim/bundle/vim-easymotion,~/.vim/bundle/vim-tmux-navigator,~/.vim/bundle/yats.vim,/var/lib/vim/addons,/usr/share/vim/vimfiles,/usr/share/vim/vim74,/usr/share/vim/vimfiles/after,/var/lib/vim/addons/after,~/.vim/after
-set sessionoptions=blank,buffers,folds,help,options,tabpages,winsize,sesdir
-set shortmess=filnxtToOc
-set suffixes=.bak,~,.swp,.o,.info,.aux,.log,.dvi,.bbl,.blg,.brf,.cb,.ind,.idx,.ilg,.inx,.out,.toc
-set suffixesadd=.ts
 let s:so_save = &so | let s:siso_save = &siso | set so=0 siso=0
 let v:this_session=expand("<sfile>:p")
 silent only
+silent tabonly
 exe "cd " . escape(expand("<sfile>:p:h"), ' ')
 if expand('%') == '' && !&modified && line('$') <= 1 && getline(1) == ''
   let s:wipebuf = bufnr('%')
 endif
 set shortmess=aoO
+argglobal
+%argdel
+edit src/imgui_impl.ts
+set splitbelow splitright
+set nosplitbelow
+set nosplitright
+wincmd t
+set winminheight=0
+set winheight=1
+set winminwidth=0
+set winwidth=1
+argglobal
+let s:l = 1 - ((0 * winheight(0) + 21) / 42)
+if s:l < 1 | let s:l = 1 | endif
+exe s:l
+normal! zt
+1
+normal! 0
+tabnext 1
+badd +0 src/imgui_impl.ts
 badd +12 rollup.config.js
 badd +7 imgui-js/rollup.config.js
-badd +7 imgui-js/tsconfig.json
-badd +26 tsconfig.json
+badd +4 imgui-js/tsconfig.json
+badd +12 tsconfig.json
 badd +1 index.js
 badd +3904 imgui-js/imgui.ts
-badd +39 src/main.ts
+badd +80 src/main.ts
 badd +52 imgui-js/example/main.ts
-badd +8 package.json
+badd +34 package.json
 badd +1 imgui-js/dist/imgui.d.ts
 badd +1 imgui-js/bind-imgui.js
 badd +1 imgui-js/example/imgui_impl.js
 badd +2 imgui-js/example/imgui_impl.ts
 badd +295 imgui-js/imgui_demo.ts
 badd +4 index.html
-badd +14 indexdev.html
+badd +4 indexdev.html
 badd +6 imgui-js/example/index.html
-badd +2 imgui-js/example/system.config.js
+badd +6 imgui-js/example/system.config.js
 badd +40 imgui-js/package.json
-badd +201 node_modules/systemjs/dist/system.js
-argglobal
-silent! argdel *
-edit package.json
-set splitbelow splitright
-wincmd _ | wincmd |
-split
-1wincmd k
-wincmd w
-set nosplitbelow
-set nosplitright
-wincmd t
-set winheight=1 winwidth=1
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-argglobal
-enew
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=wipe
-setlocal buflisted
-setlocal buftype=nofile
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=s1:/*,mb:*,ex:*/,://,b:#,:%,:XCOMM,n:>,fb:-
-setlocal commentstring=/*%s*/
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != ''
-setlocal filetype=
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=tcq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=
-setlocal indentkeys=0{,0},:,0#,!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal nomodifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal previewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal noswapfile
-setlocal synmaxcol=3000
-if &syntax != ''
-setlocal syntax=
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal winfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-wincmd w
-argglobal
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=
-setlocal buflisted
-setlocal buftype=
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=
-setlocal commentstring=
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != 'json'
-setlocal filetype=json
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=cq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=GetJSONIndent()
-setlocal indentkeys=0{,0},0),0[,0],!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal modifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal nopreviewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal swapfile
-setlocal synmaxcol=3000
-if &syntax != 'json'
-setlocal syntax=json
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal nowinfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-silent! normal! zE
-let s:l = 23 - ((19 * winheight(0) + 15) / 31)
-if s:l < 1 | let s:l = 1 | endif
-exe s:l
-normal! zt
-23
-normal! 024|
-wincmd w
-2wincmd w
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-tabnext 1
-if exists('s:wipebuf')
+badd +1 node_modules/systemjs/dist/system.js
+badd +1 src/main.js
+badd +1 imgui-js/example/main.js
+if exists('s:wipebuf') && len(win_findbuf(s:wipebuf)) == 0
   silent exe 'bwipe ' . s:wipebuf
 endif
 unlet! s:wipebuf
 set winheight=1 winwidth=20 shortmess=filnxtToOc
+set winminheight=1 winminwidth=1
 let s:sx = expand("<sfile>:p:r")."x.vim"
 if file_readable(s:sx)
   exe "source " . fnameescape(s:sx)
diff --git a/src/imgui_impl.js b/src/imgui_impl.js
new file mode 100644
index 0000000..416e4b2
--- /dev/null
+++ b/src/imgui_impl.js
@@ -0,0 +1,736 @@
+System.register(["imgui-js", "pixi.js", "./utils"], function (exports_1, context_1) {
+    "use strict";
+    var ImGui, PIXI, U, clipboard_text, contexts, contextIOs, isFirstWindow, ImGuiImplInternalRenderer, gl, app, ImGuiWindowLayer, ImGuiWindow, canvas, g_ShaderHandle, g_VertHandle, g_FragHandle, g_AttribLocationTex, g_AttribLocationProjMtx, g_AttribLocationPosition, g_AttribLocationUV, g_AttribLocationColor, g_VaoHandle, g_VboHandle, g_ElementsHandle, g_FontTexture, mouse_button_map;
+    var __moduleName = context_1 && context_1.id;
+    function document_on_copy(event) {
+        if (event.clipboardData) {
+            event.clipboardData.setData("text/plain", clipboard_text);
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function document_on_cut(event) {
+        if (event.clipboardData) {
+            event.clipboardData.setData("text/plain", clipboard_text);
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function document_on_paste(event) {
+        if (event.clipboardData) {
+            clipboard_text = event.clipboardData.getData("text/plain");
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function window_on_gamepadconnected(event /* GamepadEvent */) {
+        console.log("Gamepad connected at index %d: %s. %d buttons, %d axes.", event.gamepad.index, event.gamepad.id, event.gamepad.buttons.length, event.gamepad.axes.length);
+    }
+    function window_on_gamepaddisconnected(event /* GamepadEvent */) {
+        console.log("Gamepad disconnected at index %d: %s.", event.gamepad.index, event.gamepad.id);
+    }
+    function canvas_on_blur(event) {
+        for (var io of contextIOs) {
+            io.KeyCtrl = false;
+            io.KeyShift = false;
+            io.KeyAlt = false;
+            io.KeySuper = false;
+            for (let i = 0; i < io.KeysDown.length; ++i) {
+                io.KeysDown[i] = false;
+            }
+            for (let i = 0; i < io.MouseDown.length; ++i) {
+                io.MouseDown[i] = false;
+            }
+        }
+    }
+    function canvas_on_keydown(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.KeyCtrl = event.ctrlKey;
+            io.KeyShift = event.shiftKey;
+            io.KeyAlt = event.altKey;
+            io.KeySuper = event.metaKey;
+            ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+            io.KeysDown[event.keyCode] = true;
+            // forward to the keypress event
+            if ( /*io.WantCaptureKeyboard ||*/event.key === "Tab") {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_keyup(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.KeyCtrl = event.ctrlKey;
+            io.KeyShift = event.shiftKey;
+            io.KeyAlt = event.altKey;
+            io.KeySuper = event.metaKey;
+            ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+            io.KeysDown[event.keyCode] = false;
+            if (io.WantCaptureKeyboard) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_keypress(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.AddInputCharacter(event.charCode);
+            if (io.WantCaptureKeyboard) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_contextmenu(event) {
+        for (var io of contextIOs) {
+            if (io.WantCaptureMouse) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_wheel(event) {
+        for (var io of contextIOs) {
+            let scale = 1.0;
+            switch (event.deltaMode) {
+                case event.DOM_DELTA_PIXEL:
+                    scale = 0.01;
+                    break;
+                case event.DOM_DELTA_LINE:
+                    scale = 0.2;
+                    break;
+                case event.DOM_DELTA_PAGE:
+                    scale = 1.0;
+                    break;
+            }
+            io.MouseWheelH = event.deltaX * scale;
+            io.MouseWheel = -event.deltaY * scale; // Mouse wheel: 1 unit scrolls about 5 lines text.
+            if (io.WantCaptureMouse) {
+                event.preventDefault();
+            }
+        }
+    }
+    function PrePIXIInit() {
+        PIXI.Renderer.registerPlugin("imgui_renderer", U.fromConstructor(ImGuiImplInternalRenderer));
+    }
+    exports_1("PrePIXIInit", PrePIXIInit);
+    function Init(_app) {
+        // Setup Dear ImGui binding
+        ImGui.IMGUI_CHECKVERSION();
+        if (typeof (document) !== "undefined") {
+            document.body.addEventListener("copy", document_on_copy);
+            document.body.addEventListener("cut", document_on_cut);
+            document.body.addEventListener("paste", document_on_paste);
+        }
+        if (typeof (window) !== "undefined") {
+            window.addEventListener("gamepadconnected", window_on_gamepadconnected);
+            window.addEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+        }
+        app = _app;
+        gl = app.renderer.gl;
+        canvas = app.view;
+        gl.getExtension("EXT_color_buffer_float");
+        if (canvas !== null) {
+            canvas.style.touchAction = "none"; // Disable browser handling of all panning and zooming gestures.
+            canvas.addEventListener("blur", canvas_on_blur);
+            canvas.addEventListener("keydown", canvas_on_keydown);
+            canvas.addEventListener("keyup", canvas_on_keyup);
+            canvas.addEventListener("keypress", canvas_on_keypress);
+            canvas.addEventListener("contextmenu", canvas_on_contextmenu);
+            canvas.addEventListener("wheel", canvas_on_wheel);
+        }
+        CreateDeviceObjects();
+    }
+    exports_1("Init", Init);
+    function Shutdown() {
+        DestroyDeviceObjects();
+        if (canvas !== null) {
+            canvas.removeEventListener("blur", canvas_on_blur);
+            canvas.removeEventListener("keydown", canvas_on_keydown);
+            canvas.removeEventListener("keyup", canvas_on_keyup);
+            canvas.removeEventListener("keypress", canvas_on_keypress);
+            canvas.removeEventListener("contextmenu", canvas_on_contextmenu);
+            canvas.removeEventListener("wheel", canvas_on_wheel);
+        }
+        app = null;
+        canvas = null;
+        if (typeof (window) !== "undefined") {
+            window.removeEventListener("gamepadconnected", window_on_gamepadconnected);
+            window.removeEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+        }
+        if (typeof (document) !== "undefined") {
+            document.body.removeEventListener("copy", document_on_copy);
+            document.body.removeEventListener("cut", document_on_cut);
+            document.body.removeEventListener("paste", document_on_paste);
+        }
+    }
+    exports_1("Shutdown", Shutdown);
+    function CreateFontsTexture() {
+        const io = ImGui.GetIO();
+        // Backup GL state
+        const last_texture = gl && gl.getParameter(gl.TEXTURE_BINDING_2D);
+        // Build texture atlas
+        // const width: number = 256;
+        // const height: number = 256;
+        // const pixels: Uint8Array = new Uint8Array(4 * width * height).fill(0xff);
+        const { width, height, pixels } = io.Fonts.GetTexDataAsRGBA32(); // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+        // console.log(`font texture ${width} x ${height} @ ${pixels.length}`);
+        // Upload texture to graphics system
+        g_FontTexture = gl && gl.createTexture();
+        gl && gl.bindTexture(gl.TEXTURE_2D, g_FontTexture);
+        gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+        gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+        // gl && gl.pixelStorei(gl.UNPACK_ROW_LENGTH); // WebGL2
+        gl && gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+        // Store our identifier
+        io.Fonts.TexID = g_FontTexture || { foo: "bar" };
+        // console.log("font texture id", g_FontTexture);
+        // Restore modified GL state
+        gl && last_texture && gl.bindTexture(gl.TEXTURE_2D, last_texture);
+    }
+    function DestroyFontsTexture() {
+        const io = ImGui.GetIO();
+        io.Fonts.TexID = null;
+        gl && gl.deleteTexture(g_FontTexture);
+        g_FontTexture = null;
+    }
+    function CreateDeviceObjects() {
+        const vertex_shader = [
+            "#version 300 es",
+            "uniform mat4 ProjMtx;",
+            "in vec2 Position;",
+            "in vec2 UV;",
+            "in vec4 Color;",
+            "out vec2 Frag_UV;",
+            "out vec4 Frag_Color;",
+            "void main() {",
+            "	Frag_UV = UV;",
+            "	Frag_Color = Color;",
+            "	gl_Position = ProjMtx * vec4(Position.xy,0,1);",
+            "}",
+        ];
+        const fragment_shader = [
+            "#version 300 es",
+            "precision mediump float;",
+            "uniform sampler2D Texture;",
+            "in vec2 Frag_UV;",
+            "in vec4 Frag_Color;",
+            "out vec4 OutColor;",
+            "void main() {",
+            "	OutColor = Frag_Color * texture(Texture, Frag_UV);",
+            "}",
+        ];
+        g_ShaderHandle = gl && gl.createProgram();
+        g_VertHandle = gl && gl.createShader(gl.VERTEX_SHADER);
+        g_FragHandle = gl && gl.createShader(gl.FRAGMENT_SHADER);
+        gl && gl.shaderSource(g_VertHandle, vertex_shader.join("\n"));
+        gl && gl.shaderSource(g_FragHandle, fragment_shader.join("\n"));
+        gl && gl.compileShader(g_VertHandle);
+        gl && gl.compileShader(g_FragHandle);
+        gl && gl.attachShader(g_ShaderHandle, g_VertHandle);
+        gl && gl.attachShader(g_ShaderHandle, g_FragHandle);
+        gl && gl.linkProgram(g_ShaderHandle);
+        g_AttribLocationTex = gl && gl.getUniformLocation(g_ShaderHandle, "Texture");
+        g_AttribLocationProjMtx = gl && gl.getUniformLocation(g_ShaderHandle, "ProjMtx");
+        g_AttribLocationPosition = gl && gl.getAttribLocation(g_ShaderHandle, "Position") || 0;
+        g_AttribLocationUV = gl && gl.getAttribLocation(g_ShaderHandle, "UV") || 0;
+        g_AttribLocationColor = gl && gl.getAttribLocation(g_ShaderHandle, "Color") || 0;
+        g_VaoHandle = gl && gl.createVertexArray();
+        g_VboHandle = gl && gl.createBuffer();
+        g_ElementsHandle = gl && gl.createBuffer();
+    }
+    function DestroyDeviceObjects() {
+        DestroyFontsTexture();
+        gl && gl.deleteVertexArray(g_VaoHandle);
+        g_VaoHandle = null;
+        gl && gl.deleteBuffer(g_VboHandle);
+        g_VboHandle = null;
+        gl && gl.deleteBuffer(g_ElementsHandle);
+        g_ElementsHandle = null;
+        g_AttribLocationTex = null;
+        g_AttribLocationProjMtx = null;
+        g_AttribLocationPosition = -1;
+        g_AttribLocationUV = -1;
+        g_AttribLocationColor = -1;
+        gl && gl.deleteProgram(g_ShaderHandle);
+        g_ShaderHandle = null;
+        gl && gl.deleteShader(g_VertHandle);
+        g_VertHandle = null;
+        gl && gl.deleteShader(g_FragHandle);
+        g_FragHandle = null;
+    }
+    return {
+        setters: [
+            function (ImGui_1) {
+                ImGui = ImGui_1;
+            },
+            function (PIXI_1) {
+                PIXI = PIXI_1;
+            },
+            function (U_1) {
+                U = U_1;
+            }
+        ],
+        execute: function () {
+            clipboard_text = "";
+            contexts = [];
+            contextIOs = [];
+            isFirstWindow = true;
+            ImGuiImplInternalRenderer = class ImGuiImplInternalRenderer extends PIXI.ObjectRenderer {
+                constructor(r) {
+                    super(r);
+                }
+                render(owner) {
+                    if (!(owner instanceof ImGuiWindowLayer))
+                        return;
+                    const window = owner.window;
+                    const io = window.io;
+                    const draw_data = ImGui.GetDrawData();
+                    if (draw_data === null) {
+                        throw new Error();
+                    }
+                    gl || console.log(draw_data);
+                    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+                    const fb_width = io.DisplaySize.x * io.DisplayFramebufferScale.x;
+                    const fb_height = io.DisplaySize.y * io.DisplayFramebufferScale.y;
+                    if (fb_width === 0 || fb_height === 0) {
+                        return;
+                    }
+                    draw_data.ScaleClipRects(io.DisplayFramebufferScale);
+                    // Backup GL state
+                    const last_program = gl && gl.getParameter(gl.CURRENT_PROGRAM) || null;
+                    const last_active_texture = gl && gl.getParameter(gl.ACTIVE_TEXTURE) || null;
+                    gl && gl.activeTexture(gl.TEXTURE0);
+                    const last_texture0 = gl && gl.getParameter(gl.TEXTURE_BINDING_2D) || null;
+                    const last_vertex_array = gl && gl.getParameter(gl.VERTEX_ARRAY_BINDING) || null;
+                    const last_array_buffer = gl && gl.getParameter(gl.ARRAY_BUFFER_BINDING) || null;
+                    const last_element_array_buffer = gl && gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING) || null;
+                    // GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+                    const last_viewport = gl && gl.getParameter(gl.VIEWPORT) || null;
+                    const last_scissor_box = gl && gl.getParameter(gl.SCISSOR_BOX) || null;
+                    const last_blend_src_rgb = gl && gl.getParameter(gl.BLEND_SRC_RGB) || null;
+                    const last_blend_dst_rgb = gl && gl.getParameter(gl.BLEND_DST_RGB) || null;
+                    const last_blend_src_alpha = gl && gl.getParameter(gl.BLEND_SRC_ALPHA) || null;
+                    const last_blend_dst_alpha = gl && gl.getParameter(gl.BLEND_DST_ALPHA) || null;
+                    const last_blend_equation_rgb = gl && gl.getParameter(gl.BLEND_EQUATION_RGB) || null;
+                    const last_blend_equation_alpha = gl && gl.getParameter(gl.BLEND_EQUATION_ALPHA) || null;
+                    const last_enable_blend = gl && gl.getParameter(gl.BLEND) || null;
+                    const last_enable_cull_face = gl && gl.getParameter(gl.CULL_FACE) || null;
+                    const last_enable_depth_test = gl && gl.getParameter(gl.DEPTH_TEST) || null;
+                    const last_enable_scissor_test = gl && gl.getParameter(gl.SCISSOR_TEST) || null;
+                    gl.clearColor(0, 0, 0, 0);
+                    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+                    gl && gl.bindVertexArray(g_VaoHandle);
+                    // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
+                    gl && gl.enable(gl.BLEND);
+                    gl && gl.blendEquation(gl.FUNC_ADD);
+                    gl && gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE);
+                    gl && gl.disable(gl.CULL_FACE);
+                    gl && gl.disable(gl.DEPTH_TEST);
+                    gl && gl.enable(gl.SCISSOR_TEST);
+                    // glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+                    // Setup viewport, orthographic projection matrix
+                    // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+                    gl && gl.viewport(0, 0, fb_width, fb_height);
+                    const L = draw_data.DisplayPos.x;
+                    const R = draw_data.DisplayPos.x + draw_data.DisplaySize.x;
+                    const T = draw_data.DisplayPos.y;
+                    const B = draw_data.DisplayPos.y + draw_data.DisplaySize.y;
+                    // we actually flip the bottom and top here to match with PIXI's texture usage
+                    const ortho_projection = new Float32Array([
+                        2.0 / (R - L), 0.0, 0.0, 0.0,
+                        0.0, 2.0 / (B - T), 0.0, 0.0,
+                        0.0, 0.0, -1.0, 0.0,
+                        (R + L) / (L - R), (B + T) / (T - B), 0.0, 1.0,
+                    ]);
+                    gl && gl.useProgram(g_ShaderHandle);
+                    gl && gl.uniform1i(g_AttribLocationTex, 0);
+                    gl && g_AttribLocationProjMtx && gl.uniformMatrix4fv(g_AttribLocationProjMtx, false, ortho_projection);
+                    // Render command lists
+                    gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationPosition);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationUV);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationColor);
+                    gl && gl.vertexAttribPointer(g_AttribLocationPosition, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertPosOffset);
+                    gl && gl.vertexAttribPointer(g_AttribLocationUV, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertUVOffset);
+                    gl && gl.vertexAttribPointer(g_AttribLocationColor, 4, gl.UNSIGNED_BYTE, true, ImGui.ImDrawVertSize, ImGui.ImDrawVertColOffset);
+                    // Draw
+                    const pos = draw_data.DisplayPos;
+                    const idx_buffer_type = gl && ((ImGui.ImDrawIdxSize === 4) ? gl.UNSIGNED_INT : gl.UNSIGNED_SHORT) || 0;
+                    draw_data.IterateDrawLists((draw_list) => {
+                        gl || console.log(draw_list);
+                        gl || console.log("VtxBuffer.length", draw_list.VtxBuffer.length);
+                        gl || console.log("IdxBuffer.length", draw_list.IdxBuffer.length);
+                        let idx_buffer_offset = 0;
+                        gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+                        gl && gl.bufferData(gl.ARRAY_BUFFER, draw_list.VtxBuffer, gl.STREAM_DRAW);
+                        gl && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+                        gl && gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, draw_list.IdxBuffer, gl.STREAM_DRAW);
+                        draw_list.IterateDrawCmds((draw_cmd) => {
+                            gl || console.log(draw_cmd);
+                            gl || console.log("ElemCount", draw_cmd.ElemCount);
+                            gl || console.log("ClipRect", draw_cmd.ClipRect.x, draw_cmd.ClipRect.y, draw_cmd.ClipRect.z - draw_cmd.ClipRect.x, draw_cmd.ClipRect.w - draw_cmd.ClipRect.y);
+                            gl || console.log("TextureId", draw_cmd.TextureId);
+                            if (!gl) {
+                                console.log("i: pos.x pos.y uv.x uv.y col");
+                                for (let i = 0; i < Math.min(3, draw_cmd.ElemCount); ++i) {
+                                    const view = new ImGui.ImDrawVert(draw_list.VtxBuffer.buffer, draw_list.VtxBuffer.byteOffset + i * ImGui.ImDrawVertSize);
+                                    console.log(`${i}: ${view.pos[0].toFixed(2)} ${view.pos[1].toFixed(2)} ${view.uv[0].toFixed(5)} ${view.uv[1].toFixed(5)} ${("00000000" + view.col[0].toString(16)).substr(-8)}`);
+                                }
+                            }
+                            if (draw_cmd.UserCallback !== null) {
+                                // User callback (registered via ImDrawList::AddCallback)
+                                draw_cmd.UserCallback(draw_list, draw_cmd);
+                            }
+                            else {
+                                const clip_rect = new ImGui.ImVec4(draw_cmd.ClipRect.x - pos.x, draw_cmd.ClipRect.y - pos.y, draw_cmd.ClipRect.z - pos.x, draw_cmd.ClipRect.w - pos.y);
+                                if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0 && clip_rect.w >= 0.0) {
+                                    // Apply scissor/clipping rectangle
+                                    gl && gl.scissor(clip_rect.x, clip_rect.y, clip_rect.z - clip_rect.x, clip_rect.w - clip_rect.y);
+                                    // Bind texture, Draw
+                                    gl && gl.bindTexture(gl.TEXTURE_2D, draw_cmd.TextureId);
+                                    gl && gl.drawElements(gl.TRIANGLES, draw_cmd.ElemCount, idx_buffer_type, idx_buffer_offset);
+                                }
+                            }
+                            idx_buffer_offset += draw_cmd.ElemCount * ImGui.ImDrawIdxSize;
+                        });
+                    });
+                    // Restore modified GL state
+                    gl && (last_program !== null) && gl.useProgram(last_program);
+                    gl && (last_texture0 !== null) && gl.bindTexture(gl.TEXTURE_2D, last_texture0);
+                    gl && (last_active_texture !== null) && gl.activeTexture(last_active_texture);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationPosition);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationUV);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationColor);
+                    gl && (last_vertex_array !== null) && gl.bindVertexArray(last_vertex_array);
+                    gl && (last_array_buffer !== null) && gl.bindBuffer(gl.ARRAY_BUFFER, last_array_buffer);
+                    gl && (last_element_array_buffer !== null) && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+                    gl && (last_viewport !== null) && gl.viewport(last_viewport[0], last_viewport[1], last_viewport[2], last_viewport[3]);
+                    gl && (last_scissor_box !== null) && gl.scissor(last_scissor_box[0], last_scissor_box[1], last_scissor_box[2], last_scissor_box[3]);
+                    gl && (last_blend_equation_rgb !== null && last_blend_equation_alpha !== null) && gl.blendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+                    gl && (last_blend_src_rgb !== null && last_blend_src_alpha !== null && last_blend_dst_rgb !== null && last_blend_dst_alpha !== null) && gl.blendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
+                    gl && (last_enable_blend ? gl.enable(gl.BLEND) : gl.disable(gl.BLEND));
+                    gl && (last_enable_cull_face ? gl.enable(gl.CULL_FACE) : gl.disable(gl.CULL_FACE));
+                    gl && (last_enable_depth_test ? gl.enable(gl.DEPTH_TEST) : gl.disable(gl.DEPTH_TEST));
+                    gl && (last_enable_scissor_test ? gl.enable(gl.SCISSOR_TEST) : gl.disable(gl.SCISSOR_TEST));
+                    // glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
+                }
+            };
+            gl = null;
+            app = null;
+            ImGuiWindowLayer = class ImGuiWindowLayer extends PIXI.Sprite {
+                constructor(window, tex) {
+                    super();
+                    this.pluginName = "imgui_renderer";
+                    this.window = window;
+                }
+            };
+            ImGuiWindow = class ImGuiWindow extends PIXI.Container {
+                constructor(sizeX, sizeY, update) {
+                    super();
+                    this.baseTex = new PIXI.BaseRenderTexture({ scaleMode: PIXI.SCALE_MODES.LINEAR, resolution: 1, type: PIXI.TYPES.FLOAT, format: PIXI.FORMATS.RGBA });
+                    this.tex = new PIXI.RenderTexture(this.baseTex);
+                    this.surface = new PIXI.Sprite(this.tex);
+                    this.imgui = new ImGuiWindowLayer(this, this.tex);
+                    this.ctx = ImGui.CreateContext(contextIOs.length == 0 ? null : contextIOs[0].Fonts);
+                    ImGui.SetCurrentContext(this.ctx);
+                    this.io = ImGui.GetIO();
+                    contexts.push(this.ctx);
+                    contextIOs.push(this.io);
+                    if (contexts.length == 1) {
+                        CreateFontsTexture();
+                    }
+                    if (typeof (window) !== "undefined") {
+                        ImGui.LoadIniSettingsFromMemory(window.localStorage.getItem("imgui.ini") || "");
+                    }
+                    if (typeof (navigator) !== "undefined") {
+                        this.io.ConfigMacOSXBehaviors = navigator.platform.match(/Mac/) !== null;
+                    }
+                    this.io.SetClipboardTextFn = (user_data, text) => {
+                        clipboard_text = text;
+                        // console.log(`set clipboard_text: "${clipboard_text}"`);
+                        if (typeof navigator !== "undefined" && typeof navigator.clipboard !== "undefined") {
+                            // console.log(`clipboard.writeText: "${clipboard_text}"`);
+                            navigator.clipboard.writeText(clipboard_text).then(() => {
+                                // console.log(`clipboard.writeText: "${clipboard_text}" done.`);
+                            });
+                        }
+                    };
+                    this.io.GetClipboardTextFn = (user_data) => {
+                        // if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+                        //     console.log(`clipboard.readText: "${clipboard_text}"`);
+                        //     (navigator as any).clipboard.readText().then((text: string): void => {
+                        //         clipboard_text = text;
+                        //         console.log(`clipboard.readText: "${clipboard_text}" done.`);
+                        //     });
+                        // }
+                        // console.log(`get clipboard_text: "${clipboard_text}"`);
+                        return clipboard_text;
+                    };
+                    this.io.ClipboardUserData = null;
+                    // Setup back-end capabilities flags
+                    this.io.BackendFlags |= ImGui.BackendFlags.HasMouseCursors; // We can honor GetMouseCursor() values (optional)
+                    // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+                    this.io.KeyMap[ImGui.Key.Tab] = 9;
+                    this.io.KeyMap[ImGui.Key.LeftArrow] = 37;
+                    this.io.KeyMap[ImGui.Key.RightArrow] = 39;
+                    this.io.KeyMap[ImGui.Key.UpArrow] = 38;
+                    this.io.KeyMap[ImGui.Key.DownArrow] = 40;
+                    this.io.KeyMap[ImGui.Key.PageUp] = 33;
+                    this.io.KeyMap[ImGui.Key.PageDown] = 34;
+                    this.io.KeyMap[ImGui.Key.Home] = 36;
+                    this.io.KeyMap[ImGui.Key.End] = 35;
+                    this.io.KeyMap[ImGui.Key.Insert] = 45;
+                    this.io.KeyMap[ImGui.Key.Delete] = 46;
+                    this.io.KeyMap[ImGui.Key.Backspace] = 8;
+                    this.io.KeyMap[ImGui.Key.Space] = 32;
+                    this.io.KeyMap[ImGui.Key.Enter] = 13;
+                    this.io.KeyMap[ImGui.Key.Escape] = 27;
+                    this.io.KeyMap[ImGui.Key.A] = 65;
+                    this.io.KeyMap[ImGui.Key.C] = 67;
+                    this.io.KeyMap[ImGui.Key.V] = 86;
+                    this.io.KeyMap[ImGui.Key.X] = 88;
+                    this.io.KeyMap[ImGui.Key.Y] = 89;
+                    this.io.KeyMap[ImGui.Key.Z] = 90;
+                    this.update = update;
+                    this.resize(sizeX, sizeY);
+                    this.imgui.pluginName = 'imgui_renderer';
+                    this.addChild(this.surface);
+                    app.renderer.plugins.interaction.addListener("mousedown", this.mouseDown.bind(this));
+                    app.renderer.plugins.interaction.addListener("mouseup", this.mouseUp.bind(this));
+                    app.ticker.add(this.updateInternal.bind(this));
+                    this.interactive = false;
+                    this.interactiveChildren = true;
+                    this.surface.interactive = false;
+                }
+                getSizeX() { return this.sizeX; }
+                getSizeY() { return this.sizeY; }
+                withContext(cb) {
+                    ImGui.SetCurrentContext(this.ctx);
+                    cb();
+                }
+                mouseDown(e) {
+                    if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface) {
+                        this.io.MouseDown[mouse_button_map[0]] = true;
+                    }
+                }
+                mouseUp(e) {
+                    if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface) {
+                        this.io.MouseDown[mouse_button_map[0]] = false;
+                    }
+                }
+                resize(sizeX, sizeY) {
+                    this.sizeX = sizeX;
+                    this.sizeY = sizeY;
+                    this.baseTex.resize(sizeX, sizeY);
+                    this.tex.frame = new PIXI.Rectangle(0, 0, this.baseTex.width, this.baseTex.height);
+                }
+                updateInternal(deltaTime) {
+                    const dt = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+                    ImGui.SetCurrentContext(this.ctx);
+                    if (this.io.WantSaveIniSettings) {
+                        this.io.WantSaveIniSettings = false;
+                        if (typeof (window) !== "undefined") {
+                            window.localStorage.setItem("imgui.ini", ImGui.SaveIniSettingsToMemory());
+                        }
+                    }
+                    this.io.DisplaySize.x = this.sizeX;
+                    this.io.DisplaySize.y = this.sizeY;
+                    this.io.DisplayFramebufferScale.x = 1;
+                    this.io.DisplayFramebufferScale.y = 1;
+                    this.io.DeltaTime = dt;
+                    let localPos = this.toLocal(app.renderer.plugins.interaction.mouse.global);
+                    if (localPos.x < 0 || localPos.y < 0 || localPos.x >= this.sizeX || localPos.y >= this.sizeY) {
+                        localPos = new PIXI.Point(-Number.MAX_VALUE, -Number.MAX_VALUE);
+                    }
+                    this.io.MousePos.x = localPos.x;
+                    this.io.MousePos.y = localPos.y;
+                    if (this.io.WantSetMousePos) {
+                        console.log("TODO: MousePos", this.io.MousePos.x, this.io.MousePos.y);
+                    }
+                    if (typeof (document) !== "undefined") {
+                        if (this.io.MouseDrawCursor) {
+                            document.body.style.cursor = "none";
+                        }
+                        else {
+                            switch (ImGui.GetMouseCursor()) {
+                                case ImGui.MouseCursor.None:
+                                    document.body.style.cursor = "none";
+                                    break;
+                                default:
+                                case ImGui.MouseCursor.Arrow:
+                                    document.body.style.cursor = "default";
+                                    break;
+                                case ImGui.MouseCursor.TextInput:
+                                    document.body.style.cursor = "text";
+                                    break; // When hovering over InputText, etc.
+                                case ImGui.MouseCursor.ResizeAll:
+                                    document.body.style.cursor = "move";
+                                    break; // Unused
+                                case ImGui.MouseCursor.ResizeNS:
+                                    document.body.style.cursor = "ns-resize";
+                                    break; // When hovering over an horizontal border
+                                case ImGui.MouseCursor.ResizeEW:
+                                    document.body.style.cursor = "ew-resize";
+                                    break; // When hovering over a vertical border or a column
+                                case ImGui.MouseCursor.ResizeNESW:
+                                    document.body.style.cursor = "nesw-resize";
+                                    break; // When hovering over the bottom-left corner of a window
+                                case ImGui.MouseCursor.ResizeNWSE:
+                                    document.body.style.cursor = "nwse-resize";
+                                    break; // When hovering over the bottom-right corner of a window
+                                case ImGui.MouseCursor.Hand:
+                                    document.body.style.cursor = "move";
+                                    break;
+                            }
+                        }
+                    }
+                    // Gamepad navigation mapping [BETA]
+                    for (let i = 0; i < this.io.NavInputs.length; ++i) {
+                        this.io.NavInputs[i] = 0.0;
+                    }
+                    if (this.io.ConfigFlags & ImGui.ConfigFlags.NavEnableGamepad) {
+                        // Update gamepad inputs
+                        const gamepads = (typeof (navigator) !== "undefined" && typeof (navigator.getGamepads) === "function") ? navigator.getGamepads() : [];
+                        for (let i = 0; i < gamepads.length; ++i) {
+                            const gamepad = gamepads[i];
+                            if (!gamepad) {
+                                continue;
+                            }
+                            const buttons_count = gamepad.buttons.length;
+                            const axes_count = gamepad.axes.length;
+                            const MAP_BUTTON = function (NAV_NO, BUTTON_NO) {
+                                if (!gamepad) {
+                                    return;
+                                }
+                                if (buttons_count > BUTTON_NO && gamepad.buttons[BUTTON_NO].pressed)
+                                    this.io.NavInputs[NAV_NO] = 1.0;
+                            };
+                            const MAP_ANALOG = function (NAV_NO, AXIS_NO, V0, V1) {
+                                if (!gamepad) {
+                                    return;
+                                }
+                                let v = (axes_count > AXIS_NO) ? gamepad.axes[AXIS_NO] : V0;
+                                v = (v - V0) / (V1 - V0);
+                                if (v > 1.0)
+                                    v = 1.0;
+                                if (this.io.NavInputs[NAV_NO] < v)
+                                    this.io.NavInputs[NAV_NO] = v;
+                            };
+                            // TODO: map input based on vendor and product id
+                            // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/id
+                            const match = gamepad.id.match(/^([0-9a-f]{4})-([0-9a-f]{4})-.*$/);
+                            const match_chrome = gamepad.id.match(/^.*\(.*Vendor: ([0-9a-f]{4}) Product: ([0-9a-f]{4})\).*$/);
+                            const vendor = (match && match[1]) || (match_chrome && match_chrome[1]) || "0000";
+                            const product = (match && match[2]) || (match_chrome && match_chrome[2]) || "0000";
+                            switch (vendor + product) {
+                                case "046dc216": // Logitech Logitech Dual Action (Vendor: 046d Product: c216)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 1); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 2); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 0); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_ANALOG(ImGui.NavInput.DpadLeft, 4, -0.3, -0.9); // D-Pad Left
+                                    MAP_ANALOG(ImGui.NavInput.DpadRight, 4, +0.3, +0.9); // D-Pad Right
+                                    MAP_ANALOG(ImGui.NavInput.DpadUp, 5, -0.3, -0.9); // D-Pad Up
+                                    MAP_ANALOG(ImGui.NavInput.DpadDown, 5, +0.3, +0.9); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 6); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 7); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                case "046dc21d": // Logitech Gamepad F310 (STANDARD GAMEPAD Vendor: 046d Product: c21d)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 0); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 1); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 2); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_BUTTON(ImGui.NavInput.DpadLeft, 14); // D-Pad Left
+                                    MAP_BUTTON(ImGui.NavInput.DpadRight, 15); // D-Pad Right
+                                    MAP_BUTTON(ImGui.NavInput.DpadUp, 12); // D-Pad Up
+                                    MAP_BUTTON(ImGui.NavInput.DpadDown, 13); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_ANALOG(ImGui.NavInput.TweakSlow, 6, +0.3, +0.9); // L2 / LT
+                                    MAP_ANALOG(ImGui.NavInput.TweakFast, 7, +0.3, +0.9); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                case "2dc86001": // 8Bitdo SN30 Pro  8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6001)
+                                case "2dc86101": // 8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6101)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 1); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 0); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 4); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_ANALOG(ImGui.NavInput.DpadLeft, 6, -0.3, -0.9); // D-Pad Left
+                                    MAP_ANALOG(ImGui.NavInput.DpadRight, 6, +0.3, +0.9); // D-Pad Right
+                                    MAP_ANALOG(ImGui.NavInput.DpadUp, 7, -0.3, -0.9); // D-Pad Up
+                                    MAP_ANALOG(ImGui.NavInput.DpadDown, 7, +0.3, +0.9); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 6); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 7); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 8); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 9); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                default: // standard gamepad: https://w3c.github.io/gamepad/#remapping
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 0); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 1); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 2); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_BUTTON(ImGui.NavInput.DpadLeft, 14); // D-Pad Left
+                                    MAP_BUTTON(ImGui.NavInput.DpadRight, 15); // D-Pad Right
+                                    MAP_BUTTON(ImGui.NavInput.DpadUp, 12); // D-Pad Up
+                                    MAP_BUTTON(ImGui.NavInput.DpadDown, 13); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 6); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 7); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                            }
+                        }
+                    }
+                    ImGui.NewFrame();
+                    this.update(dt);
+                    ImGui.EndFrame();
+                    ImGui.Render();
+                    app.renderer.render(this.imgui, this.tex);
+                    this.surface.interactive = this.io.WantCaptureMouse;
+                }
+            };
+            exports_1("ImGuiWindow", ImGuiWindow);
+            canvas = null;
+            //export let gl: WebGL2RenderingContext | null = null;
+            g_ShaderHandle = null;
+            g_VertHandle = null;
+            g_FragHandle = null;
+            g_AttribLocationTex = null;
+            g_AttribLocationProjMtx = null;
+            g_AttribLocationPosition = -1;
+            g_AttribLocationUV = -1;
+            g_AttribLocationColor = -1;
+            g_VaoHandle = null;
+            g_VboHandle = null;
+            g_ElementsHandle = null;
+            g_FontTexture = null;
+            // MouseEvent.button
+            // A number representing a given button:
+            // 0: Main button pressed, usually the left button or the un-initialized state
+            // 1: Auxiliary button pressed, usually the wheel button or the middle button (if present)
+            // 2: Secondary button pressed, usually the right button
+            // 3: Fourth button, typically the Browser Back button
+            // 4: Fifth button, typically the Browser Forward button
+            mouse_button_map = [0, 2, 1, 3, 4];
+        }
+    };
+});
+//# sourceMappingURL=imgui_impl.js.map
\ No newline at end of file
diff --git a/src/imgui_impl.js.map b/src/imgui_impl.js.map
new file mode 100644
index 0000000..bcb545f
--- /dev/null
+++ b/src/imgui_impl.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/src/imgui_impl.ts b/src/imgui_impl.ts
new file mode 100644
index 0000000..a5dad20
--- /dev/null
+++ b/src/imgui_impl.ts
@@ -0,0 +1,797 @@
+import * as ImGui from "imgui-js";
+import { ImVec2 } from "imgui-js";
+import * as PIXI from "pixi.js";
+import * as U from "./utils";
+
+let clipboard_text: string = "";
+
+const contexts: ImGui.ImGuiContext[] = [];
+const contextIOs: ImGui.ImGuiIO[] = [];
+let isFirstWindow: boolean = true;
+
+class ImGuiImplInternalRenderer extends PIXI.ObjectRenderer
+{
+    constructor(r: PIXI.Renderer)
+    {
+        super(r);
+    }
+    render(owner: PIXI.DisplayObject): void
+    {
+        if (!(owner instanceof ImGuiWindowLayer)) return;
+
+        const window: ImGuiWindow = (owner as ImGuiWindowLayer).window;
+
+        const io: ImGui.ImGuiIO = window.io;
+        const draw_data: ImGui.ImDrawData = ImGui.GetDrawData();
+        if (draw_data === null) { throw new Error(); }
+
+        gl || console.log(draw_data);
+
+        // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+        const fb_width: number = io.DisplaySize.x * io.DisplayFramebufferScale.x;
+        const fb_height: number = io.DisplaySize.y * io.DisplayFramebufferScale.y;
+        if (fb_width === 0 || fb_height === 0) {
+            return;
+        }
+        draw_data.ScaleClipRects(io.DisplayFramebufferScale);
+
+        // Backup GL state
+        const last_program: WebGLProgram | null = gl && gl.getParameter(gl.CURRENT_PROGRAM) || null;
+        const last_active_texture: GLenum | null = gl && gl.getParameter(gl.ACTIVE_TEXTURE) || null;
+        gl && gl.activeTexture(gl.TEXTURE0);
+        const last_texture0: WebGLTexture | null = gl && gl.getParameter(gl.TEXTURE_BINDING_2D) || null;
+        const last_vertex_array: WebGLVertexArrayObject | null = gl && gl.getParameter(gl.VERTEX_ARRAY_BINDING) || null;
+        const last_array_buffer: WebGLBuffer | null = gl && gl.getParameter(gl.ARRAY_BUFFER_BINDING) || null;
+        const last_element_array_buffer: WebGLBuffer | null = gl && gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING) || null;
+        // GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+        const last_viewport: Int32Array | null = gl && gl.getParameter(gl.VIEWPORT) || null;
+        const last_scissor_box: Int32Array | null = gl && gl.getParameter(gl.SCISSOR_BOX) || null;
+        const last_blend_src_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_SRC_RGB) || null;
+        const last_blend_dst_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_DST_RGB) || null;
+        const last_blend_src_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_SRC_ALPHA) || null;
+        const last_blend_dst_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_DST_ALPHA) || null;
+        const last_blend_equation_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_EQUATION_RGB) || null;
+        const last_blend_equation_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_EQUATION_ALPHA) || null;
+        const last_enable_blend: GLboolean | null = gl && gl.getParameter(gl.BLEND) || null;
+        const last_enable_cull_face: GLboolean | null = gl && gl.getParameter(gl.CULL_FACE) || null;
+        const last_enable_depth_test: GLboolean | null = gl && gl.getParameter(gl.DEPTH_TEST) || null;
+        const last_enable_scissor_test: GLboolean | null = gl && gl.getParameter(gl.SCISSOR_TEST) || null;
+
+        gl.clearColor(0, 0, 0, 0);
+        gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+        
+        gl && gl.bindVertexArray(g_VaoHandle);
+
+        // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
+        gl && gl.enable(gl.BLEND);
+        gl && gl.blendEquation(gl.FUNC_ADD);
+        gl && gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE);
+        gl && gl.disable(gl.CULL_FACE);
+        gl && gl.disable(gl.DEPTH_TEST);
+        gl && gl.enable(gl.SCISSOR_TEST);
+        // glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+
+        // Setup viewport, orthographic projection matrix
+        // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+        gl && gl.viewport(0, 0, fb_width, fb_height);
+        const L: number = draw_data.DisplayPos.x;
+        const R: number = draw_data.DisplayPos.x + draw_data.DisplaySize.x;
+        const T: number = draw_data.DisplayPos.y;
+        const B: number = draw_data.DisplayPos.y + draw_data.DisplaySize.y;
+        // we actually flip the bottom and top here to match with PIXI's texture usage
+        const ortho_projection: Float32Array = new Float32Array([
+            2.0 / (R - L),     0.0,                0.0, 0.0,
+            0.0,               2.0 / (B - T),      0.0, 0.0,
+            0.0,               0.0,               -1.0, 0.0,
+            (R + L) / (L - R), (B + T) / (T - B),  0.0, 1.0,
+        ]);
+        gl && gl.useProgram(g_ShaderHandle);
+        gl && gl.uniform1i(g_AttribLocationTex, 0);
+        gl && g_AttribLocationProjMtx && gl.uniformMatrix4fv(g_AttribLocationProjMtx, false, ortho_projection);
+
+        // Render command lists
+        gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+        gl && gl.enableVertexAttribArray(g_AttribLocationPosition);
+        gl && gl.enableVertexAttribArray(g_AttribLocationUV);
+        gl && gl.enableVertexAttribArray(g_AttribLocationColor);
+
+        gl && gl.vertexAttribPointer(g_AttribLocationPosition, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertPosOffset);
+        gl && gl.vertexAttribPointer(g_AttribLocationUV, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertUVOffset);
+        gl && gl.vertexAttribPointer(g_AttribLocationColor, 4, gl.UNSIGNED_BYTE, true, ImGui.ImDrawVertSize, ImGui.ImDrawVertColOffset);
+
+        // Draw
+        const pos = draw_data.DisplayPos;
+        const idx_buffer_type: GLenum = gl && ((ImGui.ImDrawIdxSize === 4) ? gl.UNSIGNED_INT : gl.UNSIGNED_SHORT) || 0;
+        draw_data.IterateDrawLists((draw_list: ImGui.ImDrawList): void => {
+            gl || console.log(draw_list);
+            gl || console.log("VtxBuffer.length", draw_list.VtxBuffer.length);
+            gl || console.log("IdxBuffer.length", draw_list.IdxBuffer.length);
+            
+            let idx_buffer_offset: number = 0;
+
+            gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+            gl && gl.bufferData(gl.ARRAY_BUFFER, draw_list.VtxBuffer, gl.STREAM_DRAW);
+            gl && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+            gl && gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, draw_list.IdxBuffer, gl.STREAM_DRAW);
+
+            draw_list.IterateDrawCmds((draw_cmd: ImGui.ImDrawCmd): void => {
+                gl || console.log(draw_cmd);
+                gl || console.log("ElemCount", draw_cmd.ElemCount);
+                gl || console.log("ClipRect", draw_cmd.ClipRect.x, draw_cmd.ClipRect.y, draw_cmd.ClipRect.z - draw_cmd.ClipRect.x, draw_cmd.ClipRect.w - draw_cmd.ClipRect.y);
+                gl || console.log("TextureId", draw_cmd.TextureId);
+                if (!gl) {
+                    console.log("i: pos.x pos.y uv.x uv.y col");
+                    for (let i = 0; i < Math.min(3, draw_cmd.ElemCount); ++i) {
+                        const view: ImGui.ImDrawVert = new ImGui.ImDrawVert(draw_list.VtxBuffer.buffer, draw_list.VtxBuffer.byteOffset + i * ImGui.ImDrawVertSize);
+                        console.log(`${i}: ${view.pos[0].toFixed(2)} ${view.pos[1].toFixed(2)} ${view.uv[0].toFixed(5)} ${view.uv[1].toFixed(5)} ${("00000000" + view.col[0].toString(16)).substr(-8)}`);
+                    }
+                }
+
+                if (draw_cmd.UserCallback !== null) {
+                    // User callback (registered via ImDrawList::AddCallback)
+                    draw_cmd.UserCallback(draw_list, draw_cmd);
+                } else {
+                    const clip_rect = new ImGui.ImVec4(draw_cmd.ClipRect.x - pos.x, draw_cmd.ClipRect.y - pos.y, draw_cmd.ClipRect.z - pos.x, draw_cmd.ClipRect.w - pos.y);
+                    if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0 && clip_rect.w >= 0.0) {
+                        // Apply scissor/clipping rectangle
+                        gl && gl.scissor(clip_rect.x, clip_rect.y, clip_rect.z - clip_rect.x, clip_rect.w - clip_rect.y);
+
+                        // Bind texture, Draw
+                        gl && gl.bindTexture(gl.TEXTURE_2D, draw_cmd.TextureId);
+                        gl && gl.drawElements(gl.TRIANGLES, draw_cmd.ElemCount, idx_buffer_type, idx_buffer_offset);
+                    }
+                }
+
+                idx_buffer_offset += draw_cmd.ElemCount * ImGui.ImDrawIdxSize;
+            });
+        });
+
+        // Restore modified GL state
+        
+        gl && (last_program !== null) && gl.useProgram(last_program);
+        gl && (last_texture0 !== null) && gl.bindTexture(gl.TEXTURE_2D, last_texture0);
+        gl && (last_active_texture !== null) && gl.activeTexture(last_active_texture);
+        gl && gl.disableVertexAttribArray(g_AttribLocationPosition);
+        gl && gl.disableVertexAttribArray(g_AttribLocationUV);
+        gl && gl.disableVertexAttribArray(g_AttribLocationColor);
+        gl && (last_vertex_array !== null) && gl.bindVertexArray(last_vertex_array);
+        gl && (last_array_buffer !== null) && gl.bindBuffer(gl.ARRAY_BUFFER, last_array_buffer);
+        gl && (last_element_array_buffer !== null) && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+        gl && (last_viewport !== null) && gl.viewport(last_viewport[0], last_viewport[1], last_viewport[2], last_viewport[3]);
+        gl && (last_scissor_box !== null) && gl.scissor(last_scissor_box[0], last_scissor_box[1], last_scissor_box[2], last_scissor_box[3]);
+        gl && (last_blend_equation_rgb !== null && last_blend_equation_alpha !== null) && gl.blendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+        gl && (last_blend_src_rgb !== null && last_blend_src_alpha !== null && last_blend_dst_rgb !== null && last_blend_dst_alpha !== null) && gl.blendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
+        gl && (last_enable_blend ? gl.enable(gl.BLEND) : gl.disable(gl.BLEND));
+        gl && (last_enable_cull_face ? gl.enable(gl.CULL_FACE) : gl.disable(gl.CULL_FACE));
+        gl && (last_enable_depth_test ? gl.enable(gl.DEPTH_TEST) : gl.disable(gl.DEPTH_TEST));
+        gl && (last_enable_scissor_test ? gl.enable(gl.SCISSOR_TEST) : gl.disable(gl.SCISSOR_TEST));
+        // glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
+    }
+}
+
+let gl: WebGL2RenderingContext = null;
+let app: PIXI.Application = null;
+
+class ImGuiWindowLayer extends PIXI.Sprite
+{
+    public readonly window: ImGuiWindow;
+    constructor(window: ImGuiWindow, tex:PIXI.RenderTexture)
+    {
+        super();
+        this.pluginName = "imgui_renderer";
+        this.window = window;
+    }
+}
+
+export class ImGuiWindow extends PIXI.Container
+{
+    public readonly ctx: ImGui.ImGuiContext;
+    public readonly io: ImGui.ImGuiIO;
+    private sizeX: number;
+    private sizeY: number;
+    public getSizeX(): number { return this.sizeX; }
+    public getSizeY(): number { return this.sizeY; }
+
+    private baseTex: PIXI.BaseRenderTexture = new PIXI.BaseRenderTexture({scaleMode: PIXI.SCALE_MODES.LINEAR, resolution: 1, type: PIXI.TYPES.FLOAT, format: PIXI.FORMATS.RGBA});
+    private tex: PIXI.RenderTexture = new PIXI.RenderTexture(this.baseTex);
+    
+    private surface: PIXI.Sprite = new PIXI.Sprite(this.tex);
+    private imgui: ImGuiWindowLayer = new ImGuiWindowLayer(this, this.tex);
+    
+    private update: (dt: number) => void;
+    constructor(sizeX: number, sizeY: number, update: (dt: number) => void)
+    {
+        super();
+
+        this.ctx = ImGui.CreateContext(contextIOs.length == 0 ? null : contextIOs[0].Fonts);
+        ImGui.SetCurrentContext(this.ctx);
+        this.io = ImGui.GetIO();
+
+        contexts.push(this.ctx);
+        contextIOs.push(this.io);
+
+        if (contexts.length == 1)
+        {
+            CreateFontsTexture();
+        }
+
+        if (typeof(window) !== "undefined") {
+            ImGui.LoadIniSettingsFromMemory(window.localStorage.getItem("imgui.ini") || "");
+        }
+
+        if (typeof(navigator) !== "undefined") {
+            this.io.ConfigMacOSXBehaviors = navigator.platform.match(/Mac/) !== null;
+        }
+
+        this.io.SetClipboardTextFn = (user_data: any, text: string): void => {
+            clipboard_text = text;
+            // console.log(`set clipboard_text: "${clipboard_text}"`);
+            if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+                // console.log(`clipboard.writeText: "${clipboard_text}"`);
+                (navigator as any).clipboard.writeText(clipboard_text).then((): void => {
+                    // console.log(`clipboard.writeText: "${clipboard_text}" done.`);
+                });
+            }
+        };
+        this.io.GetClipboardTextFn = (user_data: any): string => {
+            // if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+            //     console.log(`clipboard.readText: "${clipboard_text}"`);
+            //     (navigator as any).clipboard.readText().then((text: string): void => {
+            //         clipboard_text = text;
+            //         console.log(`clipboard.readText: "${clipboard_text}" done.`);
+            //     });
+            // }
+            // console.log(`get clipboard_text: "${clipboard_text}"`);
+            return clipboard_text;
+        };
+        this.io.ClipboardUserData = null;
+
+        // Setup back-end capabilities flags
+        this.io.BackendFlags |= ImGui.BackendFlags.HasMouseCursors;   // We can honor GetMouseCursor() values (optional)
+
+        // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+        this.io.KeyMap[ImGui.Key.Tab] = 9;
+        this.io.KeyMap[ImGui.Key.LeftArrow] = 37;
+        this.io.KeyMap[ImGui.Key.RightArrow] = 39;
+        this.io.KeyMap[ImGui.Key.UpArrow] = 38;
+        this.io.KeyMap[ImGui.Key.DownArrow] = 40;
+        this.io.KeyMap[ImGui.Key.PageUp] = 33;
+        this.io.KeyMap[ImGui.Key.PageDown] = 34;
+        this.io.KeyMap[ImGui.Key.Home] = 36;
+        this.io.KeyMap[ImGui.Key.End] = 35;
+        this.io.KeyMap[ImGui.Key.Insert] = 45;
+        this.io.KeyMap[ImGui.Key.Delete] = 46;
+        this.io.KeyMap[ImGui.Key.Backspace] = 8;
+        this.io.KeyMap[ImGui.Key.Space] = 32;
+        this.io.KeyMap[ImGui.Key.Enter] = 13;
+        this.io.KeyMap[ImGui.Key.Escape] = 27;
+        this.io.KeyMap[ImGui.Key.A] = 65;
+        this.io.KeyMap[ImGui.Key.C] = 67;
+        this.io.KeyMap[ImGui.Key.V] = 86;
+        this.io.KeyMap[ImGui.Key.X] = 88;
+        this.io.KeyMap[ImGui.Key.Y] = 89;
+        this.io.KeyMap[ImGui.Key.Z] = 90;
+
+        this.update = update;
+        this.resize(sizeX, sizeY);
+        this.imgui.pluginName = 'imgui_renderer';
+        this.addChild(this.surface);
+        app.renderer.plugins.interaction.addListener("mousedown", this.mouseDown.bind(this));
+        app.renderer.plugins.interaction.addListener("mouseup", this.mouseUp.bind(this));
+        app.ticker.add(this.updateInternal.bind(this));
+
+        this.interactive = false;
+        this.interactiveChildren = true;
+
+        this.surface.interactive = false;
+    }
+    withContext(cb: () => void)
+    {
+        ImGui.SetCurrentContext(this.ctx);
+        cb();
+    }
+    mouseDown(e: PIXI.interaction.InteractionEvent): void
+    {
+        if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface)
+        {
+            this.io.MouseDown[mouse_button_map[0]] = true;
+        }
+    }
+    mouseUp(e: PIXI.interaction.InteractionEvent): void
+    {
+        if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface)
+        {
+            this.io.MouseDown[mouse_button_map[0]] = false;
+        }
+    }
+    resize(sizeX: number, sizeY: number)
+    {
+        this.sizeX = sizeX;
+        this.sizeY = sizeY;
+        this.baseTex.resize(sizeX, sizeY);
+        this.tex.frame = new PIXI.Rectangle(0, 0, this.baseTex.width, this.baseTex.height);
+    }
+    updateInternal(deltaTime: number)
+    {
+        const dt: number = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+
+        ImGui.SetCurrentContext(this.ctx);
+
+        if (this.io.WantSaveIniSettings) {
+            this.io.WantSaveIniSettings = false;
+            if (typeof(window) !== "undefined") {
+                window.localStorage.setItem("imgui.ini", ImGui.SaveIniSettingsToMemory());
+            }
+        }
+
+        this.io.DisplaySize.x = this.sizeX;
+        this.io.DisplaySize.y = this.sizeY;
+        this.io.DisplayFramebufferScale.x = 1;
+        this.io.DisplayFramebufferScale.y = 1;
+
+        this.io.DeltaTime = dt;
+
+        let localPos: PIXI.Point = this.toLocal(app.renderer.plugins.interaction.mouse.global);
+        if (localPos.x < 0 || localPos.y < 0 || localPos.x >= this.sizeX || localPos.y >= this.sizeY)
+        {
+            localPos = new PIXI.Point(-Number.MAX_VALUE, -Number.MAX_VALUE);
+        }
+        this.io.MousePos.x = localPos.x;
+        this.io.MousePos.y = localPos.y;
+
+        if (this.io.WantSetMousePos) {
+            console.log("TODO: MousePos", this.io.MousePos.x, this.io.MousePos.y);
+        }
+
+        if (typeof(document) !== "undefined") {
+            if (this.io.MouseDrawCursor) {
+                document.body.style.cursor = "none";
+            } else {
+                switch (ImGui.GetMouseCursor()) {
+                    case ImGui.MouseCursor.None: document.body.style.cursor = "none"; break;
+                    default: case ImGui.MouseCursor.Arrow: document.body.style.cursor = "default"; break;
+                    case ImGui.MouseCursor.TextInput: document.body.style.cursor = "text"; break;         // When hovering over InputText, etc.
+                    case ImGui.MouseCursor.ResizeAll: document.body.style.cursor = "move"; break;         // Unused
+                    case ImGui.MouseCursor.ResizeNS: document.body.style.cursor = "ns-resize"; break;     // When hovering over an horizontal border
+                    case ImGui.MouseCursor.ResizeEW: document.body.style.cursor = "ew-resize"; break;     // When hovering over a vertical border or a column
+                    case ImGui.MouseCursor.ResizeNESW: document.body.style.cursor = "nesw-resize"; break; // When hovering over the bottom-left corner of a window
+                    case ImGui.MouseCursor.ResizeNWSE: document.body.style.cursor = "nwse-resize"; break; // When hovering over the bottom-right corner of a window
+                    case ImGui.MouseCursor.Hand: document.body.style.cursor = "move"; break;
+                }
+            }
+        }
+
+        // Gamepad navigation mapping [BETA]
+        for (let i = 0; i < this.io.NavInputs.length; ++i) {
+            this.io.NavInputs[i] = 0.0;
+        }
+        if (this.io.ConfigFlags & ImGui.ConfigFlags.NavEnableGamepad) {
+            // Update gamepad inputs
+            const gamepads: (Gamepad | null)[] = (typeof(navigator) !== "undefined" && typeof(navigator.getGamepads) === "function") ? navigator.getGamepads() : [];
+            for (let i = 0; i < gamepads.length; ++i) {
+                const gamepad: Gamepad | null = gamepads[i];
+                if (!gamepad) { continue; }
+                const buttons_count: number = gamepad.buttons.length;
+                const axes_count: number = gamepad.axes.length;
+                const MAP_BUTTON = function(NAV_NO: number, BUTTON_NO: number): void {
+                    if (!gamepad) { return; }
+                    if (buttons_count > BUTTON_NO && gamepad.buttons[BUTTON_NO].pressed)
+                        this.io.NavInputs[NAV_NO] = 1.0;
+                }
+                const MAP_ANALOG = function(NAV_NO: number, AXIS_NO: number, V0: number, V1: number): void {
+                    if (!gamepad) { return; }
+                    let v: number = (axes_count > AXIS_NO) ? gamepad.axes[AXIS_NO] : V0;
+                    v = (v - V0) / (V1 - V0);
+                    if (v > 1.0) v = 1.0;
+                    if (this.io.NavInputs[NAV_NO] < v) this.io.NavInputs[NAV_NO] = v;
+                }
+                // TODO: map input based on vendor and product id
+                // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/id
+                const match: RegExpMatchArray | null = gamepad.id.match(/^([0-9a-f]{4})-([0-9a-f]{4})-.*$/);
+                const match_chrome: RegExpMatchArray | null = gamepad.id.match(/^.*\(.*Vendor: ([0-9a-f]{4}) Product: ([0-9a-f]{4})\).*$/);
+                const vendor: string = (match && match[1]) || (match_chrome && match_chrome[1]) || "0000";
+                const product: string = (match && match[2]) || (match_chrome && match_chrome[2]) || "0000";
+                switch (vendor + product) {
+                    case "046dc216": // Logitech Logitech Dual Action (Vendor: 046d Product: c216)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    1); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      2); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        0); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_ANALOG(ImGui.NavInput.DpadLeft,    4, -0.3, -0.9); // D-Pad Left
+                    MAP_ANALOG(ImGui.NavInput.DpadRight,   4, +0.3, +0.9); // D-Pad Right
+                    MAP_ANALOG(ImGui.NavInput.DpadUp,      5, -0.3, -0.9); // D-Pad Up
+                    MAP_ANALOG(ImGui.NavInput.DpadDown,    5, +0.3, +0.9); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   6); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   7); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    case "046dc21d": // Logitech Gamepad F310 (STANDARD GAMEPAD Vendor: 046d Product: c21d)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    0); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      1); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        2); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_BUTTON(ImGui.NavInput.DpadLeft,    14); // D-Pad Left
+                    MAP_BUTTON(ImGui.NavInput.DpadRight,   15); // D-Pad Right
+                    MAP_BUTTON(ImGui.NavInput.DpadUp,      12); // D-Pad Up
+                    MAP_BUTTON(ImGui.NavInput.DpadDown,    13); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_ANALOG(ImGui.NavInput.TweakSlow,   6, +0.3, +0.9); // L2 / LT
+                    MAP_ANALOG(ImGui.NavInput.TweakFast,   7, +0.3, +0.9); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    case "2dc86001": // 8Bitdo SN30 Pro  8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6001)
+                    case "2dc86101": // 8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6101)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    1); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      0); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        4); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_ANALOG(ImGui.NavInput.DpadLeft,    6, -0.3, -0.9); // D-Pad Left
+                    MAP_ANALOG(ImGui.NavInput.DpadRight,   6, +0.3, +0.9); // D-Pad Right
+                    MAP_ANALOG(ImGui.NavInput.DpadUp,      7, -0.3, -0.9); // D-Pad Up
+                    MAP_ANALOG(ImGui.NavInput.DpadDown,    7, +0.3, +0.9); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   6); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   7); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   8); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   9); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    default: // standard gamepad: https://w3c.github.io/gamepad/#remapping
+                    MAP_BUTTON(ImGui.NavInput.Activate,    0); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      1); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        2); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_BUTTON(ImGui.NavInput.DpadLeft,    14); // D-Pad Left
+                    MAP_BUTTON(ImGui.NavInput.DpadRight,   15); // D-Pad Right
+                    MAP_BUTTON(ImGui.NavInput.DpadUp,      12); // D-Pad Up
+                    MAP_BUTTON(ImGui.NavInput.DpadDown,    13); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   6); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   7); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                }
+            }
+        }
+
+        ImGui.NewFrame();
+
+        this.update(dt);
+
+        ImGui.EndFrame();
+        ImGui.Render();
+
+        app.renderer.render(this.imgui, this.tex);
+
+        this.surface.interactive = this.io.WantCaptureMouse;
+    }
+}
+
+let canvas: HTMLCanvasElement | null = null;
+
+//export let gl: WebGL2RenderingContext | null = null;
+let g_ShaderHandle: WebGLProgram | null = null;
+let g_VertHandle: WebGLShader | null = null;
+let g_FragHandle: WebGLShader | null = null;
+let g_AttribLocationTex: WebGLUniformLocation | null = null;
+let g_AttribLocationProjMtx: WebGLUniformLocation | null = null;
+let g_AttribLocationPosition: GLint = -1;
+let g_AttribLocationUV: GLint = -1;
+let g_AttribLocationColor: GLint = -1;
+let g_VaoHandle: WebGLVertexArrayObject = null;
+let g_VboHandle: WebGLBuffer | null = null;
+let g_ElementsHandle: WebGLBuffer | null = null;
+let g_FontTexture: WebGLTexture | null = null;
+
+function document_on_copy(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        event.clipboardData.setData("text/plain", clipboard_text);
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function document_on_cut(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        event.clipboardData.setData("text/plain", clipboard_text);
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function document_on_paste(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        clipboard_text = event.clipboardData.getData("text/plain");
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function window_on_gamepadconnected(event: any /* GamepadEvent */): void {
+    console.log("Gamepad connected at index %d: %s. %d buttons, %d axes.",
+    event.gamepad.index, event.gamepad.id,
+    event.gamepad.buttons.length, event.gamepad.axes.length);
+}
+
+function window_on_gamepaddisconnected(event: any /* GamepadEvent */): void {
+    console.log("Gamepad disconnected at index %d: %s.",
+    event.gamepad.index, event.gamepad.id);
+}
+
+function canvas_on_blur(event: FocusEvent): void {
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = false;
+        io.KeyShift = false;
+        io.KeyAlt = false;
+        io.KeySuper = false;
+        for (let i = 0; i < io.KeysDown.length; ++i) {
+            io.KeysDown[i] = false;
+        }
+        for (let i = 0; i < io.MouseDown.length; ++i) {
+            io.MouseDown[i] = false;
+        }
+    }
+}
+
+function canvas_on_keydown(event: KeyboardEvent): void {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = event.ctrlKey;
+        io.KeyShift = event.shiftKey;
+        io.KeyAlt = event.altKey;
+        io.KeySuper = event.metaKey;
+        ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+        io.KeysDown[event.keyCode] = true;
+        // forward to the keypress event
+        if (/*io.WantCaptureKeyboard ||*/ event.key === "Tab") {
+            event.preventDefault();
+        }
+    }
+}
+
+function canvas_on_keyup(event: KeyboardEvent): void  {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = event.ctrlKey;
+        io.KeyShift = event.shiftKey;
+        io.KeyAlt = event.altKey;
+        io.KeySuper = event.metaKey;
+        ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+        io.KeysDown[event.keyCode] = false;
+        if (io.WantCaptureKeyboard) {
+            event.preventDefault();
+        }
+    }
+}
+
+function canvas_on_keypress(event: KeyboardEvent): void  {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.AddInputCharacter(event.charCode);
+        if (io.WantCaptureKeyboard) {
+            event.preventDefault();
+        }
+    }
+}
+
+// MouseEvent.button
+// A number representing a given button:
+// 0: Main button pressed, usually the left button or the un-initialized state
+// 1: Auxiliary button pressed, usually the wheel button or the middle button (if present)
+// 2: Secondary button pressed, usually the right button
+// 3: Fourth button, typically the Browser Back button
+// 4: Fifth button, typically the Browser Forward button
+const mouse_button_map: number[] = [ 0, 2, 1, 3, 4 ];
+
+function canvas_on_contextmenu(event: Event): void  {
+    for (var io of contextIOs)
+    {
+        if (io.WantCaptureMouse) { event.preventDefault(); }
+    }
+}
+
+function canvas_on_wheel(event: WheelEvent): void  {
+    for (var io of contextIOs)
+    {
+        let scale: number = 1.0;
+        switch (event.deltaMode) {
+            case event.DOM_DELTA_PIXEL: scale = 0.01; break;
+            case event.DOM_DELTA_LINE: scale = 0.2; break;
+            case event.DOM_DELTA_PAGE: scale = 1.0; break;
+        }
+        io.MouseWheelH = event.deltaX * scale;
+        io.MouseWheel = -event.deltaY * scale; // Mouse wheel: 1 unit scrolls about 5 lines text.
+        if (io.WantCaptureMouse) {
+            event.preventDefault();
+        }
+    }
+}
+
+export function PrePIXIInit(): void
+{
+    PIXI.Renderer.registerPlugin("imgui_renderer", U.fromConstructor(ImGuiImplInternalRenderer));
+}
+
+export function Init(_app: PIXI.Application): void {
+    // Setup Dear ImGui binding
+    ImGui.IMGUI_CHECKVERSION();
+
+    if (typeof(document) !== "undefined") {
+        document.body.addEventListener("copy", document_on_copy);
+        document.body.addEventListener("cut", document_on_cut);
+        document.body.addEventListener("paste", document_on_paste);
+    }
+
+    if (typeof(window) !== "undefined") {
+        window.addEventListener("gamepadconnected", window_on_gamepadconnected);
+        window.addEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+    }
+
+    app = _app;
+    gl = (app.renderer as any).gl;
+    canvas = app.view;
+
+    gl.getExtension("EXT_color_buffer_float");
+
+    if (canvas !== null) {
+        canvas.style.touchAction = "none"; // Disable browser handling of all panning and zooming gestures.
+        canvas.addEventListener("blur", canvas_on_blur);
+        canvas.addEventListener("keydown", canvas_on_keydown);
+        canvas.addEventListener("keyup", canvas_on_keyup);
+        canvas.addEventListener("keypress", canvas_on_keypress);
+        canvas.addEventListener("contextmenu", canvas_on_contextmenu);
+        canvas.addEventListener("wheel", canvas_on_wheel);
+    }
+
+    CreateDeviceObjects();
+}
+
+export function Shutdown(): void {
+    DestroyDeviceObjects();
+
+    if (canvas !== null) {
+        canvas.removeEventListener("blur", canvas_on_blur);
+        canvas.removeEventListener("keydown", canvas_on_keydown);
+        canvas.removeEventListener("keyup", canvas_on_keyup);
+        canvas.removeEventListener("keypress", canvas_on_keypress);
+        canvas.removeEventListener("contextmenu", canvas_on_contextmenu);
+        canvas.removeEventListener("wheel", canvas_on_wheel);
+    }
+
+    app = null;
+    canvas = null;
+
+    if (typeof(window) !== "undefined") {
+        window.removeEventListener("gamepadconnected", window_on_gamepadconnected);
+        window.removeEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+    }
+
+    if (typeof(document) !== "undefined") {
+        document.body.removeEventListener("copy", document_on_copy);
+        document.body.removeEventListener("cut", document_on_cut);
+        document.body.removeEventListener("paste", document_on_paste);
+    }
+}
+
+function CreateFontsTexture(): void {
+    const io = ImGui.GetIO();
+
+    // Backup GL state
+    const last_texture: WebGLTexture | null = gl && gl.getParameter(gl.TEXTURE_BINDING_2D);
+
+    // Build texture atlas
+    // const width: number = 256;
+    // const height: number = 256;
+    // const pixels: Uint8Array = new Uint8Array(4 * width * height).fill(0xff);
+    const { width, height, pixels } = io.Fonts.GetTexDataAsRGBA32();   // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+    // console.log(`font texture ${width} x ${height} @ ${pixels.length}`);
+
+    // Upload texture to graphics system
+    g_FontTexture = gl && gl.createTexture();
+    gl && gl.bindTexture(gl.TEXTURE_2D, g_FontTexture);
+    gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+    gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+    // gl && gl.pixelStorei(gl.UNPACK_ROW_LENGTH); // WebGL2
+    gl && gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+
+    // Store our identifier
+    io.Fonts.TexID = g_FontTexture || { foo: "bar" };
+    // console.log("font texture id", g_FontTexture);
+
+    // Restore modified GL state
+    gl && last_texture && gl.bindTexture(gl.TEXTURE_2D, last_texture);
+}
+
+function DestroyFontsTexture(): void {
+    const io = ImGui.GetIO();
+    io.Fonts.TexID = null;
+    gl && gl.deleteTexture(g_FontTexture); g_FontTexture = null;
+}
+
+function CreateDeviceObjects(): void {
+    const vertex_shader: string[] = [
+        "#version 300 es",
+        "uniform mat4 ProjMtx;",
+        "in vec2 Position;",
+        "in vec2 UV;",
+        "in vec4 Color;",
+        "out vec2 Frag_UV;",
+        "out vec4 Frag_Color;",
+        "void main() {",
+        "	Frag_UV = UV;",
+        "	Frag_Color = Color;",
+        "	gl_Position = ProjMtx * vec4(Position.xy,0,1);",
+        "}",
+    ];
+
+    const fragment_shader: string[] = [
+        "#version 300 es",
+        "precision mediump float;", // WebGL requires precision specifiers
+        "uniform sampler2D Texture;",
+        "in vec2 Frag_UV;",
+        "in vec4 Frag_Color;",
+        "out vec4 OutColor;",
+        "void main() {",
+        "	OutColor = Frag_Color * texture(Texture, Frag_UV);",
+        "}",
+    ];
+
+    g_ShaderHandle = gl && gl.createProgram();
+    g_VertHandle = gl && gl.createShader(gl.VERTEX_SHADER);
+    g_FragHandle = gl && gl.createShader(gl.FRAGMENT_SHADER);
+    gl && gl.shaderSource(g_VertHandle as WebGLShader, vertex_shader.join("\n"));
+    gl && gl.shaderSource(g_FragHandle as WebGLShader, fragment_shader.join("\n"));
+    gl && gl.compileShader(g_VertHandle as WebGLShader);
+    gl && gl.compileShader(g_FragHandle as WebGLShader);
+    gl && gl.attachShader(g_ShaderHandle as WebGLProgram, g_VertHandle as WebGLShader);
+    gl && gl.attachShader(g_ShaderHandle as WebGLProgram, g_FragHandle as WebGLShader);
+    gl && gl.linkProgram(g_ShaderHandle as WebGLProgram);
+
+    g_AttribLocationTex = gl && gl.getUniformLocation(g_ShaderHandle as WebGLProgram, "Texture");
+    g_AttribLocationProjMtx = gl && gl.getUniformLocation(g_ShaderHandle as WebGLProgram, "ProjMtx");
+    g_AttribLocationPosition = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "Position") || 0;
+    g_AttribLocationUV = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "UV") || 0;
+    g_AttribLocationColor = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "Color") || 0;
+
+    g_VaoHandle = gl && gl.createVertexArray();
+    g_VboHandle = gl && gl.createBuffer();
+    g_ElementsHandle = gl && gl.createBuffer();
+
+}
+
+function DestroyDeviceObjects(): void {
+    DestroyFontsTexture();
+
+    gl && gl.deleteVertexArray(g_VaoHandle); g_VaoHandle = null;
+    gl && gl.deleteBuffer(g_VboHandle); g_VboHandle = null;
+    gl && gl.deleteBuffer(g_ElementsHandle); g_ElementsHandle = null;
+
+    g_AttribLocationTex = null;
+    g_AttribLocationProjMtx = null;
+    g_AttribLocationPosition = -1;
+    g_AttribLocationUV = -1;
+    g_AttribLocationColor = -1;
+
+    gl && gl.deleteProgram(g_ShaderHandle); g_ShaderHandle = null;
+    gl && gl.deleteShader(g_VertHandle); g_VertHandle = null;
+    gl && gl.deleteShader(g_FragHandle); g_FragHandle = null;
+}
diff --git a/src/main.js b/src/main.js
index f763140..0c19249 100644
--- a/src/main.js
+++ b/src/main.js
@@ -1,4 +1,4 @@
-System.register(["../imgui-js/example/imgui_impl", "imgui-js"], function (exports_1, context_1) {
+System.register(["./imgui_impl", "imgui-js", "pixi.js", "./utils"], function (exports_1, context_1) {
     "use strict";
     var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
         return new (P || (P = Promise))(function (resolve, reject) {
@@ -8,7 +8,7 @@
             step((generator = generator.apply(thisArg, _arguments || [])).next());
         });
     };
-    var ImGui_Impl, ImGui, imgui_js_1, imgui_js_2, clearColor, windowOpen, text;
+    var ImGui_Impl, imgui_impl_1, ImGui, imgui_js_1, imgui_js_2, PIXI, U, clearColor;
     var __moduleName = context_1 && context_1.id;
     function main() {
         return __awaiter(this, void 0, void 0, function* () {
@@ -20,74 +20,88 @@
     function init() {
         console.log("init()");
         console.log("Total allocated space (uordblks) @ _init:", ImGui.bind.mallinfo().uordblks);
-        // Setup Dear ImGui binding
-        ImGui.IMGUI_CHECKVERSION();
-        ImGui.CreateContext();
-        const io = ImGui.GetIO();
-        io.ConfigFlags |= ImGui.ConfigFlags.NavEnableKeyboard; // Enable Keyboard Controls
-        // Setup style
-        ImGui.StyleColorsLight();
+        ImGui_Impl.PrePIXIInit();
+        let settings = { width: 1, height: 1, antialias: true, backgroundColor: U.vec2col(clearColor) };
+        let app = new PIXI.Application(settings);
         const output = document.getElementById("output") || document.body;
-        const canvas = document.createElement("canvas");
-        output.appendChild(canvas);
-        canvas.tabIndex = 1;
-        canvas.style.position = "absolute";
-        canvas.style.left = "0px";
-        canvas.style.right = "0px";
-        canvas.style.top = "0px";
-        canvas.style.bottom = "0px";
-        canvas.style.width = "100%";
-        canvas.style.height = "100%";
-        ImGui_Impl.Init(canvas);
-        window.requestAnimationFrame(loop);
+        output.appendChild(app.view);
+        app.view.tabIndex = 1;
+        app.view.style.position = "absolute";
+        app.view.style.left = "0px";
+        app.view.style.right = "0px";
+        app.view.style.top = "0px";
+        app.view.style.bottom = "0px";
+        app.view.style.width = "100%";
+        app.view.style.height = "100%";
+        ImGui_Impl.Init(app);
+        app.ticker.add((deltaTime) => {
+            const dt = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+            app.render();
+        });
+        let resizeFunc = function () {
+            app.renderer.resize(window.innerWidth, window.innerHeight);
+        };
+        let bg = new PIXI.Graphics();
+        bg.beginFill(0xFF0000);
+        bg.drawRect(100, 100, 300, 300);
+        bg.endFill();
+        let styleCb = () => { ImGui.StyleColorsLight(); };
+        const imgui = new imgui_impl_1.ImGuiWindow(512, 512, makeUpdate());
+        const imgui2 = new imgui_impl_1.ImGuiWindow(512, 512, makeUpdate2());
+        imgui2.x = 200;
+        imgui2.y = 400;
+        imgui.withContext(styleCb);
+        imgui2.withContext(styleCb);
+        app.stage.addChild(imgui);
+        app.stage.addChild(bg);
+        app.stage.addChild(imgui2);
+        window.onresize = resizeFunc;
+        resizeFunc();
     }
-    function render(timeElapsed) {
-        ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(600, 400), ImGui.ImGuiCond.Always);
-        ImGui.Begin("Test Window", (_ = windowOpen) => windowOpen = _, 0);
-        if (ImGui.Button("Add Text")) {
-            text += "A";
-        }
-        ImGui.Text(text);
-        ImGui.End();
+    function makeUpdate() {
+        let text = "text";
+        return (timeElapsed) => {
+            ImGui.SetNextWindowPos(new imgui_js_2.ImVec2(0, 0));
+            ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(500, 500), ImGui.ImGuiCond.Always);
+            ImGui.Begin("Test Window");
+            if (ImGui.Button("Add Text")) {
+                text += "A";
+            }
+            ImGui.Text(text);
+            ImGui.End();
+        };
     }
-    function loop(timeElapsed) {
-        ImGui_Impl.NewFrame(timeElapsed);
-        ImGui.NewFrame();
-        render(timeElapsed);
-        ImGui.EndFrame();
-        // Rendering
-        ImGui.Render();
-        const gl = ImGui_Impl.gl;
-        if (gl) {
-            gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
-            gl.clearColor(clearColor.x, clearColor.y, clearColor.z, clearColor.w);
-            gl.clear(gl.COLOR_BUFFER_BIT);
-            //gl.useProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound
-        }
-        const ctx = ImGui_Impl.ctx;
-        if (ctx) {
-            // ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-            ctx.fillStyle = `rgba(${clearColor.x * 0xff}, ${clearColor.y * 0xff}, ${clearColor.z * 0xff}, ${clearColor.w})`;
-            ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-        }
-        ImGui_Impl.RenderDrawData(ImGui.GetDrawData());
-        window.requestAnimationFrame(loop);
+    function makeUpdate2() {
+        let text = "";
+        return (timeElapsed) => {
+            ImGui.SetNextWindowPos(new imgui_js_2.ImVec2(0, 0));
+            ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(500, 500), ImGui.ImGuiCond.Always);
+            ImGui.Begin("Test Window 2");
+            ImGui.InputText("Input: ", (_ = text) => text = _);
+            ImGui.Text(text);
+            ImGui.End();
+        };
     }
     return {
         setters: [
             function (ImGui_Impl_1) {
                 ImGui_Impl = ImGui_Impl_1;
+                imgui_impl_1 = ImGui_Impl_1;
             },
             function (ImGui_1) {
                 ImGui = ImGui_1;
                 imgui_js_1 = ImGui_1;
                 imgui_js_2 = ImGui_1;
+            },
+            function (PIXI_1) {
+                PIXI = PIXI_1;
+            },
+            function (U_1) {
+                U = U_1;
             }
         ],
         execute: function () {
             clearColor = new imgui_js_1.ImVec4(0.7, 0.9, 1, 1);
-            windowOpen = true;
-            text = "text";
             (function () {
                 if (document.readyState == "complete") {
                     main();
diff --git a/src/main.js.map b/src/main.js.map
index d10898e..c4ec491 100644
--- a/src/main.js.map
+++ b/src/main.js.map
@@ -1 +1 @@
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\ No newline at end of file
+{"version":3,"file":"main.js","sourceRoot":"","sources":["main.ts"],"names":[],"mappings":";;;;;;;;;;;;IASA,SAAe,IAAI;;YAEf,OAAO,CAAC,GAAG,CAAC,QAAQ,CAAC,CAAC;YACtB,MAAM,KAAK,CAAC,OAAO,EAAE,CAAC;YACtB,MAAM,CAAC,qBAAqB,CAAC,IAAI,CAAC,CAAC;QACvC,CAAC;KAAA;IAGD,SAAS,IAAI;QAET,OAAO,CAAC,GAAG,CAAC,QAAQ,CAAC,CAAC;QACtB,OAAO,CAAC,GAAG,CAAC,2CAA2C,EAAE,KAAK,CAAC,IAAI,CAAC,QAAQ,EAAE,CAAC,QAAQ,CAAC,CAAC;QAEzF,UAAU,CAAC,WAAW,EAAE,CAAC;QAEzB,IAAI,QAAQ,GAAG,EAAE,KAAK,EAAE,CAAC,EAAE,MAAM,EAAE,CAAC,EAAE,SAAS,EAAE,IAAI,EAAE,eAAe,EAAE,CAAC,CAAC,OAAO,CAAC,UAAU,CAAC,EAAE,CAAC;QAEhG,IAAI,GAAG,GAAsB,IAAI,IAAI,CAAC,WAAW,CAAC,QAAQ,CAAC,CAAC;QAE5D,MAAM,MAAM,GAAgB,QAAQ,CAAC,cAAc,CAAC,QAAQ,CAAC,IAAI,QAAQ,CAAC,IAAI,CAAC;QAC/E,MAAM,CAAC,WAAW,CAAC,GAAG,CAAC,IAAI,CAAC,CAAC;QAC7B,GAAG,CAAC,IAAI,CAAC,QAAQ,GAAG,CAAC,CAAC;QACtB,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,QAAQ,GAAG,UAAU,CAAC;QACrC,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,IAAI,GAAG,KAAK,CAAC;QAC5B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,KAAK,GAAG,KAAK,CAAC;QAC7B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,GAAG,GAAG,KAAK,CAAC;QAC3B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,MAAM,GAAG,KAAK,CAAC;QAC9B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,KAAK,GAAG,MAAM,CAAC;QAC9B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,MAAM,GAAG,MAAM,CAAC;QAE/B,UAAU,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC;QAErB,GAAG,CAAC,MAAM,CAAC,GAAG,CACV,CAAC,SAAiB,EAAE,EAAE;YAElB,MAAM,EAAE,GAAW,SAAS,GAAG,CAAC,GAAG,CAAC,IAAI,GAAG,IAAI,CAAC,QAAQ,CAAC,WAAW,CAAC,CAAC;YAEtE,GAAG,CAAC,MAAM,EAAE,CAAC;QACjB,CAAC,CACJ,CAAC;QAGF,IAAI,UAAU,GAAG;YAEb,GAAG,CAAC,QAAQ,CAAC,MAAM,CAAC,MAAM,CAAC,UAAU,EAAE,MAAM,CAAC,WAAW,CAAC,CAAC;QAC/D,CAAC,CAAC;QAEF,IAAI,EAAE,GAAkB,IAAI,IAAI,CAAC,QAAQ,EAAE,CAAC;QAC5C,EAAE,CAAC,SAAS,CAAC,QAAQ,CAAC,CAAC;QACvB,EAAE,CAAC,QAAQ,CAAC,GAAG,EAAE,GAAG,EAAE,GAAG,EAAE,GAAG,CAAC,CAAC;QAChC,EAAE,CAAC,OAAO,EAAE,CAAC;QAEb,IAAI,OAAO,GAAe,GAAG,EAAE,GAAG,KAAK,CAAC,gBAAgB,EAAE,CAAC,CAAC,CAAC,CAAC;QAE9D,MAAM,KAAK,GAAgB,IAAI,wBAAW,CAAC,GAAG,EAAE,GAAG,EAAE,UAAU,EAAE,CAAC,CAAC;QACnE,MAAM,MAAM,GAAgB,IAAI,wBAAW,CAAC,GAAG,EAAE,GAAG,EAAE,WAAW,EAAE,CAAC,CAAC;QACrE,MAAM,CAAC,CAAC,GAAG,GAAG,CAAC;QACf,MAAM,CAAC,CAAC,GAAG,GAAG,CAAC;QAEf,KAAK,CAAC,WAAW,CAAC,OAAO,CAAC,CAAC;QAC3B,MAAM,CAAC,WAAW,CAAC,OAAO,CAAC,CAAC;QAE5B,GAAG,CAAC,KAAK,CAAC,QAAQ,CAAC,KAAK,CAAC,CAAC;QAC1B,GAAG,CAAC,KAAK,CAAC,QAAQ,CAAC,EAAE,CAAC,CAAC;QACvB,GAAG,CAAC,KAAK,CAAC,QAAQ,CAAC,MAAM,CAAC,CAAC;QAE3B,MAAM,CAAC,QAAQ,GAAG,UAAU,CAAC;QAC7B,UAAU,EAAE,CAAC;IACjB,CAAC;IAED,SAAS,UAAU;QAEf,IAAI,IAAI,GAAW,MAAM,CAAC;QAC1B,OAAO,CAAC,WAAmB,EAAE,EAAE;YAE3B,KAAK,CAAC,gBAAgB,CAAC,IAAI,iBAAM,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;YACzC,KAAK,CAAC,iBAAiB,CAAC,IAAI,iBAAM,CAAC,GAAG,EAAE,GAAG,CAAC,EAAE,KAAK,CAAC,SAAS,CAAC,MAAM,CAAC,CAAC;YACtE,KAAK,CAAC,KAAK,CAAC,aAAa,CAAC,CAAC;YAC3B,IAAI,KAAK,CAAC,MAAM,CAAC,UAAU,CAAC,EAC5B;gBACI,IAAI,IAAI,GAAG,CAAC;aACf;YACD,KAAK,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;YACjB,KAAK,CAAC,GAAG,EAAE,CAAC;QAChB,CAAC,CAAC;IACN,CAAC;IAED,SAAS,WAAW;QAEhB,IAAI,IAAI,GAAU,EAAE,CAAC;QACrB,OAAO,CAAC,WAAmB,EAAE,EAAE;YAE3B,KAAK,CAAC,gBAAgB,CAAC,IAAI,iBAAM,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;YACzC,KAAK,CAAC,iBAAiB,CAAC,IAAI,iBAAM,CAAC,GAAG,EAAE,GAAG,CAAC,EAAE,KAAK,CAAC,SAAS,CAAC,MAAM,CAAC,CAAC;YACtE,KAAK,CAAC,KAAK,CAAC,eAAe,CAAC,CAAC;YAC7B,KAAK,CAAC,SAAS,CAAC,SAAS,EAAE,CAAC,CAAC,GAAG,IAAI,EAAE,EAAE,CAAC,IAAI,GAAG,CAAC,CAAC,CAAC;YACnD,KAAK,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;YACjB,KAAK,CAAC,GAAG,EAAE,CAAC;QAChB,CAAC,CAAC;IACN,CAAC;;;;;;;;;;;;;;;;;;;;YA5FK,UAAU,GAAU,IAAI,iBAAM,CAAC,GAAG,EAAE,GAAG,EAAE,CAAC,EAAE,CAAC,CAAC,CAAC;YA8FrD,CAAC;gBAEI,IAAI,QAAQ,CAAC,UAAU,IAAI,UAAU,EACrC;oBACI,IAAI,EAAE,CAAC;iBACV;qBAED;oBACI,MAAM,CAAC,MAAM,GAAG,IAAI,CAAC;iBACxB;YACL,CAAC,CAAC,EAAE,CAAC;QACN,CAAC"}
\ No newline at end of file
diff --git a/src/main.ts b/src/main.ts
index fcf1b3f..026aae6 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,8 +1,11 @@
-import * as ImGui_Impl from "../imgui-js/example/imgui_impl";
+import * as ImGui_Impl from "./imgui_impl";
+import { ImGuiWindow } from "./imgui_impl";
 import * as ImGui from "imgui-js";
 import { ImGuiIO } from "imgui-js"
 import { ImVec4 } from "imgui-js";
 import { ImVec2 } from "imgui-js";
+import * as PIXI from "pixi.js";
+import * as U from "./utils";
 
