diff --git a/src/core/renderers/webgl/utils/checkMaxIfStatmentsInShader.js b/src/core/renderers/webgl/utils/checkMaxIfStatmentsInShader.js
index 97b8488..062cc0b 100644
--- a/src/core/renderers/webgl/utils/checkMaxIfStatmentsInShader.js
+++ b/src/core/renderers/webgl/utils/checkMaxIfStatmentsInShader.js
@@ -9,13 +9,19 @@
     '}'
 ].join('\n');
 
-var checkMaxIfStatmentsInShader = function(maxIfs)
+var checkMaxIfStatmentsInShader = function(maxIfs, gl)
 {
-    var tinyCanvas = document.createElement('canvas');
-    tinyCanvas.width = 1;
-    tinyCanvas.height = 1;
+    var createTempContext = !gl;
 
-    var gl = glCore.createContext(tinyCanvas);
+    if(createTempContext)
+    {
+        var tinyCanvas = document.createElement('canvas');
+        tinyCanvas.width = 1;
+        tinyCanvas.height = 1;
+
+        gl = glCore.createContext(tinyCanvas);
+    }
+
     var shader = gl.createShader(gl.FRAGMENT_SHADER);
 
     while(true)
@@ -36,10 +42,13 @@
         }
     }
 
-    // get rid of context
-    if(gl.getExtension('WEBGL_lose_context'))
+    if(createTempContext)
     {
-        gl.getExtension('WEBGL_lose_context').loseContext();
+        // get rid of context
+        if(gl.getExtension('WEBGL_lose_context'))
+        {
+            gl.getExtension('WEBGL_lose_context').loseContext();
+        }
     }
 
     return maxIfs;

diff --git a/src/core/renderers/webgl/utils/checkMaxIfStatmentsInShader.js b/src/core/renderers/webgl/utils/checkMaxIfStatmentsInShader.js
index 97b8488..062cc0b 100644
--- a/src/core/renderers/webgl/utils/checkMaxIfStatmentsInShader.js
+++ b/src/core/renderers/webgl/utils/checkMaxIfStatmentsInShader.js
@@ -9,13 +9,19 @@
     '}'
 ].join('\n');
 
-var checkMaxIfStatmentsInShader = function(maxIfs)
+var checkMaxIfStatmentsInShader = function(maxIfs, gl)
 {
-    var tinyCanvas = document.createElement('canvas');
-    tinyCanvas.width = 1;
-    tinyCanvas.height = 1;
+    var createTempContext = !gl;
 
-    var gl = glCore.createContext(tinyCanvas);
+    if(createTempContext)
+    {
+        var tinyCanvas = document.createElement('canvas');
+        tinyCanvas.width = 1;
+        tinyCanvas.height = 1;
+
+        gl = glCore.createContext(tinyCanvas);
+    }
+
     var shader = gl.createShader(gl.FRAGMENT_SHADER);
 
     while(true)
@@ -36,10 +42,13 @@
         }
     }
 
-    // get rid of context
-    if(gl.getExtension('WEBGL_lose_context'))
+    if(createTempContext)
     {
-        gl.getExtension('WEBGL_lose_context').loseContext();
+        // get rid of context
+        if(gl.getExtension('WEBGL_lose_context'))
+        {
+            gl.getExtension('WEBGL_lose_context').loseContext();
+        }
     }
 
     return maxIfs;
diff --git a/src/core/sprites/webgl/SpriteRenderer.js b/src/core/sprites/webgl/SpriteRenderer.js
index 2eb2223..ffca275 100644
--- a/src/core/sprites/webgl/SpriteRenderer.js
+++ b/src/core/sprites/webgl/SpriteRenderer.js
@@ -109,7 +109,7 @@
     this.MAX_TEXTURES = Math.min(gl.getParameter(gl.MAX_TEXTURE_IMAGE_UNITS), CONST.SPRITE_MAX_TEXTURES);
 
     // step 2: check the maximum number of if statements the shader can have too..
-    this.MAX_TEXTURES = checkMaxIfStatmentsInShader( this.MAX_TEXTURES );
+    this.