 async function main(): Promise<void>
 {
@@ -11,82 +14,98 @@
     window.requestAnimationFrame(init);
 }
 
+const clearColor:ImVec4 = new ImVec4(0.7, 0.9, 1, 1);
 function init(): void
 {
     console.log("init()");
     console.log("Total allocated space (uordblks) @ _init:", ImGui.bind.mallinfo().uordblks);
 
-    // Setup Dear ImGui binding
-    ImGui.IMGUI_CHECKVERSION();
-    ImGui.CreateContext();
+    ImGui_Impl.PrePIXIInit();
 
-    const io: ImGuiIO = ImGui.GetIO();
-    io.ConfigFlags |= ImGui.ConfigFlags.NavEnableKeyboard;  // Enable Keyboard Controls
+    let settings = { width: 1, height: 1, antialias: true, backgroundColor: U.vec2col(clearColor) };
 
-    // Setup style
-    ImGui.StyleColorsLight();
+    let app : PIXI.Application = new PIXI.Application(settings);
 
     const output: HTMLElement = document.getElementById("output") || document.body;
-    const canvas: HTMLCanvasElement = document.createElement("canvas");
-    output.appendChild(canvas);
-    canvas.tabIndex = 1;
-    canvas.style.position = "absolute";
-    canvas.style.left = "0px";
-    canvas.style.right = "0px";
-    canvas.style.top = "0px";
-    canvas.style.bottom = "0px";
-    canvas.style.width = "100%";
-    canvas.style.height = "100%";
-    ImGui_Impl.Init(canvas);
+    output.appendChild(app.view);
+    app.view.tabIndex = 1;
+    app.view.style.position = "absolute";
+    app.view.style.left = "0px";
+    app.view.style.right = "0px";
+    app.view.style.top = "0px";
+    app.view.style.bottom = "0px";
+    app.view.style.width = "100%";
+    app.view.style.height = "100%";
 
-    window.requestAnimationFrame(loop);
-}
+    ImGui_Impl.Init(app);
 
-const clearColor:ImVec4 = new ImVec4(0.7, 0.9, 1, 1);
-let windowOpen: boolean = true;
-let text: string = "text";
-function render(timeElapsed: number): void
-{
-    ImGui.SetNextWindowSize(new ImVec2(600, 400), ImGui.ImGuiCond.Always);
-    ImGui.Begin("Test Window", (_ = windowOpen) => windowOpen = _, 0); 
-    if (ImGui.Button("Add Text"))
+    app.ticker.add(
+        (deltaTime: number) =>
+        {
+            const dt: number = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+
+            app.render();
+        }
+    );
+
+
+    let resizeFunc = function()
     {
-        text += "A";
-    }
-    ImGui.Text(text);
-    ImGui.End();
+        app.renderer.resize(window.innerWidth, window.innerHeight);
+    };
+
+    let bg: PIXI.Graphics = new PIXI.Graphics();
+    bg.beginFill(0xFF0000);
+    bg.drawRect(100, 100, 300, 300);
+    bg.endFill();
+
+    let styleCb: () => void = () => { ImGui.StyleColorsLight(); };
+
+    const imgui: ImGuiWindow = new ImGuiWindow(512, 512, makeUpdate());
+    const imgui2: ImGuiWindow = new ImGuiWindow(512, 512, makeUpdate2());
+    imgui2.x = 200;
+    imgui2.y = 400;
+
+    imgui.withContext(styleCb);
+    imgui2.withContext(styleCb);
+    
+    app.stage.addChild(imgui);
+    app.stage.addChild(bg);
+    app.stage.addChild(imgui2);
+
+    window.onresize = resizeFunc;
+    resizeFunc();
 }
 
-
-function loop(timeElapsed: number): void
+function makeUpdate(): (timeElapsed: number) => void
 {
-    ImGui_Impl.NewFrame(timeElapsed);
-    ImGui.NewFrame();
+    let text: string = "text";
+    return (timeElapsed: number) =>
+    {
+        ImGui.SetNextWindowPos(new ImVec2(0, 0));
+        ImGui.SetNextWindowSize(new ImVec2(500, 500), ImGui.ImGuiCond.Always);
+        ImGui.Begin("Test Window"); 
+        if (ImGui.Button("Add Text"))
+        {
+            text += "A";
+        }
+        ImGui.Text(text);
+        ImGui.End();
+    };
+}
 
-    render(timeElapsed);
-
-    ImGui.EndFrame();
-
-    // Rendering
-    ImGui.Render();
-    const gl: WebGLRenderingContext | null = ImGui_Impl.gl;
-    if (gl) {
-        gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
-        gl.clearColor(clearColor.x, clearColor.y, clearColor.z, clearColor.w);
-        gl.clear(gl.COLOR_BUFFER_BIT);
-        //gl.useProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound
-    }
-
-    const ctx: CanvasRenderingContext2D | null = ImGui_Impl.ctx;
-    if (ctx) {
-        // ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-        ctx.fillStyle = `rgba(${clearColor.x * 0xff}, ${clearColor.y * 0xff}, ${clearColor.z * 0xff}, ${clearColor.w})`;
-        ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-    }
-
-    ImGui_Impl.RenderDrawData(ImGui.GetDrawData());
-
-    window.requestAnimationFrame(loop);
+function makeUpdate2(): (timeElapsed: number) => void
+{
+    let text:string = "";
+    return (timeElapsed: number) =>
+    {
+        ImGui.SetNextWindowPos(new ImVec2(0, 0));
+        ImGui.SetNextWindowSize(new ImVec2(500, 500), ImGui.ImGuiCond.Always);
+        ImGui.Begin("Test Window 2"); 
+        ImGui.InputText("Input: ", (_ = text) => text = _);
+        ImGui.Text(text);
+        ImGui.End();
+    };
 }
 
 (function()
diff --git a/src/utils.js b/src/utils.js
new file mode 100644
index 0000000..c91e062
--- /dev/null
+++ b/src/utils.js
@@ -0,0 +1,20 @@
+System.register([], function (exports_1, context_1) {
+    "use strict";
+    var __moduleName = context_1 && context_1.id;
+    function fromConstructor(constr) {
+        return constr;
+    }
+    exports_1("fromConstructor", fromConstructor);
+    function vec2col(v) {
+        return (((v.x * 255) & 0xFF) << 16) +
+            (((v.y * 255) & 0xFF) << 8) +
+            (((v.z * 255) & 0xFF) << 0);
+    }
+    exports_1("vec2col", vec2col);
+    return {
+        setters: [],
+        execute: function () {
+        }
+    };
+});
+//# sourceMappingURL=utils.js.map
\ No newline at end of file

diff --git a/.gitmodules b/.gitmodules
index d6b45d7..fc2be7a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,7 @@
 [submodule "emsdk"]
 	path = emsdk
 	url = https://github.com/emscripten-core/emsdk.git
+	ignore = untracked
+[submodule "pixi.js"]
+	path = pixi.js
+	url = https://git.mhack.io/git/mark/pixi.js.git
diff --git a/imgui-js b/imgui-js
index 9f694ef..9536eca 160000
--- a/imgui-js
+++ b/imgui-js
@@ -1 +1 @@
-Subproject commit 9f694ef7e8e7251c32f7811ba39938951a12097a
+Subproject commit 9536ecad287eb76812087cd3fee1aaacb448c027
diff --git a/indexdev.html b/indexdev.html
index 2f6c3b3..3d27479 100644
--- a/indexdev.html
+++ b/indexdev.html
@@ -2,22 +2,16 @@
     <head>
         <title>7GUI</title>
         <script src="node_modules/systemjs/dist/system.js"></script>
-        <!--
-        <script type="systemjs-importmap">
-            {
-                "imports": {
-                    "imgui-js/example/imgui_impl": "imgui-js/dist/imgui_impl.umd.js"
-                }
-            }
-        </script>
-        -->
         <script>
             System.config({
                 map: {
-                    "imgui-js": "./imgui-js"
+                    "imgui-js": "./imgui-js",
+                    "pixi.js": "./node_modules/pixi.js"
                 },
                 packages: {
-                    "imgui-js": { main: "imgui.js", }
+                    "imgui-js": { main: "imgui.js" },
+                    "pixi.js": { main: "dist/pixi.js" },
+                    "./": { map: { "src/utils": "./src/utils.js", "src/imgui_impl": "./src/imgui_impl.js" } }
                 }
             });
             System.import("./src/main.js");
diff --git a/package-lock.json b/package-lock.json
index ed52494..8bda7e5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,16 +4,34 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@pixi/constants": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/constants/-/constants-5.1.0.tgz",
+      "integrity": "sha512-86cogDvjF9yNvmxeizwkIhA0Kl2z3gUSWMf2daYx903dzyje7fwkzRrKLnqDUn6vSAxRXiska0DMJhwYsIC29w=="
+    },
+    "@pixi/math": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/math/-/math-5.1.0.tgz",
+      "integrity": "sha512-Vf9W4SgYRRQMdSq8tFViKKKGCU3iklf0RDzd+wzp4gezOxe3m0PLB7XKwvVrP1hRjUh49zIAL9JBpYREPS1EMw=="
+    },
+    "@pixi/polyfill": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/polyfill/-/polyfill-5.1.0.tgz",
+      "integrity": "sha512-8M3nYCO0a599fsdLW7wv9SBYriMqS1QckKAkRuN2JualRuK/GjxZjm5Vcbcwc1gGONRUKZroH12CuPyTcU2HnQ==",
+      "requires": {
+        "es6-promise-polyfill": "^1.2.0",
+        "object-assign": "^4.1.1"
+      }
+    },
     "@types/estree": {
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-          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
-          "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
-          "dev": true,
-          "requires": {
-            "safe-buffer": "~5.1.0"
-          }
-        }
       }
     },
     "readdirp": {
@@ -4698,9 +5167,9 @@
       "dev": true
     },
     "resolve": {
-      "version": "1.11.0",
-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.11.0.tgz",
-      "integrity": "sha512-WL2pBDjqT6pGUNSUzMw00o4T7If+z4H2x3Gz893WoUQ5KW8Vr9txp00ykiP16VBaZF5+j/OcXJHZ9+PCvdiDKw==",
+      "version": "1.11.1",
+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.11.1.tgz",
+      "integrity": "sha512-vIpgF6wfuJOZI7KKKSP+HmiKggadPQAdsp5HiC1mvqnfp0gF1vdwgBWZIdrVft9pgqoMFQN+R7BSWZiBxx+BBw==",
       "dev": true,
       "requires": {
         "path-parse": "^1.0.6"
@@ -4712,6 +5181,15 @@
       "integrity": "sha1-LGN/53yJOv0qZj/iGqkIAGjiBSo=",
       "dev": true
     },
+    "resource-loader": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/resource-loader/-/resource-loader-3.0.1.tgz",
+      "integrity": "sha512-fBuCRbEHdLCI1eglzQhUv9Rrdcmqkydr1r6uHE2cYHvRBrcLXeSmbE/qI/urFt8rPr/IGxir3BUwM5kUK8XoyA==",
+      "requires": {
+        "mini-signals": "^1.2.0",
+        "parse-uri": "^1.0.0"
+      }
+    },
     "ret": {
       "version": "0.1.15",
       "resolved": "https://registry.npmjs.org/ret/-/ret-0.1.15.tgz",
@@ -4729,33 +5207,26 @@
       }
     },
     "rollup": {
-      "version": "1.15.6",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.15.6.tgz",
-      "integrity": "sha512-s3Vn3QJQ5YVFfIG4nXoG9VdL1I37IZsft+4ZyeBhxE0df1kCFz9e+4bEAbR4mKH3pvBO9e9xjdxWPhhIp0r9ow==",
+      "version": "1.17.0",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.17.0.tgz",
+      "integrity": "sha512-k/j1m0NIsI4SYgCJR4MWPstGJOWfJyd6gycKoMhyoKPVXxm+L49XtbUwZyFsrSU2YXsOkM4u1ll9CS/ZgJBUpw==",
       "requires": {
         "@types/estree": "0.0.39",
-        "@types/node": "^12.0.8",
-        "acorn": "^6.1.1"
-      },
-      "dependencies": {
-        "@types/node": {
-          "version": "12.0.8",
-          "resolved": "https://registry.npmjs.org/@types/node/-/node-12.0.8.tgz",
-          "integrity": "sha512-b8bbUOTwzIY3V5vDTY1fIJ+ePKDUBqt2hC2woVGotdQQhG/2Sh62HOKHrT7ab+VerXAcPyAiTEipPu/FsreUtg=="
-        }
+        "@types/node": "^12.6.2",
+        "acorn": "^6.2.0"
       }
     },
     "rollup-plugin-commonjs": {
-      "version": "10.0.0",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.0.tgz",
-      "integrity": "sha512-B8MoX5GRpj3kW4+YaFO/di2JsZkBxNjVmZ9LWjUoTAjq8N9wc7HObMXPsrvolVV9JXVtYSscflXM14A19dXPNQ==",
+      "version": "10.0.1",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.1.tgz",
+      "integrity": "sha512-x0PcCVdEc4J8igv1qe2vttz8JKAKcTs3wfIA3L8xEty3VzxgORLrzZrNWaVMc+pBC4U3aDOb9BnWLAQ8J11vkA==",
       "dev": true,
       "requires": {
-        "estree-walker": "^0.6.0",
+        "estree-walker": "^0.6.1",
         "is-reference": "^1.1.2",
         "magic-string": "^0.25.2",
-        "resolve": "^1.10.1",
-        "rollup-pluginutils": "^2.7.0"
+        "resolve": "^1.11.0",
+        "rollup-pluginutils": "^2.8.1"
       }
     },
     "rollup-plugin-node-builtins": {
@@ -4771,16 +5242,16 @@
       }
     },
     "rollup-plugin-node-resolve": {
-      "version": "5.0.3",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.0.3.tgz",
-      "integrity": "sha512-Mhhmf0x493xgUPEsRELnU1VM+4+WO82knWkAbZ0d2DvZQZJMbhzyQK/hqtpVscoRru1EqlK3TM1kK9ro469wPw==",
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.2.0.tgz",
+      "integrity": "sha512-jUlyaDXts7TW2CqQ4GaO5VJ4PwwaV8VUGA7+km3n6k6xtOEacf61u0VXwN80phY/evMcaS+9eIeJ9MOyDxt5Zw==",
       "dev": true,
       "requires": {
         "@types/resolve": "0.0.8",
         "builtin-modules": "^3.1.0",
         "is-module": "^1.0.0",
-        "resolve": "^1.11.0",
-        "rollup-pluginutils": "^2.8.0"
+        "resolve": "^1.11.1",
+        "rollup-pluginutils": "^2.8.1"
       }
     },
     "rollup-plugin-typescript2": {
@@ -4846,35 +5317,6 @@
       "integrity": "sha1-uYSPJdbPNjMwc+ye+IVtQvEjPlI=",
       "dev": true
     },
-    "send": {
-      "version": "0.17.1",
-      "resolved": "https://registry.npmjs.org/send/-/send-0.17.1.tgz",
-      "integrity": "sha512-BsVKsiGcQMFwT8UxypobUKyv7irCNRHk1T0G680vk88yf6LBByGcZJOTJCrTP2xVN6yI+XjPJcNuE3V4fT9sAg==",
-      "dev": true,
-      "requires": {
-        "debug": "2.6.9",
-        "depd": "~1.1.2",
-        "destroy": "~1.0.4",
-        "encodeurl": "~1.0.2",
-        "escape-html": "~1.0.3",
-        "etag": "~1.8.1",
-        "fresh": "0.5.2",
-        "http-errors": "~1.7.2",
-        "mime": "1.6.0",
-        "ms": "2.1.1",
-        "on-finished": "~2.3.0",
-        "range-parser": "~1.2.1",
-        "statuses": "~1.5.0"
-      },
-      "dependencies": {
-        "ms": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
-          "dev": true
-        }
-      }
-    },
     "serve-index": {
       "version": "1.9.1",
       "resolved": "https://registry.npmjs.org/serve-index/-/serve-index-1.9.1.tgz",
@@ -4902,6 +5344,12 @@
             "statuses": ">= 1.4.0 < 2"
           }
         },
+        "inherits": {
+          "version": "2.0.3",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+          "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+          "dev": true
+        },
         "setprototypeof": {
           "version": "1.1.0",
           "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
@@ -4911,9 +5359,9 @@
       }
     },
     "set-value": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.0.tgz",
-      "integrity": "sha512-hw0yxk9GT/Hr5yJEYnHNKYXkIA8mVJgd9ditYZCe16ZczcaELYYcfvaXesNACk2O8O0nTiPQcQhGUQj8JLzeeg==",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.1.tgz",
+      "integrity": "sha512-JxHc1weCN68wRY0fhCoXpyK55m/XPHafOmK4UWD7m2CI14GMcFypt4w/0+NV5f/ZMby2F6S2wwA7fgynh9gWSw==",
       "dev": true,
       "requires": {
         "extend-shallow": "^2.0.1",
@@ -5082,9 +5530,9 @@
       "dev": true
     },
     "sourcemap-codec": {
-      "version": "1.4.4",
-      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.4.tgz",
-      "integrity": "sha512-CYAPYdBu34781kLHkaW3m6b/uUSyMOC2R61gcYMWooeuaGtjof86ZA/8T+qVPPt7np1085CR9hmMGrySwEc8Xg==",
+      "version": "1.4.6",
+      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.6.tgz",
+      "integrity": "sha512-1ZooVLYFxC448piVLBbtOxFcXwnymH9oUF8nRd3CuYDVvkRBxRl6pB4Mtas5a4drtL+E8LDgFkQNcgIw6tc8Hg==",
       "dev": true
     },
     "split": {
@@ -5148,10 +5596,13 @@
       "dev": true
     },
     "string_decoder": {
-      "version": "0.10.31",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
-      "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
-      "dev": true
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "~5.1.0"
+      }
     },
     "systemjs": {
       "version": "0.21.6",
@@ -5231,44 +5682,21 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.5.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.2.tgz",
-      "integrity": "sha512-7KxJovlYhTX5RaRbUdkAXN1KUZ8PwWlTzQdHV6xNqvuFOs7+WBo10TQUqT19Q/Jz2hk5v9TQDIhyLhhJY4p5AA==",
+      "version": "3.5.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.3.tgz",
+      "integrity": "sha512-ACzBtm/PhXBDId6a6sDJfroT2pOWt/oOnk4/dElG5G33ZL776N3Y6/6bKZJBFpd+b05F3Ct9qDjMeJmRWtE2/g==",
       "dev": true
     },
     "union-value": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz",
-      "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",
+      "integrity": "sha512-tJfXmxMeWYnczCVs7XAEvIV7ieppALdyepWMkHkwciRpZraG/xwT+s2JN8+pr1+8jCRf80FFzvr+MpQeeoF4Xg==",
       "dev": true,
       "requires": {
         "arr-union": "^3.1.0",
         "get-value": "^2.0.6",
         "is-extendable": "^0.1.1",
-        "set-value": "^0.4.3"
-      },
-      "dependencies": {
-        "extend-shallow": {
-          "version": "2.0.1",
-          "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
-          "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
-          "dev": true,
-          "requires": {
-            "is-extendable": "^0.1.0"
-          }
-        },
-        "set-value": {
-          "version": "0.4.3",
-          "resolved": "https://registry.npmjs.org/set-value/-/set-value-0.4.3.tgz",
-          "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=",
-          "dev": true,
-          "requires": {
-            "extend-shallow": "^2.0.1",
-            "is-extendable": "^0.1.1",
-            "is-plain-object": "^2.0.1",
-            "to-object-path": "^0.3.0"
-          }
-        }
+        "set-value": "^2.0.1"
       }
     },
     "universalify": {
@@ -5341,6 +5769,15 @@
       "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
       "dev": true
     },
+    "url": {
+      "version": "0.11.0",
+      "resolved": "https://registry.npmjs.org/url/-/url-0.11.0.tgz",
+      "integrity": "sha1-ODjpfPxgUh63PFJajlW/3Z4uKPE=",
+      "requires": {
+        "punycode": "1.3.2",
+        "querystring": "0.2.0"
+      }
+    },
     "use": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
@@ -5372,12 +5809,13 @@
       "dev": true
     },
     "websocket-driver": {
-      "version": "0.7.0",
-      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.0.tgz",
-      "integrity": "sha1-DK+dLXVdk67gSdS90NP+LMoqJOs=",
+      "version": "0.7.3",
+      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.3.tgz",
+      "integrity": "sha512-bpxWlvbbB459Mlipc5GBzzZwhoZgGEZLuqPaR0INBGnPAY1vdBX6hPnoFXiw+3yWxDuHyQjO2oXTMyS8A5haFg==",
       "dev": true,
       "requires": {
-        "http-parser-js": ">=0.4.0",
+        "http-parser-js": ">=0.4.0 <0.4.11",
+        "safe-buffer": ">=5.1.0",
         "websocket-extensions": ">=0.1.1"
       }
     },
diff --git a/package.json b/package.json
index 07cf1ea..8aafc46 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,9 @@
     "build": "tsc",
     "rollup": "rollup -c",
     "watch": "npx live-server --open=index.html --watch='./*.html,./*.js'",
-    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./*.js'"
+    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./src/*.js'",
+    "pixi": "cd pixi.js && npm run local && cd .. && npm run pixi:install",
+    "pixi:install": "rm -rf node_modules/pixi.js && rm package-lock.json"
   },
   "repository": {
     "type": "git",
@@ -17,13 +19,15 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@types/systemjs": "^0.20.6",
+    "@types/webgl2": "0.0.5",
     "imgui-js": "file:./imgui-js",
+    "pixi.js": "file:pixi.js/bundles/pixi.js/pixi.js-5.1.4.tgz",
     "rollup": "^1.15.6",
     "systemjs": "^0.21.5"
   },
   "devDependencies": {
     "@types/node": "^12.0.0",
+    "@types/systemjs": "^0.20.6",
     "live-server": "^1.2.1",
     "rollup-plugin-commonjs": "^10.0.0",
     "rollup-plugin-node-builtins": "^2.1.2",
diff --git a/pixi.js b/pixi.js
new file mode 160000
index 0000000..1b78731
--- /dev/null
+++ b/pixi.js
@@ -0,0 +1 @@
+Subproject commit 1b78731948b57c635a2e65444c387eed31ec7428
diff --git a/session b/session
index bbf5582..06b9a8d 100644
--- a/session
+++ b/session
@@ -1,322 +1,62 @@
 let SessionLoad = 1
 if &cp | set nocp | endif
-let s:cpo_save=&cpo
-set cpo&vim
-imap <Nul> <C-Space>
-inoremap <expr> <Up> pumvisible() ? "\" : "\<Up>"
-inoremap <expr> <S-Tab> pumvisible() ? "\" : "\<S-Tab>"
-inoremap <expr> <Down> pumvisible() ? "\" : "\<Down>"
-nnoremap <silent>  :TmuxNavigateLeft
-nnoremap <silent> <NL> :TmuxNavigateDown
-nnoremap <silent>  :TmuxNavigateUp
-nnoremap <silent>  :TmuxNavigateRight
-nnoremap <silent>  :TmuxNavigatePrevious
-nnoremap \d :YcmShowDetailedDiagnostic
-vnoremap <silent> \c :call CopyMarkWithCursor("<", ">")
-nnoremap <silent> \c :set opfunc=OpSysCopyMarkg@
-vmap gx <Plug>NetrwBrowseXVis
-nmap gx <Plug>NetrwBrowseX
-vnoremap <silent> <Plug>NetrwBrowseXVis :call netrw#BrowseXVis()
-nnoremap <silent> <Plug>NetrwBrowseX :call netrw#BrowseX(expand((exists("g:netrw_gx")? g:netrw_gx : '<cfile>')),netrw#CheckIfRemote())
-inoremap <expr> 	 pumvisible() ? "\" : "\	"
-let &cpo=s:cpo_save
-unlet s:cpo_save
-set autoindent
-set backspace=indent,eol,start
-set completefunc=youcompleteme#CompleteFunc
-set completeopt=preview,menuone
-set cpoptions=aAceFsB
-set fileencodings=ucs-bom,utf-8,default,latin1
-set fillchars=vert:|,fold:-,vert:│
-set helplang=en
-set hidden
-set include=import_s.\\zs[^'\"]*\\ze
-set includeexpr=TsIncludeExpr(v:fname)
-set nomodeline
-set path=.,/usr/include,,,./node_modules/**,node_modules/**
-set ruler
-set runtimepath=~/.vim,~/.vim/bundle/JustDo,~/.vim/bundle/YouCompleteMe,~/.vim/bundle/vim-easymotion,~/.vim/bundle/vim-tmux-navigator,~/.vim/bundle/yats.vim,/var/lib/vim/addons,/usr/share/vim/vimfiles,/usr/share/vim/vim74,/usr/share/vim/vimfiles/after,/var/lib/vim/addons/after,~/.vim/after
-set sessionoptions=blank,buffers,folds,help,options,tabpages,winsize,sesdir
-set shortmess=filnxtToOc
-set suffixes=.bak,~,.swp,.o,.info,.aux,.log,.dvi,.bbl,.blg,.brf,.cb,.ind,.idx,.ilg,.inx,.out,.toc
-set suffixesadd=.ts
 let s:so_save = &so | let s:siso_save = &siso | set so=0 siso=0
 let v:this_session=expand("<sfile>:p")
 silent only
+silent tabonly
 exe "cd " . escape(expand("<sfile>:p:h"), ' ')
 if expand('%') == '' && !&modified && line('$') <= 1 && getline(1) == ''
   let s:wipebuf = bufnr('%')
 endif
 set shortmess=aoO
+argglobal
+%argdel
+edit src/imgui_impl.ts
+set splitbelow splitright
+set nosplitbelow
+set nosplitright
+wincmd t
+set winminheight=0
+set winheight=1
+set winminwidth=0
+set winwidth=1
+argglobal
+let s:l = 1 - ((0 * winheight(0) + 21) / 42)
+if s:l < 1 | let s:l = 1 | endif
+exe s:l
+normal! zt
+1
+normal! 0
+tabnext 1
+badd +0 src/imgui_impl.ts
 badd +12 rollup.config.js
 badd +7 imgui-js/rollup.config.js
-badd +7 imgui-js/tsconfig.json
-badd +26 tsconfig.json
+badd +4 imgui-js/tsconfig.json
+badd +12 tsconfig.json
 badd +1 index.js
 badd +3904 imgui-js/imgui.ts
-badd +39 src/main.ts
+badd +80 src/main.ts
 badd +52 imgui-js/example/main.ts
-badd +8 package.json
+badd +34 package.json
 badd +1 imgui-js/dist/imgui.d.ts
 badd +1 imgui-js/bind-imgui.js
 badd +1 imgui-js/example/imgui_impl.js
 badd +2 imgui-js/example/imgui_impl.ts
 badd +295 imgui-js/imgui_demo.ts
 badd +4 index.html
-badd +14 indexdev.html
+badd +4 indexdev.html
 badd +6 imgui-js/example/index.html
-badd +2 imgui-js/example/system.config.js
+badd +6 imgui-js/example/system.config.js
 badd +40 imgui-js/package.json
-badd +201 node_modules/systemjs/dist/system.js
-argglobal
-silent! argdel *
-edit package.json
-set splitbelow splitright
-wincmd _ | wincmd |
-split
-1wincmd k
-wincmd w
-set nosplitbelow
-set nosplitright
-wincmd t
-set winheight=1 winwidth=1
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-argglobal
-enew
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=wipe
-setlocal buflisted
-setlocal buftype=nofile
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=s1:/*,mb:*,ex:*/,://,b:#,:%,:XCOMM,n:>,fb:-
-setlocal commentstring=/*%s*/
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != ''
-setlocal filetype=
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=tcq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=
-setlocal indentkeys=0{,0},:,0#,!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal nomodifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal previewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal noswapfile
-setlocal synmaxcol=3000
-if &syntax != ''
-setlocal syntax=
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal winfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-wincmd w
-argglobal
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=
-setlocal buflisted
-setlocal buftype=
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=
-setlocal commentstring=
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != 'json'
-setlocal filetype=json
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=cq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=GetJSONIndent()
-setlocal indentkeys=0{,0},0),0[,0],!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal modifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal nopreviewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal swapfile
-setlocal synmaxcol=3000
-if &syntax != 'json'
-setlocal syntax=json
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal nowinfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-silent! normal! zE
-let s:l = 23 - ((19 * winheight(0) + 15) / 31)
-if s:l < 1 | let s:l = 1 | endif
-exe s:l
-normal! zt
-23
-normal! 024|
-wincmd w
-2wincmd w
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-tabnext 1
-if exists('s:wipebuf')
+badd +1 node_modules/systemjs/dist/system.js
+badd +1 src/main.js
+badd +1 imgui-js/example/main.js
+if exists('s:wipebuf') && len(win_findbuf(s:wipebuf)) == 0
   silent exe 'bwipe ' . s:wipebuf
 endif
 unlet! s:wipebuf
 set winheight=1 winwidth=20 shortmess=filnxtToOc
+set winminheight=1 winminwidth=1
 let s:sx = expand("<sfile>:p:r")."x.vim"
 if file_readable(s:sx)
   exe "source " . fnameescape(s:sx)
diff --git a/src/imgui_impl.js b/src/imgui_impl.js
new file mode 100644
index 0000000..416e4b2
--- /dev/null
+++ b/src/imgui_impl.js
@@ -0,0 +1,736 @@
+System.register(["imgui-js", "pixi.js", "./utils"], function (exports_1, context_1) {
+    "use strict";
+    var ImGui, PIXI, U, clipboard_text, contexts, contextIOs, isFirstWindow, ImGuiImplInternalRenderer, gl, app, ImGuiWindowLayer, ImGuiWindow, canvas, g_ShaderHandle, g_VertHandle, g_FragHandle, g_AttribLocationTex, g_AttribLocationProjMtx, g_AttribLocationPosition, g_AttribLocationUV, g_AttribLocationColor, g_VaoHandle, g_VboHandle, g_ElementsHandle, g_FontTexture, mouse_button_map;
+    var __moduleName = context_1 && context_1.id;
+    function document_on_copy(event) {
+        if (event.clipboardData) {
+            event.clipboardData.setData("text/plain", clipboard_text);
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function document_on_cut(event) {
+        if (event.clipboardData) {
+            event.clipboardData.setData("text/plain", clipboard_text);
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function document_on_paste(event) {
+        if (event.clipboardData) {
+            clipboard_text = event.clipboardData.getData("text/plain");
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function window_on_gamepadconnected(event /* GamepadEvent */) {
+        console.log("Gamepad connected at index %d: %s. %d buttons, %d axes.", event.gamepad.index, event.gamepad.id, event.gamepad.buttons.length, event.gamepad.axes.length);
+    }
+    function window_on_gamepaddisconnected(event /* GamepadEvent */) {
+        console.log("Gamepad disconnected at index %d: %s.", event.gamepad.index, event.gamepad.id);
+    }
+    function canvas_on_blur(event) {
+        for (var io of contextIOs) {
+            io.KeyCtrl = false;
+            io.KeyShift = false;
+            io.KeyAlt = false;
+            io.KeySuper = false;
+            for (let i = 0; i < io.KeysDown.length; ++i) {
+                io.KeysDown[i] = false;
+            }
+            for (let i = 0; i < io.MouseDown.length; ++i) {
+                io.MouseDown[i] = false;
+            }
+        }
+    }
+    function canvas_on_keydown(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.KeyCtrl = event.ctrlKey;
+            io.KeyShift = event.shiftKey;
+            io.KeyAlt = event.altKey;
+            io.KeySuper = event.metaKey;
+            ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+            io.KeysDown[event.keyCode] = true;
+            // forward to the keypress event
+            if ( /*io.WantCaptureKeyboard ||*/event.key === "Tab") {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_keyup(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.KeyCtrl = event.ctrlKey;
+            io.KeyShift = event.shiftKey;
+            io.KeyAlt = event.altKey;
+            io.KeySuper = event.metaKey;
+            ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+            io.KeysDown[event.keyCode] = false;
+            if (io.WantCaptureKeyboard) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_keypress(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.AddInputCharacter(event.charCode);
+            if (io.WantCaptureKeyboard) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_contextmenu(event) {
+        for (var io of contextIOs) {
+            if (io.WantCaptureMouse) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_wheel(event) {
+        for (var io of contextIOs) {
+            let scale = 1.0;
+            switch (event.deltaMode) {
+                case event.DOM_DELTA_PIXEL:
+                    scale = 0.01;
+                    break;
+                case event.DOM_DELTA_LINE:
+                    scale = 0.2;
+                    break;
+                case event.DOM_DELTA_PAGE:
+                    scale = 1.0;
+                    break;
+            }
+            io.MouseWheelH = event.deltaX * scale;
+            io.MouseWheel = -event.deltaY * scale; // Mouse wheel: 1 unit scrolls about 5 lines text.
+            if (io.WantCaptureMouse) {
+                event.preventDefault();
+            }
+        }
+    }
+    function PrePIXIInit() {
+        PIXI.Renderer.registerPlugin("imgui_renderer", U.fromConstructor(ImGuiImplInternalRenderer));
+    }
+    exports_1("PrePIXIInit", PrePIXIInit);
+    function Init(_app) {
+        // Setup Dear ImGui binding
+        ImGui.IMGUI_CHECKVERSION();
+        if (typeof (document) !== "undefined") {
+            document.body.addEventListener("copy", document_on_copy);
+            document.body.addEventListener("cut", document_on_cut);
+            document.body.addEventListener("paste", document_on_paste);
+        }
+        if (typeof (window) !== "undefined") {
+            window.addEventListener("gamepadconnected", window_on_gamepadconnected);
+            window.addEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+        }
+        app = _app;
+        gl = app.renderer.gl;
+        canvas = app.view;
+        gl.getExtension("EXT_color_buffer_float");
+        if (canvas !== null) {
+            canvas.style.touchAction = "none"; // Disable browser handling of all panning and zooming gestures.
+            canvas.addEventListener("blur", canvas_on_blur);
+            canvas.addEventListener("keydown", canvas_on_keydown);
+            canvas.addEventListener("keyup", canvas_on_keyup);
+            canvas.addEventListener("keypress", canvas_on_keypress);
+            canvas.addEventListener("contextmenu", canvas_on_contextmenu);
+            canvas.addEventListener("wheel", canvas_on_wheel);
+        }
+        CreateDeviceObjects();
+    }
+    exports_1("Init", Init);
+    function Shutdown() {
+        DestroyDeviceObjects();
+        if (canvas !== null) {
+            canvas.removeEventListener("blur", canvas_on_blur);
+            canvas.removeEventListener("keydown", canvas_on_keydown);
+            canvas.removeEventListener("keyup", canvas_on_keyup);
+            canvas.removeEventListener("keypress", canvas_on_keypress);
+            canvas.removeEventListener("contextmenu", canvas_on_contextmenu);
+            canvas.removeEventListener("wheel", canvas_on_wheel);
+        }
+        app = null;
+        canvas = null;
+        if (typeof (window) !== "undefined") {
+            window.removeEventListener("gamepadconnected", window_on_gamepadconnected);
+            window.removeEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+        }
+        if (typeof (document) !== "undefined") {
+            document.body.removeEventListener("copy", document_on_copy);
+            document.body.removeEventListener("cut", document_on_cut);
+            document.body.removeEventListener("paste", document_on_paste);
+        }
+    }
+    exports_1("Shutdown", Shutdown);
+    function CreateFontsTexture() {
+        const io = ImGui.GetIO();
+        // Backup GL state
+        const last_texture = gl && gl.getParameter(gl.TEXTURE_BINDING_2D);
+        // Build texture atlas
+        // const width: number = 256;
+        // const height: number = 256;
+        // const pixels: Uint8Array = new Uint8Array(4 * width * height).fill(0xff);
+        const { width, height, pixels } = io.Fonts.GetTexDataAsRGBA32(); // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+        // console.log(`font texture ${width} x ${height} @ ${pixels.length}`);
+        // Upload texture to graphics system
+        g_FontTexture = gl && gl.createTexture();
+        gl && gl.bindTexture(gl.TEXTURE_2D, g_FontTexture);
+        gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+        gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+        // gl && gl.pixelStorei(gl.UNPACK_ROW_LENGTH); // WebGL2
+        gl && gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+        // Store our identifier
+        io.Fonts.TexID = g_FontTexture || { foo: "bar" };
+        // console.log("font texture id", g_FontTexture);
+        // Restore modified GL state
+        gl && last_texture && gl.bindTexture(gl.TEXTURE_2D, last_texture);
+    }
+    function DestroyFontsTexture() {
+        const io = ImGui.GetIO();
+        io.Fonts.TexID = null;
+        gl && gl.deleteTexture(g_FontTexture);
+        g_FontTexture = null;
+    }
+    function CreateDeviceObjects() {
+        const vertex_shader = [
+            "#version 300 es",
+            "uniform mat4 ProjMtx;",
+            "in vec2 Position;",
+            "in vec2 UV;",
+            "in vec4 Color;",
+            "out vec2 Frag_UV;",
+            "out vec4 Frag_Color;",
+            "void main() {",
+            "	Frag_UV = UV;",
+            "	Frag_Color = Color;",
+            "	gl_Position = ProjMtx * vec4(Position.xy,0,1);",
+            "}",
+        ];
+        const fragment_shader = [
+            "#version 300 es",
+            "precision mediump float;",
+            "uniform sampler2D Texture;",
+            "in vec2 Frag_UV;",
+            "in vec4 Frag_Color;",
+            "out vec4 OutColor;",
+            "void main() {",
+            "	OutColor = Frag_Color * texture(Texture, Frag_UV);",
+            "}",
+        ];
+        g_ShaderHandle = gl && gl.createProgram();
+        g_VertHandle = gl && gl.createShader(gl.VERTEX_SHADER);
+        g_FragHandle = gl && gl.createShader(gl.FRAGMENT_SHADER);
+        gl && gl.shaderSource(g_VertHandle, vertex_shader.join("\n"));
+        gl && gl.shaderSource(g_FragHandle, fragment_shader.join("\n"));
+        gl && gl.compileShader(g_VertHandle);
+        gl && gl.compileShader(g_FragHandle);
+        gl && gl.attachShader(g_ShaderHandle, g_VertHandle);
+        gl && gl.attachShader(g_ShaderHandle, g_FragHandle);
+        gl && gl.linkProgram(g_ShaderHandle);
+        g_AttribLocationTex = gl && gl.getUniformLocation(g_ShaderHandle, "Texture");
+        g_AttribLocationProjMtx = gl && gl.getUniformLocation(g_ShaderHandle, "ProjMtx");
+        g_AttribLocationPosition = gl && gl.getAttribLocation(g_ShaderHandle, "Position") || 0;
+        g_AttribLocationUV = gl && gl.getAttribLocation(g_ShaderHandle, "UV") || 0;
+        g_AttribLocationColor = gl && gl.getAttribLocation(g_ShaderHandle, "Color") || 0;
+        g_VaoHandle = gl && gl.createVertexArray();
+        g_VboHandle = gl && gl.createBuffer();
+        g_ElementsHandle = gl && gl.createBuffer();
+    }
+    function DestroyDeviceObjects() {
+        DestroyFontsTexture();
+        gl && gl.deleteVertexArray(g_VaoHandle);
+        g_VaoHandle = null;
+        gl && gl.deleteBuffer(g_VboHandle);
+        g_VboHandle = null;
+        gl && gl.deleteBuffer(g_ElementsHandle);
+        g_ElementsHandle = null;
+        g_AttribLocationTex = null;
+        g_AttribLocationProjMtx = null;
+        g_AttribLocationPosition = -1;
+        g_AttribLocationUV = -1;
+        g_AttribLocationColor = -1;
+        gl && gl.deleteProgram(g_ShaderHandle);
+        g_ShaderHandle = null;
+        gl && gl.deleteShader(g_VertHandle);
+        g_VertHandle = null;
+        gl && gl.deleteShader(g_FragHandle);
+        g_FragHandle = null;
+    }
+    return {
+        setters: [
+            function (ImGui_1) {
+                ImGui = ImGui_1;
+            },
+            function (PIXI_1) {
+                PIXI = PIXI_1;
+            },
+            function (U_1) {
+                U = U_1;
+            }
+        ],
+        execute: function () {
+            clipboard_text = "";
+            contexts = [];
+            contextIOs = [];
+            isFirstWindow = true;
+            ImGuiImplInternalRenderer = class ImGuiImplInternalRenderer extends PIXI.ObjectRenderer {
+                constructor(r) {
+                    super(r);
+                }
+                render(owner) {
+                    if (!(owner instanceof ImGuiWindowLayer))
+                        return;
+                    const window = owner.window;
+                    const io = window.io;
+                    const draw_data = ImGui.GetDrawData();
+                    if (draw_data === null) {
+                        throw new Error();
+                    }
+                    gl || console.log(draw_data);
+                    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+                    const fb_width = io.DisplaySize.x * io.DisplayFramebufferScale.x;
+                    const fb_height = io.DisplaySize.y * io.DisplayFramebufferScale.y;
+                    if (fb_width === 0 || fb_height === 0) {
+                        return;
+                    }
+                    draw_data.ScaleClipRects(io.DisplayFramebufferScale);
+                    // Backup GL state
+                    const last_program = gl && gl.getParameter(gl.CURRENT_PROGRAM) || null;
+                    const last_active_texture = gl && gl.getParameter(gl.ACTIVE_TEXTURE) || null;
+                    gl && gl.activeTexture(gl.TEXTURE0);
+                    const last_texture0 = gl && gl.getParameter(gl.TEXTURE_BINDING_2D) || null;
+                    const last_vertex_array = gl && gl.getParameter(gl.VERTEX_ARRAY_BINDING) || null;
+                    const last_array_buffer = gl && gl.getParameter(gl.ARRAY_BUFFER_BINDING) || null;
+                    const last_element_array_buffer = gl && gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING) || null;
+                    // GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+                    const last_viewport = gl && gl.getParameter(gl.VIEWPORT) || null;
+                    const last_scissor_box = gl && gl.getParameter(gl.SCISSOR_BOX) || null;
+                    const last_blend_src_rgb = gl && gl.getParameter(gl.BLEND_SRC_RGB) || null;
+                    const last_blend_dst_rgb = gl && gl.getParameter(gl.BLEND_DST_RGB) || null;
+                    const last_blend_src_alpha = gl && gl.getParameter(gl.BLEND_SRC_ALPHA) || null;
+                    const last_blend_dst_alpha = gl && gl.getParameter(gl.BLEND_DST_ALPHA) || null;
+                    const last_blend_equation_rgb = gl && gl.getParameter(gl.BLEND_EQUATION_RGB) || null;
+                    const last_blend_equation_alpha = gl && gl.getParameter(gl.BLEND_EQUATION_ALPHA) || null;
+                    const last_enable_blend = gl && gl.getParameter(gl.BLEND) || null;
+                    const last_enable_cull_face = gl && gl.getParameter(gl.CULL_FACE) || null;
+                    const last_enable_depth_test = gl && gl.getParameter(gl.DEPTH_TEST) || null;
+                    const last_enable_scissor_test = gl && gl.getParameter(gl.SCISSOR_TEST) || null;
+                    gl.clearColor(0, 0, 0, 0);
+                    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+                    gl && gl.bindVertexArray(g_VaoHandle);
+                    // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
+                    gl && gl.enable(gl.BLEND);
+                    gl && gl.blendEquation(gl.FUNC_ADD);
+                    gl && gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE);
+                    gl && gl.disable(gl.CULL_FACE);
+                    gl && gl.disable(gl.DEPTH_TEST);
+                    gl && gl.enable(gl.SCISSOR_TEST);
+                    // glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+                    // Setup viewport, orthographic projection matrix
+                    // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+                    gl && gl.viewport(0, 0, fb_width, fb_height);
+                    const L = draw_data.DisplayPos.x;
+                    const R = draw_data.DisplayPos.x + draw_data.DisplaySize.x;
+                    const T = draw_data.DisplayPos.y;
+                    const B = draw_data.DisplayPos.y + draw_data.DisplaySize.y;
+                    // we actually flip the bottom and top here to match with PIXI's texture usage
+                    const ortho_projection = new Float32Array([
+                        2.0 / (R - L), 0.0, 0.0, 0.0,
+                        0.0, 2.0 / (B - T), 0.0, 0.0,
+                        0.0, 0.0, -1.0, 0.0,
+                        (R + L) / (L - R), (B + T) / (T - B), 0.0, 1.0,
+                    ]);
+                    gl && gl.useProgram(g_ShaderHandle);
+                    gl && gl.uniform1i(g_AttribLocationTex, 0);
+                    gl && g_AttribLocationProjMtx && gl.uniformMatrix4fv(g_AttribLocationProjMtx, false, ortho_projection);
+                    // Render command lists
+                    gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationPosition);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationUV);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationColor);
+                    gl && gl.vertexAttribPointer(g_AttribLocationPosition, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertPosOffset);
+                    gl && gl.vertexAttribPointer(g_AttribLocationUV, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertUVOffset);
+                    gl && gl.vertexAttribPointer(g_AttribLocationColor, 4, gl.UNSIGNED_BYTE, true, ImGui.ImDrawVertSize, ImGui.ImDrawVertColOffset);
+                    // Draw
+                    const pos = draw_data.DisplayPos;
+                    const idx_buffer_type = gl && ((ImGui.ImDrawIdxSize === 4) ? gl.UNSIGNED_INT : gl.UNSIGNED_SHORT) || 0;
+                    draw_data.IterateDrawLists((draw_list) => {
+                        gl || console.log(draw_list);
+                        gl || console.log("VtxBuffer.length", draw_list.VtxBuffer.length);
+                        gl || console.log("IdxBuffer.length", draw_list.IdxBuffer.length);
+                        let idx_buffer_offset = 0;
+                        gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+                        gl && gl.bufferData(gl.ARRAY_BUFFER, draw_list.VtxBuffer, gl.STREAM_DRAW);
+                        gl && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+                        gl && gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, draw_list.IdxBuffer, gl.STREAM_DRAW);
+                        draw_list.IterateDrawCmds((draw_cmd) => {
+                            gl || console.log(draw_cmd);
+                            gl || console.log("ElemCount", draw_cmd.ElemCount);
+                            gl || console.log("ClipRect", draw_cmd.ClipRect.x, draw_cmd.ClipRect.y, draw_cmd.ClipRect.z - draw_cmd.ClipRect.x, draw_cmd.ClipRect.w - draw_cmd.ClipRect.y);
+                            gl || console.log("TextureId", draw_cmd.TextureId);
+                            if (!gl) {
+                                console.log("i: pos.x pos.y uv.x uv.y col");
+                                for (let i = 0; i < Math.min(3, draw_cmd.ElemCount); ++i) {
+                                    const view = new ImGui.ImDrawVert(draw_list.VtxBuffer.buffer, draw_list.VtxBuffer.byteOffset + i * ImGui.ImDrawVertSize);
+                                    console.log(`${i}: ${view.pos[0].toFixed(2)} ${view.pos[1].toFixed(2)} ${view.uv[0].toFixed(5)} ${view.uv[1].toFixed(5)} ${("00000000" + view.col[0].toString(16)).substr(-8)}`);
+                                }
+                            }
+                            if (draw_cmd.UserCallback !== null) {
+                                // User callback (registered via ImDrawList::AddCallback)
+                                draw_cmd.UserCallback(draw_list, draw_cmd);
+                            }
+                            else {
+                                const clip_rect = new ImGui.ImVec4(draw_cmd.ClipRect.x - pos.x, draw_cmd.ClipRect.y - pos.y, draw_cmd.ClipRect.z - pos.x, draw_cmd.ClipRect.w - pos.y);
+                                if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0 && clip_rect.w >= 0.0) {
+                                    // Apply scissor/clipping rectangle
+                                    gl && gl.scissor(clip_rect.x, clip_rect.y, clip_rect.z - clip_rect.x, clip_rect.w - clip_rect.y);
+                                    // Bind texture, Draw
+                                    gl && gl.bindTexture(gl.TEXTURE_2D, draw_cmd.TextureId);
+                                    gl && gl.drawElements(gl.TRIANGLES, draw_cmd.ElemCount, idx_buffer_type, idx_buffer_offset);
+                                }
+                            }
+                            idx_buffer_offset += draw_cmd.ElemCount * ImGui.ImDrawIdxSize;
+                        });
+                    });
+                    // Restore modified GL state
+                    gl && (last_program !== null) && gl.useProgram(last_program);
+                    gl && (last_texture0 !== null) && gl.bindTexture(gl.TEXTURE_2D, last_texture0);
+                    gl && (last_active_texture !== null) && gl.activeTexture(last_active_texture);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationPosition);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationUV);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationColor);
+                    gl && (last_vertex_array !== null) && gl.bindVertexArray(last_vertex_array);
+                    gl && (last_array_buffer !== null) && gl.bindBuffer(gl.ARRAY_BUFFER, last_array_buffer);
+                    gl && (last_element_array_buffer !== null) && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+                    gl && (last_viewport !== null) && gl.viewport(last_viewport[0], last_viewport[1], last_viewport[2], last_viewport[3]);
+                    gl && (last_scissor_box !== null) && gl.scissor(last_scissor_box[0], last_scissor_box[1], last_scissor_box[2], last_scissor_box[3]);
+                    gl && (last_blend_equation_rgb !== null && last_blend_equation_alpha !== null) && gl.blendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+                    gl && (last_blend_src_rgb !== null && last_blend_src_alpha !== null && last_blend_dst_rgb !== null && last_blend_dst_alpha !== null) && gl.blendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
+                    gl && (last_enable_blend ? gl.enable(gl.BLEND) : gl.disable(gl.BLEND));
+                    gl && (last_enable_cull_face ? gl.enable(gl.CULL_FACE) : gl.disable(gl.CULL_FACE));
+                    gl && (last_enable_depth_test ? gl.enable(gl.DEPTH_TEST) : gl.disable(gl.DEPTH_TEST));
+                    gl && (last_enable_scissor_test ? gl.enable(gl.SCISSOR_TEST) : gl.disable(gl.SCISSOR_TEST));
+                    // glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
+                }
+            };
+            gl = null;
+            app = null;
+            ImGuiWindowLayer = class ImGuiWindowLayer extends PIXI.Sprite {
+                constructor(window, tex) {
+                    super();
+                    this.pluginName = "imgui_renderer";
+                    this.window = window;
+                }
+            };
+            ImGuiWindow = class ImGuiWindow extends PIXI.Container {
+                constructor(sizeX, sizeY, update) {
+                    super();
+                    this.baseTex = new PIXI.BaseRenderTexture({ scaleMode: PIXI.SCALE_MODES.LINEAR, resolution: 1, type: PIXI.TYPES.FLOAT, format: PIXI.FORMATS.RGBA });
+                    this.tex = new PIXI.RenderTexture(this.baseTex);
+                    this.surface = new PIXI.Sprite(this.tex);
+                    this.imgui = new ImGuiWindowLayer(this, this.tex);
+                    this.ctx = ImGui.CreateContext(contextIOs.length == 0 ? null : contextIOs[0].Fonts);
+                    ImGui.SetCurrentContext(this.ctx);
+                    this.io = ImGui.GetIO();
+                    contexts.push(this.ctx);
+                    contextIOs.push(this.io);
+                    if (contexts.length == 1) {
+                        CreateFontsTexture();
+                    }
+                    if (typeof (window) !== "undefined") {
+                        ImGui.LoadIniSettingsFromMemory(window.localStorage.getItem("imgui.ini") || "");
+                    }
+                    if (typeof (navigator) !== "undefined") {
+                        this.io.ConfigMacOSXBehaviors = navigator.platform.match(/Mac/) !== null;
+                    }
+                    this.io.SetClipboardTextFn = (user_data, text) => {
+                        clipboard_text = text;
+                        // console.log(`set clipboard_text: "${clipboard_text}"`);
+                        if (typeof navigator !== "undefined" && typeof navigator.clipboard !== "undefined") {
+                            // console.log(`clipboard.writeText: "${clipboard_text}"`);
+                            navigator.clipboard.writeText(clipboard_text).then(() => {
+                                // console.log(`clipboard.writeText: "${clipboard_text}" done.`);
+                            });
+                        }
+                    };
+                    this.io.GetClipboardTextFn = (user_data) => {
+                        // if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+                        //     console.log(`clipboard.readText: "${clipboard_text}"`);
+                        //     (navigator as any).clipboard.readText().then((text: string): void => {
+                        //         clipboard_text = text;
+                        //         console.log(`clipboard.readText: "${clipboard_text}" done.`);
+                        //     });
+                        // }
+                        // console.log(`get clipboard_text: "${clipboard_text}"`);
+                        return clipboard_text;
+                    };
+                    this.io.ClipboardUserData = null;
+                    // Setup back-end capabilities flags
+                    this.io.BackendFlags |= ImGui.BackendFlags.HasMouseCursors; // We can honor GetMouseCursor() values (optional)
+                    // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+                    this.io.KeyMap[ImGui.Key.Tab] = 9;
+                    this.io.KeyMap[ImGui.Key.LeftArrow] = 37;
+                    this.io.KeyMap[ImGui.Key.RightArrow] = 39;
+                    this.io.KeyMap[ImGui.Key.UpArrow] = 38;
+                    this.io.KeyMap[ImGui.Key.DownArrow] = 40;
+                    this.io.KeyMap[ImGui.Key.PageUp] = 33;
+                    this.io.KeyMap[ImGui.Key.PageDown] = 34;
+                    this.io.KeyMap[ImGui.Key.Home] = 36;
+                    this.io.KeyMap[ImGui.Key.End] = 35;
+                    this.io.KeyMap[ImGui.Key.Insert] = 45;
+                    this.io.KeyMap[ImGui.Key.Delete] = 46;
+                    this.io.KeyMap[ImGui.Key.Backspace] = 8;
+                    this.io.KeyMap[ImGui.Key.Space] = 32;
+                    this.io.KeyMap[ImGui.Key.Enter] = 13;
+                    this.io.KeyMap[ImGui.Key.Escape] = 27;
+                    this.io.KeyMap[ImGui.Key.A] = 65;
+                    this.io.KeyMap[ImGui.Key.C] = 67;
+                    this.io.KeyMap[ImGui.Key.V] = 86;
+                    this.io.KeyMap[ImGui.Key.X] = 88;
+                    this.io.KeyMap[ImGui.Key.Y] = 89;
+                    this.io.KeyMap[ImGui.Key.Z] = 90;
+                    this.update = update;
+                    this.resize(sizeX, sizeY);
+                    this.imgui.pluginName = 'imgui_renderer';
+                    this.addChild(this.surface);
+                    app.renderer.plugins.interaction.addListener("mousedown", this.mouseDown.bind(this));
+                    app.renderer.plugins.interaction.addListener("mouseup", this.mouseUp.bind(this));
+                    app.ticker.add(this.updateInternal.bind(this));
+                    this.interactive = false;
+                    this.interactiveChildren = true;
+                    this.surface.interactive = false;
+                }
+                getSizeX() { return this.sizeX; }
+                getSizeY() { return this.sizeY; }
+                withContext(cb) {
+                    ImGui.SetCurrentContext(this.ctx);
+                    cb();
+                }
+                mouseDown(e) {
+                    if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface) {
+                        this.io.MouseDown[mouse_button_map[0]] = true;
+                    }
+                }
+                mouseUp(e) {
+                    if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface) {
+                        this.io.MouseDown[mouse_button_map[0]] = false;
+                    }
+                }
+                resize(sizeX, sizeY) {
+                    this.sizeX = sizeX;
+                    this.sizeY = sizeY;
+                    this.baseTex.resize(sizeX, sizeY);
+                    this.tex.frame = new PIXI.Rectangle(0, 0, this.baseTex.width, this.baseTex.height);
+                }
+                updateInternal(deltaTime) {
+                    const dt = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+                    ImGui.SetCurrentContext(this.ctx);
+                    if (this.io.WantSaveIniSettings) {
+                        this.io.WantSaveIniSettings = false;
+                        if (typeof (window) !== "undefined") {
+                            window.localStorage.setItem("imgui.ini", ImGui.SaveIniSettingsToMemory());
+                        }
+                    }
+                    this.io.DisplaySize.x = this.sizeX;
+                    this.io.DisplaySize.y = this.sizeY;
+                    this.io.DisplayFramebufferScale.x = 1;
+                    this.io.DisplayFramebufferScale.y = 1;
+                    this.io.DeltaTime = dt;
+                    let localPos = this.toLocal(app.renderer.plugins.interaction.mouse.global);
+                    if (localPos.x < 0 || localPos.y < 0 || localPos.x >= this.sizeX || localPos.y >= this.sizeY) {
+                        localPos = new PIXI.Point(-Number.MAX_VALUE, -Number.MAX_VALUE);
+                    }
+                    this.io.MousePos.x = localPos.x;
+                    this.io.MousePos.y = localPos.y;
+                    if (this.io.WantSetMousePos) {
+                        console.log("TODO: MousePos", this.io.MousePos.x, this.io.MousePos.y);
+                    }
+                    if (typeof (document) !== "undefined") {
+                        if (this.io.MouseDrawCursor) {
+                            document.body.style.cursor = "none";
+                        }
+                        else {
+                            switch (ImGui.GetMouseCursor()) {
+                                case ImGui.MouseCursor.None:
+                                    document.body.style.cursor = "none";
+                                    break;
+                                default:
+                                case ImGui.MouseCursor.Arrow:
+                                    document.body.style.cursor = "default";
+                                    break;
+                                case ImGui.MouseCursor.TextInput:
+                                    document.body.style.cursor = "text";
+                                    break; // When hovering over InputText, etc.
+                                case ImGui.MouseCursor.ResizeAll:
+                                    document.body.style.cursor = "move";
+                                    break; // Unused
+                                case ImGui.MouseCursor.ResizeNS:
+                                    document.body.style.cursor = "ns-resize";
+                                    break; // When hovering over an horizontal border
+                                case ImGui.MouseCursor.ResizeEW:
+                                    document.body.style.cursor = "ew-resize";
+                                    break; // When hovering over a vertical border or a column
+                                case ImGui.MouseCursor.ResizeNESW:
+                                    document.body.style.cursor = "nesw-resize";
+                                    break; // When hovering over the bottom-left corner of a window
+                                case ImGui.MouseCursor.ResizeNWSE:
+                                    document.body.style.cursor = "nwse-resize";
+                                    break; // When hovering over the bottom-right corner of a window
+                                case ImGui.MouseCursor.Hand:
+                                    document.body.style.cursor = "move";
+                                    break;
+                            }
+                        }
+                    }
+                    // Gamepad navigation mapping [BETA]
+                    for (let i = 0; i < this.io.NavInputs.length; ++i) {
+                        this.io.NavInputs[i] = 0.0;
+                    }
+                    if (this.io.ConfigFlags & ImGui.ConfigFlags.NavEnableGamepad) {
+                        // Update gamepad inputs
+                        const gamepads = (typeof (navigator) !== "undefined" && typeof (navigator.getGamepads) === "function") ? navigator.getGamepads() : [];
+                        for (let i = 0; i < gamepads.length; ++i) {
+                            const gamepad = gamepads[i];
+                            if (!gamepad) {
+                                continue;
+                            }
+                            const buttons_count = gamepad.buttons.length;
+                            const axes_count = gamepad.axes.length;
+                            const MAP_BUTTON = function (NAV_NO, BUTTON_NO) {
+                                if (!gamepad) {
+                                    return;
+                                }
+                                if (buttons_count > BUTTON_NO && gamepad.buttons[BUTTON_NO].pressed)
+                                    this.io.NavInputs[NAV_NO] = 1.0;
+                            };
+                            const MAP_ANALOG = function (NAV_NO, AXIS_NO, V0, V1) {
+                                if (!gamepad) {
+                                    return;
+                                }
+                                let v = (axes_count > AXIS_NO) ? gamepad.axes[AXIS_NO] : V0;
+                                v = (v - V0) / (V1 - V0);
+                                if (v > 1.0)
+                                    v = 1.0;
+                                if (this.io.NavInputs[NAV_NO] < v)
+                                    this.io.NavInputs[NAV_NO] = v;
+                            };
+                            // TODO: map input based on vendor and product id
+                            // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/id
+                            const match = gamepad.id.match(/^([0-9a-f]{4})-([0-9a-f]{4})-.*$/);
+                            const match_chrome = gamepad.id.match(/^.*\(.*Vendor: ([0-9a-f]{4}) Product: ([0-9a-f]{4})\).*$/);
+                            const vendor = (match && match[1]) || (match_chrome && match_chrome[1]) || "0000";
+                            const product = (match && match[2]) || (match_chrome && match_chrome[2]) || "0000";
+                            switch (vendor + product) {
+                                case "046dc216": // Logitech Logitech Dual Action (Vendor: 046d Product: c216)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 1); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 2); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 0); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_ANALOG(ImGui.NavInput.DpadLeft, 4, -0.3, -0.9); // D-Pad Left
+                                    MAP_ANALOG(ImGui.NavInput.DpadRight, 4, +0.3, +0.9); // D-Pad Right
+                                    MAP_ANALOG(ImGui.NavInput.DpadUp, 5, -0.3, -0.9); // D-Pad Up
+                                    MAP_ANALOG(ImGui.NavInput.DpadDown, 5, +0.3, +0.9); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 6); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 7); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                case "046dc21d": // Logitech Gamepad F310 (STANDARD GAMEPAD Vendor: 046d Product: c21d)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 0); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 1); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 2); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_BUTTON(ImGui.NavInput.DpadLeft, 14); // D-Pad Left
+                                    MAP_BUTTON(ImGui.NavInput.DpadRight, 15); // D-Pad Right
+                                    MAP_BUTTON(ImGui.NavInput.DpadUp, 12); // D-Pad Up
+                                    MAP_BUTTON(ImGui.NavInput.DpadDown, 13); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_ANALOG(ImGui.NavInput.TweakSlow, 6, +0.3, +0.9); // L2 / LT
+                                    MAP_ANALOG(ImGui.NavInput.TweakFast, 7, +0.3, +0.9); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                case "2dc86001": // 8Bitdo SN30 Pro  8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6001)
+                                case "2dc86101": // 8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6101)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 1); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 0); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 4); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_ANALOG(ImGui.NavInput.DpadLeft, 6, -0.3, -0.9); // D-Pad Left
+                                    MAP_ANALOG(ImGui.NavInput.DpadRight, 6, +0.3, +0.9); // D-Pad Right
+                                    MAP_ANALOG(ImGui.NavInput.DpadUp, 7, -0.3, -0.9); // D-Pad Up
+                                    MAP_ANALOG(ImGui.NavInput.DpadDown, 7, +0.3, +0.9); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 6); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 7); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 8); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 9); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                default: // standard gamepad: https://w3c.github.io/gamepad/#remapping
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 0); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 1); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 2); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_BUTTON(ImGui.NavInput.DpadLeft, 14); // D-Pad Left
+                                    MAP_BUTTON(ImGui.NavInput.DpadRight, 15); // D-Pad Right
+                                    MAP_BUTTON(ImGui.NavInput.DpadUp, 12); // D-Pad Up
+                                    MAP_BUTTON(ImGui.NavInput.DpadDown, 13); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 6); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 7); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                            }
+                        }
+                    }
+                    ImGui.NewFrame();
+                    this.update(dt);
+                    ImGui.EndFrame();
+                    ImGui.Render();
+                    app.renderer.render(this.imgui, this.tex);
+                    this.surface.interactive = this.io.WantCaptureMouse;
+                }
+            };
+            exports_1("ImGuiWindow", ImGuiWindow);
+            canvas = null;
+            //export let gl: WebGL2RenderingContext | null = null;
+            g_ShaderHandle = null;
+            g_VertHandle = null;
+            g_FragHandle = null;
+            g_AttribLocationTex = null;
+            g_AttribLocationProjMtx = null;
+            g_AttribLocationPosition = -1;
+            g_AttribLocationUV = -1;
+            g_AttribLocationColor = -1;
+            g_VaoHandle = null;
+            g_VboHandle = null;
+            g_ElementsHandle = null;
+            g_FontTexture = null;
+            // MouseEvent.button
+            // A number representing a given button:
+            // 0: Main button pressed, usually the left button or the un-initialized state
+            // 1: Auxiliary button pressed, usually the wheel button or the middle button (if present)
+            // 2: Secondary button pressed, usually the right button
+            // 3: Fourth button, typically the Browser Back button
+            // 4: Fifth button, typically the Browser Forward button
+            mouse_button_map = [0, 2, 1, 3, 4];
+        }
+    };
+});
+//# sourceMappingURL=imgui_impl.js.map
\ No newline at end of file
diff --git a/src/imgui_impl.js.map b/src/imgui_impl.js.map
new file mode 100644
index 0000000..bcb545f
--- /dev/null
+++ b/src/imgui_impl.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/src/imgui_impl.ts b/src/imgui_impl.ts
new file mode 100644
index 0000000..a5dad20
--- /dev/null
+++ b/src/imgui_impl.ts
@@ -0,0 +1,797 @@
+import * as ImGui from "imgui-js";
+import { ImVec2 } from "imgui-js";
+import * as PIXI from "pixi.js";
+import * as U from "./utils";
+
+let clipboard_text: string = "";
+
+const contexts: ImGui.ImGuiContext[] = [];
+const contextIOs: ImGui.ImGuiIO[] = [];
+let isFirstWindow: boolean = true;
+
+class ImGuiImplInternalRenderer extends PIXI.ObjectRenderer
+{
+    constructor(r: PIXI.Renderer)
+    {
+        super(r);
+    }
+    render(owner: PIXI.DisplayObject): void
+    {
+        if (!(owner instanceof ImGuiWindowLayer)) return;
+
+        const window: ImGuiWindow = (owner as ImGuiWindowLayer).window;
+
+        const io: ImGui.ImGuiIO = window.io;
+        const draw_data: ImGui.ImDrawData = ImGui.GetDrawData();
+        if (draw_data === null) { throw new Error(); }
+
+        gl || console.log(draw_data);
+
+        // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+        const fb_width: number = io.DisplaySize.x * io.DisplayFramebufferScale.x;
+        const fb_height: number = io.DisplaySize.y * io.DisplayFramebufferScale.y;
+        if (fb_width === 0 || fb_height === 0) {
+            return;
+        }
+        draw_data.ScaleClipRects(io.DisplayFramebufferScale);
+
+        // Backup GL state
+        const last_program: WebGLProgram | null = gl && gl.getParameter(gl.CURRENT_PROGRAM) || null;
+        const last_active_texture: GLenum | null = gl && gl.getParameter(gl.ACTIVE_TEXTURE) || null;
+        gl && gl.activeTexture(gl.TEXTURE0);
+        const last_texture0: WebGLTexture | null = gl && gl.getParameter(gl.TEXTURE_BINDING_2D) || null;
+        const last_vertex_array: WebGLVertexArrayObject | null = gl && gl.getParameter(gl.VERTEX_ARRAY_BINDING) || null;
+        const last_array_buffer: WebGLBuffer | null = gl && gl.getParameter(gl.ARRAY_BUFFER_BINDING) || null;
+        const last_element_array_buffer: WebGLBuffer | null = gl && gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING) || null;
+        // GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+        const last_viewport: Int32Array | null = gl && gl.getParameter(gl.VIEWPORT) || null;
+        const last_scissor_box: Int32Array | null = gl && gl.getParameter(gl.SCISSOR_BOX) || null;
+        const last_blend_src_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_SRC_RGB) || null;
+        const last_blend_dst_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_DST_RGB) || null;
+        const last_blend_src_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_SRC_ALPHA) || null;
+        const last_blend_dst_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_DST_ALPHA) || null;
+        const last_blend_equation_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_EQUATION_RGB) || null;
+        const last_blend_equation_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_EQUATION_ALPHA) || null;
+        const last_enable_blend: GLboolean | null = gl && gl.getParameter(gl.BLEND) || null;
+        const last_enable_cull_face: GLboolean | null = gl && gl.getParameter(gl.CULL_FACE) || null;
+        const last_enable_depth_test: GLboolean | null = gl && gl.getParameter(gl.DEPTH_TEST) || null;
+        const last_enable_scissor_test: GLboolean | null = gl && gl.getParameter(gl.SCISSOR_TEST) || null;
+
+        gl.clearColor(0, 0, 0, 0);
+        gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+        
+        gl && gl.bindVertexArray(g_VaoHandle);
+
+        // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
+        gl && gl.enable(gl.BLEND);
+        gl && gl.blendEquation(gl.FUNC_ADD);
+        gl && gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE);
+        gl && gl.disable(gl.CULL_FACE);
+        gl && gl.disable(gl.DEPTH_TEST);
+        gl && gl.enable(gl.SCISSOR_TEST);
+        // glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+
+        // Setup viewport, orthographic projection matrix
+        // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+        gl && gl.viewport(0, 0, fb_width, fb_height);
+        const L: number = draw_data.DisplayPos.x;
+        const R: number = draw_data.DisplayPos.x + draw_data.DisplaySize.x;
+        const T: number = draw_data.DisplayPos.y;
+        const B: number = draw_data.DisplayPos.y + draw_data.DisplaySize.y;
+        // we actually flip the bottom and top here to match with PIXI's texture usage
+        const ortho_projection: Float32Array = new Float32Array([
+            2.0 / (R - L),     0.0,                0.0, 0.0,
+            0.0,               2.0 / (B - T),      0.0, 0.0,
+            0.0,               0.0,               -1.0, 0.0,
+            (R + L) / (L - R), (B + T) / (T - B),  0.0, 1.0,
+        ]);
+        gl && gl.useProgram(g_ShaderHandle);
+        gl && gl.uniform1i(g_AttribLocationTex, 0);
+        gl && g_AttribLocationProjMtx && gl.uniformMatrix4fv(g_AttribLocationProjMtx, false, ortho_projection);
+
+        // Render command lists
+        gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+        gl && gl.enableVertexAttribArray(g_AttribLocationPosition);
+        gl && gl.enableVertexAttribArray(g_AttribLocationUV);
+        gl && gl.enableVertexAttribArray(g_AttribLocationColor);
+
+        gl && gl.vertexAttribPointer(g_AttribLocationPosition, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertPosOffset);
+        gl && gl.vertexAttribPointer(g_AttribLocationUV, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertUVOffset);
+        gl && gl.vertexAttribPointer(g_AttribLocationColor, 4, gl.UNSIGNED_BYTE, true, ImGui.ImDrawVertSize, ImGui.ImDrawVertColOffset);
+
+        // Draw
+        const pos = draw_data.DisplayPos;
+        const idx_buffer_type: GLenum = gl && ((ImGui.ImDrawIdxSize === 4) ? gl.UNSIGNED_INT : gl.UNSIGNED_SHORT) || 0;
+        draw_data.IterateDrawLists((draw_list: ImGui.ImDrawList): void => {
+            gl || console.log(draw_list);
+            gl || console.log("VtxBuffer.length", draw_list.VtxBuffer.length);
+            gl || console.log("IdxBuffer.length", draw_list.IdxBuffer.length);
+            
+            let idx_buffer_offset: number = 0;
+
+            gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+            gl && gl.bufferData(gl.ARRAY_BUFFER, draw_list.VtxBuffer, gl.STREAM_DRAW);
+            gl && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+            gl && gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, draw_list.IdxBuffer, gl.STREAM_DRAW);
+
+            draw_list.IterateDrawCmds((draw_cmd: ImGui.ImDrawCmd): void => {
+                gl || console.log(draw_cmd);
+                gl || console.log("ElemCount", draw_cmd.ElemCount);
+                gl || console.log("ClipRect", draw_cmd.ClipRect.x, draw_cmd.ClipRect.y, draw_cmd.ClipRect.z - draw_cmd.ClipRect.x, draw_cmd.ClipRect.w - draw_cmd.ClipRect.y);
+                gl || console.log("TextureId", draw_cmd.TextureId);
+                if (!gl) {
+                    console.log("i: pos.x pos.y uv.x uv.y col");
+                    for (let i = 0; i < Math.min(3, draw_cmd.ElemCount); ++i) {
+                        const view: ImGui.ImDrawVert = new ImGui.ImDrawVert(draw_list.VtxBuffer.buffer, draw_list.VtxBuffer.byteOffset + i * ImGui.ImDrawVertSize);
+                        console.log(`${i}: ${view.pos[0].toFixed(2)} ${view.pos[1].toFixed(2)} ${view.uv[0].toFixed(5)} ${view.uv[1].toFixed(5)} ${("00000000" + view.col[0].toString(16)).substr(-8)}`);
+                    }
+                }
+
+                if (draw_cmd.UserCallback !== null) {
+                    // User callback (registered via ImDrawList::AddCallback)
+                    draw_cmd.UserCallback(draw_list, draw_cmd);
+                } else {
+                    const clip_rect = new ImGui.ImVec4(draw_cmd.ClipRect.x - pos.x, draw_cmd.ClipRect.y - pos.y, draw_cmd.ClipRect.z - pos.x, draw_cmd.ClipRect.w - pos.y);
+                    if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0 && clip_rect.w >= 0.0) {
+                        // Apply scissor/clipping rectangle
+                        gl && gl.scissor(clip_rect.x, clip_rect.y, clip_rect.z - clip_rect.x, clip_rect.w - clip_rect.y);
+
+                        // Bind texture, Draw
+                        gl && gl.bindTexture(gl.TEXTURE_2D, draw_cmd.TextureId);
+                        gl && gl.drawElements(gl.TRIANGLES, draw_cmd.ElemCount, idx_buffer_type, idx_buffer_offset);
+                    }
+                }
+
+                idx_buffer_offset += draw_cmd.ElemCount * ImGui.ImDrawIdxSize;
+            });
+        });
+
+        // Restore modified GL state
+        
+        gl && (last_program !== null) && gl.useProgram(last_program);
+        gl && (last_texture0 !== null) && gl.bindTexture(gl.TEXTURE_2D, last_texture0);
+        gl && (last_active_texture !== null) && gl.activeTexture(last_active_texture);
+        gl && gl.disableVertexAttribArray(g_AttribLocationPosition);
+        gl && gl.disableVertexAttribArray(g_AttribLocationUV);
+        gl && gl.disableVertexAttribArray(g_AttribLocationColor);
+        gl && (last_vertex_array !== null) && gl.bindVertexArray(last_vertex_array);
+        gl && (last_array_buffer !== null) && gl.bindBuffer(gl.ARRAY_BUFFER, last_array_buffer);
+        gl && (last_element_array_buffer !== null) && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+        gl && (last_viewport !== null) && gl.viewport(last_viewport[0], last_viewport[1], last_viewport[2], last_viewport[3]);
+        gl && (last_scissor_box !== null) && gl.scissor(last_scissor_box[0], last_scissor_box[1], last_scissor_box[2], last_scissor_box[3]);
+        gl && (last_blend_equation_rgb !== null && last_blend_equation_alpha !== null) && gl.blendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+        gl && (last_blend_src_rgb !== null && last_blend_src_alpha !== null && last_blend_dst_rgb !== null && last_blend_dst_alpha !== null) && gl.blendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
+        gl && (last_enable_blend ? gl.enable(gl.BLEND) : gl.disable(gl.BLEND));
+        gl && (last_enable_cull_face ? gl.enable(gl.CULL_FACE) : gl.disable(gl.CULL_FACE));
+        gl && (last_enable_depth_test ? gl.enable(gl.DEPTH_TEST) : gl.disable(gl.DEPTH_TEST));
+        gl && (last_enable_scissor_test ? gl.enable(gl.SCISSOR_TEST) : gl.disable(gl.SCISSOR_TEST));
+        // glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
+    }
+}
+
+let gl: WebGL2RenderingContext = null;
+let app: PIXI.Application = null;
+
+class ImGuiWindowLayer extends PIXI.Sprite
+{
+    public readonly window: ImGuiWindow;
+    constructor(window: ImGuiWindow, tex:PIXI.RenderTexture)
+    {
+        super();
+        this.pluginName = "imgui_renderer";
+        this.window = window;
+    }
+}
+
+export class ImGuiWindow extends PIXI.Container
+{
+    public readonly ctx: ImGui.ImGuiContext;
+    public readonly io: ImGui.ImGuiIO;
+    private sizeX: number;
+    private sizeY: number;
+    public getSizeX(): number { return this.sizeX; }
+    public getSizeY(): number { return this.sizeY; }
+
+    private baseTex: PIXI.BaseRenderTexture = new PIXI.BaseRenderTexture({scaleMode: PIXI.SCALE_MODES.LINEAR, resolution: 1, type: PIXI.TYPES.FLOAT, format: PIXI.FORMATS.RGBA});
+    private tex: PIXI.RenderTexture = new PIXI.RenderTexture(this.baseTex);
+    
+    private surface: PIXI.Sprite = new PIXI.Sprite(this.tex);
+    private imgui: ImGuiWindowLayer = new ImGuiWindowLayer(this, this.tex);
+    
+    private update: (dt: number) => void;
+    constructor(sizeX: number, sizeY: number, update: (dt: number) => void)
+    {
+        super();
+
+        this.ctx = ImGui.CreateContext(contextIOs.length == 0 ? null : contextIOs[0].Fonts);
+        ImGui.SetCurrentContext(this.ctx);
+        this.io = ImGui.GetIO();
+
+        contexts.push(this.ctx);
+        contextIOs.push(this.io);
+
+        if (contexts.length == 1)
+        {
+            CreateFontsTexture();
+        }
+
+        if (typeof(window) !== "undefined") {
+            ImGui.LoadIniSettingsFromMemory(window.localStorage.getItem("imgui.ini") || "");
+        }
+
+        if (typeof(navigator) !== "undefined") {
+            this.io.ConfigMacOSXBehaviors = navigator.platform.match(/Mac/) !== null;
+        }
+
+        this.io.SetClipboardTextFn = (user_data: any, text: string): void => {
+            clipboard_text = text;
+            // console.log(`set clipboard_text: "${clipboard_text}"`);
+            if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+                // console.log(`clipboard.writeText: "${clipboard_text}"`);
+                (navigator as any).clipboard.writeText(clipboard_text).then((): void => {
+                    // console.log(`clipboard.writeText: "${clipboard_text}" done.`);
+                });
+            }
+        };
+        this.io.GetClipboardTextFn = (user_data: any): string => {
+            // if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+            //     console.log(`clipboard.readText: "${clipboard_text}"`);
+            //     (navigator as any).clipboard.readText().then((text: string): void => {
+            //         clipboard_text = text;
+            //         console.log(`clipboard.readText: "${clipboard_text}" done.`);
+            //     });
+            // }
+            // console.log(`get clipboard_text: "${clipboard_text}"`);
+            return clipboard_text;
+        };
+        this.io.ClipboardUserData = null;
+
+        // Setup back-end capabilities flags
+        this.io.BackendFlags |= ImGui.BackendFlags.HasMouseCursors;   // We can honor GetMouseCursor() values (optional)
+
+        // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+        this.io.KeyMap[ImGui.Key.Tab] = 9;
+        this.io.KeyMap[ImGui.Key.LeftArrow] = 37;
+        this.io.KeyMap[ImGui.Key.RightArrow] = 39;
+        this.io.KeyMap[ImGui.Key.UpArrow] = 38;
+        this.io.KeyMap[ImGui.Key.DownArrow] = 40;
+        this.io.KeyMap[ImGui.Key.PageUp] = 33;
+        this.io.KeyMap[ImGui.Key.PageDown] = 34;
+        this.io.KeyMap[ImGui.Key.Home] = 36;
+        this.io.KeyMap[ImGui.Key.End] = 35;
+        this.io.KeyMap[ImGui.Key.Insert] = 45;
+        this.io.KeyMap[ImGui.Key.Delete] = 46;
+        this.io.KeyMap[ImGui.Key.Backspace] = 8;
+        this.io.KeyMap[ImGui.Key.Space] = 32;
+        this.io.KeyMap[ImGui.Key.Enter] = 13;
+        this.io.KeyMap[ImGui.Key.Escape] = 27;
+        this.io.KeyMap[ImGui.Key.A] = 65;
+        this.io.KeyMap[ImGui.Key.C] = 67;
+        this.io.KeyMap[ImGui.Key.V] = 86;
+        this.io.KeyMap[ImGui.Key.X] = 88;
+        this.io.KeyMap[ImGui.Key.Y] = 89;
+        this.io.KeyMap[ImGui.Key.Z] = 90;
+
+        this.update = update;
+        this.resize(sizeX, sizeY);
+        this.imgui.pluginName = 'imgui_renderer';
+        this.addChild(this.surface);
+        app.renderer.plugins.interaction.addListener("mousedown", this.mouseDown.bind(this));
+        app.renderer.plugins.interaction.addListener("mouseup", this.mouseUp.bind(this));
+        app.ticker.add(this.updateInternal.bind(this));
+
+        this.interactive = false;
+        this.interactiveChildren = true;
+
+        this.surface.interactive = false;
+    }
+    withContext(cb: () => void)
+    {
+        ImGui.SetCurrentContext(this.ctx);
+        cb();
+    }
+    mouseDown(e: PIXI.interaction.InteractionEvent): void
+    {
+        if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface)
+        {
+            this.io.MouseDown[mouse_button_map[0]] = true;
+        }
+    }
+    mouseUp(e: PIXI.interaction.InteractionEvent): void
+    {
+        if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface)
+        {
+            this.io.MouseDown[mouse_button_map[0]] = false;
+        }
+    }
+    resize(sizeX: number, sizeY: number)
+    {
+        this.sizeX = sizeX;
+        this.sizeY = sizeY;
+        this.baseTex.resize(sizeX, sizeY);
+        this.tex.frame = new PIXI.Rectangle(0, 0, this.baseTex.width, this.baseTex.height);
+    }
+    updateInternal(deltaTime: number)
+    {
+        const dt: number = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+
+        ImGui.SetCurrentContext(this.ctx);
+
+        if (this.io.WantSaveIniSettings) {
+            this.io.WantSaveIniSettings = false;
+            if (typeof(window) !== "undefined") {
+                window.localStorage.setItem("imgui.ini", ImGui.SaveIniSettingsToMemory());
+            }
+        }
+
+        this.io.DisplaySize.x = this.sizeX;
+        this.io.DisplaySize.y = this.sizeY;
+        this.io.DisplayFramebufferScale.x = 1;
+        this.io.DisplayFramebufferScale.y = 1;
+
+        this.io.DeltaTime = dt;
+
+        let localPos: PIXI.Point = this.toLocal(app.renderer.plugins.interaction.mouse.global);
+        if (localPos.x < 0 || localPos.y < 0 || localPos.x >= this.sizeX || localPos.y >= this.sizeY)
+        {
+            localPos = new PIXI.Point(-Number.MAX_VALUE, -Number.MAX_VALUE);
+        }
+        this.io.MousePos.x = localPos.x;
+        this.io.MousePos.y = localPos.y;
+
+        if (this.io.WantSetMousePos) {
+            console.log("TODO: MousePos", this.io.MousePos.x, this.io.MousePos.y);
+        }
+
+        if (typeof(document) !== "undefined") {
+            if (this.io.MouseDrawCursor) {
+                document.body.style.cursor = "none";
+            } else {
+                switch (ImGui.GetMouseCursor()) {
+                    case ImGui.MouseCursor.None: document.body.style.cursor = "none"; break;
+                    default: case ImGui.MouseCursor.Arrow: document.body.style.cursor = "default"; break;
+                    case ImGui.MouseCursor.TextInput: document.body.style.cursor = "text"; break;         // When hovering over InputText, etc.
+                    case ImGui.MouseCursor.ResizeAll: document.body.style.cursor = "move"; break;         // Unused
+                    case ImGui.MouseCursor.ResizeNS: document.body.style.cursor = "ns-resize"; break;     // When hovering over an horizontal border
+                    case ImGui.MouseCursor.ResizeEW: document.body.style.cursor = "ew-resize"; break;     // When hovering over a vertical border or a column
+                    case ImGui.MouseCursor.ResizeNESW: document.body.style.cursor = "nesw-resize"; break; // When hovering over the bottom-left corner of a window
+                    case ImGui.MouseCursor.ResizeNWSE: document.body.style.cursor = "nwse-resize"; break; // When hovering over the bottom-right corner of a window
+                    case ImGui.MouseCursor.Hand: document.body.style.cursor = "move"; break;
+                }
+            }
+        }
+
+        // Gamepad navigation mapping [BETA]
+        for (let i = 0; i < this.io.NavInputs.length; ++i) {
+            this.io.NavInputs[i] = 0.0;
+        }
+        if (this.io.ConfigFlags & ImGui.ConfigFlags.NavEnableGamepad) {
+            // Update gamepad inputs
+            const gamepads: (Gamepad | null)[] = (typeof(navigator) !== "undefined" && typeof(navigator.getGamepads) === "function") ? navigator.getGamepads() : [];
+            for (let i = 0; i < gamepads.length; ++i) {
+                const gamepad: Gamepad | null = gamepads[i];
+                if (!gamepad) { continue; }
+                const buttons_count: number = gamepad.buttons.length;
+                const axes_count: number = gamepad.axes.length;
+                const MAP_BUTTON = function(NAV_NO: number, BUTTON_NO: number): void {
+                    if (!gamepad) { return; }
+                    if (buttons_count > BUTTON_NO && gamepad.buttons[BUTTON_NO].pressed)
+                        this.io.NavInputs[NAV_NO] = 1.0;
+                }
+                const MAP_ANALOG = function(NAV_NO: number, AXIS_NO: number, V0: number, V1: number): void {
+                    if (!gamepad) { return; }
+                    let v: number = (axes_count > AXIS_NO) ? gamepad.axes[AXIS_NO] : V0;
+                    v = (v - V0) / (V1 - V0);
+                    if (v > 1.0) v = 1.0;
+                    if (this.io.NavInputs[NAV_NO] < v) this.io.NavInputs[NAV_NO] = v;
+                }
+                // TODO: map input based on vendor and product id
+                // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/id
+                const match: RegExpMatchArray | null = gamepad.id.match(/^([0-9a-f]{4})-([0-9a-f]{4})-.*$/);
+                const match_chrome: RegExpMatchArray | null = gamepad.id.match(/^.*\(.*Vendor: ([0-9a-f]{4}) Product: ([0-9a-f]{4})\).*$/);
+                const vendor: string = (match && match[1]) || (match_chrome && match_chrome[1]) || "0000";
+                const product: string = (match && match[2]) || (match_chrome && match_chrome[2]) || "0000";
+                switch (vendor + product) {
+                    case "046dc216": // Logitech Logitech Dual Action (Vendor: 046d Product: c216)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    1); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      2); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        0); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_ANALOG(ImGui.NavInput.DpadLeft,    4, -0.3, -0.9); // D-Pad Left
+                    MAP_ANALOG(ImGui.NavInput.DpadRight,   4, +0.3, +0.9); // D-Pad Right
+                    MAP_ANALOG(ImGui.NavInput.DpadUp,      5, -0.3, -0.9); // D-Pad Up
+                    MAP_ANALOG(ImGui.NavInput.DpadDown,    5, +0.3, +0.9); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   6); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   7); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    case "046dc21d": // Logitech Gamepad F310 (STANDARD GAMEPAD Vendor: 046d Product: c21d)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    0); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      1); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        2); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_BUTTON(ImGui.NavInput.DpadLeft,    14); // D-Pad Left
+                    MAP_BUTTON(ImGui.NavInput.DpadRight,   15); // D-Pad Right
+                    MAP_BUTTON(ImGui.NavInput.DpadUp,      12); // D-Pad Up
+                    MAP_BUTTON(ImGui.NavInput.DpadDown,    13); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_ANALOG(ImGui.NavInput.TweakSlow,   6, +0.3, +0.9); // L2 / LT
+                    MAP_ANALOG(ImGui.NavInput.TweakFast,   7, +0.3, +0.9); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    case "2dc86001": // 8Bitdo SN30 Pro  8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6001)
+                    case "2dc86101": // 8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6101)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    1); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      0); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        4); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_ANALOG(ImGui.NavInput.DpadLeft,    6, -0.3, -0.9); // D-Pad Left
+                    MAP_ANALOG(ImGui.NavInput.DpadRight,   6, +0.3, +0.9); // D-Pad Right
+                    MAP_ANALOG(ImGui.NavInput.DpadUp,      7, -0.3, -0.9); // D-Pad Up
+                    MAP_ANALOG(ImGui.NavInput.DpadDown,    7, +0.3, +0.9); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   6); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   7); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   8); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   9); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    default: // standard gamepad: https://w3c.github.io/gamepad/#remapping
+                    MAP_BUTTON(ImGui.NavInput.Activate,    0); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      1); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        2); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_BUTTON(ImGui.NavInput.DpadLeft,    14); // D-Pad Left
+                    MAP_BUTTON(ImGui.NavInput.DpadRight,   15); // D-Pad Right
+                    MAP_BUTTON(ImGui.NavInput.DpadUp,      12); // D-Pad Up
+                    MAP_BUTTON(ImGui.NavInput.DpadDown,    13); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   6); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   7); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                }
+            }
+        }
+
+        ImGui.NewFrame();
+
+        this.update(dt);
+
+        ImGui.EndFrame();
+        ImGui.Render();
+
+        app.renderer.render(this.imgui, this.tex);
+
+        this.surface.interactive = this.io.WantCaptureMouse;
+    }
+}
+
+let canvas: HTMLCanvasElement | null = null;
+
+//export let gl: WebGL2RenderingContext | null = null;
+let g_ShaderHandle: WebGLProgram | null = null;
+let g_VertHandle: WebGLShader | null = null;
+let g_FragHandle: WebGLShader | null = null;
+let g_AttribLocationTex: WebGLUniformLocation | null = null;
+let g_AttribLocationProjMtx: WebGLUniformLocation | null = null;
+let g_AttribLocationPosition: GLint = -1;
+let g_AttribLocationUV: GLint = -1;
+let g_AttribLocationColor: GLint = -1;
+let g_VaoHandle: WebGLVertexArrayObject = null;
+let g_VboHandle: WebGLBuffer | null = null;
+let g_ElementsHandle: WebGLBuffer | null = null;
+let g_FontTexture: WebGLTexture | null = null;
+
+function document_on_copy(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        event.clipboardData.setData("text/plain", clipboard_text);
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function document_on_cut(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        event.clipboardData.setData("text/plain", clipboard_text);
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function document_on_paste(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        clipboard_text = event.clipboardData.getData("text/plain");
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function window_on_gamepadconnected(event: any /* GamepadEvent */): void {
+    console.log("Gamepad connected at index %d: %s. %d buttons, %d axes.",
+    event.gamepad.index, event.gamepad.id,
+    event.gamepad.buttons.length, event.gamepad.axes.length);
+}
+
+function window_on_gamepaddisconnected(event: any /* GamepadEvent */): void {
+    console.log("Gamepad disconnected at index %d: %s.",
+    event.gamepad.index, event.gamepad.id);
+}
+
+function canvas_on_blur(event: FocusEvent): void {
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = false;
+        io.KeyShift = false;
+        io.KeyAlt = false;
+        io.KeySuper = false;
+        for (let i = 0; i < io.KeysDown.length; ++i) {
+            io.KeysDown[i] = false;
+        }
+        for (let i = 0; i < io.MouseDown.length; ++i) {
+            io.MouseDown[i] = false;
+        }
+    }
+}
+
+function canvas_on_keydown(event: KeyboardEvent): void {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = event.ctrlKey;
+        io.KeyShift = event.shiftKey;
+        io.KeyAlt = event.altKey;
+        io.KeySuper = event.metaKey;
+        ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+        io.KeysDown[event.keyCode] = true;
+        // forward to the keypress event
+        if (/*io.WantCaptureKeyboard ||*/ event.key === "Tab") {
+            event.preventDefault();
+        }
+    }
+}
+
+function canvas_on_keyup(event: KeyboardEvent): void  {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = event.ctrlKey;
+        io.KeyShift = event.shiftKey;
+        io.KeyAlt = event.altKey;
+        io.KeySuper = event.metaKey;
+        ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+        io.KeysDown[event.keyCode] = false;
+        if (io.WantCaptureKeyboard) {
+            event.preventDefault();
+        }
+    }
+}
+
+function canvas_on_keypress(event: KeyboardEvent): void  {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.AddInputCharacter(event.charCode);
+        if (io.WantCaptureKeyboard) {
+            event.preventDefault();
+        }
+    }
+}
+
+// MouseEvent.button
+// A number representing a given button:
+// 0: Main button pressed, usually the left button or the un-initialized state
+// 1: Auxiliary button pressed, usually the wheel button or the middle button (if present)
+// 2: Secondary button pressed, usually the right button
+// 3: Fourth button, typically the Browser Back button
+// 4: Fifth button, typically the Browser Forward button
+const mouse_button_map: number[] = [ 0, 2, 1, 3, 4 ];
+
+function canvas_on_contextmenu(event: Event): void  {
+    for (var io of contextIOs)
+    {
+        if (io.WantCaptureMouse) { event.preventDefault(); }
+    }
+}
+
+function canvas_on_wheel(event: WheelEvent): void  {
+    for (var io of contextIOs)
+    {
+        let scale: number = 1.0;
+        switch (event.deltaMode) {
+            case event.DOM_DELTA_PIXEL: scale = 0.01; break;
+            case event.DOM_DELTA_LINE: scale = 0.2; break;
+            case event.DOM_DELTA_PAGE: scale = 1.0; break;
+        }
+        io.MouseWheelH = event.deltaX * scale;
+        io.MouseWheel = -event.deltaY * scale; // Mouse wheel: 1 unit scrolls about 5 lines text.
+        if (io.WantCaptureMouse) {
+            event.preventDefault();
+        }
+    }
+}
+
+export function PrePIXIInit(): void
+{
+    PIXI.Renderer.registerPlugin("imgui_renderer", U.fromConstructor(ImGuiImplInternalRenderer));
+}
+
+export function Init(_app: PIXI.Application): void {
+    // Setup Dear ImGui binding
+    ImGui.IMGUI_CHECKVERSION();
+
+    if (typeof(document) !== "undefined") {
+        document.body.addEventListener("copy", document_on_copy);
+        document.body.addEventListener("cut", document_on_cut);
+        document.body.addEventListener("paste", document_on_paste);
+    }
+
+    if (typeof(window) !== "undefined") {
+        window.addEventListener("gamepadconnected", window_on_gamepadconnected);
+        window.addEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+    }
+
+    app = _app;
+    gl = (app.renderer as any).gl;
+    canvas = app.view;
+
+    gl.getExtension("EXT_color_buffer_float");
+
+    if (canvas !== null) {
+        canvas.style.touchAction = "none"; // Disable browser handling of all panning and zooming gestures.
+        canvas.addEventListener("blur", canvas_on_blur);
+        canvas.addEventListener("keydown", canvas_on_keydown);
+        canvas.addEventListener("keyup", canvas_on_keyup);
+        canvas.addEventListener("keypress", canvas_on_keypress);
+        canvas.addEventListener("contextmenu", canvas_on_contextmenu);
+        canvas.addEventListener("wheel", canvas_on_wheel);
+    }
+
+    CreateDeviceObjects();
+}
+
+export function Shutdown(): void {
+    DestroyDeviceObjects();
+
+    if (canvas !== null) {
+        canvas.removeEventListener("blur", canvas_on_blur);
+        canvas.removeEventListener("keydown", canvas_on_keydown);
+        canvas.removeEventListener("keyup", canvas_on_keyup);
+        canvas.removeEventListener("keypress", canvas_on_keypress);
+        canvas.removeEventListener("contextmenu", canvas_on_contextmenu);
+        canvas.removeEventListener("wheel", canvas_on_wheel);
+    }
+
+    app = null;
+    canvas = null;
+
+    if (typeof(window) !== "undefined") {
+        window.removeEventListener("gamepadconnected", window_on_gamepadconnected);
+        window.removeEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+    }
+
+    if (typeof(document) !== "undefined") {
+        document.body.removeEventListener("copy", document_on_copy);
+        document.body.removeEventListener("cut", document_on_cut);
+        document.body.removeEventListener("paste", document_on_paste);
+    }
+}
+
+function CreateFontsTexture(): void {
+    const io = ImGui.GetIO();
+
+    // Backup GL state
+    const last_texture: WebGLTexture | null = gl && gl.getParameter(gl.TEXTURE_BINDING_2D);
+
+    // Build texture atlas
+    // const width: number = 256;
+    // const height: number = 256;
+    // const pixels: Uint8Array = new Uint8Array(4 * width * height).fill(0xff);
+    const { width, height, pixels } = io.Fonts.GetTexDataAsRGBA32();   // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+    // console.log(`font texture ${width} x ${height} @ ${pixels.length}`);
+
+    // Upload texture to graphics system
+    g_FontTexture = gl && gl.createTexture();
+    gl && gl.bindTexture(gl.TEXTURE_2D, g_FontTexture);
+    gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+    gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+    // gl && gl.pixelStorei(gl.UNPACK_ROW_LENGTH); // WebGL2
+    gl && gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+
+    // Store our identifier
+    io.Fonts.TexID = g_FontTexture || { foo: "bar" };
+    // console.log("font texture id", g_FontTexture);
+
+    // Restore modified GL state
+    gl && last_texture && gl.bindTexture(gl.TEXTURE_2D, last_texture);
+}
+
+function DestroyFontsTexture(): void {
+    const io = ImGui.GetIO();
+    io.Fonts.TexID = null;
+    gl && gl.deleteTexture(g_FontTexture); g_FontTexture = null;
+}
+
+function CreateDeviceObjects(): void {
+    const vertex_shader: string[] = [
+        "#version 300 es",
+        "uniform mat4 ProjMtx;",
+        "in vec2 Position;",
+        "in vec2 UV;",
+        "in vec4 Color;",
+        "out vec2 Frag_UV;",
+        "out vec4 Frag_Color;",
+        "void main() {",
+        "	Frag_UV = UV;",
+        "	Frag_Color = Color;",
+        "	gl_Position = ProjMtx * vec4(Position.xy,0,1);",
+        "}",
+    ];
+
+    const fragment_shader: string[] = [
+        "#version 300 es",
+        "precision mediump float;", // WebGL requires precision specifiers
+        "uniform sampler2D Texture;",
+        "in vec2 Frag_UV;",
+        "in vec4 Frag_Color;",
+        "out vec4 OutColor;",
+        "void main() {",
+        "	OutColor = Frag_Color * texture(Texture, Frag_UV);",
+        "}",
+    ];
+
+    g_ShaderHandle = gl && gl.createProgram();
+    g_VertHandle = gl && gl.createShader(gl.VERTEX_SHADER);
+    g_FragHandle = gl && gl.createShader(gl.FRAGMENT_SHADER);
+    gl && gl.shaderSource(g_VertHandle as WebGLShader, vertex_shader.join("\n"));
+    gl && gl.shaderSource(g_FragHandle as WebGLShader, fragment_shader.join("\n"));
+    gl && gl.compileShader(g_VertHandle as WebGLShader);
+    gl && gl.compileShader(g_FragHandle as WebGLShader);
+    gl && gl.attachShader(g_ShaderHandle as WebGLProgram, g_VertHandle as WebGLShader);
+    gl && gl.attachShader(g_ShaderHandle as WebGLProgram, g_FragHandle as WebGLShader);
+    gl && gl.linkProgram(g_ShaderHandle as WebGLProgram);
+
+    g_AttribLocationTex = gl && gl.getUniformLocation(g_ShaderHandle as WebGLProgram, "Texture");
+    g_AttribLocationProjMtx = gl && gl.getUniformLocation(g_ShaderHandle as WebGLProgram, "ProjMtx");
+    g_AttribLocationPosition = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "Position") || 0;
+    g_AttribLocationUV = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "UV") || 0;
+    g_AttribLocationColor = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "Color") || 0;
+
+    g_VaoHandle = gl && gl.createVertexArray();
+    g_VboHandle = gl && gl.createBuffer();
+    g_ElementsHandle = gl && gl.createBuffer();
+
+}
+
+function DestroyDeviceObjects(): void {
+    DestroyFontsTexture();
+
+    gl && gl.deleteVertexArray(g_VaoHandle); g_VaoHandle = null;
+    gl && gl.deleteBuffer(g_VboHandle); g_VboHandle = null;
+    gl && gl.deleteBuffer(g_ElementsHandle); g_ElementsHandle = null;
+
+    g_AttribLocationTex = null;
+    g_AttribLocationProjMtx = null;
+    g_AttribLocationPosition = -1;
+    g_AttribLocationUV = -1;
+    g_AttribLocationColor = -1;
+
+    gl && gl.deleteProgram(g_ShaderHandle); g_ShaderHandle = null;
+    gl && gl.deleteShader(g_VertHandle); g_VertHandle = null;
+    gl && gl.deleteShader(g_FragHandle); g_FragHandle = null;
+}
diff --git a/src/main.js b/src/main.js
index f763140..0c19249 100644
--- a/src/main.js
+++ b/src/main.js
@@ -1,4 +1,4 @@
-System.register(["../imgui-js/example/imgui_impl", "imgui-js"], function (exports_1, context_1) {
+System.register(["./imgui_impl", "imgui-js", "pixi.js", "./utils"], function (exports_1, context_1) {
     "use strict";
     var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
         return new (P || (P = Promise))(function (resolve, reject) {
@@ -8,7 +8,7 @@
             step((generator = generator.apply(thisArg, _arguments || [])).next());
         });
     };
-    var ImGui_Impl, ImGui, imgui_js_1, imgui_js_2, clearColor, windowOpen, text;
+    var ImGui_Impl, imgui_impl_1, ImGui, imgui_js_1, imgui_js_2, PIXI, U, clearColor;
     var __moduleName = context_1 && context_1.id;
     function main() {
         return __awaiter(this, void 0, void 0, function* () {
@@ -20,74 +20,88 @@
     function init() {
         console.log("init()");
         console.log("Total allocated space (uordblks) @ _init:", ImGui.bind.mallinfo().uordblks);
-        // Setup Dear ImGui binding
-        ImGui.IMGUI_CHECKVERSION();
-        ImGui.CreateContext();
-        const io = ImGui.GetIO();
-        io.ConfigFlags |= ImGui.ConfigFlags.NavEnableKeyboard; // Enable Keyboard Controls
-        // Setup style
-        ImGui.StyleColorsLight();
+        ImGui_Impl.PrePIXIInit();
+        let settings = { width: 1, height: 1, antialias: true, backgroundColor: U.vec2col(clearColor) };
+        let app = new PIXI.Application(settings);
         const output = document.getElementById("output") || document.body;
-        const canvas = document.createElement("canvas");
-        output.appendChild(canvas);
-        canvas.tabIndex = 1;
-        canvas.style.position = "absolute";
-        canvas.style.left = "0px";
-        canvas.style.right = "0px";
-        canvas.style.top = "0px";
-        canvas.style.bottom = "0px";
-        canvas.style.width = "100%";
-        canvas.style.height = "100%";
-        ImGui_Impl.Init(canvas);
-        window.requestAnimationFrame(loop);
+        output.appendChild(app.view);
+        app.view.tabIndex = 1;
+        app.view.style.position = "absolute";
+        app.view.style.left = "0px";
+        app.view.style.right = "0px";
+        app.view.style.top = "0px";
+        app.view.style.bottom = "0px";
+        app.view.style.width = "100%";
+        app.view.style.height = "100%";
+        ImGui_Impl.Init(app);
+        app.ticker.add((deltaTime) => {
+            const dt = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+            app.render();
+        });
+        let resizeFunc = function () {
+            app.renderer.resize(window.innerWidth, window.innerHeight);
+        };
+        let bg = new PIXI.Graphics();
+        bg.beginFill(0xFF0000);
+        bg.drawRect(100, 100, 300, 300);
+        bg.endFill();
+        let styleCb = () => { ImGui.StyleColorsLight(); };
+        const imgui = new imgui_impl_1.ImGuiWindow(512, 512, makeUpdate());
+        const imgui2 = new imgui_impl_1.ImGuiWindow(512, 512, makeUpdate2());
+        imgui2.x = 200;
+        imgui2.y = 400;
+        imgui.withContext(styleCb);
+        imgui2.withContext(styleCb);
+        app.stage.addChild(imgui);
+        app.stage.addChild(bg);
+        app.stage.addChild(imgui2);
+        window.onresize = resizeFunc;
+        resizeFunc();
     }
-    function render(timeElapsed) {
-        ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(600, 400), ImGui.ImGuiCond.Always);
-        ImGui.Begin("Test Window", (_ = windowOpen) => windowOpen = _, 0);
-        if (ImGui.Button("Add Text")) {
-            text += "A";
-        }
-        ImGui.Text(text);
-        ImGui.End();
+    function makeUpdate() {
+        let text = "text";
+        return (timeElapsed) => {
+            ImGui.SetNextWindowPos(new imgui_js_2.ImVec2(0, 0));
+            ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(500, 500), ImGui.ImGuiCond.Always);
+            ImGui.Begin("Test Window");
+            if (ImGui.Button("Add Text")) {
+                text += "A";
+            }
+            ImGui.Text(text);
+            ImGui.End();
+        };
     }
-    function loop(timeElapsed) {
-        ImGui_Impl.NewFrame(timeElapsed);
-        ImGui.NewFrame();
-        render(timeElapsed);
-        ImGui.EndFrame();
-        // Rendering
-        ImGui.Render();
-        const gl = ImGui_Impl.gl;
-        if (gl) {
-            gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
-            gl.clearColor(clearColor.x, clearColor.y, clearColor.z, clearColor.w);
-            gl.clear(gl.COLOR_BUFFER_BIT);
-            //gl.useProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound
-        }
-        const ctx = ImGui_Impl.ctx;
-        if (ctx) {
-            // ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-            ctx.fillStyle = `rgba(${clearColor.x * 0xff}, ${clearColor.y * 0xff}, ${clearColor.z * 0xff}, ${clearColor.w})`;
-            ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-        }
-        ImGui_Impl.RenderDrawData(ImGui.GetDrawData());
-        window.requestAnimationFrame(loop);
+    function makeUpdate2() {
+        let text = "";
+        return (timeElapsed) => {
+            ImGui.SetNextWindowPos(new imgui_js_2.ImVec2(0, 0));
+            ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(500, 500), ImGui.ImGuiCond.Always);
+            ImGui.Begin("Test Window 2");
+            ImGui.InputText("Input: ", (_ = text) => text = _);
+            ImGui.Text(text);
+            ImGui.End();
+        };
     }
     return {
         setters: [
             function (ImGui_Impl_1) {
                 ImGui_Impl = ImGui_Impl_1;
+                imgui_impl_1 = ImGui_Impl_1;
             },
             function (ImGui_1) {
                 ImGui = ImGui_1;
                 imgui_js_1 = ImGui_1;
                 imgui_js_2 = ImGui_1;
+            },
+            function (PIXI_1) {
+                PIXI = PIXI_1;
+            },
+            function (U_1) {
+                U = U_1;
             }
         ],
         execute: function () {
             clearColor = new imgui_js_1.ImVec4(0.7, 0.9, 1, 1);
-            windowOpen = true;
-            text = "text";
             (function () {
                 if (document.readyState == "complete") {
                     main();
diff --git a/src/main.js.map b/src/main.js.map
index d10898e..c4ec491 100644
--- a/src/main.js.map
+++ b/src/main.js.map
@@ -1 +1 @@
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\ No newline at end of file
+{"version":3,"file":"main.js","sourceRoot":"","sources":["main.ts"],"names":[],"mappings":";;;;;;;;;;;;IASA,SAAe,IAAI;;YAEf,OAAO,CAAC,GAAG,CAAC,QAAQ,CAAC,CAAC;YACtB,MAAM,KAAK,CAAC,OAAO,EAAE,CAAC;YACtB,MAAM,CAAC,qBAAqB,CAAC,IAAI,CAAC,CAAC;QACvC,CAAC;KAAA;IAGD,SAAS,IAAI;QAET,OAAO,CAAC,GAAG,CAAC,QAAQ,CAAC,CAAC;QACtB,OAAO,CAAC,GAAG,CAAC,2CAA2C,EAAE,KAAK,CAAC,IAAI,CAAC,QAAQ,EAAE,CAAC,QAAQ,CAAC,CAAC;QAEzF,UAAU,CAAC,WAAW,EAAE,CAAC;QAEzB,IAAI,QAAQ,GAAG,EAAE,KAAK,EAAE,CAAC,EAAE,MAAM,EAAE,CAAC,EAAE,SAAS,EAAE,IAAI,EAAE,eAAe,EAAE,CAAC,CAAC,OAAO,CAAC,UAAU,CAAC,EAAE,CAAC;QAEhG,IAAI,GAAG,GAAsB,IAAI,IAAI,CAAC,WAAW,CAAC,QAAQ,CAAC,CAAC;QAE5D,MAAM,MAAM,GAAgB,QAAQ,CAAC,cAAc,CAAC,QAAQ,CAAC,IAAI,QAAQ,CAAC,IAAI,CAAC;QAC/E,MAAM,CAAC,WAAW,CAAC,GAAG,CAAC,IAAI,CAAC,CAAC;QAC7B,GAAG,CAAC,IAAI,CAAC,QAAQ,GAAG,CAAC,CAAC;QACtB,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,QAAQ,GAAG,UAAU,CAAC;QACrC,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,IAAI,GAAG,KAAK,CAAC;QAC5B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,KAAK,GAAG,KAAK,CAAC;QAC7B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,GAAG,GAAG,KAAK,CAAC;QAC3B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,MAAM,GAAG,KAAK,CAAC;QAC9B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,KAAK,GAAG,MAAM,CAAC;QAC9B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,MAAM,GAAG,MAAM,CAAC;QAE/B,UAAU,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC;QAErB,GAAG,CAAC,MAAM,CAAC,GAAG,CACV,CAAC,SAAiB,EAAE,EAAE;YAElB,MAAM,EAAE,GAAW,SAAS,GAAG,CAAC,GAAG,CAAC,IAAI,GAAG,IAAI,CAAC,QAAQ,CAAC,WAAW,CAAC,CAAC;YAEtE,GAAG,CAAC,MAAM,EAAE,CAAC;QACjB,CAAC,CACJ,CAAC;QAGF,IAAI,UAAU,GAAG;YAEb,GAAG,CAAC,QAAQ,CAAC,MAAM,CAAC,MAAM,CAAC,UAAU,EAAE,MAAM,CAAC,WAAW,CAAC,CAAC;QAC/D,CAAC,CAAC;QAEF,IAAI,EAAE,GAAkB,IAAI,IAAI,CAAC,QAAQ,EAAE,CAAC;QAC5C,EAAE,CAAC,SAAS,CAAC,QAAQ,CAAC,CAAC;QACvB,EAAE,CAAC,QAAQ,CAAC,GAAG,EAAE,GAAG,EAAE,GAAG,EAAE,GAAG,CAAC,CAAC;QAChC,EAAE,CAAC,OAAO,EAAE,CAAC;QAEb,IAAI,OAAO,GAAe,GAAG,EAAE,GAAG,KAAK,CAAC,gBAAgB,EAAE,CAAC,CAAC,CAAC,CAAC;QAE9D,MAAM,KAAK,GAAgB,IAAI,wBAAW,CAAC,GAAG,EAAE,GAAG,EAAE,UAAU,EAAE,CAAC,CAAC;QACnE,MAAM,MAAM,GAAgB,IAAI,wBAAW,CAAC,GAAG,EAAE,GAAG,EAAE,WAAW,EAAE,CAAC,CAAC;QACrE,MAAM,CAAC,CAAC,GAAG,GAAG,CAAC;QACf,MAAM,CAAC,CAAC,GAAG,GAAG,CAAC;QAEf,KAAK,CAAC,WAAW,CAAC,OAAO,CAAC,CAAC;QAC3B,MAAM,CAAC,WAAW,CAAC,OAAO,CAAC,CAAC;QAE5B,GAAG,CAAC,KAAK,CAAC,QAAQ,CAAC,KAAK,CAAC,CAAC;QAC1B,GAAG,CAAC,KAAK,CAAC,QAAQ,CAAC,EAAE,CAAC,CAAC;QACvB,GAAG,CAAC,KAAK,CAAC,QAAQ,CAAC,MAAM,CAAC,CAAC;QAE3B,MAAM,CAAC,QAAQ,GAAG,UAAU,CAAC;QAC7B,UAAU,EAAE,CAAC;IACjB,CAAC;IAED,SAAS,UAAU;QAEf,IAAI,IAAI,GAAW,MAAM,CAAC;QAC1B,OAAO,CAAC,WAAmB,EAAE,EAAE;YAE3B,KAAK,CAAC,gBAAgB,CAAC,IAAI,iBAAM,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;YACzC,KAAK,CAAC,iBAAiB,CAAC,IAAI,iBAAM,CAAC,GAAG,EAAE,GAAG,CAAC,EAAE,KAAK,CAAC,SAAS,CAAC,MAAM,CAAC,CAAC;YACtE,KAAK,CAAC,KAAK,CAAC,aAAa,CAAC,CAAC;YAC3B,IAAI,KAAK,CAAC,MAAM,CAAC,UAAU,CAAC,EAC5B;gBACI,IAAI,IAAI,GAAG,CAAC;aACf;YACD,KAAK,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;YACjB,KAAK,CAAC,GAAG,EAAE,CAAC;QAChB,CAAC,CAAC;IACN,CAAC;IAED,SAAS,WAAW;QAEhB,IAAI,IAAI,GAAU,EAAE,CAAC;QACrB,OAAO,CAAC,WAAmB,EAAE,EAAE;YAE3B,KAAK,CAAC,gBAAgB,CAAC,IAAI,iBAAM,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;YACzC,KAAK,CAAC,iBAAiB,CAAC,IAAI,iBAAM,CAAC,GAAG,EAAE,GAAG,CAAC,EAAE,KAAK,CAAC,SAAS,CAAC,MAAM,CAAC,CAAC;YACtE,KAAK,CAAC,KAAK,CAAC,eAAe,CAAC,CAAC;YAC7B,KAAK,CAAC,SAAS,CAAC,SAAS,EAAE,CAAC,CAAC,GAAG,IAAI,EAAE,EAAE,CAAC,IAAI,GAAG,CAAC,CAAC,CAAC;YACnD,KAAK,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;YACjB,KAAK,CAAC,GAAG,EAAE,CAAC;QAChB,CAAC,CAAC;IACN,CAAC;;;;;;;;;;;;;;;;;;;;YA5FK,UAAU,GAAU,IAAI,iBAAM,CAAC,GAAG,EAAE,GAAG,EAAE,CAAC,EAAE,CAAC,CAAC,CAAC;YA8FrD,CAAC;gBAEI,IAAI,QAAQ,CAAC,UAAU,IAAI,UAAU,EACrC;oBACI,IAAI,EAAE,CAAC;iBACV;qBAED;oBACI,MAAM,CAAC,MAAM,GAAG,IAAI,CAAC;iBACxB;YACL,CAAC,CAAC,EAAE,CAAC;QACN,CAAC"}
\ No newline at end of file
diff --git a/src/main.ts b/src/main.ts
index fcf1b3f..026aae6 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,8 +1,11 @@
-import * as ImGui_Impl from "../imgui-js/example/imgui_impl";
+import * as ImGui_Impl from "./imgui_impl";
+import { ImGuiWindow } from "./imgui_impl";
 import * as ImGui from "imgui-js";
 import { ImGuiIO } from "imgui-js"
 import { ImVec4 } from "imgui-js";
 import { ImVec2 } from "imgui-js";
+import * as PIXI from "pixi.js";
+import * as U from "./utils";
 
 async function main(): Promise<void>
 {
@@ -11,82 +14,98 @@
     window.requestAnimationFrame(init);
 }
 
+const clearColor:ImVec4 = new ImVec4(0.7, 0.9, 1, 1);
 function init(): void
 {
     console.log("init()");
     console.log("Total allocated space (uordblks) @ _init:", ImGui.bind.mallinfo().uordblks);
 
-    // Setup Dear ImGui binding
-    ImGui.IMGUI_CHECKVERSION();
-    ImGui.CreateContext();
+    ImGui_Impl.PrePIXIInit();
 
-    const io: ImGuiIO = ImGui.GetIO();
-    io.ConfigFlags |= ImGui.ConfigFlags.NavEnableKeyboard;  // Enable Keyboard Controls
+    let settings = { width: 1, height: 1, antialias: true, backgroundColor: U.vec2col(clearColor) };
 
-    // Setup style
-    ImGui.StyleColorsLight();
+    let app : PIXI.Application = new PIXI.Application(settings);
 
     const output: HTMLElement = document.getElementById("output") || document.body;
-    const canvas: HTMLCanvasElement = document.createElement("canvas");
-    output.appendChild(canvas);
-    canvas.tabIndex = 1;
-    canvas.style.position = "absolute";
-    canvas.style.left = "0px";
-    canvas.style.right = "0px";
-    canvas.style.top = "0px";
-    canvas.style.bottom = "0px";
-    canvas.style.width = "100%";
-    canvas.style.height = "100%";
-    ImGui_Impl.Init(canvas);
+    output.appendChild(app.view);
+    app.view.tabIndex = 1;
+    app.view.style.position = "absolute";
+    app.view.style.left = "0px";
+    app.view.style.right = "0px";
+    app.view.style.top = "0px";
+    app.view.style.bottom = "0px";
+    app.view.style.width = "100%";
+    app.view.style.height = "100%";
 
-    window.requestAnimationFrame(loop);
-}
+    ImGui_Impl.Init(app);
 
-const clearColor:ImVec4 = new ImVec4(0.7, 0.9, 1, 1);
-let windowOpen: boolean = true;
-let text: string = "text";
-function render(timeElapsed: number): void
-{
-    ImGui.SetNextWindowSize(new ImVec2(600, 400), ImGui.ImGuiCond.Always);
-    ImGui.Begin("Test Window", (_ = windowOpen) => windowOpen = _, 0); 
-    if (ImGui.Button("Add Text"))
+    app.ticker.add(
+        (deltaTime: number) =>
+        {
+            const dt: number = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+
+            app.render();
+        }
+    );
+
+
+    let resizeFunc = function()
     {
-        text += "A";
-    }
-    ImGui.Text(text);
-    ImGui.End();
+        app.renderer.resize(window.innerWidth, window.innerHeight);
+    };
+
+    let bg: PIXI.Graphics = new PIXI.Graphics();
+    bg.beginFill(0xFF0000);
+    bg.drawRect(100, 100, 300, 300);
+    bg.endFill();
+
+    let styleCb: () => void = () => { ImGui.StyleColorsLight(); };
+
+    const imgui: ImGuiWindow = new ImGuiWindow(512, 512, makeUpdate());
+    const imgui2: ImGuiWindow = new ImGuiWindow(512, 512, makeUpdate2());
+    imgui2.x = 200;
+    imgui2.y = 400;
+
+    imgui.withContext(styleCb);
+    imgui2.withContext(styleCb);
+    
+    app.stage.addChild(imgui);
+    app.stage.addChild(bg);
+    app.stage.addChild(imgui2);
+
+    window.onresize = resizeFunc;
+    resizeFunc();
 }
 
-
-function loop(timeElapsed: number): void
+function makeUpdate(): (timeElapsed: number) => void
 {
-    ImGui_Impl.NewFrame(timeElapsed);
-    ImGui.NewFrame();
+    let text: string = "text";
+    return (timeElapsed: number) =>
+    {
+        ImGui.SetNextWindowPos(new ImVec2(0, 0));
+        ImGui.SetNextWindowSize(new ImVec2(500, 500), ImGui.ImGuiCond.Always);
+        ImGui.Begin("Test Window"); 
+        if (ImGui.Button("Add Text"))
+        {
+            text += "A";
+        }
+        ImGui.Text(text);
+        ImGui.End();
+    };
+}
 
-    render(timeElapsed);
-
-    ImGui.EndFrame();
-
-    // Rendering
-    ImGui.Render();
-    const gl: WebGLRenderingContext | null = ImGui_Impl.gl;
-    if (gl) {
-        gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
-        gl.clearColor(clearColor.x, clearColor.y, clearColor.z, clearColor.w);
-        gl.clear(gl.COLOR_BUFFER_BIT);
-        //gl.useProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound
-    }
-
-    const ctx: CanvasRenderingContext2D | null = ImGui_Impl.ctx;
-    if (ctx) {
-        // ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-        ctx.fillStyle = `rgba(${clearColor.x * 0xff}, ${clearColor.y * 0xff}, ${clearColor.z * 0xff}, ${clearColor.w})`;
-        ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-    }
-
-    ImGui_Impl.RenderDrawData(ImGui.GetDrawData());
-
-    window.requestAnimationFrame(loop);
+function makeUpdate2(): (timeElapsed: number) => void
+{
+    let text:string = "";
+    return (timeElapsed: number) =>
+    {
+        ImGui.SetNextWindowPos(new ImVec2(0, 0));
+        ImGui.SetNextWindowSize(new ImVec2(500, 500), ImGui.ImGuiCond.Always);
+        ImGui.Begin("Test Window 2"); 
+        ImGui.InputText("Input: ", (_ = text) => text = _);
+        ImGui.Text(text);
+        ImGui.End();
+    };
 }
 
 (function()
diff --git a/src/utils.js b/src/utils.js
new file mode 100644
index 0000000..c91e062
--- /dev/null
+++ b/src/utils.js
@@ -0,0 +1,20 @@
+System.register([], function (exports_1, context_1) {
+    "use strict";
+    var __moduleName = context_1 && context_1.id;
+    function fromConstructor(constr) {
+        return constr;
+    }
+    exports_1("fromConstructor", fromConstructor);
+    function vec2col(v) {
+        return (((v.x * 255) & 0xFF) << 16) +
+            (((v.y * 255) & 0xFF) << 8) +
+            (((v.z * 255) & 0xFF) << 0);
+    }
+    exports_1("vec2col", vec2col);
+    return {
+        setters: [],
+        execute: function () {
+        }
+    };
+});
+//# sourceMappingURL=utils.js.map
\ No newline at end of file
diff --git a/src/utils.js.map b/src/utils.js.map
new file mode 100644
index 0000000..2d50463
--- /dev/null
+++ b/src/utils.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"utils.js","sourceRoot":"","sources":["utils.ts"],"names":[],"mappings":";;;IAEA,SAAgB,eAAe,CAAC,MAAW;QAEvC,OAAO,MAA6C,CAAA;IACxD,CAAC;;IAED,SAAgB,OAAO,CAAC,CAAS;QAE7B,OAAO,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,GAAG,GAAG,CAAC,GAAG,IAAI,CAAC,IAAI,EAAE,CAAC;YAC5B,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,GAAG,GAAG,CAAC,GAAG,IAAI,CAAC,IAAI,CAAC,CAAC;YAC3B,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,GAAG,GAAG,CAAC,GAAG,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC;IACvC,CAAC;;;;;QACD,CAAC"}
\ No newline at end of file

diff --git a/.gitmodules b/.gitmodules
index d6b45d7..fc2be7a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,7 @@
 [submodule "emsdk"]
 	path = emsdk
 	url = https://github.com/emscripten-core/emsdk.git
+	ignore = untracked
+[submodule "pixi.js"]
+	path = pixi.js
+	url = https://git.mhack.io/git/mark/pixi.js.git
diff --git a/imgui-js b/imgui-js
index 9f694ef..9536eca 160000
--- a/imgui-js
+++ b/imgui-js
@@ -1 +1 @@
-Subproject commit 9f694ef7e8e7251c32f7811ba39938951a12097a
+Subproject commit 9536ecad287eb76812087cd3fee1aaacb448c027
diff --git a/indexdev.html b/indexdev.html
index 2f6c3b3..3d27479 100644
--- a/indexdev.html
+++ b/indexdev.html
@@ -2,22 +2,16 @@
     <head>
         <title>7GUI</title>
         <script src="node_modules/systemjs/dist/system.js"></script>
-        <!--
-        <script type="systemjs-importmap">
-            {
-                "imports": {
-                    "imgui-js/example/imgui_impl": "imgui-js/dist/imgui_impl.umd.js"
-                }
-            }
-        </script>
-        -->
         <script>
             System.config({
                 map: {
-                    "imgui-js": "./imgui-js"
+                    "imgui-js": "./imgui-js",
+                    "pixi.js": "./node_modules/pixi.js"
                 },
                 packages: {
-                    "imgui-js": { main: "imgui.js", }
+                    "imgui-js": { main: "imgui.js" },
+                    "pixi.js": { main: "dist/pixi.js" },
+                    "./": { map: { "src/utils": "./src/utils.js", "src/imgui_impl": "./src/imgui_impl.js" } }
                 }
             });
             System.import("./src/main.js");
diff --git a/package-lock.json b/package-lock.json
index ed52494..8bda7e5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,16 +4,34 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@pixi/constants": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/@pixi/constants/-/constants-5.1.0.tgz",
+      "integrity": "sha512-86cogDvjF9yNvmxeizwkIhA0Kl2z3gUSWMf2daYx903dzyje7fwkzRrKLnqDUn6vSAxRXiska0DMJhwYsIC29w=="
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+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz",
+      "integrity": "sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==",
       "dev": true
     },
     "prr": {
@@ -4607,6 +5077,16 @@
         "safe-buffer": "^5.1.2"
       }
     },
+    "punycode": {
+      "version": "1.3.2",
+      "resolved": "https://registry.npmjs.org/punycode/-/punycode-1.3.2.tgz",
+      "integrity": "sha1-llOgNvt8HuQjQvIyXM7v6jkmxI0="
+    },
+    "querystring": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/querystring/-/querystring-0.2.0.tgz",
+      "integrity": "sha1-sgmEkgO7Jd+CDadW50cAWHhSFiA="
+    },
     "randombytes": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/randombytes/-/randombytes-2.1.0.tgz",
@@ -4645,17 +5125,6 @@
         "safe-buffer": "~5.1.1",
         "string_decoder": "~1.1.1",
         "util-deprecate": "~1.0.1"
-      },
-      "dependencies": {
-        "string_decoder": {
-          "version": "1.1.1",
-          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
-          "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
-          "dev": true,
-          "requires": {
-            "safe-buffer": "~5.1.0"
-          }
-        }
       }
     },
     "readdirp": {
@@ -4698,9 +5167,9 @@
       "dev": true
     },
     "resolve": {
-      "version": "1.11.0",
-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.11.0.tgz",
-      "integrity": "sha512-WL2pBDjqT6pGUNSUzMw00o4T7If+z4H2x3Gz893WoUQ5KW8Vr9txp00ykiP16VBaZF5+j/OcXJHZ9+PCvdiDKw==",
+      "version": "1.11.1",
+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.11.1.tgz",
+      "integrity": "sha512-vIpgF6wfuJOZI7KKKSP+HmiKggadPQAdsp5HiC1mvqnfp0gF1vdwgBWZIdrVft9pgqoMFQN+R7BSWZiBxx+BBw==",
       "dev": true,
       "requires": {
         "path-parse": "^1.0.6"
@@ -4712,6 +5181,15 @@
       "integrity": "sha1-LGN/53yJOv0qZj/iGqkIAGjiBSo=",
       "dev": true
     },
+    "resource-loader": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/resource-loader/-/resource-loader-3.0.1.tgz",
+      "integrity": "sha512-fBuCRbEHdLCI1eglzQhUv9Rrdcmqkydr1r6uHE2cYHvRBrcLXeSmbE/qI/urFt8rPr/IGxir3BUwM5kUK8XoyA==",
+      "requires": {
+        "mini-signals": "^1.2.0",
+        "parse-uri": "^1.0.0"
+      }
+    },
     "ret": {
       "version": "0.1.15",
       "resolved": "https://registry.npmjs.org/ret/-/ret-0.1.15.tgz",
@@ -4729,33 +5207,26 @@
       }
     },
     "rollup": {
-      "version": "1.15.6",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.15.6.tgz",
-      "integrity": "sha512-s3Vn3QJQ5YVFfIG4nXoG9VdL1I37IZsft+4ZyeBhxE0df1kCFz9e+4bEAbR4mKH3pvBO9e9xjdxWPhhIp0r9ow==",
+      "version": "1.17.0",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.17.0.tgz",
+      "integrity": "sha512-k/j1m0NIsI4SYgCJR4MWPstGJOWfJyd6gycKoMhyoKPVXxm+L49XtbUwZyFsrSU2YXsOkM4u1ll9CS/ZgJBUpw==",
       "requires": {
         "@types/estree": "0.0.39",
-        "@types/node": "^12.0.8",
-        "acorn": "^6.1.1"
-      },
-      "dependencies": {
-        "@types/node": {
-          "version": "12.0.8",
-          "resolved": "https://registry.npmjs.org/@types/node/-/node-12.0.8.tgz",
-          "integrity": "sha512-b8bbUOTwzIY3V5vDTY1fIJ+ePKDUBqt2hC2woVGotdQQhG/2Sh62HOKHrT7ab+VerXAcPyAiTEipPu/FsreUtg=="
-        }
+        "@types/node": "^12.6.2",
+        "acorn": "^6.2.0"
       }
     },
     "rollup-plugin-commonjs": {
-      "version": "10.0.0",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.0.tgz",
-      "integrity": "sha512-B8MoX5GRpj3kW4+YaFO/di2JsZkBxNjVmZ9LWjUoTAjq8N9wc7HObMXPsrvolVV9JXVtYSscflXM14A19dXPNQ==",
+      "version": "10.0.1",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.1.tgz",
+      "integrity": "sha512-x0PcCVdEc4J8igv1qe2vttz8JKAKcTs3wfIA3L8xEty3VzxgORLrzZrNWaVMc+pBC4U3aDOb9BnWLAQ8J11vkA==",
       "dev": true,
       "requires": {
-        "estree-walker": "^0.6.0",
+        "estree-walker": "^0.6.1",
         "is-reference": "^1.1.2",
         "magic-string": "^0.25.2",
-        "resolve": "^1.10.1",
-        "rollup-pluginutils": "^2.7.0"
+        "resolve": "^1.11.0",
+        "rollup-pluginutils": "^2.8.1"
       }
     },
     "rollup-plugin-node-builtins": {
@@ -4771,16 +5242,16 @@
       }
     },
     "rollup-plugin-node-resolve": {
-      "version": "5.0.3",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.0.3.tgz",
-      "integrity": "sha512-Mhhmf0x493xgUPEsRELnU1VM+4+WO82knWkAbZ0d2DvZQZJMbhzyQK/hqtpVscoRru1EqlK3TM1kK9ro469wPw==",
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.2.0.tgz",
+      "integrity": "sha512-jUlyaDXts7TW2CqQ4GaO5VJ4PwwaV8VUGA7+km3n6k6xtOEacf61u0VXwN80phY/evMcaS+9eIeJ9MOyDxt5Zw==",
       "dev": true,
       "requires": {
         "@types/resolve": "0.0.8",
         "builtin-modules": "^3.1.0",
         "is-module": "^1.0.0",
-        "resolve": "^1.11.0",
-        "rollup-pluginutils": "^2.8.0"
+        "resolve": "^1.11.1",
+        "rollup-pluginutils": "^2.8.1"
       }
     },
     "rollup-plugin-typescript2": {
@@ -4846,35 +5317,6 @@
       "integrity": "sha1-uYSPJdbPNjMwc+ye+IVtQvEjPlI=",
       "dev": true
     },
-    "send": {
-      "version": "0.17.1",
-      "resolved": "https://registry.npmjs.org/send/-/send-0.17.1.tgz",
-      "integrity": "sha512-BsVKsiGcQMFwT8UxypobUKyv7irCNRHk1T0G680vk88yf6LBByGcZJOTJCrTP2xVN6yI+XjPJcNuE3V4fT9sAg==",
-      "dev": true,
-      "requires": {
-        "debug": "2.6.9",
-        "depd": "~1.1.2",
-        "destroy": "~1.0.4",
-        "encodeurl": "~1.0.2",
-        "escape-html": "~1.0.3",
-        "etag": "~1.8.1",
-        "fresh": "0.5.2",
-        "http-errors": "~1.7.2",
-        "mime": "1.6.0",
-        "ms": "2.1.1",
-        "on-finished": "~2.3.0",
-        "range-parser": "~1.2.1",
-        "statuses": "~1.5.0"
-      },
-      "dependencies": {
-        "ms": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
-          "dev": true
-        }
-      }
-    },
     "serve-index": {
       "version": "1.9.1",
       "resolved": "https://registry.npmjs.org/serve-index/-/serve-index-1.9.1.tgz",
@@ -4902,6 +5344,12 @@
             "statuses": ">= 1.4.0 < 2"
           }
         },
+        "inherits": {
+          "version": "2.0.3",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+          "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+          "dev": true
+        },
         "setprototypeof": {
           "version": "1.1.0",
           "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
@@ -4911,9 +5359,9 @@
       }
     },
     "set-value": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.0.tgz",
-      "integrity": "sha512-hw0yxk9GT/Hr5yJEYnHNKYXkIA8mVJgd9ditYZCe16ZczcaELYYcfvaXesNACk2O8O0nTiPQcQhGUQj8JLzeeg==",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.1.tgz",
+      "integrity": "sha512-JxHc1weCN68wRY0fhCoXpyK55m/XPHafOmK4UWD7m2CI14GMcFypt4w/0+NV5f/ZMby2F6S2wwA7fgynh9gWSw==",
       "dev": true,
       "requires": {
         "extend-shallow": "^2.0.1",
@@ -5082,9 +5530,9 @@
       "dev": true
     },
     "sourcemap-codec": {
-      "version": "1.4.4",
-      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.4.tgz",
-      "integrity": "sha512-CYAPYdBu34781kLHkaW3m6b/uUSyMOC2R61gcYMWooeuaGtjof86ZA/8T+qVPPt7np1085CR9hmMGrySwEc8Xg==",
+      "version": "1.4.6",
+      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.6.tgz",
+      "integrity": "sha512-1ZooVLYFxC448piVLBbtOxFcXwnymH9oUF8nRd3CuYDVvkRBxRl6pB4Mtas5a4drtL+E8LDgFkQNcgIw6tc8Hg==",
       "dev": true
     },
     "split": {
@@ -5148,10 +5596,13 @@
       "dev": true
     },
     "string_decoder": {
-      "version": "0.10.31",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
-      "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
-      "dev": true
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "~5.1.0"
+      }
     },
     "systemjs": {
       "version": "0.21.6",
@@ -5231,44 +5682,21 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.5.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.2.tgz",
-      "integrity": "sha512-7KxJovlYhTX5RaRbUdkAXN1KUZ8PwWlTzQdHV6xNqvuFOs7+WBo10TQUqT19Q/Jz2hk5v9TQDIhyLhhJY4p5AA==",
+      "version": "3.5.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.3.tgz",
+      "integrity": "sha512-ACzBtm/PhXBDId6a6sDJfroT2pOWt/oOnk4/dElG5G33ZL776N3Y6/6bKZJBFpd+b05F3Ct9qDjMeJmRWtE2/g==",
       "dev": true
     },
     "union-value": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz",
-      "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",
+      "integrity": "sha512-tJfXmxMeWYnczCVs7XAEvIV7ieppALdyepWMkHkwciRpZraG/xwT+s2JN8+pr1+8jCRf80FFzvr+MpQeeoF4Xg==",
       "dev": true,
       "requires": {
         "arr-union": "^3.1.0",
         "get-value": "^2.0.6",
         "is-extendable": "^0.1.1",
-        "set-value": "^0.4.3"
-      },
-      "dependencies": {
-        "extend-shallow": {
-          "version": "2.0.1",
-          "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
-          "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
-          "dev": true,
-          "requires": {
-            "is-extendable": "^0.1.0"
-          }
-        },
-        "set-value": {
-          "version": "0.4.3",
-          "resolved": "https://registry.npmjs.org/set-value/-/set-value-0.4.3.tgz",
-          "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=",
-          "dev": true,
-          "requires": {
-            "extend-shallow": "^2.0.1",
-            "is-extendable": "^0.1.1",
-            "is-plain-object": "^2.0.1",
-            "to-object-path": "^0.3.0"
-          }
-        }
+        "set-value": "^2.0.1"
       }
     },
     "universalify": {
@@ -5341,6 +5769,15 @@
       "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
       "dev": true
     },
+    "url": {
+      "version": "0.11.0",
+      "resolved": "https://registry.npmjs.org/url/-/url-0.11.0.tgz",
+      "integrity": "sha1-ODjpfPxgUh63PFJajlW/3Z4uKPE=",
+      "requires": {
+        "punycode": "1.3.2",
+        "querystring": "0.2.0"
+      }
+    },
     "use": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
@@ -5372,12 +5809,13 @@
       "dev": true
     },
     "websocket-driver": {
-      "version": "0.7.0",
-      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.0.tgz",
-      "integrity": "sha1-DK+dLXVdk67gSdS90NP+LMoqJOs=",
+      "version": "0.7.3",
+      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.3.tgz",
+      "integrity": "sha512-bpxWlvbbB459Mlipc5GBzzZwhoZgGEZLuqPaR0INBGnPAY1vdBX6hPnoFXiw+3yWxDuHyQjO2oXTMyS8A5haFg==",
       "dev": true,
       "requires": {
-        "http-parser-js": ">=0.4.0",
+        "http-parser-js": ">=0.4.0 <0.4.11",
+        "safe-buffer": ">=5.1.0",
         "websocket-extensions": ">=0.1.1"
       }
     },
diff --git a/package.json b/package.json
index 07cf1ea..8aafc46 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,9 @@
     "build": "tsc",
     "rollup": "rollup -c",
     "watch": "npx live-server --open=index.html --watch='./*.html,./*.js'",
-    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./*.js'"
+    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./src/*.js'",
+    "pixi": "cd pixi.js && npm run local && cd .. && npm run pixi:install",
+    "pixi:install": "rm -rf node_modules/pixi.js && rm package-lock.json"
   },
   "repository": {
     "type": "git",
@@ -17,13 +19,15 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@types/systemjs": "^0.20.6",
+    "@types/webgl2": "0.0.5",
     "imgui-js": "file:./imgui-js",
+    "pixi.js": "file:pixi.js/bundles/pixi.js/pixi.js-5.1.4.tgz",
     "rollup": "^1.15.6",
     "systemjs": "^0.21.5"
   },
   "devDependencies": {
     "@types/node": "^12.0.0",
+    "@types/systemjs": "^0.20.6",
     "live-server": "^1.2.1",
     "rollup-plugin-commonjs": "^10.0.0",
     "rollup-plugin-node-builtins": "^2.1.2",
diff --git a/pixi.js b/pixi.js
new file mode 160000
index 0000000..1b78731
--- /dev/null
+++ b/pixi.js
@@ -0,0 +1 @@
+Subproject commit 1b78731948b57c635a2e65444c387eed31ec7428
diff --git a/session b/session
index bbf5582..06b9a8d 100644
--- a/session
+++ b/session
@@ -1,322 +1,62 @@
 let SessionLoad = 1
 if &cp | set nocp | endif
-let s:cpo_save=&cpo
-set cpo&vim
-imap <Nul> <C-Space>
-inoremap <expr> <Up> pumvisible() ? "\" : "\<Up>"
-inoremap <expr> <S-Tab> pumvisible() ? "\" : "\<S-Tab>"
-inoremap <expr> <Down> pumvisible() ? "\" : "\<Down>"
-nnoremap <silent>  :TmuxNavigateLeft
-nnoremap <silent> <NL> :TmuxNavigateDown
-nnoremap <silent>  :TmuxNavigateUp
-nnoremap <silent>  :TmuxNavigateRight
-nnoremap <silent>  :TmuxNavigatePrevious
-nnoremap \d :YcmShowDetailedDiagnostic
-vnoremap <silent> \c :call CopyMarkWithCursor("<", ">")
-nnoremap <silent> \c :set opfunc=OpSysCopyMarkg@
-vmap gx <Plug>NetrwBrowseXVis
-nmap gx <Plug>NetrwBrowseX
-vnoremap <silent> <Plug>NetrwBrowseXVis :call netrw#BrowseXVis()
-nnoremap <silent> <Plug>NetrwBrowseX :call netrw#BrowseX(expand((exists("g:netrw_gx")? g:netrw_gx : '<cfile>')),netrw#CheckIfRemote())
-inoremap <expr> 	 pumvisible() ? "\" : "\	"
-let &cpo=s:cpo_save
-unlet s:cpo_save
-set autoindent
-set backspace=indent,eol,start
-set completefunc=youcompleteme#CompleteFunc
-set completeopt=preview,menuone
-set cpoptions=aAceFsB
-set fileencodings=ucs-bom,utf-8,default,latin1
-set fillchars=vert:|,fold:-,vert:│
-set helplang=en
-set hidden
-set include=import_s.\\zs[^'\"]*\\ze
-set includeexpr=TsIncludeExpr(v:fname)
-set nomodeline
-set path=.,/usr/include,,,./node_modules/**,node_modules/**
-set ruler
-set runtimepath=~/.vim,~/.vim/bundle/JustDo,~/.vim/bundle/YouCompleteMe,~/.vim/bundle/vim-easymotion,~/.vim/bundle/vim-tmux-navigator,~/.vim/bundle/yats.vim,/var/lib/vim/addons,/usr/share/vim/vimfiles,/usr/share/vim/vim74,/usr/share/vim/vimfiles/after,/var/lib/vim/addons/after,~/.vim/after
-set sessionoptions=blank,buffers,folds,help,options,tabpages,winsize,sesdir
-set shortmess=filnxtToOc
-set suffixes=.bak,~,.swp,.o,.info,.aux,.log,.dvi,.bbl,.blg,.brf,.cb,.ind,.idx,.ilg,.inx,.out,.toc
-set suffixesadd=.ts
 let s:so_save = &so | let s:siso_save = &siso | set so=0 siso=0
 let v:this_session=expand("<sfile>:p")
 silent only
+silent tabonly
 exe "cd " . escape(expand("<sfile>:p:h"), ' ')
 if expand('%') == '' && !&modified && line('$') <= 1 && getline(1) == ''
   let s:wipebuf = bufnr('%')
 endif
 set shortmess=aoO
+argglobal
+%argdel
+edit src/imgui_impl.ts
+set splitbelow splitright
+set nosplitbelow
+set nosplitright
+wincmd t
+set winminheight=0
+set winheight=1
+set winminwidth=0
+set winwidth=1
+argglobal
+let s:l = 1 - ((0 * winheight(0) + 21) / 42)
+if s:l < 1 | let s:l = 1 | endif
+exe s:l
+normal! zt
+1
+normal! 0
+tabnext 1
+badd +0 src/imgui_impl.ts
 badd +12 rollup.config.js
 badd +7 imgui-js/rollup.config.js
-badd +7 imgui-js/tsconfig.json
-badd +26 tsconfig.json
+badd +4 imgui-js/tsconfig.json
+badd +12 tsconfig.json
 badd +1 index.js
 badd +3904 imgui-js/imgui.ts
-badd +39 src/main.ts
+badd +80 src/main.ts
 badd +52 imgui-js/example/main.ts
-badd +8 package.json
+badd +34 package.json
 badd +1 imgui-js/dist/imgui.d.ts
 badd +1 imgui-js/bind-imgui.js
 badd +1 imgui-js/example/imgui_impl.js
 badd +2 imgui-js/example/imgui_impl.ts
 badd +295 imgui-js/imgui_demo.ts
 badd +4 index.html
-badd +14 indexdev.html
+badd +4 indexdev.html
 badd +6 imgui-js/example/index.html
-badd +2 imgui-js/example/system.config.js
+badd +6 imgui-js/example/system.config.js
 badd +40 imgui-js/package.json
-badd +201 node_modules/systemjs/dist/system.js
-argglobal
-silent! argdel *
-edit package.json
-set splitbelow splitright
-wincmd _ | wincmd |
-split
-1wincmd k
-wincmd w
-set nosplitbelow
-set nosplitright
-wincmd t
-set winheight=1 winwidth=1
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-argglobal
-enew
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=wipe
-setlocal buflisted
-setlocal buftype=nofile
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=s1:/*,mb:*,ex:*/,://,b:#,:%,:XCOMM,n:>,fb:-
-setlocal commentstring=/*%s*/
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != ''
-setlocal filetype=
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=tcq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=
-setlocal indentkeys=0{,0},:,0#,!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal nomodifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal previewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal noswapfile
-setlocal synmaxcol=3000
-if &syntax != ''
-setlocal syntax=
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal winfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-wincmd w
-argglobal
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=
-setlocal buflisted
-setlocal buftype=
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=
-setlocal commentstring=
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != 'json'
-setlocal filetype=json
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=cq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=GetJSONIndent()
-setlocal indentkeys=0{,0},0),0[,0],!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal modifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal nopreviewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal swapfile
-setlocal synmaxcol=3000
-if &syntax != 'json'
-setlocal syntax=json
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal nowinfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-silent! normal! zE
-let s:l = 23 - ((19 * winheight(0) + 15) / 31)
-if s:l < 1 | let s:l = 1 | endif
-exe s:l
-normal! zt
-23
-normal! 024|
-wincmd w
-2wincmd w
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-tabnext 1
-if exists('s:wipebuf')
+badd +1 node_modules/systemjs/dist/system.js
+badd +1 src/main.js
+badd +1 imgui-js/example/main.js
+if exists('s:wipebuf') && len(win_findbuf(s:wipebuf)) == 0
   silent exe 'bwipe ' . s:wipebuf
 endif
 unlet! s:wipebuf
 set winheight=1 winwidth=20 shortmess=filnxtToOc
+set winminheight=1 winminwidth=1
 let s:sx = expand("<sfile>:p:r")."x.vim"
 if file_readable(s:sx)
   exe "source " . fnameescape(s:sx)
diff --git a/src/imgui_impl.js b/src/imgui_impl.js
new file mode 100644
index 0000000..416e4b2
--- /dev/null
+++ b/src/imgui_impl.js
@@ -0,0 +1,736 @@
+System.register(["imgui-js", "pixi.js", "./utils"], function (exports_1, context_1) {
+    "use strict";
+    var ImGui, PIXI, U, clipboard_text, contexts, contextIOs, isFirstWindow, ImGuiImplInternalRenderer, gl, app, ImGuiWindowLayer, ImGuiWindow, canvas, g_ShaderHandle, g_VertHandle, g_FragHandle, g_AttribLocationTex, g_AttribLocationProjMtx, g_AttribLocationPosition, g_AttribLocationUV, g_AttribLocationColor, g_VaoHandle, g_VboHandle, g_ElementsHandle, g_FontTexture, mouse_button_map;
+    var __moduleName = context_1 && context_1.id;
+    function document_on_copy(event) {
+        if (event.clipboardData) {
+            event.clipboardData.setData("text/plain", clipboard_text);
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function document_on_cut(event) {
+        if (event.clipboardData) {
+            event.clipboardData.setData("text/plain", clipboard_text);
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function document_on_paste(event) {
+        if (event.clipboardData) {
+            clipboard_text = event.clipboardData.getData("text/plain");
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function window_on_gamepadconnected(event /* GamepadEvent */) {
+        console.log("Gamepad connected at index %d: %s. %d buttons, %d axes.", event.gamepad.index, event.gamepad.id, event.gamepad.buttons.length, event.gamepad.axes.length);
+    }
+    function window_on_gamepaddisconnected(event /* GamepadEvent */) {
+        console.log("Gamepad disconnected at index %d: %s.", event.gamepad.index, event.gamepad.id);
+    }
+    function canvas_on_blur(event) {
+        for (var io of contextIOs) {
+            io.KeyCtrl = false;
+            io.KeyShift = false;
+            io.KeyAlt = false;
+            io.KeySuper = false;
+            for (let i = 0; i < io.KeysDown.length; ++i) {
+                io.KeysDown[i] = false;
+            }
+            for (let i = 0; i < io.MouseDown.length; ++i) {
+                io.MouseDown[i] = false;
+            }
+        }
+    }
+    function canvas_on_keydown(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.KeyCtrl = event.ctrlKey;
+            io.KeyShift = event.shiftKey;
+            io.KeyAlt = event.altKey;
+            io.KeySuper = event.metaKey;
+            ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+            io.KeysDown[event.keyCode] = true;
+            // forward to the keypress event
+            if ( /*io.WantCaptureKeyboard ||*/event.key === "Tab") {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_keyup(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.KeyCtrl = event.ctrlKey;
+            io.KeyShift = event.shiftKey;
+            io.KeyAlt = event.altKey;
+            io.KeySuper = event.metaKey;
+            ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+            io.KeysDown[event.keyCode] = false;
+            if (io.WantCaptureKeyboard) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_keypress(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.AddInputCharacter(event.charCode);
+            if (io.WantCaptureKeyboard) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_contextmenu(event) {
+        for (var io of contextIOs) {
+            if (io.WantCaptureMouse) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_wheel(event) {
+        for (var io of contextIOs) {
+            let scale = 1.0;
+            switch (event.deltaMode) {
+                case event.DOM_DELTA_PIXEL:
+                    scale = 0.01;
+                    break;
+                case event.DOM_DELTA_LINE:
+                    scale = 0.2;
+                    break;
+                case event.DOM_DELTA_PAGE:
+                    scale = 1.0;
+                    break;
+            }
+            io.MouseWheelH = event.deltaX * scale;
+            io.MouseWheel = -event.deltaY * scale; // Mouse wheel: 1 unit scrolls about 5 lines text.
+            if (io.WantCaptureMouse) {
+                event.preventDefault();
+            }
+        }
+    }
+    function PrePIXIInit() {
+        PIXI.Renderer.registerPlugin("imgui_renderer", U.fromConstructor(ImGuiImplInternalRenderer));
+    }
+    exports_1("PrePIXIInit", PrePIXIInit);
+    function Init(_app) {
+        // Setup Dear ImGui binding
+        ImGui.IMGUI_CHECKVERSION();
+        if (typeof (document) !== "undefined") {
+            document.body.addEventListener("copy", document_on_copy);
+            document.body.addEventListener("cut", document_on_cut);
+            document.body.addEventListener("paste", document_on_paste);
+        }
+        if (typeof (window) !== "undefined") {
+            window.addEventListener("gamepadconnected", window_on_gamepadconnected);
+            window.addEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+        }
+        app = _app;
+        gl = app.renderer.gl;
+        canvas = app.view;
+        gl.getExtension("EXT_color_buffer_float");
+        if (canvas !== null) {
+            canvas.style.touchAction = "none"; // Disable browser handling of all panning and zooming gestures.
+            canvas.addEventListener("blur", canvas_on_blur);
+            canvas.addEventListener("keydown", canvas_on_keydown);
+            canvas.addEventListener("keyup", canvas_on_keyup);
+            canvas.addEventListener("keypress", canvas_on_keypress);
+            canvas.addEventListener("contextmenu", canvas_on_contextmenu);
+            canvas.addEventListener("wheel", canvas_on_wheel);
+        }
+        CreateDeviceObjects();
+    }
+    exports_1("Init", Init);
+    function Shutdown() {
+        DestroyDeviceObjects();
+        if (canvas !== null) {
+            canvas.removeEventListener("blur", canvas_on_blur);
+            canvas.removeEventListener("keydown", canvas_on_keydown);
+            canvas.removeEventListener("keyup", canvas_on_keyup);
+            canvas.removeEventListener("keypress", canvas_on_keypress);
+            canvas.removeEventListener("contextmenu", canvas_on_contextmenu);
+            canvas.removeEventListener("wheel", canvas_on_wheel);
+        }
+        app = null;
+        canvas = null;
+        if (typeof (window) !== "undefined") {
+            window.removeEventListener("gamepadconnected", window_on_gamepadconnected);
+            window.removeEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+        }
+        if (typeof (document) !== "undefined") {
+            document.body.removeEventListener("copy", document_on_copy);
+            document.body.removeEventListener("cut", document_on_cut);
+            document.body.removeEventListener("paste", document_on_paste);
+        }
+    }
+    exports_1("Shutdown", Shutdown);
+    function CreateFontsTexture() {
+        const io = ImGui.GetIO();
+        // Backup GL state
+        const last_texture = gl && gl.getParameter(gl.TEXTURE_BINDING_2D);
+        // Build texture atlas
+        // const width: number = 256;
+        // const height: number = 256;
+        // const pixels: Uint8Array = new Uint8Array(4 * width * height).fill(0xff);
+        const { width, height, pixels } = io.Fonts.GetTexDataAsRGBA32(); // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+        // console.log(`font texture ${width} x ${height} @ ${pixels.length}`);
+        // Upload texture to graphics system
+        g_FontTexture = gl && gl.createTexture();
+        gl && gl.bindTexture(gl.TEXTURE_2D, g_FontTexture);
+        gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+        gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+        // gl && gl.pixelStorei(gl.UNPACK_ROW_LENGTH); // WebGL2
+        gl && gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+        // Store our identifier
+        io.Fonts.TexID = g_FontTexture || { foo: "bar" };
+        // console.log("font texture id", g_FontTexture);
+        // Restore modified GL state
+        gl && last_texture && gl.bindTexture(gl.TEXTURE_2D, last_texture);
+    }
+    function DestroyFontsTexture() {
+        const io = ImGui.GetIO();
+        io.Fonts.TexID = null;
+        gl && gl.deleteTexture(g_FontTexture);
+        g_FontTexture = null;
+    }
+    function CreateDeviceObjects() {
+        const vertex_shader = [
+            "#version 300 es",
+            "uniform mat4 ProjMtx;",
+            "in vec2 Position;",
+            "in vec2 UV;",
+            "in vec4 Color;",
+            "out vec2 Frag_UV;",
+            "out vec4 Frag_Color;",
+            "void main() {",
+            "	Frag_UV = UV;",
+            "	Frag_Color = Color;",
+            "	gl_Position = ProjMtx * vec4(Position.xy,0,1);",
+            "}",
+        ];
+        const fragment_shader = [
+            "#version 300 es",
+            "precision mediump float;",
+            "uniform sampler2D Texture;",
+            "in vec2 Frag_UV;",
+            "in vec4 Frag_Color;",
+            "out vec4 OutColor;",
+            "void main() {",
+            "	OutColor = Frag_Color * texture(Texture, Frag_UV);",
+            "}",
+        ];
+        g_ShaderHandle = gl && gl.createProgram();
+        g_VertHandle = gl && gl.createShader(gl.VERTEX_SHADER);
+        g_FragHandle = gl && gl.createShader(gl.FRAGMENT_SHADER);
+        gl && gl.shaderSource(g_VertHandle, vertex_shader.join("\n"));
+        gl && gl.shaderSource(g_FragHandle, fragment_shader.join("\n"));
+        gl && gl.compileShader(g_VertHandle);
+        gl && gl.compileShader(g_FragHandle);
+        gl && gl.attachShader(g_ShaderHandle, g_VertHandle);
+        gl && gl.attachShader(g_ShaderHandle, g_FragHandle);
+        gl && gl.linkProgram(g_ShaderHandle);
+        g_AttribLocationTex = gl && gl.getUniformLocation(g_ShaderHandle, "Texture");
+        g_AttribLocationProjMtx = gl && gl.getUniformLocation(g_ShaderHandle, "ProjMtx");
+        g_AttribLocationPosition = gl && gl.getAttribLocation(g_ShaderHandle, "Position") || 0;
+        g_AttribLocationUV = gl && gl.getAttribLocation(g_ShaderHandle, "UV") || 0;
+        g_AttribLocationColor = gl && gl.getAttribLocation(g_ShaderHandle, "Color") || 0;
+        g_VaoHandle = gl && gl.createVertexArray();
+        g_VboHandle = gl && gl.createBuffer();
+        g_ElementsHandle = gl && gl.createBuffer();
+    }
+    function DestroyDeviceObjects() {
+        DestroyFontsTexture();
+        gl && gl.deleteVertexArray(g_VaoHandle);
+        g_VaoHandle = null;
+        gl && gl.deleteBuffer(g_VboHandle);
+        g_VboHandle = null;
+        gl && gl.deleteBuffer(g_ElementsHandle);
+        g_ElementsHandle = null;
+        g_AttribLocationTex = null;
+        g_AttribLocationProjMtx = null;
+        g_AttribLocationPosition = -1;
+        g_AttribLocationUV = -1;
+        g_AttribLocationColor = -1;
+        gl && gl.deleteProgram(g_ShaderHandle);
+        g_ShaderHandle = null;
+        gl && gl.deleteShader(g_VertHandle);
+        g_VertHandle = null;
+        gl && gl.deleteShader(g_FragHandle);
+        g_FragHandle = null;
+    }
+    return {
+        setters: [
+            function (ImGui_1) {
+                ImGui = ImGui_1;
+            },
+            function (PIXI_1) {
+                PIXI = PIXI_1;
+            },
+            function (U_1) {
+                U = U_1;
+            }
+        ],
+        execute: function () {
+            clipboard_text = "";
+            contexts = [];
+            contextIOs = [];
+            isFirstWindow = true;
+            ImGuiImplInternalRenderer = class ImGuiImplInternalRenderer extends PIXI.ObjectRenderer {
+                constructor(r) {
+                    super(r);
+                }
+                render(owner) {
+                    if (!(owner instanceof ImGuiWindowLayer))
+                        return;
+                    const window = owner.window;
+                    const io = window.io;
+                    const draw_data = ImGui.GetDrawData();
+                    if (draw_data === null) {
+                        throw new Error();
+                    }
+                    gl || console.log(draw_data);
+                    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+                    const fb_width = io.DisplaySize.x * io.DisplayFramebufferScale.x;
+                    const fb_height = io.DisplaySize.y * io.DisplayFramebufferScale.y;
+                    if (fb_width === 0 || fb_height === 0) {
+                        return;
+                    }
+                    draw_data.ScaleClipRects(io.DisplayFramebufferScale);
+                    // Backup GL state
+                    const last_program = gl && gl.getParameter(gl.CURRENT_PROGRAM) || null;
+                    const last_active_texture = gl && gl.getParameter(gl.ACTIVE_TEXTURE) || null;
+                    gl && gl.activeTexture(gl.TEXTURE0);
+                    const last_texture0 = gl && gl.getParameter(gl.TEXTURE_BINDING_2D) || null;
+                    const last_vertex_array = gl && gl.getParameter(gl.VERTEX_ARRAY_BINDING) || null;
+                    const last_array_buffer = gl && gl.getParameter(gl.ARRAY_BUFFER_BINDING) || null;
+                    const last_element_array_buffer = gl && gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING) || null;
+                    // GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+                    const last_viewport = gl && gl.getParameter(gl.VIEWPORT) || null;
+                    const last_scissor_box = gl && gl.getParameter(gl.SCISSOR_BOX) || null;
+                    const last_blend_src_rgb = gl && gl.getParameter(gl.BLEND_SRC_RGB) || null;
+                    const last_blend_dst_rgb = gl && gl.getParameter(gl.BLEND_DST_RGB) || null;
+                    const last_blend_src_alpha = gl && gl.getParameter(gl.BLEND_SRC_ALPHA) || null;
+                    const last_blend_dst_alpha = gl && gl.getParameter(gl.BLEND_DST_ALPHA) || null;
+                    const last_blend_equation_rgb = gl && gl.getParameter(gl.BLEND_EQUATION_RGB) || null;
+                    const last_blend_equation_alpha = gl && gl.getParameter(gl.BLEND_EQUATION_ALPHA) || null;
+                    const last_enable_blend = gl && gl.getParameter(gl.BLEND) || null;
+                    const last_enable_cull_face = gl && gl.getParameter(gl.CULL_FACE) || null;
+                    const last_enable_depth_test = gl && gl.getParameter(gl.DEPTH_TEST) || null;
+                    const last_enable_scissor_test = gl && gl.getParameter(gl.SCISSOR_TEST) || null;
+                    gl.clearColor(0, 0, 0, 0);
+                    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+                    gl && gl.bindVertexArray(g_VaoHandle);
+                    // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
+                    gl && gl.enable(gl.BLEND);
+                    gl && gl.blendEquation(gl.FUNC_ADD);
+                    gl && gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE);
+                    gl && gl.disable(gl.CULL_FACE);
+                    gl && gl.disable(gl.DEPTH_TEST);
+                    gl && gl.enable(gl.SCISSOR_TEST);
+                    // glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+                    // Setup viewport, orthographic projection matrix
+                    // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+                    gl && gl.viewport(0, 0, fb_width, fb_height);
+                    const L = draw_data.DisplayPos.x;
+                    const R = draw_data.DisplayPos.x + draw_data.DisplaySize.x;
+                    const T = draw_data.DisplayPos.y;
+                    const B = draw_data.DisplayPos.y + draw_data.DisplaySize.y;
+                    // we actually flip the bottom and top here to match with PIXI's texture usage
+                    const ortho_projection = new Float32Array([
+                        2.0 / (R - L), 0.0, 0.0, 0.0,
+                        0.0, 2.0 / (B - T), 0.0, 0.0,
+                        0.0, 0.0, -1.0, 0.0,
+                        (R + L) / (L - R), (B + T) / (T - B), 0.0, 1.0,
+                    ]);
+                    gl && gl.useProgram(g_ShaderHandle);
+                    gl && gl.uniform1i(g_AttribLocationTex, 0);
+                    gl && g_AttribLocationProjMtx && gl.uniformMatrix4fv(g_AttribLocationProjMtx, false, ortho_projection);
+                    // Render command lists
+                    gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationPosition);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationUV);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationColor);
+                    gl && gl.vertexAttribPointer(g_AttribLocationPosition, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertPosOffset);
+                    gl && gl.vertexAttribPointer(g_AttribLocationUV, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertUVOffset);
+                    gl && gl.vertexAttribPointer(g_AttribLocationColor, 4, gl.UNSIGNED_BYTE, true, ImGui.ImDrawVertSize, ImGui.ImDrawVertColOffset);
+                    // Draw
+                    const pos = draw_data.DisplayPos;
+                    const idx_buffer_type = gl && ((ImGui.ImDrawIdxSize === 4) ? gl.UNSIGNED_INT : gl.UNSIGNED_SHORT) || 0;
+                    draw_data.IterateDrawLists((draw_list) => {
+                        gl || console.log(draw_list);
+                        gl || console.log("VtxBuffer.length", draw_list.VtxBuffer.length);
+                        gl || console.log("IdxBuffer.length", draw_list.IdxBuffer.length);
+                        let idx_buffer_offset = 0;
+                        gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+                        gl && gl.bufferData(gl.ARRAY_BUFFER, draw_list.VtxBuffer, gl.STREAM_DRAW);
+                        gl && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+                        gl && gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, draw_list.IdxBuffer, gl.STREAM_DRAW);
+                        draw_list.IterateDrawCmds((draw_cmd) => {
+                            gl || console.log(draw_cmd);
+                            gl || console.log("ElemCount", draw_cmd.ElemCount);
+                            gl || console.log("ClipRect", draw_cmd.ClipRect.x, draw_cmd.ClipRect.y, draw_cmd.ClipRect.z - draw_cmd.ClipRect.x, draw_cmd.ClipRect.w - draw_cmd.ClipRect.y);
+                            gl || console.log("TextureId", draw_cmd.TextureId);
+                            if (!gl) {
+                                console.log("i: pos.x pos.y uv.x uv.y col");
+                                for (let i = 0; i < Math.min(3, draw_cmd.ElemCount); ++i) {
+                                    const view = new ImGui.ImDrawVert(draw_list.VtxBuffer.buffer, draw_list.VtxBuffer.byteOffset + i * ImGui.ImDrawVertSize);
+                                    console.log(`${i}: ${view.pos[0].toFixed(2)} ${view.pos[1].toFixed(2)} ${view.uv[0].toFixed(5)} ${view.uv[1].toFixed(5)} ${("00000000" + view.col[0].toString(16)).substr(-8)}`);
+                                }
+                            }
+                            if (draw_cmd.UserCallback !== null) {
+                                // User callback (registered via ImDrawList::AddCallback)
+                                draw_cmd.UserCallback(draw_list, draw_cmd);
+                            }
+                            else {
+                                const clip_rect = new ImGui.ImVec4(draw_cmd.ClipRect.x - pos.x, draw_cmd.ClipRect.y - pos.y, draw_cmd.ClipRect.z - pos.x, draw_cmd.ClipRect.w - pos.y);
+                                if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0 && clip_rect.w >= 0.0) {
+                                    // Apply scissor/clipping rectangle
+                                    gl && gl.scissor(clip_rect.x, clip_rect.y, clip_rect.z - clip_rect.x, clip_rect.w - clip_rect.y);
+                                    // Bind texture, Draw
+                                    gl && gl.bindTexture(gl.TEXTURE_2D, draw_cmd.TextureId);
+                                    gl && gl.drawElements(gl.TRIANGLES, draw_cmd.ElemCount, idx_buffer_type, idx_buffer_offset);
+                                }
+                            }
+                            idx_buffer_offset += draw_cmd.ElemCount * ImGui.ImDrawIdxSize;
+                        });
+                    });
+                    // Restore modified GL state
+                    gl && (last_program !== null) && gl.useProgram(last_program);
+                    gl && (last_texture0 !== null) && gl.bindTexture(gl.TEXTURE_2D, last_texture0);
+                    gl && (last_active_texture !== null) && gl.activeTexture(last_active_texture);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationPosition);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationUV);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationColor);
+                    gl && (last_vertex_array !== null) && gl.bindVertexArray(last_vertex_array);
+                    gl && (last_array_buffer !== null) && gl.bindBuffer(gl.ARRAY_BUFFER, last_array_buffer);
+                    gl && (last_element_array_buffer !== null) && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+                    gl && (last_viewport !== null) && gl.viewport(last_viewport[0], last_viewport[1], last_viewport[2], last_viewport[3]);
+                    gl && (last_scissor_box !== null) && gl.scissor(last_scissor_box[0], last_scissor_box[1], last_scissor_box[2], last_scissor_box[3]);
+                    gl && (last_blend_equation_rgb !== null && last_blend_equation_alpha !== null) && gl.blendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+                    gl && (last_blend_src_rgb !== null && last_blend_src_alpha !== null && last_blend_dst_rgb !== null && last_blend_dst_alpha !== null) && gl.blendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
+                    gl && (last_enable_blend ? gl.enable(gl.BLEND) : gl.disable(gl.BLEND));
+                    gl && (last_enable_cull_face ? gl.enable(gl.CULL_FACE) : gl.disable(gl.CULL_FACE));
+                    gl && (last_enable_depth_test ? gl.enable(gl.DEPTH_TEST) : gl.disable(gl.DEPTH_TEST));
+                    gl && (last_enable_scissor_test ? gl.enable(gl.SCISSOR_TEST) : gl.disable(gl.SCISSOR_TEST));
+                    // glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
+                }
+            };
+            gl = null;
+            app = null;
+            ImGuiWindowLayer = class ImGuiWindowLayer extends PIXI.Sprite {
+                constructor(window, tex) {
+                    super();
+                    this.pluginName = "imgui_renderer";
+                    this.window = window;
+                }
+            };
+            ImGuiWindow = class ImGuiWindow extends PIXI.Container {
+                constructor(sizeX, sizeY, update) {
+                    super();
+                    this.baseTex = new PIXI.BaseRenderTexture({ scaleMode: PIXI.SCALE_MODES.LINEAR, resolution: 1, type: PIXI.TYPES.FLOAT, format: PIXI.FORMATS.RGBA });
+                    this.tex = new PIXI.RenderTexture(this.baseTex);
+                    this.surface = new PIXI.Sprite(this.tex);
+                    this.imgui = new ImGuiWindowLayer(this, this.tex);
+                    this.ctx = ImGui.CreateContext(contextIOs.length == 0 ? null : contextIOs[0].Fonts);
+                    ImGui.SetCurrentContext(this.ctx);
+                    this.io = ImGui.GetIO();
+                    contexts.push(this.ctx);
+                    contextIOs.push(this.io);
+                    if (contexts.length == 1) {
+                        CreateFontsTexture();
+                    }
+                    if (typeof (window) !== "undefined") {
+                        ImGui.LoadIniSettingsFromMemory(window.localStorage.getItem("imgui.ini") || "");
+                    }
+                    if (typeof (navigator) !== "undefined") {
+                        this.io.ConfigMacOSXBehaviors = navigator.platform.match(/Mac/) !== null;
+                    }
+                    this.io.SetClipboardTextFn = (user_data, text) => {
+                        clipboard_text = text;
+                        // console.log(`set clipboard_text: "${clipboard_text}"`);
+                        if (typeof navigator !== "undefined" && typeof navigator.clipboard !== "undefined") {
+                            // console.log(`clipboard.writeText: "${clipboard_text}"`);
+                            navigator.clipboard.writeText(clipboard_text).then(() => {
+                                // console.log(`clipboard.writeText: "${clipboard_text}" done.`);
+                            });
+                        }
+                    };
+                    this.io.GetClipboardTextFn = (user_data) => {
+                        // if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+                        //     console.log(`clipboard.readText: "${clipboard_text}"`);
+                        //     (navigator as any).clipboard.readText().then((text: string): void => {
+                        //         clipboard_text = text;
+                        //         console.log(`clipboard.readText: "${clipboard_text}" done.`);
+                        //     });
+                        // }
+                        // console.log(`get clipboard_text: "${clipboard_text}"`);
+                        return clipboard_text;
+                    };
+                    this.io.ClipboardUserData = null;
+                    // Setup back-end capabilities flags
+                    this.io.BackendFlags |= ImGui.BackendFlags.HasMouseCursors; // We can honor GetMouseCursor() values (optional)
+                    // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+                    this.io.KeyMap[ImGui.Key.Tab] = 9;
+                    this.io.KeyMap[ImGui.Key.LeftArrow] = 37;
+                    this.io.KeyMap[ImGui.Key.RightArrow] = 39;
+                    this.io.KeyMap[ImGui.Key.UpArrow] = 38;
+                    this.io.KeyMap[ImGui.Key.DownArrow] = 40;
+                    this.io.KeyMap[ImGui.Key.PageUp] = 33;
+                    this.io.KeyMap[ImGui.Key.PageDown] = 34;
+                    this.io.KeyMap[ImGui.Key.Home] = 36;
+                    this.io.KeyMap[ImGui.Key.End] = 35;
+                    this.io.KeyMap[ImGui.Key.Insert] = 45;
+                    this.io.KeyMap[ImGui.Key.Delete] = 46;
+                    this.io.KeyMap[ImGui.Key.Backspace] = 8;
+                    this.io.KeyMap[ImGui.Key.Space] = 32;
+                    this.io.KeyMap[ImGui.Key.Enter] = 13;
+                    this.io.KeyMap[ImGui.Key.Escape] = 27;
+                    this.io.KeyMap[ImGui.Key.A] = 65;
+                    this.io.KeyMap[ImGui.Key.C] = 67;
+                    this.io.KeyMap[ImGui.Key.V] = 86;
+                    this.io.KeyMap[ImGui.Key.X] = 88;
+                    this.io.KeyMap[ImGui.Key.Y] = 89;
+                    this.io.KeyMap[ImGui.Key.Z] = 90;
+                    this.update = update;
+                    this.resize(sizeX, sizeY);
+                    this.imgui.pluginName = 'imgui_renderer';
+                    this.addChild(this.surface);
+                    app.renderer.plugins.interaction.addListener("mousedown", this.mouseDown.bind(this));
+                    app.renderer.plugins.interaction.addListener("mouseup", this.mouseUp.bind(this));
+                    app.ticker.add(this.updateInternal.bind(this));
+                    this.interactive = false;
+                    this.interactiveChildren = true;
+                    this.surface.interactive = false;
+                }
+                getSizeX() { return this.sizeX; }
+                getSizeY() { return this.sizeY; }
+                withContext(cb) {
+                    ImGui.SetCurrentContext(this.ctx);
+                    cb();
+                }
+                mouseDown(e) {
+                    if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface) {
+                        this.io.MouseDown[mouse_button_map[0]] = true;
+                    }
+                }
+                mouseUp(e) {
+                    if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface) {
+                        this.io.MouseDown[mouse_button_map[0]] = false;
+                    }
+                }
+                resize(sizeX, sizeY) {
+                    this.sizeX = sizeX;
+                    this.sizeY = sizeY;
+                    this.baseTex.resize(sizeX, sizeY);
+                    this.tex.frame = new PIXI.Rectangle(0, 0, this.baseTex.width, this.baseTex.height);
+                }
+                updateInternal(deltaTime) {
+                    const dt = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+                    ImGui.SetCurrentContext(this.ctx);
+                    if (this.io.WantSaveIniSettings) {
+                        this.io.WantSaveIniSettings = false;
+                        if (typeof (window) !== "undefined") {
+                            window.localStorage.setItem("imgui.ini", ImGui.SaveIniSettingsToMemory());
+                        }
+                    }
+                    this.io.DisplaySize.x = this.sizeX;
+                    this.io.DisplaySize.y = this.sizeY;
+                    this.io.DisplayFramebufferScale.x = 1;
+                    this.io.DisplayFramebufferScale.y = 1;
+                    this.io.DeltaTime = dt;
+                    let localPos = this.toLocal(app.renderer.plugins.interaction.mouse.global);
+                    if (localPos.x < 0 || localPos.y < 0 || localPos.x >= this.sizeX || localPos.y >= this.sizeY) {
+                        localPos = new PIXI.Point(-Number.MAX_VALUE, -Number.MAX_VALUE);
+                    }
+                    this.io.MousePos.x = localPos.x;
+                    this.io.MousePos.y = localPos.y;
+                    if (this.io.WantSetMousePos) {
+                        console.log("TODO: MousePos", this.io.MousePos.x, this.io.MousePos.y);
+                    }
+                    if (typeof (document) !== "undefined") {
+                        if (this.io.MouseDrawCursor) {
+                            document.body.style.cursor = "none";
+                        }
+                        else {
+                            switch (ImGui.GetMouseCursor()) {
+                                case ImGui.MouseCursor.None:
+                                    document.body.style.cursor = "none";
+                                    break;
+                                default:
+                                case ImGui.MouseCursor.Arrow:
+                                    document.body.style.cursor = "default";
+                                    break;
+                                case ImGui.MouseCursor.TextInput:
+                                    document.body.style.cursor = "text";
+                                    break; // When hovering over InputText, etc.
+                                case ImGui.MouseCursor.ResizeAll:
+                                    document.body.style.cursor = "move";
+                                    break; // Unused
+                                case ImGui.MouseCursor.ResizeNS:
+                                    document.body.style.cursor = "ns-resize";
+                                    break; // When hovering over an horizontal border
+                                case ImGui.MouseCursor.ResizeEW:
+                                    document.body.style.cursor = "ew-resize";
+                                    break; // When hovering over a vertical border or a column
+                                case ImGui.MouseCursor.ResizeNESW:
+                                    document.body.style.cursor = "nesw-resize";
+                                    break; // When hovering over the bottom-left corner of a window
+                                case ImGui.MouseCursor.ResizeNWSE:
+                                    document.body.style.cursor = "nwse-resize";
+                                    break; // When hovering over the bottom-right corner of a window
+                                case ImGui.MouseCursor.Hand:
+                                    document.body.style.cursor = "move";
+                                    break;
+                            }
+                        }
+                    }
+                    // Gamepad navigation mapping [BETA]
+                    for (let i = 0; i < this.io.NavInputs.length; ++i) {
+                        this.io.NavInputs[i] = 0.0;
+                    }
+                    if (this.io.ConfigFlags & ImGui.ConfigFlags.NavEnableGamepad) {
+                        // Update gamepad inputs
+                        const gamepads = (typeof (navigator) !== "undefined" && typeof (navigator.getGamepads) === "function") ? navigator.getGamepads() : [];
+                        for (let i = 0; i < gamepads.length; ++i) {
+                            const gamepad = gamepads[i];
+                            if (!gamepad) {
+                                continue;
+                            }
+                            const buttons_count = gamepad.buttons.length;
+                            const axes_count = gamepad.axes.length;
+                            const MAP_BUTTON = function (NAV_NO, BUTTON_NO) {
+                                if (!gamepad) {
+                                    return;
+                                }
+                                if (buttons_count > BUTTON_NO && gamepad.buttons[BUTTON_NO].pressed)
+                                    this.io.NavInputs[NAV_NO] = 1.0;
+                            };
+                            const MAP_ANALOG = function (NAV_NO, AXIS_NO, V0, V1) {
+                                if (!gamepad) {
+                                    return;
+                                }
+                                let v = (axes_count > AXIS_NO) ? gamepad.axes[AXIS_NO] : V0;
+                                v = (v - V0) / (V1 - V0);
+                                if (v > 1.0)
+                                    v = 1.0;
+                                if (this.io.NavInputs[NAV_NO] < v)
+                                    this.io.NavInputs[NAV_NO] = v;
+                            };
+                            // TODO: map input based on vendor and product id
+                            // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/id
+                            const match = gamepad.id.match(/^([0-9a-f]{4})-([0-9a-f]{4})-.*$/);
+                            const match_chrome = gamepad.id.match(/^.*\(.*Vendor: ([0-9a-f]{4}) Product: ([0-9a-f]{4})\).*$/);
+                            const vendor = (match && match[1]) || (match_chrome && match_chrome[1]) || "0000";
+                            const product = (match && match[2]) || (match_chrome && match_chrome[2]) || "0000";
+                            switch (vendor + product) {
+                                case "046dc216": // Logitech Logitech Dual Action (Vendor: 046d Product: c216)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 1); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 2); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 0); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_ANALOG(ImGui.NavInput.DpadLeft, 4, -0.3, -0.9); // D-Pad Left
+                                    MAP_ANALOG(ImGui.NavInput.DpadRight, 4, +0.3, +0.9); // D-Pad Right
+                                    MAP_ANALOG(ImGui.NavInput.DpadUp, 5, -0.3, -0.9); // D-Pad Up
+                                    MAP_ANALOG(ImGui.NavInput.DpadDown, 5, +0.3, +0.9); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 6); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 7); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                case "046dc21d": // Logitech Gamepad F310 (STANDARD GAMEPAD Vendor: 046d Product: c21d)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 0); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 1); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 2); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_BUTTON(ImGui.NavInput.DpadLeft, 14); // D-Pad Left
+                                    MAP_BUTTON(ImGui.NavInput.DpadRight, 15); // D-Pad Right
+                                    MAP_BUTTON(ImGui.NavInput.DpadUp, 12); // D-Pad Up
+                                    MAP_BUTTON(ImGui.NavInput.DpadDown, 13); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_ANALOG(ImGui.NavInput.TweakSlow, 6, +0.3, +0.9); // L2 / LT
+                                    MAP_ANALOG(ImGui.NavInput.TweakFast, 7, +0.3, +0.9); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                case "2dc86001": // 8Bitdo SN30 Pro  8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6001)
+                                case "2dc86101": // 8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6101)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 1); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 0); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 4); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_ANALOG(ImGui.NavInput.DpadLeft, 6, -0.3, -0.9); // D-Pad Left
+                                    MAP_ANALOG(ImGui.NavInput.DpadRight, 6, +0.3, +0.9); // D-Pad Right
+                                    MAP_ANALOG(ImGui.NavInput.DpadUp, 7, -0.3, -0.9); // D-Pad Up
+                                    MAP_ANALOG(ImGui.NavInput.DpadDown, 7, +0.3, +0.9); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 6); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 7); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 8); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 9); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                default: // standard gamepad: https://w3c.github.io/gamepad/#remapping
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 0); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 1); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 2); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_BUTTON(ImGui.NavInput.DpadLeft, 14); // D-Pad Left
+                                    MAP_BUTTON(ImGui.NavInput.DpadRight, 15); // D-Pad Right
+                                    MAP_BUTTON(ImGui.NavInput.DpadUp, 12); // D-Pad Up
+                                    MAP_BUTTON(ImGui.NavInput.DpadDown, 13); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 6); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 7); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                            }
+                        }
+                    }
+                    ImGui.NewFrame();
+                    this.update(dt);
+                    ImGui.EndFrame();
+                    ImGui.Render();
+                    app.renderer.render(this.imgui, this.tex);
+                    this.surface.interactive = this.io.WantCaptureMouse;
+                }
+            };
+            exports_1("ImGuiWindow", ImGuiWindow);
+            canvas = null;
+            //export let gl: WebGL2RenderingContext | null = null;
+            g_ShaderHandle = null;
+            g_VertHandle = null;
+            g_FragHandle = null;
+            g_AttribLocationTex = null;
+            g_AttribLocationProjMtx = null;
+            g_AttribLocationPosition = -1;
+            g_AttribLocationUV = -1;
+            g_AttribLocationColor = -1;
+            g_VaoHandle = null;
+            g_VboHandle = null;
+            g_ElementsHandle = null;
+            g_FontTexture = null;
+            // MouseEvent.button
+            // A number representing a given button:
+            // 0: Main button pressed, usually the left button or the un-initialized state
+            // 1: Auxiliary button pressed, usually the wheel button or the middle button (if present)
+            // 2: Secondary button pressed, usually the right button
+            // 3: Fourth button, typically the Browser Back button
+            // 4: Fifth button, typically the Browser Forward button
+            mouse_button_map = [0, 2, 1, 3, 4];
+        }
+    };
+});
+//# sourceMappingURL=imgui_impl.js.map
\ No newline at end of file
diff --git a/src/imgui_impl.js.map b/src/imgui_impl.js.map
new file mode 100644
index 0000000..bcb545f
--- /dev/null
+++ b/src/imgui_impl.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/src/imgui_impl.ts b/src/imgui_impl.ts
new file mode 100644
index 0000000..a5dad20
--- /dev/null
+++ b/src/imgui_impl.ts
@@ -0,0 +1,797 @@
+import * as ImGui from "imgui-js";
+import { ImVec2 } from "imgui-js";
+import * as PIXI from "pixi.js";
+import * as U from "./utils";
+
+let clipboard_text: string = "";
+
+const contexts: ImGui.ImGuiContext[] = [];
+const contextIOs: ImGui.ImGuiIO[] = [];
+let isFirstWindow: boolean = true;
+
+class ImGuiImplInternalRenderer extends PIXI.ObjectRenderer
+{
+    constructor(r: PIXI.Renderer)
+    {
+        super(r);
+    }
+    render(owner: PIXI.DisplayObject): void
+    {
+        if (!(owner instanceof ImGuiWindowLayer)) return;
+
+        const window: ImGuiWindow = (owner as ImGuiWindowLayer).window;
+
+        const io: ImGui.ImGuiIO = window.io;
+        const draw_data: ImGui.ImDrawData = ImGui.GetDrawData();
+        if (draw_data === null) { throw new Error(); }
+
+        gl || console.log(draw_data);
+
+        // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+        const fb_width: number = io.DisplaySize.x * io.DisplayFramebufferScale.x;
+        const fb_height: number = io.DisplaySize.y * io.DisplayFramebufferScale.y;
+        if (fb_width === 0 || fb_height === 0) {
+            return;
+        }
+        draw_data.ScaleClipRects(io.DisplayFramebufferScale);
+
+        // Backup GL state
+        const last_program: WebGLProgram | null = gl && gl.getParameter(gl.CURRENT_PROGRAM) || null;
+        const last_active_texture: GLenum | null = gl && gl.getParameter(gl.ACTIVE_TEXTURE) || null;
+        gl && gl.activeTexture(gl.TEXTURE0);
+        const last_texture0: WebGLTexture | null = gl && gl.getParameter(gl.TEXTURE_BINDING_2D) || null;
+        const last_vertex_array: WebGLVertexArrayObject | null = gl && gl.getParameter(gl.VERTEX_ARRAY_BINDING) || null;
+        const last_array_buffer: WebGLBuffer | null = gl && gl.getParameter(gl.ARRAY_BUFFER_BINDING) || null;
+        const last_element_array_buffer: WebGLBuffer | null = gl && gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING) || null;
+        // GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+        const last_viewport: Int32Array | null = gl && gl.getParameter(gl.VIEWPORT) || null;
+        const last_scissor_box: Int32Array | null = gl && gl.getParameter(gl.SCISSOR_BOX) || null;
+        const last_blend_src_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_SRC_RGB) || null;
+        const last_blend_dst_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_DST_RGB) || null;
+        const last_blend_src_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_SRC_ALPHA) || null;
+        const last_blend_dst_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_DST_ALPHA) || null;
+        const last_blend_equation_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_EQUATION_RGB) || null;
+        const last_blend_equation_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_EQUATION_ALPHA) || null;
+        const last_enable_blend: GLboolean | null = gl && gl.getParameter(gl.BLEND) || null;
+        const last_enable_cull_face: GLboolean | null = gl && gl.getParameter(gl.CULL_FACE) || null;
+        const last_enable_depth_test: GLboolean | null = gl && gl.getParameter(gl.DEPTH_TEST) || null;
+        const last_enable_scissor_test: GLboolean | null = gl && gl.getParameter(gl.SCISSOR_TEST) || null;
+
+        gl.clearColor(0, 0, 0, 0);
+        gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+        
+        gl && gl.bindVertexArray(g_VaoHandle);
+
+        // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
+        gl && gl.enable(gl.BLEND);
+        gl && gl.blendEquation(gl.FUNC_ADD);
+        gl && gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE);
+        gl && gl.disable(gl.CULL_FACE);
+        gl && gl.disable(gl.DEPTH_TEST);
+        gl && gl.enable(gl.SCISSOR_TEST);
+        // glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+
+        // Setup viewport, orthographic projection matrix
+        // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+        gl && gl.viewport(0, 0, fb_width, fb_height);
+        const L: number = draw_data.DisplayPos.x;
+        const R: number = draw_data.DisplayPos.x + draw_data.DisplaySize.x;
+        const T: number = draw_data.DisplayPos.y;
+        const B: number = draw_data.DisplayPos.y + draw_data.DisplaySize.y;
+        // we actually flip the bottom and top here to match with PIXI's texture usage
+        const ortho_projection: Float32Array = new Float32Array([
+            2.0 / (R - L),     0.0,                0.0, 0.0,
+            0.0,               2.0 / (B - T),      0.0, 0.0,
+            0.0,               0.0,               -1.0, 0.0,
+            (R + L) / (L - R), (B + T) / (T - B),  0.0, 1.0,
+        ]);
+        gl && gl.useProgram(g_ShaderHandle);
+        gl && gl.uniform1i(g_AttribLocationTex, 0);
+        gl && g_AttribLocationProjMtx && gl.uniformMatrix4fv(g_AttribLocationProjMtx, false, ortho_projection);
+
+        // Render command lists
+        gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+        gl && gl.enableVertexAttribArray(g_AttribLocationPosition);
+        gl && gl.enableVertexAttribArray(g_AttribLocationUV);
+        gl && gl.enableVertexAttribArray(g_AttribLocationColor);
+
+        gl && gl.vertexAttribPointer(g_AttribLocationPosition, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertPosOffset);
+        gl && gl.vertexAttribPointer(g_AttribLocationUV, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertUVOffset);
+        gl && gl.vertexAttribPointer(g_AttribLocationColor, 4, gl.UNSIGNED_BYTE, true, ImGui.ImDrawVertSize, ImGui.ImDrawVertColOffset);
+
+        // Draw
+        const pos = draw_data.DisplayPos;
+        const idx_buffer_type: GLenum = gl && ((ImGui.ImDrawIdxSize === 4) ? gl.UNSIGNED_INT : gl.UNSIGNED_SHORT) || 0;
+        draw_data.IterateDrawLists((draw_list: ImGui.ImDrawList): void => {
+            gl || console.log(draw_list);
+            gl || console.log("VtxBuffer.length", draw_list.VtxBuffer.length);
+            gl || console.log("IdxBuffer.length", draw_list.IdxBuffer.length);
+            
+            let idx_buffer_offset: number = 0;
+
+            gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+            gl && gl.bufferData(gl.ARRAY_BUFFER, draw_list.VtxBuffer, gl.STREAM_DRAW);
+            gl && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+            gl && gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, draw_list.IdxBuffer, gl.STREAM_DRAW);
+
+            draw_list.IterateDrawCmds((draw_cmd: ImGui.ImDrawCmd): void => {
+                gl || console.log(draw_cmd);
+                gl || console.log("ElemCount", draw_cmd.ElemCount);
+                gl || console.log("ClipRect", draw_cmd.ClipRect.x, draw_cmd.ClipRect.y, draw_cmd.ClipRect.z - draw_cmd.ClipRect.x, draw_cmd.ClipRect.w - draw_cmd.ClipRect.y);
+                gl || console.log("TextureId", draw_cmd.TextureId);
+                if (!gl) {
+                    console.log("i: pos.x pos.y uv.x uv.y col");
+                    for (let i = 0; i < Math.min(3, draw_cmd.ElemCount); ++i) {
+                        const view: ImGui.ImDrawVert = new ImGui.ImDrawVert(draw_list.VtxBuffer.buffer, draw_list.VtxBuffer.byteOffset + i * ImGui.ImDrawVertSize);
+                        console.log(`${i}: ${view.pos[0].toFixed(2)} ${view.pos[1].toFixed(2)} ${view.uv[0].toFixed(5)} ${view.uv[1].toFixed(5)} ${("00000000" + view.col[0].toString(16)).substr(-8)}`);
+                    }
+                }
+
+                if (draw_cmd.UserCallback !== null) {
+                    // User callback (registered via ImDrawList::AddCallback)
+                    draw_cmd.UserCallback(draw_list, draw_cmd);
+                } else {
+                    const clip_rect = new ImGui.ImVec4(draw_cmd.ClipRect.x - pos.x, draw_cmd.ClipRect.y - pos.y, draw_cmd.ClipRect.z - pos.x, draw_cmd.ClipRect.w - pos.y);
+                    if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0 && clip_rect.w >= 0.0) {
+                        // Apply scissor/clipping rectangle
+                        gl && gl.scissor(clip_rect.x, clip_rect.y, clip_rect.z - clip_rect.x, clip_rect.w - clip_rect.y);
+
+                        // Bind texture, Draw
+                        gl && gl.bindTexture(gl.TEXTURE_2D, draw_cmd.TextureId);
+                        gl && gl.drawElements(gl.TRIANGLES, draw_cmd.ElemCount, idx_buffer_type, idx_buffer_offset);
+                    }
+                }
+
+                idx_buffer_offset += draw_cmd.ElemCount * ImGui.ImDrawIdxSize;
+            });
+        });
+
+        // Restore modified GL state
+        
+        gl && (last_program !== null) && gl.useProgram(last_program);
+        gl && (last_texture0 !== null) && gl.bindTexture(gl.TEXTURE_2D, last_texture0);
+        gl && (last_active_texture !== null) && gl.activeTexture(last_active_texture);
+        gl && gl.disableVertexAttribArray(g_AttribLocationPosition);
+        gl && gl.disableVertexAttribArray(g_AttribLocationUV);
+        gl && gl.disableVertexAttribArray(g_AttribLocationColor);
+        gl && (last_vertex_array !== null) && gl.bindVertexArray(last_vertex_array);
+        gl && (last_array_buffer !== null) && gl.bindBuffer(gl.ARRAY_BUFFER, last_array_buffer);
+        gl && (last_element_array_buffer !== null) && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+        gl && (last_viewport !== null) && gl.viewport(last_viewport[0], last_viewport[1], last_viewport[2], last_viewport[3]);
+        gl && (last_scissor_box !== null) && gl.scissor(last_scissor_box[0], last_scissor_box[1], last_scissor_box[2], last_scissor_box[3]);
+        gl && (last_blend_equation_rgb !== null && last_blend_equation_alpha !== null) && gl.blendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+        gl && (last_blend_src_rgb !== null && last_blend_src_alpha !== null && last_blend_dst_rgb !== null && last_blend_dst_alpha !== null) && gl.blendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
+        gl && (last_enable_blend ? gl.enable(gl.BLEND) : gl.disable(gl.BLEND));
+        gl && (last_enable_cull_face ? gl.enable(gl.CULL_FACE) : gl.disable(gl.CULL_FACE));
+        gl && (last_enable_depth_test ? gl.enable(gl.DEPTH_TEST) : gl.disable(gl.DEPTH_TEST));
+        gl && (last_enable_scissor_test ? gl.enable(gl.SCISSOR_TEST) : gl.disable(gl.SCISSOR_TEST));
+        // glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
+    }
+}
+
+let gl: WebGL2RenderingContext = null;
+let app: PIXI.Application = null;
+
+class ImGuiWindowLayer extends PIXI.Sprite
+{
+    public readonly window: ImGuiWindow;
+    constructor(window: ImGuiWindow, tex:PIXI.RenderTexture)
+    {
+        super();
+        this.pluginName = "imgui_renderer";
+        this.window = window;
+    }
+}
+
+export class ImGuiWindow extends PIXI.Container
+{
+    public readonly ctx: ImGui.ImGuiContext;
+    public readonly io: ImGui.ImGuiIO;
+    private sizeX: number;
+    private sizeY: number;
+    public getSizeX(): number { return this.sizeX; }
+    public getSizeY(): number { return this.sizeY; }
+
+    private baseTex: PIXI.BaseRenderTexture = new PIXI.BaseRenderTexture({scaleMode: PIXI.SCALE_MODES.LINEAR, resolution: 1, type: PIXI.TYPES.FLOAT, format: PIXI.FORMATS.RGBA});
+    private tex: PIXI.RenderTexture = new PIXI.RenderTexture(this.baseTex);
+    
+    private surface: PIXI.Sprite = new PIXI.Sprite(this.tex);
+    private imgui: ImGuiWindowLayer = new ImGuiWindowLayer(this, this.tex);
+    
+    private update: (dt: number) => void;
+    constructor(sizeX: number, sizeY: number, update: (dt: number) => void)
+    {
+        super();
+
+        this.ctx = ImGui.CreateContext(contextIOs.length == 0 ? null : contextIOs[0].Fonts);
+        ImGui.SetCurrentContext(this.ctx);
+        this.io = ImGui.GetIO();
+
+        contexts.push(this.ctx);
+        contextIOs.push(this.io);
+
+        if (contexts.length == 1)
+        {
+            CreateFontsTexture();
+        }
+
+        if (typeof(window) !== "undefined") {
+            ImGui.LoadIniSettingsFromMemory(window.localStorage.getItem("imgui.ini") || "");
+        }
+
+        if (typeof(navigator) !== "undefined") {
+            this.io.ConfigMacOSXBehaviors = navigator.platform.match(/Mac/) !== null;
+        }
+
+        this.io.SetClipboardTextFn = (user_data: any, text: string): void => {
+            clipboard_text = text;
+            // console.log(`set clipboard_text: "${clipboard_text}"`);
+            if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+                // console.log(`clipboard.writeText: "${clipboard_text}"`);
+                (navigator as any).clipboard.writeText(clipboard_text).then((): void => {
+                    // console.log(`clipboard.writeText: "${clipboard_text}" done.`);
+                });
+            }
+        };
+        this.io.GetClipboardTextFn = (user_data: any): string => {
+            // if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+            //     console.log(`clipboard.readText: "${clipboard_text}"`);
+            //     (navigator as any).clipboard.readText().then((text: string): void => {
+            //         clipboard_text = text;
+            //         console.log(`clipboard.readText: "${clipboard_text}" done.`);
+            //     });
+            // }
+            // console.log(`get clipboard_text: "${clipboard_text}"`);
+            return clipboard_text;
+        };
+        this.io.ClipboardUserData = null;
+
+        // Setup back-end capabilities flags
+        this.io.BackendFlags |= ImGui.BackendFlags.HasMouseCursors;   // We can honor GetMouseCursor() values (optional)
+
+        // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+        this.io.KeyMap[ImGui.Key.Tab] = 9;
+        this.io.KeyMap[ImGui.Key.LeftArrow] = 37;
+        this.io.KeyMap[ImGui.Key.RightArrow] = 39;
+        this.io.KeyMap[ImGui.Key.UpArrow] = 38;
+        this.io.KeyMap[ImGui.Key.DownArrow] = 40;
+        this.io.KeyMap[ImGui.Key.PageUp] = 33;
+        this.io.KeyMap[ImGui.Key.PageDown] = 34;
+        this.io.KeyMap[ImGui.Key.Home] = 36;
+        this.io.KeyMap[ImGui.Key.End] = 35;
+        this.io.KeyMap[ImGui.Key.Insert] = 45;
+        this.io.KeyMap[ImGui.Key.Delete] = 46;
+        this.io.KeyMap[ImGui.Key.Backspace] = 8;
+        this.io.KeyMap[ImGui.Key.Space] = 32;
+        this.io.KeyMap[ImGui.Key.Enter] = 13;
+        this.io.KeyMap[ImGui.Key.Escape] = 27;
+        this.io.KeyMap[ImGui.Key.A] = 65;
+        this.io.KeyMap[ImGui.Key.C] = 67;
+        this.io.KeyMap[ImGui.Key.V] = 86;
+        this.io.KeyMap[ImGui.Key.X] = 88;
+        this.io.KeyMap[ImGui.Key.Y] = 89;
+        this.io.KeyMap[ImGui.Key.Z] = 90;
+
+        this.update = update;
+        this.resize(sizeX, sizeY);
+        this.imgui.pluginName = 'imgui_renderer';
+        this.addChild(this.surface);
+        app.renderer.plugins.interaction.addListener("mousedown", this.mouseDown.bind(this));
+        app.renderer.plugins.interaction.addListener("mouseup", this.mouseUp.bind(this));
+        app.ticker.add(this.updateInternal.bind(this));
+
+        this.interactive = false;
+        this.interactiveChildren = true;
+
+        this.surface.interactive = false;
+    }
+    withContext(cb: () => void)
+    {
+        ImGui.SetCurrentContext(this.ctx);
+        cb();
+    }
+    mouseDown(e: PIXI.interaction.InteractionEvent): void
+    {
+        if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface)
+        {
+            this.io.MouseDown[mouse_button_map[0]] = true;
+        }
+    }
+    mouseUp(e: PIXI.interaction.InteractionEvent): void
+    {
+        if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface)
+        {
+            this.io.MouseDown[mouse_button_map[0]] = false;
+        }
+    }
+    resize(sizeX: number, sizeY: number)
+    {
+        this.sizeX = sizeX;
+        this.sizeY = sizeY;
+        this.baseTex.resize(sizeX, sizeY);
+        this.tex.frame = new PIXI.Rectangle(0, 0, this.baseTex.width, this.baseTex.height);
+    }
+    updateInternal(deltaTime: number)
+    {
+        const dt: number = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+
+        ImGui.SetCurrentContext(this.ctx);
+
+        if (this.io.WantSaveIniSettings) {
+            this.io.WantSaveIniSettings = false;
+            if (typeof(window) !== "undefined") {
+                window.localStorage.setItem("imgui.ini", ImGui.SaveIniSettingsToMemory());
+            }
+        }
+
+        this.io.DisplaySize.x = this.sizeX;
+        this.io.DisplaySize.y = this.sizeY;
+        this.io.DisplayFramebufferScale.x = 1;
+        this.io.DisplayFramebufferScale.y = 1;
+
+        this.io.DeltaTime = dt;
+
+        let localPos: PIXI.Point = this.toLocal(app.renderer.plugins.interaction.mouse.global);
+        if (localPos.x < 0 || localPos.y < 0 || localPos.x >= this.sizeX || localPos.y >= this.sizeY)
+        {
+            localPos = new PIXI.Point(-Number.MAX_VALUE, -Number.MAX_VALUE);
+        }
+        this.io.MousePos.x = localPos.x;
+        this.io.MousePos.y = localPos.y;
+
+        if (this.io.WantSetMousePos) {
+            console.log("TODO: MousePos", this.io.MousePos.x, this.io.MousePos.y);
+        }
+
+        if (typeof(document) !== "undefined") {
+            if (this.io.MouseDrawCursor) {
+                document.body.style.cursor = "none";
+            } else {
+                switch (ImGui.GetMouseCursor()) {
+                    case ImGui.MouseCursor.None: document.body.style.cursor = "none"; break;
+                    default: case ImGui.MouseCursor.Arrow: document.body.style.cursor = "default"; break;
+                    case ImGui.MouseCursor.TextInput: document.body.style.cursor = "text"; break;         // When hovering over InputText, etc.
+                    case ImGui.MouseCursor.ResizeAll: document.body.style.cursor = "move"; break;         // Unused
+                    case ImGui.MouseCursor.ResizeNS: document.body.style.cursor = "ns-resize"; break;     // When hovering over an horizontal border
+                    case ImGui.MouseCursor.ResizeEW: document.body.style.cursor = "ew-resize"; break;     // When hovering over a vertical border or a column
+                    case ImGui.MouseCursor.ResizeNESW: document.body.style.cursor = "nesw-resize"; break; // When hovering over the bottom-left corner of a window
+                    case ImGui.MouseCursor.ResizeNWSE: document.body.style.cursor = "nwse-resize"; break; // When hovering over the bottom-right corner of a window
+                    case ImGui.MouseCursor.Hand: document.body.style.cursor = "move"; break;
+                }
+            }
+        }
+
+        // Gamepad navigation mapping [BETA]
+        for (let i = 0; i < this.io.NavInputs.length; ++i) {
+            this.io.NavInputs[i] = 0.0;
+        }
+        if (this.io.ConfigFlags & ImGui.ConfigFlags.NavEnableGamepad) {
+            // Update gamepad inputs
+            const gamepads: (Gamepad | null)[] = (typeof(navigator) !== "undefined" && typeof(navigator.getGamepads) === "function") ? navigator.getGamepads() : [];
+            for (let i = 0; i < gamepads.length; ++i) {
+                const gamepad: Gamepad | null = gamepads[i];
+                if (!gamepad) { continue; }
+                const buttons_count: number = gamepad.buttons.length;
+                const axes_count: number = gamepad.axes.length;
+                const MAP_BUTTON = function(NAV_NO: number, BUTTON_NO: number): void {
+                    if (!gamepad) { return; }
+                    if (buttons_count > BUTTON_NO && gamepad.buttons[BUTTON_NO].pressed)
+                        this.io.NavInputs[NAV_NO] = 1.0;
+                }
+                const MAP_ANALOG = function(NAV_NO: number, AXIS_NO: number, V0: number, V1: number): void {
+                    if (!gamepad) { return; }
+                    let v: number = (axes_count > AXIS_NO) ? gamepad.axes[AXIS_NO] : V0;
+                    v = (v - V0) / (V1 - V0);
+                    if (v > 1.0) v = 1.0;
+                    if (this.io.NavInputs[NAV_NO] < v) this.io.NavInputs[NAV_NO] = v;
+                }
+                // TODO: map input based on vendor and product id
+                // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/id
+                const match: RegExpMatchArray | null = gamepad.id.match(/^([0-9a-f]{4})-([0-9a-f]{4})-.*$/);
+                const match_chrome: RegExpMatchArray | null = gamepad.id.match(/^.*\(.*Vendor: ([0-9a-f]{4}) Product: ([0-9a-f]{4})\).*$/);
+                const vendor: string = (match && match[1]) || (match_chrome && match_chrome[1]) || "0000";
+                const product: string = (match && match[2]) || (match_chrome && match_chrome[2]) || "0000";
+                switch (vendor + product) {
+                    case "046dc216": // Logitech Logitech Dual Action (Vendor: 046d Product: c216)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    1); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      2); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        0); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_ANALOG(ImGui.NavInput.DpadLeft,    4, -0.3, -0.9); // D-Pad Left
+                    MAP_ANALOG(ImGui.NavInput.DpadRight,   4, +0.3, +0.9); // D-Pad Right
+                    MAP_ANALOG(ImGui.NavInput.DpadUp,      5, -0.3, -0.9); // D-Pad Up
+                    MAP_ANALOG(ImGui.NavInput.DpadDown,    5, +0.3, +0.9); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   6); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   7); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    case "046dc21d": // Logitech Gamepad F310 (STANDARD GAMEPAD Vendor: 046d Product: c21d)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    0); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      1); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        2); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_BUTTON(ImGui.NavInput.DpadLeft,    14); // D-Pad Left
+                    MAP_BUTTON(ImGui.NavInput.DpadRight,   15); // D-Pad Right
+                    MAP_BUTTON(ImGui.NavInput.DpadUp,      12); // D-Pad Up
+                    MAP_BUTTON(ImGui.NavInput.DpadDown,    13); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_ANALOG(ImGui.NavInput.TweakSlow,   6, +0.3, +0.9); // L2 / LT
+                    MAP_ANALOG(ImGui.NavInput.TweakFast,   7, +0.3, +0.9); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    case "2dc86001": // 8Bitdo SN30 Pro  8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6001)
+                    case "2dc86101": // 8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6101)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    1); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      0); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        4); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_ANALOG(ImGui.NavInput.DpadLeft,    6, -0.3, -0.9); // D-Pad Left
+                    MAP_ANALOG(ImGui.NavInput.DpadRight,   6, +0.3, +0.9); // D-Pad Right
+                    MAP_ANALOG(ImGui.NavInput.DpadUp,      7, -0.3, -0.9); // D-Pad Up
+                    MAP_ANALOG(ImGui.NavInput.DpadDown,    7, +0.3, +0.9); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   6); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   7); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   8); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   9); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    default: // standard gamepad: https://w3c.github.io/gamepad/#remapping
+                    MAP_BUTTON(ImGui.NavInput.Activate,    0); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      1); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        2); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_BUTTON(ImGui.NavInput.DpadLeft,    14); // D-Pad Left
+                    MAP_BUTTON(ImGui.NavInput.DpadRight,   15); // D-Pad Right
+                    MAP_BUTTON(ImGui.NavInput.DpadUp,      12); // D-Pad Up
+                    MAP_BUTTON(ImGui.NavInput.DpadDown,    13); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   6); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   7); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                }
+            }
+        }
+
+        ImGui.NewFrame();
+
+        this.update(dt);
+
+        ImGui.EndFrame();
+        ImGui.Render();
+
+        app.renderer.render(this.imgui, this.tex);
+
+        this.surface.interactive = this.io.WantCaptureMouse;
+    }
+}
+
+let canvas: HTMLCanvasElement | null = null;
+
+//export let gl: WebGL2RenderingContext | null = null;
+let g_ShaderHandle: WebGLProgram | null = null;
+let g_VertHandle: WebGLShader | null = null;
+let g_FragHandle: WebGLShader | null = null;
+let g_AttribLocationTex: WebGLUniformLocation | null = null;
+let g_AttribLocationProjMtx: WebGLUniformLocation | null = null;
+let g_AttribLocationPosition: GLint = -1;
+let g_AttribLocationUV: GLint = -1;
+let g_AttribLocationColor: GLint = -1;
+let g_VaoHandle: WebGLVertexArrayObject = null;
+let g_VboHandle: WebGLBuffer | null = null;
+let g_ElementsHandle: WebGLBuffer | null = null;
+let g_FontTexture: WebGLTexture | null = null;
+
+function document_on_copy(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        event.clipboardData.setData("text/plain", clipboard_text);
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function document_on_cut(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        event.clipboardData.setData("text/plain", clipboard_text);
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function document_on_paste(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        clipboard_text = event.clipboardData.getData("text/plain");
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function window_on_gamepadconnected(event: any /* GamepadEvent */): void {
+    console.log("Gamepad connected at index %d: %s. %d buttons, %d axes.",
+    event.gamepad.index, event.gamepad.id,
+    event.gamepad.buttons.length, event.gamepad.axes.length);
+}
+
+function window_on_gamepaddisconnected(event: any /* GamepadEvent */): void {
+    console.log("Gamepad disconnected at index %d: %s.",
+    event.gamepad.index, event.gamepad.id);
+}
+
+function canvas_on_blur(event: FocusEvent): void {
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = false;
+        io.KeyShift = false;
+        io.KeyAlt = false;
+        io.KeySuper = false;
+        for (let i = 0; i < io.KeysDown.length; ++i) {
+            io.KeysDown[i] = false;
+        }
+        for (let i = 0; i < io.MouseDown.length; ++i) {
+            io.MouseDown[i] = false;
+        }
+    }
+}
+
+function canvas_on_keydown(event: KeyboardEvent): void {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = event.ctrlKey;
+        io.KeyShift = event.shiftKey;
+        io.KeyAlt = event.altKey;
+        io.KeySuper = event.metaKey;
+        ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+        io.KeysDown[event.keyCode] = true;
+        // forward to the keypress event
+        if (/*io.WantCaptureKeyboard ||*/ event.key === "Tab") {
+            event.preventDefault();
+        }
+    }
+}
+
+function canvas_on_keyup(event: KeyboardEvent): void  {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = event.ctrlKey;
+        io.KeyShift = event.shiftKey;
+        io.KeyAlt = event.altKey;
+        io.KeySuper = event.metaKey;
+        ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+        io.KeysDown[event.keyCode] = false;
+        if (io.WantCaptureKeyboard) {
+            event.preventDefault();
+        }
+    }
+}
+
+function canvas_on_keypress(event: KeyboardEvent): void  {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.AddInputCharacter(event.charCode);
+        if (io.WantCaptureKeyboard) {
+            event.preventDefault();
+        }
+    }
+}
+
+// MouseEvent.button
+// A number representing a given button:
+// 0: Main button pressed, usually the left button or the un-initialized state
+// 1: Auxiliary button pressed, usually the wheel button or the middle button (if present)
+// 2: Secondary button pressed, usually the right button
+// 3: Fourth button, typically the Browser Back button
+// 4: Fifth button, typically the Browser Forward button
+const mouse_button_map: number[] = [ 0, 2, 1, 3, 4 ];
+
+function canvas_on_contextmenu(event: Event): void  {
+    for (var io of contextIOs)
+    {
+        if (io.WantCaptureMouse) { event.preventDefault(); }
+    }
+}
+
+function canvas_on_wheel(event: WheelEvent): void  {
+    for (var io of contextIOs)
+    {
+        let scale: number = 1.0;
+        switch (event.deltaMode) {
+            case event.DOM_DELTA_PIXEL: scale = 0.01; break;
+            case event.DOM_DELTA_LINE: scale = 0.2; break;
+            case event.DOM_DELTA_PAGE: scale = 1.0; break;
+        }
+        io.MouseWheelH = event.deltaX * scale;
+        io.MouseWheel = -event.deltaY * scale; // Mouse wheel: 1 unit scrolls about 5 lines text.
+        if (io.WantCaptureMouse) {
+            event.preventDefault();
+        }
+    }
+}
+
+export function PrePIXIInit(): void
+{
+    PIXI.Renderer.registerPlugin("imgui_renderer", U.fromConstructor(ImGuiImplInternalRenderer));
+}
+
+export function Init(_app: PIXI.Application): void {
+    // Setup Dear ImGui binding
+    ImGui.IMGUI_CHECKVERSION();
+
+    if (typeof(document) !== "undefined") {
+        document.body.addEventListener("copy", document_on_copy);
+        document.body.addEventListener("cut", document_on_cut);
+        document.body.addEventListener("paste", document_on_paste);
+    }
+
+    if (typeof(window) !== "undefined") {
+        window.addEventListener("gamepadconnected", window_on_gamepadconnected);
+        window.addEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+    }
+
+    app = _app;
+    gl = (app.renderer as any).gl;
+    canvas = app.view;
+
+    gl.getExtension("EXT_color_buffer_float");
+
+    if (canvas !== null) {
+        canvas.style.touchAction = "none"; // Disable browser handling of all panning and zooming gestures.
+        canvas.addEventListener("blur", canvas_on_blur);
+        canvas.addEventListener("keydown", canvas_on_keydown);
+        canvas.addEventListener("keyup", canvas_on_keyup);
+        canvas.addEventListener("keypress", canvas_on_keypress);
+        canvas.addEventListener("contextmenu", canvas_on_contextmenu);
+        canvas.addEventListener("wheel", canvas_on_wheel);
+    }
+
+    CreateDeviceObjects();
+}
+
+export function Shutdown(): void {
+    DestroyDeviceObjects();
+
+    if (canvas !== null) {
+        canvas.removeEventListener("blur", canvas_on_blur);
+        canvas.removeEventListener("keydown", canvas_on_keydown);
+        canvas.removeEventListener("keyup", canvas_on_keyup);
+        canvas.removeEventListener("keypress", canvas_on_keypress);
+        canvas.removeEventListener("contextmenu", canvas_on_contextmenu);
+        canvas.removeEventListener("wheel", canvas_on_wheel);
+    }
+
+    app = null;
+    canvas = null;
+
+    if (typeof(window) !== "undefined") {
+        window.removeEventListener("gamepadconnected", window_on_gamepadconnected);
+        window.removeEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+    }
+
+    if (typeof(document) !== "undefined") {
+        document.body.removeEventListener("copy", document_on_copy);
+        document.body.removeEventListener("cut", document_on_cut);
+        document.body.removeEventListener("paste", document_on_paste);
+    }
+}
+
+function CreateFontsTexture(): void {
+    const io = ImGui.GetIO();
+
+    // Backup GL state
+    const last_texture: WebGLTexture | null = gl && gl.getParameter(gl.TEXTURE_BINDING_2D);
+
+    // Build texture atlas
+    // const width: number = 256;
+    // const height: number = 256;
+    // const pixels: Uint8Array = new Uint8Array(4 * width * height).fill(0xff);
+    const { width, height, pixels } = io.Fonts.GetTexDataAsRGBA32();   // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+    // console.log(`font texture ${width} x ${height} @ ${pixels.length}`);
+
+    // Upload texture to graphics system
+    g_FontTexture = gl && gl.createTexture();
+    gl && gl.bindTexture(gl.TEXTURE_2D, g_FontTexture);
+    gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+    gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+    // gl && gl.pixelStorei(gl.UNPACK_ROW_LENGTH); // WebGL2
+    gl && gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+
+    // Store our identifier
+    io.Fonts.TexID = g_FontTexture || { foo: "bar" };
+    // console.log("font texture id", g_FontTexture);
+
+    // Restore modified GL state
+    gl && last_texture && gl.bindTexture(gl.TEXTURE_2D, last_texture);
+}
+
+function DestroyFontsTexture(): void {
+    const io = ImGui.GetIO();
+    io.Fonts.TexID = null;
+    gl && gl.deleteTexture(g_FontTexture); g_FontTexture = null;
+}
+
+function CreateDeviceObjects(): void {
+    const vertex_shader: string[] = [
+        "#version 300 es",
+        "uniform mat4 ProjMtx;",
+        "in vec2 Position;",
+        "in vec2 UV;",
+        "in vec4 Color;",
+        "out vec2 Frag_UV;",
+        "out vec4 Frag_Color;",
+        "void main() {",
+        "	Frag_UV = UV;",
+        "	Frag_Color = Color;",
+        "	gl_Position = ProjMtx * vec4(Position.xy,0,1);",
+        "}",
+    ];
+
+    const fragment_shader: string[] = [
+        "#version 300 es",
+        "precision mediump float;", // WebGL requires precision specifiers
+        "uniform sampler2D Texture;",
+        "in vec2 Frag_UV;",
+        "in vec4 Frag_Color;",
+        "out vec4 OutColor;",
+        "void main() {",
+        "	OutColor = Frag_Color * texture(Texture, Frag_UV);",
+        "}",
+    ];
+
+    g_ShaderHandle = gl && gl.createProgram();
+    g_VertHandle = gl && gl.createShader(gl.VERTEX_SHADER);
+    g_FragHandle = gl && gl.createShader(gl.FRAGMENT_SHADER);
+    gl && gl.shaderSource(g_VertHandle as WebGLShader, vertex_shader.join("\n"));
+    gl && gl.shaderSource(g_FragHandle as WebGLShader, fragment_shader.join("\n"));
+    gl && gl.compileShader(g_VertHandle as WebGLShader);
+    gl && gl.compileShader(g_FragHandle as WebGLShader);
+    gl && gl.attachShader(g_ShaderHandle as WebGLProgram, g_VertHandle as WebGLShader);
+    gl && gl.attachShader(g_ShaderHandle as WebGLProgram, g_FragHandle as WebGLShader);
+    gl && gl.linkProgram(g_ShaderHandle as WebGLProgram);
+
+    g_AttribLocationTex = gl && gl.getUniformLocation(g_ShaderHandle as WebGLProgram, "Texture");
+    g_AttribLocationProjMtx = gl && gl.getUniformLocation(g_ShaderHandle as WebGLProgram, "ProjMtx");
+    g_AttribLocationPosition = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "Position") || 0;
+    g_AttribLocationUV = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "UV") || 0;
+    g_AttribLocationColor = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "Color") || 0;
+
+    g_VaoHandle = gl && gl.createVertexArray();
+    g_VboHandle = gl && gl.createBuffer();
+    g_ElementsHandle = gl && gl.createBuffer();
+
+}
+
+function DestroyDeviceObjects(): void {
+    DestroyFontsTexture();
+
+    gl && gl.deleteVertexArray(g_VaoHandle); g_VaoHandle = null;
+    gl && gl.deleteBuffer(g_VboHandle); g_VboHandle = null;
+    gl && gl.deleteBuffer(g_ElementsHandle); g_ElementsHandle = null;
+
+    g_AttribLocationTex = null;
+    g_AttribLocationProjMtx = null;
+    g_AttribLocationPosition = -1;
+    g_AttribLocationUV = -1;
+    g_AttribLocationColor = -1;
+
+    gl && gl.deleteProgram(g_ShaderHandle); g_ShaderHandle = null;
+    gl && gl.deleteShader(g_VertHandle); g_VertHandle = null;
+    gl && gl.deleteShader(g_FragHandle); g_FragHandle = null;
+}
diff --git a/src/main.js b/src/main.js
index f763140..0c19249 100644
--- a/src/main.js
+++ b/src/main.js
@@ -1,4 +1,4 @@
-System.register(["../imgui-js/example/imgui_impl", "imgui-js"], function (exports_1, context_1) {
+System.register(["./imgui_impl", "imgui-js", "pixi.js", "./utils"], function (exports_1, context_1) {
     "use strict";
     var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
         return new (P || (P = Promise))(function (resolve, reject) {
@@ -8,7 +8,7 @@
             step((generator = generator.apply(thisArg, _arguments || [])).next());
         });
     };
-    var ImGui_Impl, ImGui, imgui_js_1, imgui_js_2, clearColor, windowOpen, text;
+    var ImGui_Impl, imgui_impl_1, ImGui, imgui_js_1, imgui_js_2, PIXI, U, clearColor;
     var __moduleName = context_1 && context_1.id;
     function main() {
         return __awaiter(this, void 0, void 0, function* () {
@@ -20,74 +20,88 @@
     function init() {
         console.log("init()");
         console.log("Total allocated space (uordblks) @ _init:", ImGui.bind.mallinfo().uordblks);
-        // Setup Dear ImGui binding
-        ImGui.IMGUI_CHECKVERSION();
-        ImGui.CreateContext();
-        const io = ImGui.GetIO();
-        io.ConfigFlags |= ImGui.ConfigFlags.NavEnableKeyboard; // Enable Keyboard Controls
-        // Setup style
-        ImGui.StyleColorsLight();
+        ImGui_Impl.PrePIXIInit();
+        let settings = { width: 1, height: 1, antialias: true, backgroundColor: U.vec2col(clearColor) };
+        let app = new PIXI.Application(settings);
         const output = document.getElementById("output") || document.body;
-        const canvas = document.createElement("canvas");
-        output.appendChild(canvas);
-        canvas.tabIndex = 1;
-        canvas.style.position = "absolute";
-        canvas.style.left = "0px";
-        canvas.style.right = "0px";
-        canvas.style.top = "0px";
-        canvas.style.bottom = "0px";
-        canvas.style.width = "100%";
-        canvas.style.height = "100%";
-        ImGui_Impl.Init(canvas);
-        window.requestAnimationFrame(loop);
+        output.appendChild(app.view);
+        app.view.tabIndex = 1;
+        app.view.style.position = "absolute";
+        app.view.style.left = "0px";
+        app.view.style.right = "0px";
+        app.view.style.top = "0px";
+        app.view.style.bottom = "0px";
+        app.view.style.width = "100%";
+        app.view.style.height = "100%";
+        ImGui_Impl.Init(app);
+        app.ticker.add((deltaTime) => {
+            const dt = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+            app.render();
+        });
+        let resizeFunc = function () {
+            app.renderer.resize(window.innerWidth, window.innerHeight);
+        };
+        let bg = new PIXI.Graphics();
+        bg.beginFill(0xFF0000);
+        bg.drawRect(100, 100, 300, 300);
+        bg.endFill();
+        let styleCb = () => { ImGui.StyleColorsLight(); };
+        const imgui = new imgui_impl_1.ImGuiWindow(512, 512, makeUpdate());
+        const imgui2 = new imgui_impl_1.ImGuiWindow(512, 512, makeUpdate2());
+        imgui2.x = 200;
+        imgui2.y = 400;
+        imgui.withContext(styleCb);
+        imgui2.withContext(styleCb);
+        app.stage.addChild(imgui);
+        app.stage.addChild(bg);
+        app.stage.addChild(imgui2);
+        window.onresize = resizeFunc;
+        resizeFunc();
     }
-    function render(timeElapsed) {
-        ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(600, 400), ImGui.ImGuiCond.Always);
-        ImGui.Begin("Test Window", (_ = windowOpen) => windowOpen = _, 0);
-        if (ImGui.Button("Add Text")) {
-            text += "A";
-        }
-        ImGui.Text(text);
-        ImGui.End();
+    function makeUpdate() {
+        let text = "text";
+        return (timeElapsed) => {
+            ImGui.SetNextWindowPos(new imgui_js_2.ImVec2(0, 0));
+            ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(500, 500), ImGui.ImGuiCond.Always);
+            ImGui.Begin("Test Window");
+            if (ImGui.Button("Add Text")) {
+                text += "A";
+            }
+            ImGui.Text(text);
+            ImGui.End();
+        };
     }
-    function loop(timeElapsed) {
-        ImGui_Impl.NewFrame(timeElapsed);
-        ImGui.NewFrame();
-        render(timeElapsed);
-        ImGui.EndFrame();
-        // Rendering
-        ImGui.Render();
-        const gl = ImGui_Impl.gl;
-        if (gl) {
-            gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
-            gl.clearColor(clearColor.x, clearColor.y, clearColor.z, clearColor.w);
-            gl.clear(gl.COLOR_BUFFER_BIT);
-            //gl.useProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound
-        }
-        const ctx = ImGui_Impl.ctx;
-        if (ctx) {
-            // ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-            ctx.fillStyle = `rgba(${clearColor.x * 0xff}, ${clearColor.y * 0xff}, ${clearColor.z * 0xff}, ${clearColor.w})`;
-            ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-        }
-        ImGui_Impl.RenderDrawData(ImGui.GetDrawData());
-        window.requestAnimationFrame(loop);
+    function makeUpdate2() {
+        let text = "";
+        return (timeElapsed) => {
+            ImGui.SetNextWindowPos(new imgui_js_2.ImVec2(0, 0));
+            ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(500, 500), ImGui.ImGuiCond.Always);
+            ImGui.Begin("Test Window 2");
+            ImGui.InputText("Input: ", (_ = text) => text = _);
+            ImGui.Text(text);
+            ImGui.End();
+        };
     }
     return {
         setters: [
             function (ImGui_Impl_1) {
                 ImGui_Impl = ImGui_Impl_1;
+                imgui_impl_1 = ImGui_Impl_1;
             },
             function (ImGui_1) {
                 ImGui = ImGui_1;
                 imgui_js_1 = ImGui_1;
                 imgui_js_2 = ImGui_1;
+            },
+            function (PIXI_1) {
+                PIXI = PIXI_1;
+            },
+            function (U_1) {
+                U = U_1;
             }
         ],
         execute: function () {
             clearColor = new imgui_js_1.ImVec4(0.7, 0.9, 1, 1);
-            windowOpen = true;
-            text = "text";
             (function () {
                 if (document.readyState == "complete") {
                     main();
diff --git a/src/main.js.map b/src/main.js.map
index d10898e..c4ec491 100644
--- a/src/main.js.map
+++ b/src/main.js.map
@@ -1 +1 @@
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\ No newline at end of file
+{"version":3,"file":"main.js","sourceRoot":"","sources":["main.ts"],"names":[],"mappings":";;;;;;;;;;;;IASA,SAAe,IAAI;;YAEf,OAAO,CAAC,GAAG,CAAC,QAAQ,CAAC,CAAC;YACtB,MAAM,KAAK,CAAC,OAAO,EAAE,CAAC;YACtB,MAAM,CAAC,qBAAqB,CAAC,IAAI,CAAC,CAAC;QACvC,CAAC;KAAA;IAGD,SAAS,IAAI;QAET,OAAO,CAAC,GAAG,CAAC,QAAQ,CAAC,CAAC;QACtB,OAAO,CAAC,GAAG,CAAC,2CAA2C,EAAE,KAAK,CAAC,IAAI,CAAC,QAAQ,EAAE,CAAC,QAAQ,CAAC,CAAC;QAEzF,UAAU,CAAC,WAAW,EAAE,CAAC;QAEzB,IAAI,QAAQ,GAAG,EAAE,KAAK,EAAE,CAAC,EAAE,MAAM,EAAE,CAAC,EAAE,SAAS,EAAE,IAAI,EAAE,eAAe,EAAE,CAAC,CAAC,OAAO,CAAC,UAAU,CAAC,EAAE,CAAC;QAEhG,IAAI,GAAG,GAAsB,IAAI,IAAI,CAAC,WAAW,CAAC,QAAQ,CAAC,CAAC;QAE5D,MAAM,MAAM,GAAgB,QAAQ,CAAC,cAAc,CAAC,QAAQ,CAAC,IAAI,QAAQ,CAAC,IAAI,CAAC;QAC/E,MAAM,CAAC,WAAW,CAAC,GAAG,CAAC,IAAI,CAAC,CAAC;QAC7B,GAAG,CAAC,IAAI,CAAC,QAAQ,GAAG,CAAC,CAAC;QACtB,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,QAAQ,GAAG,UAAU,CAAC;QACrC,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,IAAI,GAAG,KAAK,CAAC;QAC5B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,KAAK,GAAG,KAAK,CAAC;QAC7B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,GAAG,GAAG,KAAK,CAAC;QAC3B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,MAAM,GAAG,KAAK,CAAC;QAC9B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,KAAK,GAAG,MAAM,CAAC;QAC9B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,MAAM,GAAG,MAAM,CAAC;QAE/B,UAAU,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC;QAErB,GAAG,CAAC,MAAM,CAAC,GAAG,CACV,CAAC,SAAiB,EAAE,EAAE;YAElB,MAAM,EAAE,GAAW,SAAS,GAAG,CAAC,GAAG,CAAC,IAAI,GAAG,IAAI,CAAC,QAAQ,CAAC,WAAW,CAAC,CAAC;YAEtE,GAAG,CAAC,MAAM,EAAE,CAAC;QACjB,CAAC,CACJ,CAAC;QAGF,IAAI,UAAU,GAAG;YAEb,GAAG,CAAC,QAAQ,CAAC,MAAM,CAAC,MAAM,CAAC,UAAU,EAAE,MAAM,CAAC,WAAW,CAAC,CAAC;QAC/D,CAAC,CAAC;QAEF,IAAI,EAAE,GAAkB,IAAI,IAAI,CAAC,QAAQ,EAAE,CAAC;QAC5C,EAAE,CAAC,SAAS,CAAC,QAAQ,CAAC,CAAC;QACvB,EAAE,CAAC,QAAQ,CAAC,GAAG,EAAE,GAAG,EAAE,GAAG,EAAE,GAAG,CAAC,CAAC;QAChC,EAAE,CAAC,OAAO,EAAE,CAAC;QAEb,IAAI,OAAO,GAAe,GAAG,EAAE,GAAG,KAAK,CAAC,gBAAgB,EAAE,CAAC,CAAC,CAAC,CAAC;QAE9D,MAAM,KAAK,GAAgB,IAAI,wBAAW,CAAC,GAAG,EAAE,GAAG,EAAE,UAAU,EAAE,CAAC,CAAC;QACnE,MAAM,MAAM,GAAgB,IAAI,wBAAW,CAAC,GAAG,EAAE,GAAG,EAAE,WAAW,EAAE,CAAC,CAAC;QACrE,MAAM,CAAC,CAAC,GAAG,GAAG,CAAC;QACf,MAAM,CAAC,CAAC,GAAG,GAAG,CAAC;QAEf,KAAK,CAAC,WAAW,CAAC,OAAO,CAAC,CAAC;QAC3B,MAAM,CAAC,WAAW,CAAC,OAAO,CAAC,CAAC;QAE5B,GAAG,CAAC,KAAK,CAAC,QAAQ,CAAC,KAAK,CAAC,CAAC;QAC1B,GAAG,CAAC,KAAK,CAAC,QAAQ,CAAC,EAAE,CAAC,CAAC;QACvB,GAAG,CAAC,KAAK,CAAC,QAAQ,CAAC,MAAM,CAAC,CAAC;QAE3B,MAAM,CAAC,QAAQ,GAAG,UAAU,CAAC;QAC7B,UAAU,EAAE,CAAC;IACjB,CAAC;IAED,SAAS,UAAU;QAEf,IAAI,IAAI,GAAW,MAAM,CAAC;QAC1B,OAAO,CAAC,WAAmB,EAAE,EAAE;YAE3B,KAAK,CAAC,gBAAgB,CAAC,IAAI,iBAAM,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;YACzC,KAAK,CAAC,iBAAiB,CAAC,IAAI,iBAAM,CAAC,GAAG,EAAE,GAAG,CAAC,EAAE,KAAK,CAAC,SAAS,CAAC,MAAM,CAAC,CAAC;YACtE,KAAK,CAAC,KAAK,CAAC,aAAa,CAAC,CAAC;YAC3B,IAAI,KAAK,CAAC,MAAM,CAAC,UAAU,CAAC,EAC5B;gBACI,IAAI,IAAI,GAAG,CAAC;aACf;YACD,KAAK,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;YACjB,KAAK,CAAC,GAAG,EAAE,CAAC;QAChB,CAAC,CAAC;IACN,CAAC;IAED,SAAS,WAAW;QAEhB,IAAI,IAAI,GAAU,EAAE,CAAC;QACrB,OAAO,CAAC,WAAmB,EAAE,EAAE;YAE3B,KAAK,CAAC,gBAAgB,CAAC,IAAI,iBAAM,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;YACzC,KAAK,CAAC,iBAAiB,CAAC,IAAI,iBAAM,CAAC,GAAG,EAAE,GAAG,CAAC,EAAE,KAAK,CAAC,SAAS,CAAC,MAAM,CAAC,CAAC;YACtE,KAAK,CAAC,KAAK,CAAC,eAAe,CAAC,CAAC;YAC7B,KAAK,CAAC,SAAS,CAAC,SAAS,EAAE,CAAC,CAAC,GAAG,IAAI,EAAE,EAAE,CAAC,IAAI,GAAG,CAAC,CAAC,CAAC;YACnD,KAAK,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;YACjB,KAAK,CAAC,GAAG,EAAE,CAAC;QAChB,CAAC,CAAC;IACN,CAAC;;;;;;;;;;;;;;;;;;;;YA5FK,UAAU,GAAU,IAAI,iBAAM,CAAC,GAAG,EAAE,GAAG,EAAE,CAAC,EAAE,CAAC,CAAC,CAAC;YA8FrD,CAAC;gBAEI,IAAI,QAAQ,CAAC,UAAU,IAAI,UAAU,EACrC;oBACI,IAAI,EAAE,CAAC;iBACV;qBAED;oBACI,MAAM,CAAC,MAAM,GAAG,IAAI,CAAC;iBACxB;YACL,CAAC,CAAC,EAAE,CAAC;QACN,CAAC"}
\ No newline at end of file
diff --git a/src/main.ts b/src/main.ts
index fcf1b3f..026aae6 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,8 +1,11 @@
-import * as ImGui_Impl from "../imgui-js/example/imgui_impl";
+import * as ImGui_Impl from "./imgui_impl";
+import { ImGuiWindow } from "./imgui_impl";
 import * as ImGui from "imgui-js";
 import { ImGuiIO } from "imgui-js"
 import { ImVec4 } from "imgui-js";
 import { ImVec2 } from "imgui-js";
+import * as PIXI from "pixi.js";
+import * as U from "./utils";
 
 async function main(): Promise<void>
 {
@@ -11,82 +14,98 @@
     window.requestAnimationFrame(init);
 }
 
+const clearColor:ImVec4 = new ImVec4(0.7, 0.9, 1, 1);
 function init(): void
 {
     console.log("init()");
     console.log("Total allocated space (uordblks) @ _init:", ImGui.bind.mallinfo().uordblks);
 
-    // Setup Dear ImGui binding
-    ImGui.IMGUI_CHECKVERSION();
-    ImGui.CreateContext();
+    ImGui_Impl.PrePIXIInit();
 
-    const io: ImGuiIO = ImGui.GetIO();
-    io.ConfigFlags |= ImGui.ConfigFlags.NavEnableKeyboard;  // Enable Keyboard Controls
+    let settings = { width: 1, height: 1, antialias: true, backgroundColor: U.vec2col(clearColor) };
 
-    // Setup style
-    ImGui.StyleColorsLight();
+    let app : PIXI.Application = new PIXI.Application(settings);
 
     const output: HTMLElement = document.getElementById("output") || document.body;
-    const canvas: HTMLCanvasElement = document.createElement("canvas");
-    output.appendChild(canvas);
-    canvas.tabIndex = 1;
-    canvas.style.position = "absolute";
-    canvas.style.left = "0px";
-    canvas.style.right = "0px";
-    canvas.style.top = "0px";
-    canvas.style.bottom = "0px";
-    canvas.style.width = "100%";
-    canvas.style.height = "100%";
-    ImGui_Impl.Init(canvas);
+    output.appendChild(app.view);
+    app.view.tabIndex = 1;
+    app.view.style.position = "absolute";
+    app.view.style.left = "0px";
+    app.view.style.right = "0px";
+    app.view.style.top = "0px";
+    app.view.style.bottom = "0px";
+    app.view.style.width = "100%";
+    app.view.style.height = "100%";
 
-    window.requestAnimationFrame(loop);
-}
+    ImGui_Impl.Init(app);
 
-const clearColor:ImVec4 = new ImVec4(0.7, 0.9, 1, 1);
-let windowOpen: boolean = true;
-let text: string = "text";
-function render(timeElapsed: number): void
-{
-    ImGui.SetNextWindowSize(new ImVec2(600, 400), ImGui.ImGuiCond.Always);
-    ImGui.Begin("Test Window", (_ = windowOpen) => windowOpen = _, 0); 
-    if (ImGui.Button("Add Text"))
+    app.ticker.add(
+        (deltaTime: number) =>
+        {
+            const dt: number = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+
+            app.render();
+        }
+    );
+
+
+    let resizeFunc = function()
     {
-        text += "A";
-    }
-    ImGui.Text(text);
-    ImGui.End();
+        app.renderer.resize(window.innerWidth, window.innerHeight);
+    };
+
+    let bg: PIXI.Graphics = new PIXI.Graphics();
+    bg.beginFill(0xFF0000);
+    bg.drawRect(100, 100, 300, 300);
+    bg.endFill();
+
+    let styleCb: () => void = () => { ImGui.StyleColorsLight(); };
+
+    const imgui: ImGuiWindow = new ImGuiWindow(512, 512, makeUpdate());
+    const imgui2: ImGuiWindow = new ImGuiWindow(512, 512, makeUpdate2());
+    imgui2.x = 200;
+    imgui2.y = 400;
+
+    imgui.withContext(styleCb);
+    imgui2.withContext(styleCb);
+    
+    app.stage.addChild(imgui);
+    app.stage.addChild(bg);
+    app.stage.addChild(imgui2);
+
+    window.onresize = resizeFunc;
+    resizeFunc();
 }
 
-
-function loop(timeElapsed: number): void
+function makeUpdate(): (timeElapsed: number) => void
 {
-    ImGui_Impl.NewFrame(timeElapsed);
-    ImGui.NewFrame();
+    let text: string = "text";
+    return (timeElapsed: number) =>
+    {
+        ImGui.SetNextWindowPos(new ImVec2(0, 0));
+        ImGui.SetNextWindowSize(new ImVec2(500, 500), ImGui.ImGuiCond.Always);
+        ImGui.Begin("Test Window"); 
+        if (ImGui.Button("Add Text"))
+        {
+            text += "A";
+        }
+        ImGui.Text(text);
+        ImGui.End();
+    };
+}
 
-    render(timeElapsed);
-
-    ImGui.EndFrame();
-
-    // Rendering
-    ImGui.Render();
-    const gl: WebGLRenderingContext | null = ImGui_Impl.gl;
-    if (gl) {
-        gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
-        gl.clearColor(clearColor.x, clearColor.y, clearColor.z, clearColor.w);
-        gl.clear(gl.COLOR_BUFFER_BIT);
-        //gl.useProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound
-    }
-
-    const ctx: CanvasRenderingContext2D | null = ImGui_Impl.ctx;
-    if (ctx) {
-        // ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-        ctx.fillStyle = `rgba(${clearColor.x * 0xff}, ${clearColor.y * 0xff}, ${clearColor.z * 0xff}, ${clearColor.w})`;
-        ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-    }
-
-    ImGui_Impl.RenderDrawData(ImGui.GetDrawData());
-
-    window.requestAnimationFrame(loop);
+function makeUpdate2(): (timeElapsed: number) => void
+{
+    let text:string = "";
+    return (timeElapsed: number) =>
+    {
+        ImGui.SetNextWindowPos(new ImVec2(0, 0));
+        ImGui.SetNextWindowSize(new ImVec2(500, 500), ImGui.ImGuiCond.Always);
+        ImGui.Begin("Test Window 2"); 
+        ImGui.InputText("Input: ", (_ = text) => text = _);
+        ImGui.Text(text);
+        ImGui.End();
+    };
 }
 
 (function()
diff --git a/src/utils.js b/src/utils.js
new file mode 100644
index 0000000..c91e062
--- /dev/null
+++ b/src/utils.js
@@ -0,0 +1,20 @@
+System.register([], function (exports_1, context_1) {
+    "use strict";
+    var __moduleName = context_1 && context_1.id;
+    function fromConstructor(constr) {
+        return constr;
+    }
+    exports_1("fromConstructor", fromConstructor);
+    function vec2col(v) {
+        return (((v.x * 255) & 0xFF) << 16) +
+            (((v.y * 255) & 0xFF) << 8) +
+            (((v.z * 255) & 0xFF) << 0);
+    }
+    exports_1("vec2col", vec2col);
+    return {
+        setters: [],
+        execute: function () {
+        }
+    };
+});
+//# sourceMappingURL=utils.js.map
\ No newline at end of file
diff --git a/src/utils.js.map b/src/utils.js.map
new file mode 100644
index 0000000..2d50463
--- /dev/null
+++ b/src/utils.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"utils.js","sourceRoot":"","sources":["utils.ts"],"names":[],"mappings":";;;IAEA,SAAgB,eAAe,CAAC,MAAW;QAEvC,OAAO,MAA6C,CAAA;IACxD,CAAC;;IAED,SAAgB,OAAO,CAAC,CAAS;QAE7B,OAAO,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,GAAG,GAAG,CAAC,GAAG,IAAI,CAAC,IAAI,EAAE,CAAC;YAC5B,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,GAAG,GAAG,CAAC,GAAG,IAAI,CAAC,IAAI,CAAC,CAAC;YAC3B,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,GAAG,GAAG,CAAC,GAAG,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC;IACvC,CAAC;;;;;QACD,CAAC"}
\ No newline at end of file
diff --git a/src/utils.ts b/src/utils.ts
new file mode 100644
index 0000000..f24fb7f
--- /dev/null
+++ b/src/utils.ts
@@ -0,0 +1,13 @@
+import { ImVec4 } from "imgui-js";
+
+export function fromConstructor(constr: any):((params: any[]) => any)
+{
+    return constr as unknown as ((params: any[]) => any)
+}
+
+export function vec2col(v: ImVec4): number
+{
+    return (((v.x * 255) & 0xFF) << 16) +
+           (((v.y * 255) & 0xFF) << 8) +
+           (((v.z * 255) & 0xFF) << 0);
+}

diff --git a/.gitmodules b/.gitmodules
index d6b45d7..fc2be7a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,7 @@
 [submodule "emsdk"]
 	path = emsdk
 	url = https://github.com/emscripten-core/emsdk.git
+	ignore = untracked
+[submodule "pixi.js"]
+	path = pixi.js
+	url = https://git.mhack.io/git/mark/pixi.js.git
diff --git a/imgui-js b/imgui-js
index 9f694ef..9536eca 160000
--- a/imgui-js
+++ b/imgui-js
@@ -1 +1 @@
-Subproject commit 9f694ef7e8e7251c32f7811ba39938951a12097a
+Subproject commit 9536ecad287eb76812087cd3fee1aaacb448c027
diff --git a/indexdev.html b/indexdev.html
index 2f6c3b3..3d27479 100644
--- a/indexdev.html
+++ b/indexdev.html
@@ -2,22 +2,16 @@
     <head>
         <title>7GUI</title>
         <script src="node_modules/systemjs/dist/system.js"></script>
-        <!--
-        <script type="systemjs-importmap">
-            {
-                "imports": {
-                    "imgui-js/example/imgui_impl": "imgui-js/dist/imgui_impl.umd.js"
-                }
-            }
-        </script>
-        -->
         <script>
             System.config({
                 map: {
-                    "imgui-js": "./imgui-js"
+                    "imgui-js": "./imgui-js",
+                    "pixi.js": "./node_modules/pixi.js"
                 },
                 packages: {
-                    "imgui-js": { main: "imgui.js", }
+                    "imgui-js": { main: "imgui.js" },
+                    "pixi.js": { main: "dist/pixi.js" },
+                    "./": { map: { "src/utils": "./src/utils.js", "src/imgui_impl": "./src/imgui_impl.js" } }
                 }
             });
             System.import("./src/main.js");
diff --git a/package-lock.json b/package-lock.json
index ed52494..8bda7e5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,16 +4,34 @@
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+      "resolved": "https://registry.npmjs.org/@types/webgl2/-/webgl2-0.0.5.tgz",
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-      "version": "0.15.0",
-      "resolved": "https://registry.npmjs.org/proxy-middleware/-/proxy-middleware-0.15.0.tgz",
-      "integrity": "sha1-o/3xvvtzD5UZZYcqwvYHTGFHelY=",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz",
+      "integrity": "sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==",
       "dev": true
     },
     "prr": {
@@ -4607,6 +5077,16 @@
         "safe-buffer": "^5.1.2"
       }
     },
+    "punycode": {
+      "version": "1.3.2",
+      "resolved": "https://registry.npmjs.org/punycode/-/punycode-1.3.2.tgz",
+      "integrity": "sha1-llOgNvt8HuQjQvIyXM7v6jkmxI0="
+    },
+    "querystring": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/querystring/-/querystring-0.2.0.tgz",
+      "integrity": "sha1-sgmEkgO7Jd+CDadW50cAWHhSFiA="
+    },
     "randombytes": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/randombytes/-/randombytes-2.1.0.tgz",
@@ -4645,17 +5125,6 @@
         "safe-buffer": "~5.1.1",
         "string_decoder": "~1.1.1",
         "util-deprecate": "~1.0.1"
-      },
-      "dependencies": {
-        "string_decoder": {
-          "version": "1.1.1",
-          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
-          "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
-          "dev": true,
-          "requires": {
-            "safe-buffer": "~5.1.0"
-          }
-        }
       }
     },
     "readdirp": {
@@ -4698,9 +5167,9 @@
       "dev": true
     },
     "resolve": {
-      "version": "1.11.0",
-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.11.0.tgz",
-      "integrity": "sha512-WL2pBDjqT6pGUNSUzMw00o4T7If+z4H2x3Gz893WoUQ5KW8Vr9txp00ykiP16VBaZF5+j/OcXJHZ9+PCvdiDKw==",
+      "version": "1.11.1",
+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.11.1.tgz",
+      "integrity": "sha512-vIpgF6wfuJOZI7KKKSP+HmiKggadPQAdsp5HiC1mvqnfp0gF1vdwgBWZIdrVft9pgqoMFQN+R7BSWZiBxx+BBw==",
       "dev": true,
       "requires": {
         "path-parse": "^1.0.6"
@@ -4712,6 +5181,15 @@
       "integrity": "sha1-LGN/53yJOv0qZj/iGqkIAGjiBSo=",
       "dev": true
     },
+    "resource-loader": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/resource-loader/-/resource-loader-3.0.1.tgz",
+      "integrity": "sha512-fBuCRbEHdLCI1eglzQhUv9Rrdcmqkydr1r6uHE2cYHvRBrcLXeSmbE/qI/urFt8rPr/IGxir3BUwM5kUK8XoyA==",
+      "requires": {
+        "mini-signals": "^1.2.0",
+        "parse-uri": "^1.0.0"
+      }
+    },
     "ret": {
       "version": "0.1.15",
       "resolved": "https://registry.npmjs.org/ret/-/ret-0.1.15.tgz",
@@ -4729,33 +5207,26 @@
       }
     },
     "rollup": {
-      "version": "1.15.6",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.15.6.tgz",
-      "integrity": "sha512-s3Vn3QJQ5YVFfIG4nXoG9VdL1I37IZsft+4ZyeBhxE0df1kCFz9e+4bEAbR4mKH3pvBO9e9xjdxWPhhIp0r9ow==",
+      "version": "1.17.0",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-1.17.0.tgz",
+      "integrity": "sha512-k/j1m0NIsI4SYgCJR4MWPstGJOWfJyd6gycKoMhyoKPVXxm+L49XtbUwZyFsrSU2YXsOkM4u1ll9CS/ZgJBUpw==",
       "requires": {
         "@types/estree": "0.0.39",
-        "@types/node": "^12.0.8",
-        "acorn": "^6.1.1"
-      },
-      "dependencies": {
-        "@types/node": {
-          "version": "12.0.8",
-          "resolved": "https://registry.npmjs.org/@types/node/-/node-12.0.8.tgz",
-          "integrity": "sha512-b8bbUOTwzIY3V5vDTY1fIJ+ePKDUBqt2hC2woVGotdQQhG/2Sh62HOKHrT7ab+VerXAcPyAiTEipPu/FsreUtg=="
-        }
+        "@types/node": "^12.6.2",
+        "acorn": "^6.2.0"
       }
     },
     "rollup-plugin-commonjs": {
-      "version": "10.0.0",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.0.tgz",
-      "integrity": "sha512-B8MoX5GRpj3kW4+YaFO/di2JsZkBxNjVmZ9LWjUoTAjq8N9wc7HObMXPsrvolVV9JXVtYSscflXM14A19dXPNQ==",
+      "version": "10.0.1",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-commonjs/-/rollup-plugin-commonjs-10.0.1.tgz",
+      "integrity": "sha512-x0PcCVdEc4J8igv1qe2vttz8JKAKcTs3wfIA3L8xEty3VzxgORLrzZrNWaVMc+pBC4U3aDOb9BnWLAQ8J11vkA==",
       "dev": true,
       "requires": {
-        "estree-walker": "^0.6.0",
+        "estree-walker": "^0.6.1",
         "is-reference": "^1.1.2",
         "magic-string": "^0.25.2",
-        "resolve": "^1.10.1",
-        "rollup-pluginutils": "^2.7.0"
+        "resolve": "^1.11.0",
+        "rollup-pluginutils": "^2.8.1"
       }
     },
     "rollup-plugin-node-builtins": {
@@ -4771,16 +5242,16 @@
       }
     },
     "rollup-plugin-node-resolve": {
-      "version": "5.0.3",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.0.3.tgz",
-      "integrity": "sha512-Mhhmf0x493xgUPEsRELnU1VM+4+WO82knWkAbZ0d2DvZQZJMbhzyQK/hqtpVscoRru1EqlK3TM1kK9ro469wPw==",
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-5.2.0.tgz",
+      "integrity": "sha512-jUlyaDXts7TW2CqQ4GaO5VJ4PwwaV8VUGA7+km3n6k6xtOEacf61u0VXwN80phY/evMcaS+9eIeJ9MOyDxt5Zw==",
       "dev": true,
       "requires": {
         "@types/resolve": "0.0.8",
         "builtin-modules": "^3.1.0",
         "is-module": "^1.0.0",
-        "resolve": "^1.11.0",
-        "rollup-pluginutils": "^2.8.0"
+        "resolve": "^1.11.1",
+        "rollup-pluginutils": "^2.8.1"
       }
     },
     "rollup-plugin-typescript2": {
@@ -4846,35 +5317,6 @@
       "integrity": "sha1-uYSPJdbPNjMwc+ye+IVtQvEjPlI=",
       "dev": true
     },
-    "send": {
-      "version": "0.17.1",
-      "resolved": "https://registry.npmjs.org/send/-/send-0.17.1.tgz",
-      "integrity": "sha512-BsVKsiGcQMFwT8UxypobUKyv7irCNRHk1T0G680vk88yf6LBByGcZJOTJCrTP2xVN6yI+XjPJcNuE3V4fT9sAg==",
-      "dev": true,
-      "requires": {
-        "debug": "2.6.9",
-        "depd": "~1.1.2",
-        "destroy": "~1.0.4",
-        "encodeurl": "~1.0.2",
-        "escape-html": "~1.0.3",
-        "etag": "~1.8.1",
-        "fresh": "0.5.2",
-        "http-errors": "~1.7.2",
-        "mime": "1.6.0",
-        "ms": "2.1.1",
-        "on-finished": "~2.3.0",
-        "range-parser": "~1.2.1",
-        "statuses": "~1.5.0"
-      },
-      "dependencies": {
-        "ms": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
-          "dev": true
-        }
-      }
-    },
     "serve-index": {
       "version": "1.9.1",
       "resolved": "https://registry.npmjs.org/serve-index/-/serve-index-1.9.1.tgz",
@@ -4902,6 +5344,12 @@
             "statuses": ">= 1.4.0 < 2"
           }
         },
+        "inherits": {
+          "version": "2.0.3",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+          "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+          "dev": true
+        },
         "setprototypeof": {
           "version": "1.1.0",
           "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
@@ -4911,9 +5359,9 @@
       }
     },
     "set-value": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.0.tgz",
-      "integrity": "sha512-hw0yxk9GT/Hr5yJEYnHNKYXkIA8mVJgd9ditYZCe16ZczcaELYYcfvaXesNACk2O8O0nTiPQcQhGUQj8JLzeeg==",
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/set-value/-/set-value-2.0.1.tgz",
+      "integrity": "sha512-JxHc1weCN68wRY0fhCoXpyK55m/XPHafOmK4UWD7m2CI14GMcFypt4w/0+NV5f/ZMby2F6S2wwA7fgynh9gWSw==",
       "dev": true,
       "requires": {
         "extend-shallow": "^2.0.1",
@@ -5082,9 +5530,9 @@
       "dev": true
     },
     "sourcemap-codec": {
-      "version": "1.4.4",
-      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.4.tgz",
-      "integrity": "sha512-CYAPYdBu34781kLHkaW3m6b/uUSyMOC2R61gcYMWooeuaGtjof86ZA/8T+qVPPt7np1085CR9hmMGrySwEc8Xg==",
+      "version": "1.4.6",
+      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.6.tgz",
+      "integrity": "sha512-1ZooVLYFxC448piVLBbtOxFcXwnymH9oUF8nRd3CuYDVvkRBxRl6pB4Mtas5a4drtL+E8LDgFkQNcgIw6tc8Hg==",
       "dev": true
     },
     "split": {
@@ -5148,10 +5596,13 @@
       "dev": true
     },
     "string_decoder": {
-      "version": "0.10.31",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
-      "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
-      "dev": true
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "~5.1.0"
+      }
     },
     "systemjs": {
       "version": "0.21.6",
@@ -5231,44 +5682,21 @@
       "dev": true
     },
     "typescript": {
-      "version": "3.5.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.2.tgz",
-      "integrity": "sha512-7KxJovlYhTX5RaRbUdkAXN1KUZ8PwWlTzQdHV6xNqvuFOs7+WBo10TQUqT19Q/Jz2hk5v9TQDIhyLhhJY4p5AA==",
+      "version": "3.5.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.5.3.tgz",
+      "integrity": "sha512-ACzBtm/PhXBDId6a6sDJfroT2pOWt/oOnk4/dElG5G33ZL776N3Y6/6bKZJBFpd+b05F3Ct9qDjMeJmRWtE2/g==",
       "dev": true
     },
     "union-value": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.0.tgz",
-      "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/union-value/-/union-value-1.0.1.tgz",
+      "integrity": "sha512-tJfXmxMeWYnczCVs7XAEvIV7ieppALdyepWMkHkwciRpZraG/xwT+s2JN8+pr1+8jCRf80FFzvr+MpQeeoF4Xg==",
       "dev": true,
       "requires": {
         "arr-union": "^3.1.0",
         "get-value": "^2.0.6",
         "is-extendable": "^0.1.1",
-        "set-value": "^0.4.3"
-      },
-      "dependencies": {
-        "extend-shallow": {
-          "version": "2.0.1",
-          "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
-          "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
-          "dev": true,
-          "requires": {
-            "is-extendable": "^0.1.0"
-          }
-        },
-        "set-value": {
-          "version": "0.4.3",
-          "resolved": "https://registry.npmjs.org/set-value/-/set-value-0.4.3.tgz",
-          "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=",
-          "dev": true,
-          "requires": {
-            "extend-shallow": "^2.0.1",
-            "is-extendable": "^0.1.1",
-            "is-plain-object": "^2.0.1",
-            "to-object-path": "^0.3.0"
-          }
-        }
+        "set-value": "^2.0.1"
       }
     },
     "universalify": {
@@ -5341,6 +5769,15 @@
       "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
       "dev": true
     },
+    "url": {
+      "version": "0.11.0",
+      "resolved": "https://registry.npmjs.org/url/-/url-0.11.0.tgz",
+      "integrity": "sha1-ODjpfPxgUh63PFJajlW/3Z4uKPE=",
+      "requires": {
+        "punycode": "1.3.2",
+        "querystring": "0.2.0"
+      }
+    },
     "use": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
@@ -5372,12 +5809,13 @@
       "dev": true
     },
     "websocket-driver": {
-      "version": "0.7.0",
-      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.0.tgz",
-      "integrity": "sha1-DK+dLXVdk67gSdS90NP+LMoqJOs=",
+      "version": "0.7.3",
+      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.3.tgz",
+      "integrity": "sha512-bpxWlvbbB459Mlipc5GBzzZwhoZgGEZLuqPaR0INBGnPAY1vdBX6hPnoFXiw+3yWxDuHyQjO2oXTMyS8A5haFg==",
       "dev": true,
       "requires": {
-        "http-parser-js": ">=0.4.0",
+        "http-parser-js": ">=0.4.0 <0.4.11",
+        "safe-buffer": ">=5.1.0",
         "websocket-extensions": ">=0.1.1"
       }
     },
diff --git a/package.json b/package.json
index 07cf1ea..8aafc46 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,9 @@
     "build": "tsc",
     "rollup": "rollup -c",
     "watch": "npx live-server --open=index.html --watch='./*.html,./*.js'",
-    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./*.js'"
+    "watchdev": "npx live-server --open=indexdev.html --watch='./*.html,./src/*.js'",
+    "pixi": "cd pixi.js && npm run local && cd .. && npm run pixi:install",
+    "pixi:install": "rm -rf node_modules/pixi.js && rm package-lock.json"
   },
   "repository": {
     "type": "git",
@@ -17,13 +19,15 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "@types/systemjs": "^0.20.6",
+    "@types/webgl2": "0.0.5",
     "imgui-js": "file:./imgui-js",
+    "pixi.js": "file:pixi.js/bundles/pixi.js/pixi.js-5.1.4.tgz",
     "rollup": "^1.15.6",
     "systemjs": "^0.21.5"
   },
   "devDependencies": {
     "@types/node": "^12.0.0",
+    "@types/systemjs": "^0.20.6",
     "live-server": "^1.2.1",
     "rollup-plugin-commonjs": "^10.0.0",
     "rollup-plugin-node-builtins": "^2.1.2",
diff --git a/pixi.js b/pixi.js
new file mode 160000
index 0000000..1b78731
--- /dev/null
+++ b/pixi.js
@@ -0,0 +1 @@
+Subproject commit 1b78731948b57c635a2e65444c387eed31ec7428
diff --git a/session b/session
index bbf5582..06b9a8d 100644
--- a/session
+++ b/session
@@ -1,322 +1,62 @@
 let SessionLoad = 1
 if &cp | set nocp | endif
-let s:cpo_save=&cpo
-set cpo&vim
-imap <Nul> <C-Space>
-inoremap <expr> <Up> pumvisible() ? "\" : "\<Up>"
-inoremap <expr> <S-Tab> pumvisible() ? "\" : "\<S-Tab>"
-inoremap <expr> <Down> pumvisible() ? "\" : "\<Down>"
-nnoremap <silent>  :TmuxNavigateLeft
-nnoremap <silent> <NL> :TmuxNavigateDown
-nnoremap <silent>  :TmuxNavigateUp
-nnoremap <silent>  :TmuxNavigateRight
-nnoremap <silent>  :TmuxNavigatePrevious
-nnoremap \d :YcmShowDetailedDiagnostic
-vnoremap <silent> \c :call CopyMarkWithCursor("<", ">")
-nnoremap <silent> \c :set opfunc=OpSysCopyMarkg@
-vmap gx <Plug>NetrwBrowseXVis
-nmap gx <Plug>NetrwBrowseX
-vnoremap <silent> <Plug>NetrwBrowseXVis :call netrw#BrowseXVis()
-nnoremap <silent> <Plug>NetrwBrowseX :call netrw#BrowseX(expand((exists("g:netrw_gx")? g:netrw_gx : '<cfile>')),netrw#CheckIfRemote())
-inoremap <expr> 	 pumvisible() ? "\" : "\	"
-let &cpo=s:cpo_save
-unlet s:cpo_save
-set autoindent
-set backspace=indent,eol,start
-set completefunc=youcompleteme#CompleteFunc
-set completeopt=preview,menuone
-set cpoptions=aAceFsB
-set fileencodings=ucs-bom,utf-8,default,latin1
-set fillchars=vert:|,fold:-,vert:│
-set helplang=en
-set hidden
-set include=import_s.\\zs[^'\"]*\\ze
-set includeexpr=TsIncludeExpr(v:fname)
-set nomodeline
-set path=.,/usr/include,,,./node_modules/**,node_modules/**
-set ruler
-set runtimepath=~/.vim,~/.vim/bundle/JustDo,~/.vim/bundle/YouCompleteMe,~/.vim/bundle/vim-easymotion,~/.vim/bundle/vim-tmux-navigator,~/.vim/bundle/yats.vim,/var/lib/vim/addons,/usr/share/vim/vimfiles,/usr/share/vim/vim74,/usr/share/vim/vimfiles/after,/var/lib/vim/addons/after,~/.vim/after
-set sessionoptions=blank,buffers,folds,help,options,tabpages,winsize,sesdir
-set shortmess=filnxtToOc
-set suffixes=.bak,~,.swp,.o,.info,.aux,.log,.dvi,.bbl,.blg,.brf,.cb,.ind,.idx,.ilg,.inx,.out,.toc
-set suffixesadd=.ts
 let s:so_save = &so | let s:siso_save = &siso | set so=0 siso=0
 let v:this_session=expand("<sfile>:p")
 silent only
+silent tabonly
 exe "cd " . escape(expand("<sfile>:p:h"), ' ')
 if expand('%') == '' && !&modified && line('$') <= 1 && getline(1) == ''
   let s:wipebuf = bufnr('%')
 endif
 set shortmess=aoO
+argglobal
+%argdel
+edit src/imgui_impl.ts
+set splitbelow splitright
+set nosplitbelow
+set nosplitright
+wincmd t
+set winminheight=0
+set winheight=1
+set winminwidth=0
+set winwidth=1
+argglobal
+let s:l = 1 - ((0 * winheight(0) + 21) / 42)
+if s:l < 1 | let s:l = 1 | endif
+exe s:l
+normal! zt
+1
+normal! 0
+tabnext 1
+badd +0 src/imgui_impl.ts
 badd +12 rollup.config.js
 badd +7 imgui-js/rollup.config.js
-badd +7 imgui-js/tsconfig.json
-badd +26 tsconfig.json
+badd +4 imgui-js/tsconfig.json
+badd +12 tsconfig.json
 badd +1 index.js
 badd +3904 imgui-js/imgui.ts
-badd +39 src/main.ts
+badd +80 src/main.ts
 badd +52 imgui-js/example/main.ts
-badd +8 package.json
+badd +34 package.json
 badd +1 imgui-js/dist/imgui.d.ts
 badd +1 imgui-js/bind-imgui.js
 badd +1 imgui-js/example/imgui_impl.js
 badd +2 imgui-js/example/imgui_impl.ts
 badd +295 imgui-js/imgui_demo.ts
 badd +4 index.html
-badd +14 indexdev.html
+badd +4 indexdev.html
 badd +6 imgui-js/example/index.html
-badd +2 imgui-js/example/system.config.js
+badd +6 imgui-js/example/system.config.js
 badd +40 imgui-js/package.json
-badd +201 node_modules/systemjs/dist/system.js
-argglobal
-silent! argdel *
-edit package.json
-set splitbelow splitright
-wincmd _ | wincmd |
-split
-1wincmd k
-wincmd w
-set nosplitbelow
-set nosplitright
-wincmd t
-set winheight=1 winwidth=1
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-argglobal
-enew
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=wipe
-setlocal buflisted
-setlocal buftype=nofile
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=s1:/*,mb:*,ex:*/,://,b:#,:%,:XCOMM,n:>,fb:-
-setlocal commentstring=/*%s*/
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != ''
-setlocal filetype=
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=tcq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=
-setlocal indentkeys=0{,0},:,0#,!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal nomodifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal previewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal noswapfile
-setlocal synmaxcol=3000
-if &syntax != ''
-setlocal syntax=
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal winfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-wincmd w
-argglobal
-setlocal keymap=
-setlocal noarabic
-setlocal autoindent
-setlocal backupcopy=
-setlocal nobinary
-setlocal nobreakindent
-setlocal breakindentopt=
-setlocal bufhidden=
-setlocal buflisted
-setlocal buftype=
-setlocal nocindent
-setlocal cinkeys=0{,0},0),:,0#,!^F,o,O,e
-setlocal cinoptions=
-setlocal cinwords=if,else,while,do,for,switch
-setlocal colorcolumn=
-setlocal comments=
-setlocal commentstring=
-setlocal complete=.,w,b,u,t,i
-setlocal concealcursor=
-setlocal conceallevel=0
-setlocal completefunc=youcompleteme#CompleteFunc
-setlocal nocopyindent
-setlocal cryptmethod=
-setlocal nocursorbind
-setlocal nocursorcolumn
-setlocal nocursorline
-setlocal define=
-setlocal dictionary=
-setlocal nodiff
-setlocal equalprg=
-setlocal errorformat=
-setlocal noexpandtab
-if &filetype != 'json'
-setlocal filetype=json
-endif
-setlocal fixendofline
-setlocal foldcolumn=0
-setlocal foldenable
-setlocal foldexpr=0
-setlocal foldignore=#
-setlocal foldlevel=0
-setlocal foldmarker={{{,}}}
-setlocal foldmethod=manual
-setlocal foldminlines=1
-setlocal foldnestmax=20
-setlocal foldtext=foldtext()
-setlocal formatexpr=
-setlocal formatoptions=cq
-setlocal formatlistpat=^\\s*\\d\\+[\\]:.)}\\t\ ]\\s*
-setlocal grepprg=
-setlocal iminsert=0
-setlocal imsearch=0
-setlocal include=
-setlocal includeexpr=TsIncludeExpr(v:fname)
-setlocal indentexpr=GetJSONIndent()
-setlocal indentkeys=0{,0},0),0[,0],!^F,o,O,e
-setlocal noinfercase
-setlocal iskeyword=@,48-57,_,192-255
-setlocal keywordprg=
-setlocal nolinebreak
-setlocal nolisp
-setlocal lispwords=
-setlocal nolist
-setlocal makeprg=
-setlocal matchpairs=(:),{:},[:]
-setlocal nomodeline
-setlocal modifiable
-setlocal nrformats=bin,octal,hex
-set number
-setlocal number
-setlocal numberwidth=4
-setlocal omnifunc=
-setlocal path=
-setlocal nopreserveindent
-setlocal nopreviewwindow
-setlocal quoteescape=\\
-setlocal noreadonly
-setlocal norelativenumber
-setlocal norightleft
-setlocal rightleftcmd=search
-setlocal noscrollbind
-setlocal shiftwidth=8
-setlocal noshortname
-setlocal nosmartindent
-setlocal softtabstop=0
-setlocal nospell
-setlocal spellcapcheck=[.?!]\\_[\\])'\"\	\ ]\\+
-setlocal spellfile=
-setlocal spelllang=en
-setlocal statusline=
-setlocal suffixesadd=.ts
-setlocal swapfile
-setlocal synmaxcol=3000
-if &syntax != 'json'
-setlocal syntax=json
-endif
-setlocal tabstop=8
-setlocal tagcase=
-setlocal tags=
-setlocal textwidth=0
-setlocal thesaurus=
-setlocal noundofile
-setlocal undolevels=-123456
-setlocal nowinfixheight
-setlocal nowinfixwidth
-setlocal wrap
-setlocal wrapmargin=0
-silent! normal! zE
-let s:l = 23 - ((19 * winheight(0) + 15) / 31)
-if s:l < 1 | let s:l = 1 | endif
-exe s:l
-normal! zt
-23
-normal! 024|
-wincmd w
-2wincmd w
-exe '1resize ' . ((&lines * 3 + 18) / 37)
-exe '2resize ' . ((&lines * 31 + 18) / 37)
-tabnext 1
-if exists('s:wipebuf')
+badd +1 node_modules/systemjs/dist/system.js
+badd +1 src/main.js
+badd +1 imgui-js/example/main.js
+if exists('s:wipebuf') && len(win_findbuf(s:wipebuf)) == 0
   silent exe 'bwipe ' . s:wipebuf
 endif
 unlet! s:wipebuf
 set winheight=1 winwidth=20 shortmess=filnxtToOc
+set winminheight=1 winminwidth=1
 let s:sx = expand("<sfile>:p:r")."x.vim"
 if file_readable(s:sx)
   exe "source " . fnameescape(s:sx)
diff --git a/src/imgui_impl.js b/src/imgui_impl.js
new file mode 100644
index 0000000..416e4b2
--- /dev/null
+++ b/src/imgui_impl.js
@@ -0,0 +1,736 @@
+System.register(["imgui-js", "pixi.js", "./utils"], function (exports_1, context_1) {
+    "use strict";
+    var ImGui, PIXI, U, clipboard_text, contexts, contextIOs, isFirstWindow, ImGuiImplInternalRenderer, gl, app, ImGuiWindowLayer, ImGuiWindow, canvas, g_ShaderHandle, g_VertHandle, g_FragHandle, g_AttribLocationTex, g_AttribLocationProjMtx, g_AttribLocationPosition, g_AttribLocationUV, g_AttribLocationColor, g_VaoHandle, g_VboHandle, g_ElementsHandle, g_FontTexture, mouse_button_map;
+    var __moduleName = context_1 && context_1.id;
+    function document_on_copy(event) {
+        if (event.clipboardData) {
+            event.clipboardData.setData("text/plain", clipboard_text);
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function document_on_cut(event) {
+        if (event.clipboardData) {
+            event.clipboardData.setData("text/plain", clipboard_text);
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function document_on_paste(event) {
+        if (event.clipboardData) {
+            clipboard_text = event.clipboardData.getData("text/plain");
+        }
+        // console.log(`${event.type}: "${clipboard_text}"`);
+        event.preventDefault();
+    }
+    function window_on_gamepadconnected(event /* GamepadEvent */) {
+        console.log("Gamepad connected at index %d: %s. %d buttons, %d axes.", event.gamepad.index, event.gamepad.id, event.gamepad.buttons.length, event.gamepad.axes.length);
+    }
+    function window_on_gamepaddisconnected(event /* GamepadEvent */) {
+        console.log("Gamepad disconnected at index %d: %s.", event.gamepad.index, event.gamepad.id);
+    }
+    function canvas_on_blur(event) {
+        for (var io of contextIOs) {
+            io.KeyCtrl = false;
+            io.KeyShift = false;
+            io.KeyAlt = false;
+            io.KeySuper = false;
+            for (let i = 0; i < io.KeysDown.length; ++i) {
+                io.KeysDown[i] = false;
+            }
+            for (let i = 0; i < io.MouseDown.length; ++i) {
+                io.MouseDown[i] = false;
+            }
+        }
+    }
+    function canvas_on_keydown(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.KeyCtrl = event.ctrlKey;
+            io.KeyShift = event.shiftKey;
+            io.KeyAlt = event.altKey;
+            io.KeySuper = event.metaKey;
+            ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+            io.KeysDown[event.keyCode] = true;
+            // forward to the keypress event
+            if ( /*io.WantCaptureKeyboard ||*/event.key === "Tab") {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_keyup(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.KeyCtrl = event.ctrlKey;
+            io.KeyShift = event.shiftKey;
+            io.KeyAlt = event.altKey;
+            io.KeySuper = event.metaKey;
+            ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+            io.KeysDown[event.keyCode] = false;
+            if (io.WantCaptureKeyboard) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_keypress(event) {
+        // console.log(event.type, event.key, event.keyCode);
+        for (var io of contextIOs) {
+            io.AddInputCharacter(event.charCode);
+            if (io.WantCaptureKeyboard) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_contextmenu(event) {
+        for (var io of contextIOs) {
+            if (io.WantCaptureMouse) {
+                event.preventDefault();
+            }
+        }
+    }
+    function canvas_on_wheel(event) {
+        for (var io of contextIOs) {
+            let scale = 1.0;
+            switch (event.deltaMode) {
+                case event.DOM_DELTA_PIXEL:
+                    scale = 0.01;
+                    break;
+                case event.DOM_DELTA_LINE:
+                    scale = 0.2;
+                    break;
+                case event.DOM_DELTA_PAGE:
+                    scale = 1.0;
+                    break;
+            }
+            io.MouseWheelH = event.deltaX * scale;
+            io.MouseWheel = -event.deltaY * scale; // Mouse wheel: 1 unit scrolls about 5 lines text.
+            if (io.WantCaptureMouse) {
+                event.preventDefault();
+            }
+        }
+    }
+    function PrePIXIInit() {
+        PIXI.Renderer.registerPlugin("imgui_renderer", U.fromConstructor(ImGuiImplInternalRenderer));
+    }
+    exports_1("PrePIXIInit", PrePIXIInit);
+    function Init(_app) {
+        // Setup Dear ImGui binding
+        ImGui.IMGUI_CHECKVERSION();
+        if (typeof (document) !== "undefined") {
+            document.body.addEventListener("copy", document_on_copy);
+            document.body.addEventListener("cut", document_on_cut);
+            document.body.addEventListener("paste", document_on_paste);
+        }
+        if (typeof (window) !== "undefined") {
+            window.addEventListener("gamepadconnected", window_on_gamepadconnected);
+            window.addEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+        }
+        app = _app;
+        gl = app.renderer.gl;
+        canvas = app.view;
+        gl.getExtension("EXT_color_buffer_float");
+        if (canvas !== null) {
+            canvas.style.touchAction = "none"; // Disable browser handling of all panning and zooming gestures.
+            canvas.addEventListener("blur", canvas_on_blur);
+            canvas.addEventListener("keydown", canvas_on_keydown);
+            canvas.addEventListener("keyup", canvas_on_keyup);
+            canvas.addEventListener("keypress", canvas_on_keypress);
+            canvas.addEventListener("contextmenu", canvas_on_contextmenu);
+            canvas.addEventListener("wheel", canvas_on_wheel);
+        }
+        CreateDeviceObjects();
+    }
+    exports_1("Init", Init);
+    function Shutdown() {
+        DestroyDeviceObjects();
+        if (canvas !== null) {
+            canvas.removeEventListener("blur", canvas_on_blur);
+            canvas.removeEventListener("keydown", canvas_on_keydown);
+            canvas.removeEventListener("keyup", canvas_on_keyup);
+            canvas.removeEventListener("keypress", canvas_on_keypress);
+            canvas.removeEventListener("contextmenu", canvas_on_contextmenu);
+            canvas.removeEventListener("wheel", canvas_on_wheel);
+        }
+        app = null;
+        canvas = null;
+        if (typeof (window) !== "undefined") {
+            window.removeEventListener("gamepadconnected", window_on_gamepadconnected);
+            window.removeEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+        }
+        if (typeof (document) !== "undefined") {
+            document.body.removeEventListener("copy", document_on_copy);
+            document.body.removeEventListener("cut", document_on_cut);
+            document.body.removeEventListener("paste", document_on_paste);
+        }
+    }
+    exports_1("Shutdown", Shutdown);
+    function CreateFontsTexture() {
+        const io = ImGui.GetIO();
+        // Backup GL state
+        const last_texture = gl && gl.getParameter(gl.TEXTURE_BINDING_2D);
+        // Build texture atlas
+        // const width: number = 256;
+        // const height: number = 256;
+        // const pixels: Uint8Array = new Uint8Array(4 * width * height).fill(0xff);
+        const { width, height, pixels } = io.Fonts.GetTexDataAsRGBA32(); // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+        // console.log(`font texture ${width} x ${height} @ ${pixels.length}`);
+        // Upload texture to graphics system
+        g_FontTexture = gl && gl.createTexture();
+        gl && gl.bindTexture(gl.TEXTURE_2D, g_FontTexture);
+        gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+        gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+        // gl && gl.pixelStorei(gl.UNPACK_ROW_LENGTH); // WebGL2
+        gl && gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+        // Store our identifier
+        io.Fonts.TexID = g_FontTexture || { foo: "bar" };
+        // console.log("font texture id", g_FontTexture);
+        // Restore modified GL state
+        gl && last_texture && gl.bindTexture(gl.TEXTURE_2D, last_texture);
+    }
+    function DestroyFontsTexture() {
+        const io = ImGui.GetIO();
+        io.Fonts.TexID = null;
+        gl && gl.deleteTexture(g_FontTexture);
+        g_FontTexture = null;
+    }
+    function CreateDeviceObjects() {
+        const vertex_shader = [
+            "#version 300 es",
+            "uniform mat4 ProjMtx;",
+            "in vec2 Position;",
+            "in vec2 UV;",
+            "in vec4 Color;",
+            "out vec2 Frag_UV;",
+            "out vec4 Frag_Color;",
+            "void main() {",
+            "	Frag_UV = UV;",
+            "	Frag_Color = Color;",
+            "	gl_Position = ProjMtx * vec4(Position.xy,0,1);",
+            "}",
+        ];
+        const fragment_shader = [
+            "#version 300 es",
+            "precision mediump float;",
+            "uniform sampler2D Texture;",
+            "in vec2 Frag_UV;",
+            "in vec4 Frag_Color;",
+            "out vec4 OutColor;",
+            "void main() {",
+            "	OutColor = Frag_Color * texture(Texture, Frag_UV);",
+            "}",
+        ];
+        g_ShaderHandle = gl && gl.createProgram();
+        g_VertHandle = gl && gl.createShader(gl.VERTEX_SHADER);
+        g_FragHandle = gl && gl.createShader(gl.FRAGMENT_SHADER);
+        gl && gl.shaderSource(g_VertHandle, vertex_shader.join("\n"));
+        gl && gl.shaderSource(g_FragHandle, fragment_shader.join("\n"));
+        gl && gl.compileShader(g_VertHandle);
+        gl && gl.compileShader(g_FragHandle);
+        gl && gl.attachShader(g_ShaderHandle, g_VertHandle);
+        gl && gl.attachShader(g_ShaderHandle, g_FragHandle);
+        gl && gl.linkProgram(g_ShaderHandle);
+        g_AttribLocationTex = gl && gl.getUniformLocation(g_ShaderHandle, "Texture");
+        g_AttribLocationProjMtx = gl && gl.getUniformLocation(g_ShaderHandle, "ProjMtx");
+        g_AttribLocationPosition = gl && gl.getAttribLocation(g_ShaderHandle, "Position") || 0;
+        g_AttribLocationUV = gl && gl.getAttribLocation(g_ShaderHandle, "UV") || 0;
+        g_AttribLocationColor = gl && gl.getAttribLocation(g_ShaderHandle, "Color") || 0;
+        g_VaoHandle = gl && gl.createVertexArray();
+        g_VboHandle = gl && gl.createBuffer();
+        g_ElementsHandle = gl && gl.createBuffer();
+    }
+    function DestroyDeviceObjects() {
+        DestroyFontsTexture();
+        gl && gl.deleteVertexArray(g_VaoHandle);
+        g_VaoHandle = null;
+        gl && gl.deleteBuffer(g_VboHandle);
+        g_VboHandle = null;
+        gl && gl.deleteBuffer(g_ElementsHandle);
+        g_ElementsHandle = null;
+        g_AttribLocationTex = null;
+        g_AttribLocationProjMtx = null;
+        g_AttribLocationPosition = -1;
+        g_AttribLocationUV = -1;
+        g_AttribLocationColor = -1;
+        gl && gl.deleteProgram(g_ShaderHandle);
+        g_ShaderHandle = null;
+        gl && gl.deleteShader(g_VertHandle);
+        g_VertHandle = null;
+        gl && gl.deleteShader(g_FragHandle);
+        g_FragHandle = null;
+    }
+    return {
+        setters: [
+            function (ImGui_1) {
+                ImGui = ImGui_1;
+            },
+            function (PIXI_1) {
+                PIXI = PIXI_1;
+            },
+            function (U_1) {
+                U = U_1;
+            }
+        ],
+        execute: function () {
+            clipboard_text = "";
+            contexts = [];
+            contextIOs = [];
+            isFirstWindow = true;
+            ImGuiImplInternalRenderer = class ImGuiImplInternalRenderer extends PIXI.ObjectRenderer {
+                constructor(r) {
+                    super(r);
+                }
+                render(owner) {
+                    if (!(owner instanceof ImGuiWindowLayer))
+                        return;
+                    const window = owner.window;
+                    const io = window.io;
+                    const draw_data = ImGui.GetDrawData();
+                    if (draw_data === null) {
+                        throw new Error();
+                    }
+                    gl || console.log(draw_data);
+                    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+                    const fb_width = io.DisplaySize.x * io.DisplayFramebufferScale.x;
+                    const fb_height = io.DisplaySize.y * io.DisplayFramebufferScale.y;
+                    if (fb_width === 0 || fb_height === 0) {
+                        return;
+                    }
+                    draw_data.ScaleClipRects(io.DisplayFramebufferScale);
+                    // Backup GL state
+                    const last_program = gl && gl.getParameter(gl.CURRENT_PROGRAM) || null;
+                    const last_active_texture = gl && gl.getParameter(gl.ACTIVE_TEXTURE) || null;
+                    gl && gl.activeTexture(gl.TEXTURE0);
+                    const last_texture0 = gl && gl.getParameter(gl.TEXTURE_BINDING_2D) || null;
+                    const last_vertex_array = gl && gl.getParameter(gl.VERTEX_ARRAY_BINDING) || null;
+                    const last_array_buffer = gl && gl.getParameter(gl.ARRAY_BUFFER_BINDING) || null;
+                    const last_element_array_buffer = gl && gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING) || null;
+                    // GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+                    const last_viewport = gl && gl.getParameter(gl.VIEWPORT) || null;
+                    const last_scissor_box = gl && gl.getParameter(gl.SCISSOR_BOX) || null;
+                    const last_blend_src_rgb = gl && gl.getParameter(gl.BLEND_SRC_RGB) || null;
+                    const last_blend_dst_rgb = gl && gl.getParameter(gl.BLEND_DST_RGB) || null;
+                    const last_blend_src_alpha = gl && gl.getParameter(gl.BLEND_SRC_ALPHA) || null;
+                    const last_blend_dst_alpha = gl && gl.getParameter(gl.BLEND_DST_ALPHA) || null;
+                    const last_blend_equation_rgb = gl && gl.getParameter(gl.BLEND_EQUATION_RGB) || null;
+                    const last_blend_equation_alpha = gl && gl.getParameter(gl.BLEND_EQUATION_ALPHA) || null;
+                    const last_enable_blend = gl && gl.getParameter(gl.BLEND) || null;
+                    const last_enable_cull_face = gl && gl.getParameter(gl.CULL_FACE) || null;
+                    const last_enable_depth_test = gl && gl.getParameter(gl.DEPTH_TEST) || null;
+                    const last_enable_scissor_test = gl && gl.getParameter(gl.SCISSOR_TEST) || null;
+                    gl.clearColor(0, 0, 0, 0);
+                    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+                    gl && gl.bindVertexArray(g_VaoHandle);
+                    // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
+                    gl && gl.enable(gl.BLEND);
+                    gl && gl.blendEquation(gl.FUNC_ADD);
+                    gl && gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE);
+                    gl && gl.disable(gl.CULL_FACE);
+                    gl && gl.disable(gl.DEPTH_TEST);
+                    gl && gl.enable(gl.SCISSOR_TEST);
+                    // glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+                    // Setup viewport, orthographic projection matrix
+                    // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+                    gl && gl.viewport(0, 0, fb_width, fb_height);
+                    const L = draw_data.DisplayPos.x;
+                    const R = draw_data.DisplayPos.x + draw_data.DisplaySize.x;
+                    const T = draw_data.DisplayPos.y;
+                    const B = draw_data.DisplayPos.y + draw_data.DisplaySize.y;
+                    // we actually flip the bottom and top here to match with PIXI's texture usage
+                    const ortho_projection = new Float32Array([
+                        2.0 / (R - L), 0.0, 0.0, 0.0,
+                        0.0, 2.0 / (B - T), 0.0, 0.0,
+                        0.0, 0.0, -1.0, 0.0,
+                        (R + L) / (L - R), (B + T) / (T - B), 0.0, 1.0,
+                    ]);
+                    gl && gl.useProgram(g_ShaderHandle);
+                    gl && gl.uniform1i(g_AttribLocationTex, 0);
+                    gl && g_AttribLocationProjMtx && gl.uniformMatrix4fv(g_AttribLocationProjMtx, false, ortho_projection);
+                    // Render command lists
+                    gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationPosition);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationUV);
+                    gl && gl.enableVertexAttribArray(g_AttribLocationColor);
+                    gl && gl.vertexAttribPointer(g_AttribLocationPosition, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertPosOffset);
+                    gl && gl.vertexAttribPointer(g_AttribLocationUV, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertUVOffset);
+                    gl && gl.vertexAttribPointer(g_AttribLocationColor, 4, gl.UNSIGNED_BYTE, true, ImGui.ImDrawVertSize, ImGui.ImDrawVertColOffset);
+                    // Draw
+                    const pos = draw_data.DisplayPos;
+                    const idx_buffer_type = gl && ((ImGui.ImDrawIdxSize === 4) ? gl.UNSIGNED_INT : gl.UNSIGNED_SHORT) || 0;
+                    draw_data.IterateDrawLists((draw_list) => {
+                        gl || console.log(draw_list);
+                        gl || console.log("VtxBuffer.length", draw_list.VtxBuffer.length);
+                        gl || console.log("IdxBuffer.length", draw_list.IdxBuffer.length);
+                        let idx_buffer_offset = 0;
+                        gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+                        gl && gl.bufferData(gl.ARRAY_BUFFER, draw_list.VtxBuffer, gl.STREAM_DRAW);
+                        gl && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+                        gl && gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, draw_list.IdxBuffer, gl.STREAM_DRAW);
+                        draw_list.IterateDrawCmds((draw_cmd) => {
+                            gl || console.log(draw_cmd);
+                            gl || console.log("ElemCount", draw_cmd.ElemCount);
+                            gl || console.log("ClipRect", draw_cmd.ClipRect.x, draw_cmd.ClipRect.y, draw_cmd.ClipRect.z - draw_cmd.ClipRect.x, draw_cmd.ClipRect.w - draw_cmd.ClipRect.y);
+                            gl || console.log("TextureId", draw_cmd.TextureId);
+                            if (!gl) {
+                                console.log("i: pos.x pos.y uv.x uv.y col");
+                                for (let i = 0; i < Math.min(3, draw_cmd.ElemCount); ++i) {
+                                    const view = new ImGui.ImDrawVert(draw_list.VtxBuffer.buffer, draw_list.VtxBuffer.byteOffset + i * ImGui.ImDrawVertSize);
+                                    console.log(`${i}: ${view.pos[0].toFixed(2)} ${view.pos[1].toFixed(2)} ${view.uv[0].toFixed(5)} ${view.uv[1].toFixed(5)} ${("00000000" + view.col[0].toString(16)).substr(-8)}`);
+                                }
+                            }
+                            if (draw_cmd.UserCallback !== null) {
+                                // User callback (registered via ImDrawList::AddCallback)
+                                draw_cmd.UserCallback(draw_list, draw_cmd);
+                            }
+                            else {
+                                const clip_rect = new ImGui.ImVec4(draw_cmd.ClipRect.x - pos.x, draw_cmd.ClipRect.y - pos.y, draw_cmd.ClipRect.z - pos.x, draw_cmd.ClipRect.w - pos.y);
+                                if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0 && clip_rect.w >= 0.0) {
+                                    // Apply scissor/clipping rectangle
+                                    gl && gl.scissor(clip_rect.x, clip_rect.y, clip_rect.z - clip_rect.x, clip_rect.w - clip_rect.y);
+                                    // Bind texture, Draw
+                                    gl && gl.bindTexture(gl.TEXTURE_2D, draw_cmd.TextureId);
+                                    gl && gl.drawElements(gl.TRIANGLES, draw_cmd.ElemCount, idx_buffer_type, idx_buffer_offset);
+                                }
+                            }
+                            idx_buffer_offset += draw_cmd.ElemCount * ImGui.ImDrawIdxSize;
+                        });
+                    });
+                    // Restore modified GL state
+                    gl && (last_program !== null) && gl.useProgram(last_program);
+                    gl && (last_texture0 !== null) && gl.bindTexture(gl.TEXTURE_2D, last_texture0);
+                    gl && (last_active_texture !== null) && gl.activeTexture(last_active_texture);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationPosition);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationUV);
+                    gl && gl.disableVertexAttribArray(g_AttribLocationColor);
+                    gl && (last_vertex_array !== null) && gl.bindVertexArray(last_vertex_array);
+                    gl && (last_array_buffer !== null) && gl.bindBuffer(gl.ARRAY_BUFFER, last_array_buffer);
+                    gl && (last_element_array_buffer !== null) && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+                    gl && (last_viewport !== null) && gl.viewport(last_viewport[0], last_viewport[1], last_viewport[2], last_viewport[3]);
+                    gl && (last_scissor_box !== null) && gl.scissor(last_scissor_box[0], last_scissor_box[1], last_scissor_box[2], last_scissor_box[3]);
+                    gl && (last_blend_equation_rgb !== null && last_blend_equation_alpha !== null) && gl.blendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+                    gl && (last_blend_src_rgb !== null && last_blend_src_alpha !== null && last_blend_dst_rgb !== null && last_blend_dst_alpha !== null) && gl.blendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
+                    gl && (last_enable_blend ? gl.enable(gl.BLEND) : gl.disable(gl.BLEND));
+                    gl && (last_enable_cull_face ? gl.enable(gl.CULL_FACE) : gl.disable(gl.CULL_FACE));
+                    gl && (last_enable_depth_test ? gl.enable(gl.DEPTH_TEST) : gl.disable(gl.DEPTH_TEST));
+                    gl && (last_enable_scissor_test ? gl.enable(gl.SCISSOR_TEST) : gl.disable(gl.SCISSOR_TEST));
+                    // glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
+                }
+            };
+            gl = null;
+            app = null;
+            ImGuiWindowLayer = class ImGuiWindowLayer extends PIXI.Sprite {
+                constructor(window, tex) {
+                    super();
+                    this.pluginName = "imgui_renderer";
+                    this.window = window;
+                }
+            };
+            ImGuiWindow = class ImGuiWindow extends PIXI.Container {
+                constructor(sizeX, sizeY, update) {
+                    super();
+                    this.baseTex = new PIXI.BaseRenderTexture({ scaleMode: PIXI.SCALE_MODES.LINEAR, resolution: 1, type: PIXI.TYPES.FLOAT, format: PIXI.FORMATS.RGBA });
+                    this.tex = new PIXI.RenderTexture(this.baseTex);
+                    this.surface = new PIXI.Sprite(this.tex);
+                    this.imgui = new ImGuiWindowLayer(this, this.tex);
+                    this.ctx = ImGui.CreateContext(contextIOs.length == 0 ? null : contextIOs[0].Fonts);
+                    ImGui.SetCurrentContext(this.ctx);
+                    this.io = ImGui.GetIO();
+                    contexts.push(this.ctx);
+                    contextIOs.push(this.io);
+                    if (contexts.length == 1) {
+                        CreateFontsTexture();
+                    }
+                    if (typeof (window) !== "undefined") {
+                        ImGui.LoadIniSettingsFromMemory(window.localStorage.getItem("imgui.ini") || "");
+                    }
+                    if (typeof (navigator) !== "undefined") {
+                        this.io.ConfigMacOSXBehaviors = navigator.platform.match(/Mac/) !== null;
+                    }
+                    this.io.SetClipboardTextFn = (user_data, text) => {
+                        clipboard_text = text;
+                        // console.log(`set clipboard_text: "${clipboard_text}"`);
+                        if (typeof navigator !== "undefined" && typeof navigator.clipboard !== "undefined") {
+                            // console.log(`clipboard.writeText: "${clipboard_text}"`);
+                            navigator.clipboard.writeText(clipboard_text).then(() => {
+                                // console.log(`clipboard.writeText: "${clipboard_text}" done.`);
+                            });
+                        }
+                    };
+                    this.io.GetClipboardTextFn = (user_data) => {
+                        // if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+                        //     console.log(`clipboard.readText: "${clipboard_text}"`);
+                        //     (navigator as any).clipboard.readText().then((text: string): void => {
+                        //         clipboard_text = text;
+                        //         console.log(`clipboard.readText: "${clipboard_text}" done.`);
+                        //     });
+                        // }
+                        // console.log(`get clipboard_text: "${clipboard_text}"`);
+                        return clipboard_text;
+                    };
+                    this.io.ClipboardUserData = null;
+                    // Setup back-end capabilities flags
+                    this.io.BackendFlags |= ImGui.BackendFlags.HasMouseCursors; // We can honor GetMouseCursor() values (optional)
+                    // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+                    this.io.KeyMap[ImGui.Key.Tab] = 9;
+                    this.io.KeyMap[ImGui.Key.LeftArrow] = 37;
+                    this.io.KeyMap[ImGui.Key.RightArrow] = 39;
+                    this.io.KeyMap[ImGui.Key.UpArrow] = 38;
+                    this.io.KeyMap[ImGui.Key.DownArrow] = 40;
+                    this.io.KeyMap[ImGui.Key.PageUp] = 33;
+                    this.io.KeyMap[ImGui.Key.PageDown] = 34;
+                    this.io.KeyMap[ImGui.Key.Home] = 36;
+                    this.io.KeyMap[ImGui.Key.End] = 35;
+                    this.io.KeyMap[ImGui.Key.Insert] = 45;
+                    this.io.KeyMap[ImGui.Key.Delete] = 46;
+                    this.io.KeyMap[ImGui.Key.Backspace] = 8;
+                    this.io.KeyMap[ImGui.Key.Space] = 32;
+                    this.io.KeyMap[ImGui.Key.Enter] = 13;
+                    this.io.KeyMap[ImGui.Key.Escape] = 27;
+                    this.io.KeyMap[ImGui.Key.A] = 65;
+                    this.io.KeyMap[ImGui.Key.C] = 67;
+                    this.io.KeyMap[ImGui.Key.V] = 86;
+                    this.io.KeyMap[ImGui.Key.X] = 88;
+                    this.io.KeyMap[ImGui.Key.Y] = 89;
+                    this.io.KeyMap[ImGui.Key.Z] = 90;
+                    this.update = update;
+                    this.resize(sizeX, sizeY);
+                    this.imgui.pluginName = 'imgui_renderer';
+                    this.addChild(this.surface);
+                    app.renderer.plugins.interaction.addListener("mousedown", this.mouseDown.bind(this));
+                    app.renderer.plugins.interaction.addListener("mouseup", this.mouseUp.bind(this));
+                    app.ticker.add(this.updateInternal.bind(this));
+                    this.interactive = false;
+                    this.interactiveChildren = true;
+                    this.surface.interactive = false;
+                }
+                getSizeX() { return this.sizeX; }
+                getSizeY() { return this.sizeY; }
+                withContext(cb) {
+                    ImGui.SetCurrentContext(this.ctx);
+                    cb();
+                }
+                mouseDown(e) {
+                    if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface) {
+                        this.io.MouseDown[mouse_button_map[0]] = true;
+                    }
+                }
+                mouseUp(e) {
+                    if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface) {
+                        this.io.MouseDown[mouse_button_map[0]] = false;
+                    }
+                }
+                resize(sizeX, sizeY) {
+                    this.sizeX = sizeX;
+                    this.sizeY = sizeY;
+                    this.baseTex.resize(sizeX, sizeY);
+                    this.tex.frame = new PIXI.Rectangle(0, 0, this.baseTex.width, this.baseTex.height);
+                }
+                updateInternal(deltaTime) {
+                    const dt = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+                    ImGui.SetCurrentContext(this.ctx);
+                    if (this.io.WantSaveIniSettings) {
+                        this.io.WantSaveIniSettings = false;
+                        if (typeof (window) !== "undefined") {
+                            window.localStorage.setItem("imgui.ini", ImGui.SaveIniSettingsToMemory());
+                        }
+                    }
+                    this.io.DisplaySize.x = this.sizeX;
+                    this.io.DisplaySize.y = this.sizeY;
+                    this.io.DisplayFramebufferScale.x = 1;
+                    this.io.DisplayFramebufferScale.y = 1;
+                    this.io.DeltaTime = dt;
+                    let localPos = this.toLocal(app.renderer.plugins.interaction.mouse.global);
+                    if (localPos.x < 0 || localPos.y < 0 || localPos.x >= this.sizeX || localPos.y >= this.sizeY) {
+                        localPos = new PIXI.Point(-Number.MAX_VALUE, -Number.MAX_VALUE);
+                    }
+                    this.io.MousePos.x = localPos.x;
+                    this.io.MousePos.y = localPos.y;
+                    if (this.io.WantSetMousePos) {
+                        console.log("TODO: MousePos", this.io.MousePos.x, this.io.MousePos.y);
+                    }
+                    if (typeof (document) !== "undefined") {
+                        if (this.io.MouseDrawCursor) {
+                            document.body.style.cursor = "none";
+                        }
+                        else {
+                            switch (ImGui.GetMouseCursor()) {
+                                case ImGui.MouseCursor.None:
+                                    document.body.style.cursor = "none";
+                                    break;
+                                default:
+                                case ImGui.MouseCursor.Arrow:
+                                    document.body.style.cursor = "default";
+                                    break;
+                                case ImGui.MouseCursor.TextInput:
+                                    document.body.style.cursor = "text";
+                                    break; // When hovering over InputText, etc.
+                                case ImGui.MouseCursor.ResizeAll:
+                                    document.body.style.cursor = "move";
+                                    break; // Unused
+                                case ImGui.MouseCursor.ResizeNS:
+                                    document.body.style.cursor = "ns-resize";
+                                    break; // When hovering over an horizontal border
+                                case ImGui.MouseCursor.ResizeEW:
+                                    document.body.style.cursor = "ew-resize";
+                                    break; // When hovering over a vertical border or a column
+                                case ImGui.MouseCursor.ResizeNESW:
+                                    document.body.style.cursor = "nesw-resize";
+                                    break; // When hovering over the bottom-left corner of a window
+                                case ImGui.MouseCursor.ResizeNWSE:
+                                    document.body.style.cursor = "nwse-resize";
+                                    break; // When hovering over the bottom-right corner of a window
+                                case ImGui.MouseCursor.Hand:
+                                    document.body.style.cursor = "move";
+                                    break;
+                            }
+                        }
+                    }
+                    // Gamepad navigation mapping [BETA]
+                    for (let i = 0; i < this.io.NavInputs.length; ++i) {
+                        this.io.NavInputs[i] = 0.0;
+                    }
+                    if (this.io.ConfigFlags & ImGui.ConfigFlags.NavEnableGamepad) {
+                        // Update gamepad inputs
+                        const gamepads = (typeof (navigator) !== "undefined" && typeof (navigator.getGamepads) === "function") ? navigator.getGamepads() : [];
+                        for (let i = 0; i < gamepads.length; ++i) {
+                            const gamepad = gamepads[i];
+                            if (!gamepad) {
+                                continue;
+                            }
+                            const buttons_count = gamepad.buttons.length;
+                            const axes_count = gamepad.axes.length;
+                            const MAP_BUTTON = function (NAV_NO, BUTTON_NO) {
+                                if (!gamepad) {
+                                    return;
+                                }
+                                if (buttons_count > BUTTON_NO && gamepad.buttons[BUTTON_NO].pressed)
+                                    this.io.NavInputs[NAV_NO] = 1.0;
+                            };
+                            const MAP_ANALOG = function (NAV_NO, AXIS_NO, V0, V1) {
+                                if (!gamepad) {
+                                    return;
+                                }
+                                let v = (axes_count > AXIS_NO) ? gamepad.axes[AXIS_NO] : V0;
+                                v = (v - V0) / (V1 - V0);
+                                if (v > 1.0)
+                                    v = 1.0;
+                                if (this.io.NavInputs[NAV_NO] < v)
+                                    this.io.NavInputs[NAV_NO] = v;
+                            };
+                            // TODO: map input based on vendor and product id
+                            // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/id
+                            const match = gamepad.id.match(/^([0-9a-f]{4})-([0-9a-f]{4})-.*$/);
+                            const match_chrome = gamepad.id.match(/^.*\(.*Vendor: ([0-9a-f]{4}) Product: ([0-9a-f]{4})\).*$/);
+                            const vendor = (match && match[1]) || (match_chrome && match_chrome[1]) || "0000";
+                            const product = (match && match[2]) || (match_chrome && match_chrome[2]) || "0000";
+                            switch (vendor + product) {
+                                case "046dc216": // Logitech Logitech Dual Action (Vendor: 046d Product: c216)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 1); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 2); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 0); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_ANALOG(ImGui.NavInput.DpadLeft, 4, -0.3, -0.9); // D-Pad Left
+                                    MAP_ANALOG(ImGui.NavInput.DpadRight, 4, +0.3, +0.9); // D-Pad Right
+                                    MAP_ANALOG(ImGui.NavInput.DpadUp, 5, -0.3, -0.9); // D-Pad Up
+                                    MAP_ANALOG(ImGui.NavInput.DpadDown, 5, +0.3, +0.9); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 6); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 7); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                case "046dc21d": // Logitech Gamepad F310 (STANDARD GAMEPAD Vendor: 046d Product: c21d)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 0); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 1); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 2); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_BUTTON(ImGui.NavInput.DpadLeft, 14); // D-Pad Left
+                                    MAP_BUTTON(ImGui.NavInput.DpadRight, 15); // D-Pad Right
+                                    MAP_BUTTON(ImGui.NavInput.DpadUp, 12); // D-Pad Up
+                                    MAP_BUTTON(ImGui.NavInput.DpadDown, 13); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_ANALOG(ImGui.NavInput.TweakSlow, 6, +0.3, +0.9); // L2 / LT
+                                    MAP_ANALOG(ImGui.NavInput.TweakFast, 7, +0.3, +0.9); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                case "2dc86001": // 8Bitdo SN30 Pro  8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6001)
+                                case "2dc86101": // 8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6101)
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 1); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 0); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 4); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_ANALOG(ImGui.NavInput.DpadLeft, 6, -0.3, -0.9); // D-Pad Left
+                                    MAP_ANALOG(ImGui.NavInput.DpadRight, 6, +0.3, +0.9); // D-Pad Right
+                                    MAP_ANALOG(ImGui.NavInput.DpadUp, 7, -0.3, -0.9); // D-Pad Up
+                                    MAP_ANALOG(ImGui.NavInput.DpadDown, 7, +0.3, +0.9); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 6); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 7); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 8); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 9); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                                default: // standard gamepad: https://w3c.github.io/gamepad/#remapping
+                                    MAP_BUTTON(ImGui.NavInput.Activate, 0); // Cross / A
+                                    MAP_BUTTON(ImGui.NavInput.Cancel, 1); // Circle / B
+                                    MAP_BUTTON(ImGui.NavInput.Menu, 2); // Square / X
+                                    MAP_BUTTON(ImGui.NavInput.Input, 3); // Triangle / Y
+                                    MAP_BUTTON(ImGui.NavInput.DpadLeft, 14); // D-Pad Left
+                                    MAP_BUTTON(ImGui.NavInput.DpadRight, 15); // D-Pad Right
+                                    MAP_BUTTON(ImGui.NavInput.DpadUp, 12); // D-Pad Up
+                                    MAP_BUTTON(ImGui.NavInput.DpadDown, 13); // D-Pad Down
+                                    MAP_BUTTON(ImGui.NavInput.FocusPrev, 4); // L1 / LB
+                                    MAP_BUTTON(ImGui.NavInput.FocusNext, 5); // R1 / RB
+                                    MAP_BUTTON(ImGui.NavInput.TweakSlow, 6); // L2 / LT
+                                    MAP_BUTTON(ImGui.NavInput.TweakFast, 7); // R2 / RT
+                                    MAP_ANALOG(ImGui.NavInput.LStickLeft, 0, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickUp, 1, -0.3, -0.9);
+                                    MAP_ANALOG(ImGui.NavInput.LStickDown, 1, +0.3, +0.9);
+                                    break;
+                            }
+                        }
+                    }
+                    ImGui.NewFrame();
+                    this.update(dt);
+                    ImGui.EndFrame();
+                    ImGui.Render();
+                    app.renderer.render(this.imgui, this.tex);
+                    this.surface.interactive = this.io.WantCaptureMouse;
+                }
+            };
+            exports_1("ImGuiWindow", ImGuiWindow);
+            canvas = null;
+            //export let gl: WebGL2RenderingContext | null = null;
+            g_ShaderHandle = null;
+            g_VertHandle = null;
+            g_FragHandle = null;
+            g_AttribLocationTex = null;
+            g_AttribLocationProjMtx = null;
+            g_AttribLocationPosition = -1;
+            g_AttribLocationUV = -1;
+            g_AttribLocationColor = -1;
+            g_VaoHandle = null;
+            g_VboHandle = null;
+            g_ElementsHandle = null;
+            g_FontTexture = null;
+            // MouseEvent.button
+            // A number representing a given button:
+            // 0: Main button pressed, usually the left button or the un-initialized state
+            // 1: Auxiliary button pressed, usually the wheel button or the middle button (if present)
+            // 2: Secondary button pressed, usually the right button
+            // 3: Fourth button, typically the Browser Back button
+            // 4: Fifth button, typically the Browser Forward button
+            mouse_button_map = [0, 2, 1, 3, 4];
+        }
+    };
+});
+//# sourceMappingURL=imgui_impl.js.map
\ No newline at end of file
diff --git a/src/imgui_impl.js.map b/src/imgui_impl.js.map
new file mode 100644
index 0000000..bcb545f
--- /dev/null
+++ b/src/imgui_impl.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/src/imgui_impl.ts b/src/imgui_impl.ts
new file mode 100644
index 0000000..a5dad20
--- /dev/null
+++ b/src/imgui_impl.ts
@@ -0,0 +1,797 @@
+import * as ImGui from "imgui-js";
+import { ImVec2 } from "imgui-js";
+import * as PIXI from "pixi.js";
+import * as U from "./utils";
+
+let clipboard_text: string = "";
+
+const contexts: ImGui.ImGuiContext[] = [];
+const contextIOs: ImGui.ImGuiIO[] = [];
+let isFirstWindow: boolean = true;
+
+class ImGuiImplInternalRenderer extends PIXI.ObjectRenderer
+{
+    constructor(r: PIXI.Renderer)
+    {
+        super(r);
+    }
+    render(owner: PIXI.DisplayObject): void
+    {
+        if (!(owner instanceof ImGuiWindowLayer)) return;
+
+        const window: ImGuiWindow = (owner as ImGuiWindowLayer).window;
+
+        const io: ImGui.ImGuiIO = window.io;
+        const draw_data: ImGui.ImDrawData = ImGui.GetDrawData();
+        if (draw_data === null) { throw new Error(); }
+
+        gl || console.log(draw_data);
+
+        // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+        const fb_width: number = io.DisplaySize.x * io.DisplayFramebufferScale.x;
+        const fb_height: number = io.DisplaySize.y * io.DisplayFramebufferScale.y;
+        if (fb_width === 0 || fb_height === 0) {
+            return;
+        }
+        draw_data.ScaleClipRects(io.DisplayFramebufferScale);
+
+        // Backup GL state
+        const last_program: WebGLProgram | null = gl && gl.getParameter(gl.CURRENT_PROGRAM) || null;
+        const last_active_texture: GLenum | null = gl && gl.getParameter(gl.ACTIVE_TEXTURE) || null;
+        gl && gl.activeTexture(gl.TEXTURE0);
+        const last_texture0: WebGLTexture | null = gl && gl.getParameter(gl.TEXTURE_BINDING_2D) || null;
+        const last_vertex_array: WebGLVertexArrayObject | null = gl && gl.getParameter(gl.VERTEX_ARRAY_BINDING) || null;
+        const last_array_buffer: WebGLBuffer | null = gl && gl.getParameter(gl.ARRAY_BUFFER_BINDING) || null;
+        const last_element_array_buffer: WebGLBuffer | null = gl && gl.getParameter(gl.ELEMENT_ARRAY_BUFFER_BINDING) || null;
+        // GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+        const last_viewport: Int32Array | null = gl && gl.getParameter(gl.VIEWPORT) || null;
+        const last_scissor_box: Int32Array | null = gl && gl.getParameter(gl.SCISSOR_BOX) || null;
+        const last_blend_src_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_SRC_RGB) || null;
+        const last_blend_dst_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_DST_RGB) || null;
+        const last_blend_src_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_SRC_ALPHA) || null;
+        const last_blend_dst_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_DST_ALPHA) || null;
+        const last_blend_equation_rgb: GLenum | null = gl && gl.getParameter(gl.BLEND_EQUATION_RGB) || null;
+        const last_blend_equation_alpha: GLenum | null = gl && gl.getParameter(gl.BLEND_EQUATION_ALPHA) || null;
+        const last_enable_blend: GLboolean | null = gl && gl.getParameter(gl.BLEND) || null;
+        const last_enable_cull_face: GLboolean | null = gl && gl.getParameter(gl.CULL_FACE) || null;
+        const last_enable_depth_test: GLboolean | null = gl && gl.getParameter(gl.DEPTH_TEST) || null;
+        const last_enable_scissor_test: GLboolean | null = gl && gl.getParameter(gl.SCISSOR_TEST) || null;
+
+        gl.clearColor(0, 0, 0, 0);
+        gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+        
+        gl && gl.bindVertexArray(g_VaoHandle);
+
+        // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
+        gl && gl.enable(gl.BLEND);
+        gl && gl.blendEquation(gl.FUNC_ADD);
+        gl && gl.blendFuncSeparate(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE);
+        gl && gl.disable(gl.CULL_FACE);
+        gl && gl.disable(gl.DEPTH_TEST);
+        gl && gl.enable(gl.SCISSOR_TEST);
+        // glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+
+        // Setup viewport, orthographic projection matrix
+        // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+        gl && gl.viewport(0, 0, fb_width, fb_height);
+        const L: number = draw_data.DisplayPos.x;
+        const R: number = draw_data.DisplayPos.x + draw_data.DisplaySize.x;
+        const T: number = draw_data.DisplayPos.y;
+        const B: number = draw_data.DisplayPos.y + draw_data.DisplaySize.y;
+        // we actually flip the bottom and top here to match with PIXI's texture usage
+        const ortho_projection: Float32Array = new Float32Array([
+            2.0 / (R - L),     0.0,                0.0, 0.0,
+            0.0,               2.0 / (B - T),      0.0, 0.0,
+            0.0,               0.0,               -1.0, 0.0,
+            (R + L) / (L - R), (B + T) / (T - B),  0.0, 1.0,
+        ]);
+        gl && gl.useProgram(g_ShaderHandle);
+        gl && gl.uniform1i(g_AttribLocationTex, 0);
+        gl && g_AttribLocationProjMtx && gl.uniformMatrix4fv(g_AttribLocationProjMtx, false, ortho_projection);
+
+        // Render command lists
+        gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+        gl && gl.enableVertexAttribArray(g_AttribLocationPosition);
+        gl && gl.enableVertexAttribArray(g_AttribLocationUV);
+        gl && gl.enableVertexAttribArray(g_AttribLocationColor);
+
+        gl && gl.vertexAttribPointer(g_AttribLocationPosition, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertPosOffset);
+        gl && gl.vertexAttribPointer(g_AttribLocationUV, 2, gl.FLOAT, false, ImGui.ImDrawVertSize, ImGui.ImDrawVertUVOffset);
+        gl && gl.vertexAttribPointer(g_AttribLocationColor, 4, gl.UNSIGNED_BYTE, true, ImGui.ImDrawVertSize, ImGui.ImDrawVertColOffset);
+
+        // Draw
+        const pos = draw_data.DisplayPos;
+        const idx_buffer_type: GLenum = gl && ((ImGui.ImDrawIdxSize === 4) ? gl.UNSIGNED_INT : gl.UNSIGNED_SHORT) || 0;
+        draw_data.IterateDrawLists((draw_list: ImGui.ImDrawList): void => {
+            gl || console.log(draw_list);
+            gl || console.log("VtxBuffer.length", draw_list.VtxBuffer.length);
+            gl || console.log("IdxBuffer.length", draw_list.IdxBuffer.length);
+            
+            let idx_buffer_offset: number = 0;
+
+            gl && gl.bindBuffer(gl.ARRAY_BUFFER, g_VboHandle);
+            gl && gl.bufferData(gl.ARRAY_BUFFER, draw_list.VtxBuffer, gl.STREAM_DRAW);
+            gl && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+            gl && gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, draw_list.IdxBuffer, gl.STREAM_DRAW);
+
+            draw_list.IterateDrawCmds((draw_cmd: ImGui.ImDrawCmd): void => {
+                gl || console.log(draw_cmd);
+                gl || console.log("ElemCount", draw_cmd.ElemCount);
+                gl || console.log("ClipRect", draw_cmd.ClipRect.x, draw_cmd.ClipRect.y, draw_cmd.ClipRect.z - draw_cmd.ClipRect.x, draw_cmd.ClipRect.w - draw_cmd.ClipRect.y);
+                gl || console.log("TextureId", draw_cmd.TextureId);
+                if (!gl) {
+                    console.log("i: pos.x pos.y uv.x uv.y col");
+                    for (let i = 0; i < Math.min(3, draw_cmd.ElemCount); ++i) {
+                        const view: ImGui.ImDrawVert = new ImGui.ImDrawVert(draw_list.VtxBuffer.buffer, draw_list.VtxBuffer.byteOffset + i * ImGui.ImDrawVertSize);
+                        console.log(`${i}: ${view.pos[0].toFixed(2)} ${view.pos[1].toFixed(2)} ${view.uv[0].toFixed(5)} ${view.uv[1].toFixed(5)} ${("00000000" + view.col[0].toString(16)).substr(-8)}`);
+                    }
+                }
+
+                if (draw_cmd.UserCallback !== null) {
+                    // User callback (registered via ImDrawList::AddCallback)
+                    draw_cmd.UserCallback(draw_list, draw_cmd);
+                } else {
+                    const clip_rect = new ImGui.ImVec4(draw_cmd.ClipRect.x - pos.x, draw_cmd.ClipRect.y - pos.y, draw_cmd.ClipRect.z - pos.x, draw_cmd.ClipRect.w - pos.y);
+                    if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0 && clip_rect.w >= 0.0) {
+                        // Apply scissor/clipping rectangle
+                        gl && gl.scissor(clip_rect.x, clip_rect.y, clip_rect.z - clip_rect.x, clip_rect.w - clip_rect.y);
+
+                        // Bind texture, Draw
+                        gl && gl.bindTexture(gl.TEXTURE_2D, draw_cmd.TextureId);
+                        gl && gl.drawElements(gl.TRIANGLES, draw_cmd.ElemCount, idx_buffer_type, idx_buffer_offset);
+                    }
+                }
+
+                idx_buffer_offset += draw_cmd.ElemCount * ImGui.ImDrawIdxSize;
+            });
+        });
+
+        // Restore modified GL state
+        
+        gl && (last_program !== null) && gl.useProgram(last_program);
+        gl && (last_texture0 !== null) && gl.bindTexture(gl.TEXTURE_2D, last_texture0);
+        gl && (last_active_texture !== null) && gl.activeTexture(last_active_texture);
+        gl && gl.disableVertexAttribArray(g_AttribLocationPosition);
+        gl && gl.disableVertexAttribArray(g_AttribLocationUV);
+        gl && gl.disableVertexAttribArray(g_AttribLocationColor);
+        gl && (last_vertex_array !== null) && gl.bindVertexArray(last_vertex_array);
+        gl && (last_array_buffer !== null) && gl.bindBuffer(gl.ARRAY_BUFFER, last_array_buffer);
+        gl && (last_element_array_buffer !== null) && gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+        gl && (last_viewport !== null) && gl.viewport(last_viewport[0], last_viewport[1], last_viewport[2], last_viewport[3]);
+        gl && (last_scissor_box !== null) && gl.scissor(last_scissor_box[0], last_scissor_box[1], last_scissor_box[2], last_scissor_box[3]);
+        gl && (last_blend_equation_rgb !== null && last_blend_equation_alpha !== null) && gl.blendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+        gl && (last_blend_src_rgb !== null && last_blend_src_alpha !== null && last_blend_dst_rgb !== null && last_blend_dst_alpha !== null) && gl.blendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
+        gl && (last_enable_blend ? gl.enable(gl.BLEND) : gl.disable(gl.BLEND));
+        gl && (last_enable_cull_face ? gl.enable(gl.CULL_FACE) : gl.disable(gl.CULL_FACE));
+        gl && (last_enable_depth_test ? gl.enable(gl.DEPTH_TEST) : gl.disable(gl.DEPTH_TEST));
+        gl && (last_enable_scissor_test ? gl.enable(gl.SCISSOR_TEST) : gl.disable(gl.SCISSOR_TEST));
+        // glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
+    }
+}
+
+let gl: WebGL2RenderingContext = null;
+let app: PIXI.Application = null;
+
+class ImGuiWindowLayer extends PIXI.Sprite
+{
+    public readonly window: ImGuiWindow;
+    constructor(window: ImGuiWindow, tex:PIXI.RenderTexture)
+    {
+        super();
+        this.pluginName = "imgui_renderer";
+        this.window = window;
+    }
+}
+
+export class ImGuiWindow extends PIXI.Container
+{
+    public readonly ctx: ImGui.ImGuiContext;
+    public readonly io: ImGui.ImGuiIO;
+    private sizeX: number;
+    private sizeY: number;
+    public getSizeX(): number { return this.sizeX; }
+    public getSizeY(): number { return this.sizeY; }
+
+    private baseTex: PIXI.BaseRenderTexture = new PIXI.BaseRenderTexture({scaleMode: PIXI.SCALE_MODES.LINEAR, resolution: 1, type: PIXI.TYPES.FLOAT, format: PIXI.FORMATS.RGBA});
+    private tex: PIXI.RenderTexture = new PIXI.RenderTexture(this.baseTex);
+    
+    private surface: PIXI.Sprite = new PIXI.Sprite(this.tex);
+    private imgui: ImGuiWindowLayer = new ImGuiWindowLayer(this, this.tex);
+    
+    private update: (dt: number) => void;
+    constructor(sizeX: number, sizeY: number, update: (dt: number) => void)
+    {
+        super();
+
+        this.ctx = ImGui.CreateContext(contextIOs.length == 0 ? null : contextIOs[0].Fonts);
+        ImGui.SetCurrentContext(this.ctx);
+        this.io = ImGui.GetIO();
+
+        contexts.push(this.ctx);
+        contextIOs.push(this.io);
+
+        if (contexts.length == 1)
+        {
+            CreateFontsTexture();
+        }
+
+        if (typeof(window) !== "undefined") {
+            ImGui.LoadIniSettingsFromMemory(window.localStorage.getItem("imgui.ini") || "");
+        }
+
+        if (typeof(navigator) !== "undefined") {
+            this.io.ConfigMacOSXBehaviors = navigator.platform.match(/Mac/) !== null;
+        }
+
+        this.io.SetClipboardTextFn = (user_data: any, text: string): void => {
+            clipboard_text = text;
+            // console.log(`set clipboard_text: "${clipboard_text}"`);
+            if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+                // console.log(`clipboard.writeText: "${clipboard_text}"`);
+                (navigator as any).clipboard.writeText(clipboard_text).then((): void => {
+                    // console.log(`clipboard.writeText: "${clipboard_text}" done.`);
+                });
+            }
+        };
+        this.io.GetClipboardTextFn = (user_data: any): string => {
+            // if (typeof navigator !== "undefined" && typeof (navigator as any).clipboard !== "undefined") {
+            //     console.log(`clipboard.readText: "${clipboard_text}"`);
+            //     (navigator as any).clipboard.readText().then((text: string): void => {
+            //         clipboard_text = text;
+            //         console.log(`clipboard.readText: "${clipboard_text}" done.`);
+            //     });
+            // }
+            // console.log(`get clipboard_text: "${clipboard_text}"`);
+            return clipboard_text;
+        };
+        this.io.ClipboardUserData = null;
+
+        // Setup back-end capabilities flags
+        this.io.BackendFlags |= ImGui.BackendFlags.HasMouseCursors;   // We can honor GetMouseCursor() values (optional)
+
+        // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+        this.io.KeyMap[ImGui.Key.Tab] = 9;
+        this.io.KeyMap[ImGui.Key.LeftArrow] = 37;
+        this.io.KeyMap[ImGui.Key.RightArrow] = 39;
+        this.io.KeyMap[ImGui.Key.UpArrow] = 38;
+        this.io.KeyMap[ImGui.Key.DownArrow] = 40;
+        this.io.KeyMap[ImGui.Key.PageUp] = 33;
+        this.io.KeyMap[ImGui.Key.PageDown] = 34;
+        this.io.KeyMap[ImGui.Key.Home] = 36;
+        this.io.KeyMap[ImGui.Key.End] = 35;
+        this.io.KeyMap[ImGui.Key.Insert] = 45;
+        this.io.KeyMap[ImGui.Key.Delete] = 46;
+        this.io.KeyMap[ImGui.Key.Backspace] = 8;
+        this.io.KeyMap[ImGui.Key.Space] = 32;
+        this.io.KeyMap[ImGui.Key.Enter] = 13;
+        this.io.KeyMap[ImGui.Key.Escape] = 27;
+        this.io.KeyMap[ImGui.Key.A] = 65;
+        this.io.KeyMap[ImGui.Key.C] = 67;
+        this.io.KeyMap[ImGui.Key.V] = 86;
+        this.io.KeyMap[ImGui.Key.X] = 88;
+        this.io.KeyMap[ImGui.Key.Y] = 89;
+        this.io.KeyMap[ImGui.Key.Z] = 90;
+
+        this.update = update;
+        this.resize(sizeX, sizeY);
+        this.imgui.pluginName = 'imgui_renderer';
+        this.addChild(this.surface);
+        app.renderer.plugins.interaction.addListener("mousedown", this.mouseDown.bind(this));
+        app.renderer.plugins.interaction.addListener("mouseup", this.mouseUp.bind(this));
+        app.ticker.add(this.updateInternal.bind(this));
+
+        this.interactive = false;
+        this.interactiveChildren = true;
+
+        this.surface.interactive = false;
+    }
+    withContext(cb: () => void)
+    {
+        ImGui.SetCurrentContext(this.ctx);
+        cb();
+    }
+    mouseDown(e: PIXI.interaction.InteractionEvent): void
+    {
+        if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface)
+        {
+            this.io.MouseDown[mouse_button_map[0]] = true;
+        }
+    }
+    mouseUp(e: PIXI.interaction.InteractionEvent): void
+    {
+        if (!this.io.WantCaptureMouse || app.renderer.plugins.interaction.hitTest(app.renderer.plugins.interaction.mouse.global) == this.surface)
+        {
+            this.io.MouseDown[mouse_button_map[0]] = false;
+        }
+    }
+    resize(sizeX: number, sizeY: number)
+    {
+        this.sizeX = sizeX;
+        this.sizeY = sizeY;
+        this.baseTex.resize(sizeX, sizeY);
+        this.tex.frame = new PIXI.Rectangle(0, 0, this.baseTex.width, this.baseTex.height);
+    }
+    updateInternal(deltaTime: number)
+    {
+        const dt: number = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+
+        ImGui.SetCurrentContext(this.ctx);
+
+        if (this.io.WantSaveIniSettings) {
+            this.io.WantSaveIniSettings = false;
+            if (typeof(window) !== "undefined") {
+                window.localStorage.setItem("imgui.ini", ImGui.SaveIniSettingsToMemory());
+            }
+        }
+
+        this.io.DisplaySize.x = this.sizeX;
+        this.io.DisplaySize.y = this.sizeY;
+        this.io.DisplayFramebufferScale.x = 1;
+        this.io.DisplayFramebufferScale.y = 1;
+
+        this.io.DeltaTime = dt;
+
+        let localPos: PIXI.Point = this.toLocal(app.renderer.plugins.interaction.mouse.global);
+        if (localPos.x < 0 || localPos.y < 0 || localPos.x >= this.sizeX || localPos.y >= this.sizeY)
+        {
+            localPos = new PIXI.Point(-Number.MAX_VALUE, -Number.MAX_VALUE);
+        }
+        this.io.MousePos.x = localPos.x;
+        this.io.MousePos.y = localPos.y;
+
+        if (this.io.WantSetMousePos) {
+            console.log("TODO: MousePos", this.io.MousePos.x, this.io.MousePos.y);
+        }
+
+        if (typeof(document) !== "undefined") {
+            if (this.io.MouseDrawCursor) {
+                document.body.style.cursor = "none";
+            } else {
+                switch (ImGui.GetMouseCursor()) {
+                    case ImGui.MouseCursor.None: document.body.style.cursor = "none"; break;
+                    default: case ImGui.MouseCursor.Arrow: document.body.style.cursor = "default"; break;
+                    case ImGui.MouseCursor.TextInput: document.body.style.cursor = "text"; break;         // When hovering over InputText, etc.
+                    case ImGui.MouseCursor.ResizeAll: document.body.style.cursor = "move"; break;         // Unused
+                    case ImGui.MouseCursor.ResizeNS: document.body.style.cursor = "ns-resize"; break;     // When hovering over an horizontal border
+                    case ImGui.MouseCursor.ResizeEW: document.body.style.cursor = "ew-resize"; break;     // When hovering over a vertical border or a column
+                    case ImGui.MouseCursor.ResizeNESW: document.body.style.cursor = "nesw-resize"; break; // When hovering over the bottom-left corner of a window
+                    case ImGui.MouseCursor.ResizeNWSE: document.body.style.cursor = "nwse-resize"; break; // When hovering over the bottom-right corner of a window
+                    case ImGui.MouseCursor.Hand: document.body.style.cursor = "move"; break;
+                }
+            }
+        }
+
+        // Gamepad navigation mapping [BETA]
+        for (let i = 0; i < this.io.NavInputs.length; ++i) {
+            this.io.NavInputs[i] = 0.0;
+        }
+        if (this.io.ConfigFlags & ImGui.ConfigFlags.NavEnableGamepad) {
+            // Update gamepad inputs
+            const gamepads: (Gamepad | null)[] = (typeof(navigator) !== "undefined" && typeof(navigator.getGamepads) === "function") ? navigator.getGamepads() : [];
+            for (let i = 0; i < gamepads.length; ++i) {
+                const gamepad: Gamepad | null = gamepads[i];
+                if (!gamepad) { continue; }
+                const buttons_count: number = gamepad.buttons.length;
+                const axes_count: number = gamepad.axes.length;
+                const MAP_BUTTON = function(NAV_NO: number, BUTTON_NO: number): void {
+                    if (!gamepad) { return; }
+                    if (buttons_count > BUTTON_NO && gamepad.buttons[BUTTON_NO].pressed)
+                        this.io.NavInputs[NAV_NO] = 1.0;
+                }
+                const MAP_ANALOG = function(NAV_NO: number, AXIS_NO: number, V0: number, V1: number): void {
+                    if (!gamepad) { return; }
+                    let v: number = (axes_count > AXIS_NO) ? gamepad.axes[AXIS_NO] : V0;
+                    v = (v - V0) / (V1 - V0);
+                    if (v > 1.0) v = 1.0;
+                    if (this.io.NavInputs[NAV_NO] < v) this.io.NavInputs[NAV_NO] = v;
+                }
+                // TODO: map input based on vendor and product id
+                // https://developer.mozilla.org/en-US/docs/Web/API/Gamepad/id
+                const match: RegExpMatchArray | null = gamepad.id.match(/^([0-9a-f]{4})-([0-9a-f]{4})-.*$/);
+                const match_chrome: RegExpMatchArray | null = gamepad.id.match(/^.*\(.*Vendor: ([0-9a-f]{4}) Product: ([0-9a-f]{4})\).*$/);
+                const vendor: string = (match && match[1]) || (match_chrome && match_chrome[1]) || "0000";
+                const product: string = (match && match[2]) || (match_chrome && match_chrome[2]) || "0000";
+                switch (vendor + product) {
+                    case "046dc216": // Logitech Logitech Dual Action (Vendor: 046d Product: c216)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    1); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      2); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        0); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_ANALOG(ImGui.NavInput.DpadLeft,    4, -0.3, -0.9); // D-Pad Left
+                    MAP_ANALOG(ImGui.NavInput.DpadRight,   4, +0.3, +0.9); // D-Pad Right
+                    MAP_ANALOG(ImGui.NavInput.DpadUp,      5, -0.3, -0.9); // D-Pad Up
+                    MAP_ANALOG(ImGui.NavInput.DpadDown,    5, +0.3, +0.9); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   6); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   7); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    case "046dc21d": // Logitech Gamepad F310 (STANDARD GAMEPAD Vendor: 046d Product: c21d)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    0); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      1); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        2); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_BUTTON(ImGui.NavInput.DpadLeft,    14); // D-Pad Left
+                    MAP_BUTTON(ImGui.NavInput.DpadRight,   15); // D-Pad Right
+                    MAP_BUTTON(ImGui.NavInput.DpadUp,      12); // D-Pad Up
+                    MAP_BUTTON(ImGui.NavInput.DpadDown,    13); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_ANALOG(ImGui.NavInput.TweakSlow,   6, +0.3, +0.9); // L2 / LT
+                    MAP_ANALOG(ImGui.NavInput.TweakFast,   7, +0.3, +0.9); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    case "2dc86001": // 8Bitdo SN30 Pro  8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6001)
+                    case "2dc86101": // 8Bitdo SN30 Pro (Vendor: 2dc8 Product: 6101)
+                    MAP_BUTTON(ImGui.NavInput.Activate,    1); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      0); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        4); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_ANALOG(ImGui.NavInput.DpadLeft,    6, -0.3, -0.9); // D-Pad Left
+                    MAP_ANALOG(ImGui.NavInput.DpadRight,   6, +0.3, +0.9); // D-Pad Right
+                    MAP_ANALOG(ImGui.NavInput.DpadUp,      7, -0.3, -0.9); // D-Pad Up
+                    MAP_ANALOG(ImGui.NavInput.DpadDown,    7, +0.3, +0.9); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   6); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   7); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   8); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   9); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                    default: // standard gamepad: https://w3c.github.io/gamepad/#remapping
+                    MAP_BUTTON(ImGui.NavInput.Activate,    0); // Cross / A
+                    MAP_BUTTON(ImGui.NavInput.Cancel,      1); // Circle / B
+                    MAP_BUTTON(ImGui.NavInput.Menu,        2); // Square / X
+                    MAP_BUTTON(ImGui.NavInput.Input,       3); // Triangle / Y
+                    MAP_BUTTON(ImGui.NavInput.DpadLeft,    14); // D-Pad Left
+                    MAP_BUTTON(ImGui.NavInput.DpadRight,   15); // D-Pad Right
+                    MAP_BUTTON(ImGui.NavInput.DpadUp,      12); // D-Pad Up
+                    MAP_BUTTON(ImGui.NavInput.DpadDown,    13); // D-Pad Down
+                    MAP_BUTTON(ImGui.NavInput.FocusPrev,   4); // L1 / LB
+                    MAP_BUTTON(ImGui.NavInput.FocusNext,   5); // R1 / RB
+                    MAP_BUTTON(ImGui.NavInput.TweakSlow,   6); // L2 / LT
+                    MAP_BUTTON(ImGui.NavInput.TweakFast,   7); // R2 / RT
+                    MAP_ANALOG(ImGui.NavInput.LStickLeft,  0, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickRight, 0, +0.3, +0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickUp,    1, -0.3, -0.9);
+                    MAP_ANALOG(ImGui.NavInput.LStickDown,  1, +0.3, +0.9);
+                    break;
+                }
+            }
+        }
+
+        ImGui.NewFrame();
+
+        this.update(dt);
+
+        ImGui.EndFrame();
+        ImGui.Render();
+
+        app.renderer.render(this.imgui, this.tex);
+
+        this.surface.interactive = this.io.WantCaptureMouse;
+    }
+}
+
+let canvas: HTMLCanvasElement | null = null;
+
+//export let gl: WebGL2RenderingContext | null = null;
+let g_ShaderHandle: WebGLProgram | null = null;
+let g_VertHandle: WebGLShader | null = null;
+let g_FragHandle: WebGLShader | null = null;
+let g_AttribLocationTex: WebGLUniformLocation | null = null;
+let g_AttribLocationProjMtx: WebGLUniformLocation | null = null;
+let g_AttribLocationPosition: GLint = -1;
+let g_AttribLocationUV: GLint = -1;
+let g_AttribLocationColor: GLint = -1;
+let g_VaoHandle: WebGLVertexArrayObject = null;
+let g_VboHandle: WebGLBuffer | null = null;
+let g_ElementsHandle: WebGLBuffer | null = null;
+let g_FontTexture: WebGLTexture | null = null;
+
+function document_on_copy(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        event.clipboardData.setData("text/plain", clipboard_text);
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function document_on_cut(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        event.clipboardData.setData("text/plain", clipboard_text);
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function document_on_paste(event: ClipboardEvent): void {
+    if (event.clipboardData) {
+        clipboard_text = event.clipboardData.getData("text/plain");
+    }
+    // console.log(`${event.type}: "${clipboard_text}"`);
+    event.preventDefault();
+}
+
+function window_on_gamepadconnected(event: any /* GamepadEvent */): void {
+    console.log("Gamepad connected at index %d: %s. %d buttons, %d axes.",
+    event.gamepad.index, event.gamepad.id,
+    event.gamepad.buttons.length, event.gamepad.axes.length);
+}
+
+function window_on_gamepaddisconnected(event: any /* GamepadEvent */): void {
+    console.log("Gamepad disconnected at index %d: %s.",
+    event.gamepad.index, event.gamepad.id);
+}
+
+function canvas_on_blur(event: FocusEvent): void {
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = false;
+        io.KeyShift = false;
+        io.KeyAlt = false;
+        io.KeySuper = false;
+        for (let i = 0; i < io.KeysDown.length; ++i) {
+            io.KeysDown[i] = false;
+        }
+        for (let i = 0; i < io.MouseDown.length; ++i) {
+            io.MouseDown[i] = false;
+        }
+    }
+}
+
+function canvas_on_keydown(event: KeyboardEvent): void {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = event.ctrlKey;
+        io.KeyShift = event.shiftKey;
+        io.KeyAlt = event.altKey;
+        io.KeySuper = event.metaKey;
+        ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+        io.KeysDown[event.keyCode] = true;
+        // forward to the keypress event
+        if (/*io.WantCaptureKeyboard ||*/ event.key === "Tab") {
+            event.preventDefault();
+        }
+    }
+}
+
+function canvas_on_keyup(event: KeyboardEvent): void  {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.KeyCtrl = event.ctrlKey;
+        io.KeyShift = event.shiftKey;
+        io.KeyAlt = event.altKey;
+        io.KeySuper = event.metaKey;
+        ImGui.IM_ASSERT(event.keyCode >= 0 && event.keyCode < ImGui.IM_ARRAYSIZE(io.KeysDown));
+        io.KeysDown[event.keyCode] = false;
+        if (io.WantCaptureKeyboard) {
+            event.preventDefault();
+        }
+    }
+}
+
+function canvas_on_keypress(event: KeyboardEvent): void  {
+    // console.log(event.type, event.key, event.keyCode);
+    for (var io of contextIOs)
+    {
+        io.AddInputCharacter(event.charCode);
+        if (io.WantCaptureKeyboard) {
+            event.preventDefault();
+        }
+    }
+}
+
+// MouseEvent.button
+// A number representing a given button:
+// 0: Main button pressed, usually the left button or the un-initialized state
+// 1: Auxiliary button pressed, usually the wheel button or the middle button (if present)
+// 2: Secondary button pressed, usually the right button
+// 3: Fourth button, typically the Browser Back button
+// 4: Fifth button, typically the Browser Forward button
+const mouse_button_map: number[] = [ 0, 2, 1, 3, 4 ];
+
+function canvas_on_contextmenu(event: Event): void  {
+    for (var io of contextIOs)
+    {
+        if (io.WantCaptureMouse) { event.preventDefault(); }
+    }
+}
+
+function canvas_on_wheel(event: WheelEvent): void  {
+    for (var io of contextIOs)
+    {
+        let scale: number = 1.0;
+        switch (event.deltaMode) {
+            case event.DOM_DELTA_PIXEL: scale = 0.01; break;
+            case event.DOM_DELTA_LINE: scale = 0.2; break;
+            case event.DOM_DELTA_PAGE: scale = 1.0; break;
+        }
+        io.MouseWheelH = event.deltaX * scale;
+        io.MouseWheel = -event.deltaY * scale; // Mouse wheel: 1 unit scrolls about 5 lines text.
+        if (io.WantCaptureMouse) {
+            event.preventDefault();
+        }
+    }
+}
+
+export function PrePIXIInit(): void
+{
+    PIXI.Renderer.registerPlugin("imgui_renderer", U.fromConstructor(ImGuiImplInternalRenderer));
+}
+
+export function Init(_app: PIXI.Application): void {
+    // Setup Dear ImGui binding
+    ImGui.IMGUI_CHECKVERSION();
+
+    if (typeof(document) !== "undefined") {
+        document.body.addEventListener("copy", document_on_copy);
+        document.body.addEventListener("cut", document_on_cut);
+        document.body.addEventListener("paste", document_on_paste);
+    }
+
+    if (typeof(window) !== "undefined") {
+        window.addEventListener("gamepadconnected", window_on_gamepadconnected);
+        window.addEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+    }
+
+    app = _app;
+    gl = (app.renderer as any).gl;
+    canvas = app.view;
+
+    gl.getExtension("EXT_color_buffer_float");
+
+    if (canvas !== null) {
+        canvas.style.touchAction = "none"; // Disable browser handling of all panning and zooming gestures.
+        canvas.addEventListener("blur", canvas_on_blur);
+        canvas.addEventListener("keydown", canvas_on_keydown);
+        canvas.addEventListener("keyup", canvas_on_keyup);
+        canvas.addEventListener("keypress", canvas_on_keypress);
+        canvas.addEventListener("contextmenu", canvas_on_contextmenu);
+        canvas.addEventListener("wheel", canvas_on_wheel);
+    }
+
+    CreateDeviceObjects();
+}
+
+export function Shutdown(): void {
+    DestroyDeviceObjects();
+
+    if (canvas !== null) {
+        canvas.removeEventListener("blur", canvas_on_blur);
+        canvas.removeEventListener("keydown", canvas_on_keydown);
+        canvas.removeEventListener("keyup", canvas_on_keyup);
+        canvas.removeEventListener("keypress", canvas_on_keypress);
+        canvas.removeEventListener("contextmenu", canvas_on_contextmenu);
+        canvas.removeEventListener("wheel", canvas_on_wheel);
+    }
+
+    app = null;
+    canvas = null;
+
+    if (typeof(window) !== "undefined") {
+        window.removeEventListener("gamepadconnected", window_on_gamepadconnected);
+        window.removeEventListener("gamepaddisconnected", window_on_gamepaddisconnected);
+    }
+
+    if (typeof(document) !== "undefined") {
+        document.body.removeEventListener("copy", document_on_copy);
+        document.body.removeEventListener("cut", document_on_cut);
+        document.body.removeEventListener("paste", document_on_paste);
+    }
+}
+
+function CreateFontsTexture(): void {
+    const io = ImGui.GetIO();
+
+    // Backup GL state
+    const last_texture: WebGLTexture | null = gl && gl.getParameter(gl.TEXTURE_BINDING_2D);
+
+    // Build texture atlas
+    // const width: number = 256;
+    // const height: number = 256;
+    // const pixels: Uint8Array = new Uint8Array(4 * width * height).fill(0xff);
+    const { width, height, pixels } = io.Fonts.GetTexDataAsRGBA32();   // Load as RGBA 32-bits (75% of the memory is wasted, but default font is so small) because it is more likely to be compatible with user's existing shaders. If your ImTextureId represent a higher-level concept than just a GL texture id, consider calling GetTexDataAsAlpha8() instead to save on GPU memory.
+    // console.log(`font texture ${width} x ${height} @ ${pixels.length}`);
+
+    // Upload texture to graphics system
+    g_FontTexture = gl && gl.createTexture();
+    gl && gl.bindTexture(gl.TEXTURE_2D, g_FontTexture);
+    gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
+    gl && gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
+    // gl && gl.pixelStorei(gl.UNPACK_ROW_LENGTH); // WebGL2
+    gl && gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
+
+    // Store our identifier
+    io.Fonts.TexID = g_FontTexture || { foo: "bar" };
+    // console.log("font texture id", g_FontTexture);
+
+    // Restore modified GL state
+    gl && last_texture && gl.bindTexture(gl.TEXTURE_2D, last_texture);
+}
+
+function DestroyFontsTexture(): void {
+    const io = ImGui.GetIO();
+    io.Fonts.TexID = null;
+    gl && gl.deleteTexture(g_FontTexture); g_FontTexture = null;
+}
+
+function CreateDeviceObjects(): void {
+    const vertex_shader: string[] = [
+        "#version 300 es",
+        "uniform mat4 ProjMtx;",
+        "in vec2 Position;",
+        "in vec2 UV;",
+        "in vec4 Color;",
+        "out vec2 Frag_UV;",
+        "out vec4 Frag_Color;",
+        "void main() {",
+        "	Frag_UV = UV;",
+        "	Frag_Color = Color;",
+        "	gl_Position = ProjMtx * vec4(Position.xy,0,1);",
+        "}",
+    ];
+
+    const fragment_shader: string[] = [
+        "#version 300 es",
+        "precision mediump float;", // WebGL requires precision specifiers
+        "uniform sampler2D Texture;",
+        "in vec2 Frag_UV;",
+        "in vec4 Frag_Color;",
+        "out vec4 OutColor;",
+        "void main() {",
+        "	OutColor = Frag_Color * texture(Texture, Frag_UV);",
+        "}",
+    ];
+
+    g_ShaderHandle = gl && gl.createProgram();
+    g_VertHandle = gl && gl.createShader(gl.VERTEX_SHADER);
+    g_FragHandle = gl && gl.createShader(gl.FRAGMENT_SHADER);
+    gl && gl.shaderSource(g_VertHandle as WebGLShader, vertex_shader.join("\n"));
+    gl && gl.shaderSource(g_FragHandle as WebGLShader, fragment_shader.join("\n"));
+    gl && gl.compileShader(g_VertHandle as WebGLShader);
+    gl && gl.compileShader(g_FragHandle as WebGLShader);
+    gl && gl.attachShader(g_ShaderHandle as WebGLProgram, g_VertHandle as WebGLShader);
+    gl && gl.attachShader(g_ShaderHandle as WebGLProgram, g_FragHandle as WebGLShader);
+    gl && gl.linkProgram(g_ShaderHandle as WebGLProgram);
+
+    g_AttribLocationTex = gl && gl.getUniformLocation(g_ShaderHandle as WebGLProgram, "Texture");
+    g_AttribLocationProjMtx = gl && gl.getUniformLocation(g_ShaderHandle as WebGLProgram, "ProjMtx");
+    g_AttribLocationPosition = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "Position") || 0;
+    g_AttribLocationUV = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "UV") || 0;
+    g_AttribLocationColor = gl && gl.getAttribLocation(g_ShaderHandle as WebGLProgram, "Color") || 0;
+
+    g_VaoHandle = gl && gl.createVertexArray();
+    g_VboHandle = gl && gl.createBuffer();
+    g_ElementsHandle = gl && gl.createBuffer();
+
+}
+
+function DestroyDeviceObjects(): void {
+    DestroyFontsTexture();
+
+    gl && gl.deleteVertexArray(g_VaoHandle); g_VaoHandle = null;
+    gl && gl.deleteBuffer(g_VboHandle); g_VboHandle = null;
+    gl && gl.deleteBuffer(g_ElementsHandle); g_ElementsHandle = null;
+
+    g_AttribLocationTex = null;
+    g_AttribLocationProjMtx = null;
+    g_AttribLocationPosition = -1;
+    g_AttribLocationUV = -1;
+    g_AttribLocationColor = -1;
+
+    gl && gl.deleteProgram(g_ShaderHandle); g_ShaderHandle = null;
+    gl && gl.deleteShader(g_VertHandle); g_VertHandle = null;
+    gl && gl.deleteShader(g_FragHandle); g_FragHandle = null;
+}
diff --git a/src/main.js b/src/main.js
index f763140..0c19249 100644
--- a/src/main.js
+++ b/src/main.js
@@ -1,4 +1,4 @@
-System.register(["../imgui-js/example/imgui_impl", "imgui-js"], function (exports_1, context_1) {
+System.register(["./imgui_impl", "imgui-js", "pixi.js", "./utils"], function (exports_1, context_1) {
     "use strict";
     var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
         return new (P || (P = Promise))(function (resolve, reject) {
@@ -8,7 +8,7 @@
             step((generator = generator.apply(thisArg, _arguments || [])).next());
         });
     };
-    var ImGui_Impl, ImGui, imgui_js_1, imgui_js_2, clearColor, windowOpen, text;
+    var ImGui_Impl, imgui_impl_1, ImGui, imgui_js_1, imgui_js_2, PIXI, U, clearColor;
     var __moduleName = context_1 && context_1.id;
     function main() {
         return __awaiter(this, void 0, void 0, function* () {
@@ -20,74 +20,88 @@
     function init() {
         console.log("init()");
         console.log("Total allocated space (uordblks) @ _init:", ImGui.bind.mallinfo().uordblks);
-        // Setup Dear ImGui binding
-        ImGui.IMGUI_CHECKVERSION();
-        ImGui.CreateContext();
-        const io = ImGui.GetIO();
-        io.ConfigFlags |= ImGui.ConfigFlags.NavEnableKeyboard; // Enable Keyboard Controls
-        // Setup style
-        ImGui.StyleColorsLight();
+        ImGui_Impl.PrePIXIInit();
+        let settings = { width: 1, height: 1, antialias: true, backgroundColor: U.vec2col(clearColor) };
+        let app = new PIXI.Application(settings);
         const output = document.getElementById("output") || document.body;
-        const canvas = document.createElement("canvas");
-        output.appendChild(canvas);
-        canvas.tabIndex = 1;
-        canvas.style.position = "absolute";
-        canvas.style.left = "0px";
-        canvas.style.right = "0px";
-        canvas.style.top = "0px";
-        canvas.style.bottom = "0px";
-        canvas.style.width = "100%";
-        canvas.style.height = "100%";
-        ImGui_Impl.Init(canvas);
-        window.requestAnimationFrame(loop);
+        output.appendChild(app.view);
+        app.view.tabIndex = 1;
+        app.view.style.position = "absolute";
+        app.view.style.left = "0px";
+        app.view.style.right = "0px";
+        app.view.style.top = "0px";
+        app.view.style.bottom = "0px";
+        app.view.style.width = "100%";
+        app.view.style.height = "100%";
+        ImGui_Impl.Init(app);
+        app.ticker.add((deltaTime) => {
+            const dt = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+            app.render();
+        });
+        let resizeFunc = function () {
+            app.renderer.resize(window.innerWidth, window.innerHeight);
+        };
+        let bg = new PIXI.Graphics();
+        bg.beginFill(0xFF0000);
+        bg.drawRect(100, 100, 300, 300);
+        bg.endFill();
+        let styleCb = () => { ImGui.StyleColorsLight(); };
+        const imgui = new imgui_impl_1.ImGuiWindow(512, 512, makeUpdate());
+        const imgui2 = new imgui_impl_1.ImGuiWindow(512, 512, makeUpdate2());
+        imgui2.x = 200;
+        imgui2.y = 400;
+        imgui.withContext(styleCb);
+        imgui2.withContext(styleCb);
+        app.stage.addChild(imgui);
+        app.stage.addChild(bg);
+        app.stage.addChild(imgui2);
+        window.onresize = resizeFunc;
+        resizeFunc();
     }
-    function render(timeElapsed) {
-        ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(600, 400), ImGui.ImGuiCond.Always);
-        ImGui.Begin("Test Window", (_ = windowOpen) => windowOpen = _, 0);
-        if (ImGui.Button("Add Text")) {
-            text += "A";
-        }
-        ImGui.Text(text);
-        ImGui.End();
+    function makeUpdate() {
+        let text = "text";
+        return (timeElapsed) => {
+            ImGui.SetNextWindowPos(new imgui_js_2.ImVec2(0, 0));
+            ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(500, 500), ImGui.ImGuiCond.Always);
+            ImGui.Begin("Test Window");
+            if (ImGui.Button("Add Text")) {
+                text += "A";
+            }
+            ImGui.Text(text);
+            ImGui.End();
+        };
     }
-    function loop(timeElapsed) {
-        ImGui_Impl.NewFrame(timeElapsed);
-        ImGui.NewFrame();
-        render(timeElapsed);
-        ImGui.EndFrame();
-        // Rendering
-        ImGui.Render();
-        const gl = ImGui_Impl.gl;
-        if (gl) {
-            gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
-            gl.clearColor(clearColor.x, clearColor.y, clearColor.z, clearColor.w);
-            gl.clear(gl.COLOR_BUFFER_BIT);
-            //gl.useProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound
-        }
-        const ctx = ImGui_Impl.ctx;
-        if (ctx) {
-            // ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-            ctx.fillStyle = `rgba(${clearColor.x * 0xff}, ${clearColor.y * 0xff}, ${clearColor.z * 0xff}, ${clearColor.w})`;
-            ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-        }
-        ImGui_Impl.RenderDrawData(ImGui.GetDrawData());
-        window.requestAnimationFrame(loop);
+    function makeUpdate2() {
+        let text = "";
+        return (timeElapsed) => {
+            ImGui.SetNextWindowPos(new imgui_js_2.ImVec2(0, 0));
+            ImGui.SetNextWindowSize(new imgui_js_2.ImVec2(500, 500), ImGui.ImGuiCond.Always);
+            ImGui.Begin("Test Window 2");
+            ImGui.InputText("Input: ", (_ = text) => text = _);
+            ImGui.Text(text);
+            ImGui.End();
+        };
     }
     return {
         setters: [
             function (ImGui_Impl_1) {
                 ImGui_Impl = ImGui_Impl_1;
+                imgui_impl_1 = ImGui_Impl_1;
             },
             function (ImGui_1) {
                 ImGui = ImGui_1;
                 imgui_js_1 = ImGui_1;
                 imgui_js_2 = ImGui_1;
+            },
+            function (PIXI_1) {
+                PIXI = PIXI_1;
+            },
+            function (U_1) {
+                U = U_1;
             }
         ],
         execute: function () {
             clearColor = new imgui_js_1.ImVec4(0.7, 0.9, 1, 1);
-            windowOpen = true;
-            text = "text";
             (function () {
                 if (document.readyState == "complete") {
                     main();
diff --git a/src/main.js.map b/src/main.js.map
index d10898e..c4ec491 100644
--- a/src/main.js.map
+++ b/src/main.js.map
@@ -1 +1 @@
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\ No newline at end of file
+{"version":3,"file":"main.js","sourceRoot":"","sources":["main.ts"],"names":[],"mappings":";;;;;;;;;;;;IASA,SAAe,IAAI;;YAEf,OAAO,CAAC,GAAG,CAAC,QAAQ,CAAC,CAAC;YACtB,MAAM,KAAK,CAAC,OAAO,EAAE,CAAC;YACtB,MAAM,CAAC,qBAAqB,CAAC,IAAI,CAAC,CAAC;QACvC,CAAC;KAAA;IAGD,SAAS,IAAI;QAET,OAAO,CAAC,GAAG,CAAC,QAAQ,CAAC,CAAC;QACtB,OAAO,CAAC,GAAG,CAAC,2CAA2C,EAAE,KAAK,CAAC,IAAI,CAAC,QAAQ,EAAE,CAAC,QAAQ,CAAC,CAAC;QAEzF,UAAU,CAAC,WAAW,EAAE,CAAC;QAEzB,IAAI,QAAQ,GAAG,EAAE,KAAK,EAAE,CAAC,EAAE,MAAM,EAAE,CAAC,EAAE,SAAS,EAAE,IAAI,EAAE,eAAe,EAAE,CAAC,CAAC,OAAO,CAAC,UAAU,CAAC,EAAE,CAAC;QAEhG,IAAI,GAAG,GAAsB,IAAI,IAAI,CAAC,WAAW,CAAC,QAAQ,CAAC,CAAC;QAE5D,MAAM,MAAM,GAAgB,QAAQ,CAAC,cAAc,CAAC,QAAQ,CAAC,IAAI,QAAQ,CAAC,IAAI,CAAC;QAC/E,MAAM,CAAC,WAAW,CAAC,GAAG,CAAC,IAAI,CAAC,CAAC;QAC7B,GAAG,CAAC,IAAI,CAAC,QAAQ,GAAG,CAAC,CAAC;QACtB,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,QAAQ,GAAG,UAAU,CAAC;QACrC,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,IAAI,GAAG,KAAK,CAAC;QAC5B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,KAAK,GAAG,KAAK,CAAC;QAC7B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,GAAG,GAAG,KAAK,CAAC;QAC3B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,MAAM,GAAG,KAAK,CAAC;QAC9B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,KAAK,GAAG,MAAM,CAAC;QAC9B,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,MAAM,GAAG,MAAM,CAAC;QAE/B,UAAU,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC;QAErB,GAAG,CAAC,MAAM,CAAC,GAAG,CACV,CAAC,SAAiB,EAAE,EAAE;YAElB,MAAM,EAAE,GAAW,SAAS,GAAG,CAAC,GAAG,CAAC,IAAI,GAAG,IAAI,CAAC,QAAQ,CAAC,WAAW,CAAC,CAAC;YAEtE,GAAG,CAAC,MAAM,EAAE,CAAC;QACjB,CAAC,CACJ,CAAC;QAGF,IAAI,UAAU,GAAG;YAEb,GAAG,CAAC,QAAQ,CAAC,MAAM,CAAC,MAAM,CAAC,UAAU,EAAE,MAAM,CAAC,WAAW,CAAC,CAAC;QAC/D,CAAC,CAAC;QAEF,IAAI,EAAE,GAAkB,IAAI,IAAI,CAAC,QAAQ,EAAE,CAAC;QAC5C,EAAE,CAAC,SAAS,CAAC,QAAQ,CAAC,CAAC;QACvB,EAAE,CAAC,QAAQ,CAAC,GAAG,EAAE,GAAG,EAAE,GAAG,EAAE,GAAG,CAAC,CAAC;QAChC,EAAE,CAAC,OAAO,EAAE,CAAC;QAEb,IAAI,OAAO,GAAe,GAAG,EAAE,GAAG,KAAK,CAAC,gBAAgB,EAAE,CAAC,CAAC,CAAC,CAAC;QAE9D,MAAM,KAAK,GAAgB,IAAI,wBAAW,CAAC,GAAG,EAAE,GAAG,EAAE,UAAU,EAAE,CAAC,CAAC;QACnE,MAAM,MAAM,GAAgB,IAAI,wBAAW,CAAC,GAAG,EAAE,GAAG,EAAE,WAAW,EAAE,CAAC,CAAC;QACrE,MAAM,CAAC,CAAC,GAAG,GAAG,CAAC;QACf,MAAM,CAAC,CAAC,GAAG,GAAG,CAAC;QAEf,KAAK,CAAC,WAAW,CAAC,OAAO,CAAC,CAAC;QAC3B,MAAM,CAAC,WAAW,CAAC,OAAO,CAAC,CAAC;QAE5B,GAAG,CAAC,KAAK,CAAC,QAAQ,CAAC,KAAK,CAAC,CAAC;QAC1B,GAAG,CAAC,KAAK,CAAC,QAAQ,CAAC,EAAE,CAAC,CAAC;QACvB,GAAG,CAAC,KAAK,CAAC,QAAQ,CAAC,MAAM,CAAC,CAAC;QAE3B,MAAM,CAAC,QAAQ,GAAG,UAAU,CAAC;QAC7B,UAAU,EAAE,CAAC;IACjB,CAAC;IAED,SAAS,UAAU;QAEf,IAAI,IAAI,GAAW,MAAM,CAAC;QAC1B,OAAO,CAAC,WAAmB,EAAE,EAAE;YAE3B,KAAK,CAAC,gBAAgB,CAAC,IAAI,iBAAM,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;YACzC,KAAK,CAAC,iBAAiB,CAAC,IAAI,iBAAM,CAAC,GAAG,EAAE,GAAG,CAAC,EAAE,KAAK,CAAC,SAAS,CAAC,MAAM,CAAC,CAAC;YACtE,KAAK,CAAC,KAAK,CAAC,aAAa,CAAC,CAAC;YAC3B,IAAI,KAAK,CAAC,MAAM,CAAC,UAAU,CAAC,EAC5B;gBACI,IAAI,IAAI,GAAG,CAAC;aACf;YACD,KAAK,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;YACjB,KAAK,CAAC,GAAG,EAAE,CAAC;QAChB,CAAC,CAAC;IACN,CAAC;IAED,SAAS,WAAW;QAEhB,IAAI,IAAI,GAAU,EAAE,CAAC;QACrB,OAAO,CAAC,WAAmB,EAAE,EAAE;YAE3B,KAAK,CAAC,gBAAgB,CAAC,IAAI,iBAAM,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;YACzC,KAAK,CAAC,iBAAiB,CAAC,IAAI,iBAAM,CAAC,GAAG,EAAE,GAAG,CAAC,EAAE,KAAK,CAAC,SAAS,CAAC,MAAM,CAAC,CAAC;YACtE,KAAK,CAAC,KAAK,CAAC,eAAe,CAAC,CAAC;YAC7B,KAAK,CAAC,SAAS,CAAC,SAAS,EAAE,CAAC,CAAC,GAAG,IAAI,EAAE,EAAE,CAAC,IAAI,GAAG,CAAC,CAAC,CAAC;YACnD,KAAK,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;YACjB,KAAK,CAAC,GAAG,EAAE,CAAC;QAChB,CAAC,CAAC;IACN,CAAC;;;;;;;;;;;;;;;;;;;;YA5FK,UAAU,GAAU,IAAI,iBAAM,CAAC,GAAG,EAAE,GAAG,EAAE,CAAC,EAAE,CAAC,CAAC,CAAC;YA8FrD,CAAC;gBAEI,IAAI,QAAQ,CAAC,UAAU,IAAI,UAAU,EACrC;oBACI,IAAI,EAAE,CAAC;iBACV;qBAED;oBACI,MAAM,CAAC,MAAM,GAAG,IAAI,CAAC;iBACxB;YACL,CAAC,CAAC,EAAE,CAAC;QACN,CAAC"}
\ No newline at end of file
diff --git a/src/main.ts b/src/main.ts
index fcf1b3f..026aae6 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,8 +1,11 @@
-import * as ImGui_Impl from "../imgui-js/example/imgui_impl";
+import * as ImGui_Impl from "./imgui_impl";
+import { ImGuiWindow } from "./imgui_impl";
 import * as ImGui from "imgui-js";
 import { ImGuiIO } from "imgui-js"
 import { ImVec4 } from "imgui-js";
 import { ImVec2 } from "imgui-js";
+import * as PIXI from "pixi.js";
+import * as U from "./utils";
 
 async function main(): Promise<void>
 {
@@ -11,82 +14,98 @@
     window.requestAnimationFrame(init);
 }
 
+const clearColor:ImVec4 = new ImVec4(0.7, 0.9, 1, 1);
 function init(): void
 {
     console.log("init()");
     console.log("Total allocated space (uordblks) @ _init:", ImGui.bind.mallinfo().uordblks);
 
-    // Setup Dear ImGui binding
-    ImGui.IMGUI_CHECKVERSION();
-    ImGui.CreateContext();
+    ImGui_Impl.PrePIXIInit();
 
-    const io: ImGuiIO = ImGui.GetIO();
-    io.ConfigFlags |= ImGui.ConfigFlags.NavEnableKeyboard;  // Enable Keyboard Controls
+    let settings = { width: 1, height: 1, antialias: true, backgroundColor: U.vec2col(clearColor) };
 
-    // Setup style
-    ImGui.StyleColorsLight();
+    let app : PIXI.Application = new PIXI.Application(settings);
 
     const output: HTMLElement = document.getElementById("output") || document.body;
-    const canvas: HTMLCanvasElement = document.createElement("canvas");
-    output.appendChild(canvas);
-    canvas.tabIndex = 1;
-    canvas.style.position = "absolute";
-    canvas.style.left = "0px";
-    canvas.style.right = "0px";
-    canvas.style.top = "0px";
-    canvas.style.bottom = "0px";
-    canvas.style.width = "100%";
-    canvas.style.height = "100%";
-    ImGui_Impl.Init(canvas);
+    output.appendChild(app.view);
+    app.view.tabIndex = 1;
+    app.view.style.position = "absolute";
+    app.view.style.left = "0px";
+    app.view.style.right = "0px";
+    app.view.style.top = "0px";
+    app.view.style.bottom = "0px";
+    app.view.style.width = "100%";
+    app.view.style.height = "100%";
 
-    window.requestAnimationFrame(loop);
-}
+    ImGui_Impl.Init(app);
 
-const clearColor:ImVec4 = new ImVec4(0.7, 0.9, 1, 1);
-let windowOpen: boolean = true;
-let text: string = "text";
-function render(timeElapsed: number): void
-{
-    ImGui.SetNextWindowSize(new ImVec2(600, 400), ImGui.ImGuiCond.Always);
-    ImGui.Begin("Test Window", (_ = windowOpen) => windowOpen = _, 0); 
-    if (ImGui.Button("Add Text"))
+    app.ticker.add(
+        (deltaTime: number) =>
+        {
+            const dt: number = deltaTime * 1 / (1000 * PIXI.settings.TARGET_FPMS);
+
+            app.render();
+        }
+    );
+
+
+    let resizeFunc = function()
     {
-        text += "A";
-    }
-    ImGui.Text(text);
-    ImGui.End();
+        app.renderer.resize(window.innerWidth, window.innerHeight);
+    };
+
+    let bg: PIXI.Graphics = new PIXI.Graphics();
+    bg.beginFill(0xFF0000);
+    bg.drawRect(100, 100, 300, 300);
+    bg.endFill();
+
+    let styleCb: () => void = () => { ImGui.StyleColorsLight(); };
+
+    const imgui: ImGuiWindow = new ImGuiWindow(512, 512, makeUpdate());
+    const imgui2: ImGuiWindow = new ImGuiWindow(512, 512, makeUpdate2());
+    imgui2.x = 200;
+    imgui2.y = 400;
+
+    imgui.withContext(styleCb);
+    imgui2.withContext(styleCb);
+    
+    app.stage.addChild(imgui);
+    app.stage.addChild(bg);
+    app.stage.addChild(imgui2);
+
+    window.onresize = resizeFunc;
+    resizeFunc();
 }
 
-
-function loop(timeElapsed: number): void
+function makeUpdate(): (timeElapsed: number) => void
 {
-    ImGui_Impl.NewFrame(timeElapsed);
-    ImGui.NewFrame();
+    let text: string = "text";
+    return (timeElapsed: number) =>
+    {
+        ImGui.SetNextWindowPos(new ImVec2(0, 0));
+        ImGui.SetNextWindowSize(new ImVec2(500, 500), ImGui.ImGuiCond.Always);
+        ImGui.Begin("Test Window"); 
+        if (ImGui.Button("Add Text"))
+        {
+            text += "A";
+        }
+        ImGui.Text(text);
+        ImGui.End();
+    };
+}
 
-    render(timeElapsed);
-
-    ImGui.EndFrame();
-
-    // Rendering
-    ImGui.Render();
-    const gl: WebGLRenderingContext | null = ImGui_Impl.gl;
-    if (gl) {
-        gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
-        gl.clearColor(clearColor.x, clearColor.y, clearColor.z, clearColor.w);
-        gl.clear(gl.COLOR_BUFFER_BIT);
-        //gl.useProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound
-    }
-
-    const ctx: CanvasRenderingContext2D | null = ImGui_Impl.ctx;
-    if (ctx) {
-        // ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-        ctx.fillStyle = `rgba(${clearColor.x * 0xff}, ${clearColor.y * 0xff}, ${clearColor.z * 0xff}, ${clearColor.w})`;
-        ctx.fillRect(0, 0, ctx.canvas.width, ctx.canvas.height);
-    }
-
-    ImGui_Impl.RenderDrawData(ImGui.GetDrawData());
-
-    window.requestAnimationFrame(loop);
+function makeUpdate2(): (timeElapsed: number) => void
+{
+    let text:string = "";
+    return (timeElapsed: number) =>
+    {
+        ImGui.SetNextWindowPos(new ImVec2(0, 0));
+        ImGui.SetNextWindowSize(new ImVec2(500, 500), ImGui.ImGuiCond.Always);
+        ImGui.Begin("Test Window 2"); 
+        ImGui.InputText("Input: ", (_ = text) => text = _);
+        ImGui.Text(text);
+        ImGui.End();
+    };
 }
 
 (function()
diff --git a/src/utils.js b/src/utils.js
new file mode 100644
index 0000000..c91e062
--- /dev/null
+++ b/src/utils.js
@@ -0,0 +1,20 @@
+System.register([], function (exports_1, context_1) {
+    "use strict";
+    var __moduleName = context_1 && context_1.id;
+    function fromConstructor(constr) {
+        return constr;
+    }
+    exports_1("fromConstructor", fromConstructor);
+    function vec2col(v) {
+        return (((v.x * 255) & 0xFF) << 16) +
+            (((v.y * 255) & 0xFF) << 8) +
+            (((v.z * 255) & 0xFF) << 0);
+    }
+    exports_1("vec2col", vec2col);
+    return {
+        setters: [],
+        execute: function () {
+        }
+    };
+});
+//# sourceMappingURL=utils.js.map
\ No newline at end of file
diff --git a/src/utils.js.map b/src/utils.js.map
new file mode 100644
index 0000000..2d50463
--- /dev/null
+++ b/src/utils.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"utils.js","sourceRoot":"","sources":["utils.ts"],"names":[],"mappings":";;;IAEA,SAAgB,eAAe,CAAC,MAAW;QAEvC,OAAO,MAA6C,CAAA;IACxD,CAAC;;IAED,SAAgB,OAAO,CAAC,CAAS;QAE7B,OAAO,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,GAAG,GAAG,CAAC,GAAG,IAAI,CAAC,IAAI,EAAE,CAAC;YAC5B,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,GAAG,GAAG,CAAC,GAAG,IAAI,CAAC,IAAI,CAAC,CAAC;YAC3B,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,GAAG,GAAG,CAAC,GAAG,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC;IACvC,CAAC;;;;;QACD,CAAC"}
\ No newline at end of file
diff --git a/src/utils.ts b/src/utils.ts
new file mode 100644
index 0000000..f24fb7f
--- /dev/null
+++ b/src/utils.ts
@@ -0,0 +1,13 @@
+import { ImVec4 } from "imgui-js";
+
+export function fromConstructor(constr: any):((params: any[]) => any)
+{
+    return constr as unknown as ((params: any[]) => any)
+}
+
+export function vec2col(v: ImVec4): number
+{
+    return (((v.x * 255) & 0xFF) << 16) +
+           (((v.y * 255) & 0xFF) << 8) +
+           (((v.z * 255) & 0xFF) << 0);
+}
diff --git a/tsconfig.json b/tsconfig.json
index 120ba81..417e748 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -12,8 +12,8 @@
 		"incremental": true,
 		"paths": {
 		    "*": [
-			"node_modules/*",
-			"src/types/*"
+			"src/types/*",
+			"node_modules/*"
 		    ]
 		}
 	},
@@ -21,6 +21,11 @@
 	[
 		"src/main.ts"
 	],
+	"include":
+	[
+
+		"src/types/**/*.d.ts"
+	],
 	"exclude":
 	[
 		"node_modules/**/*",
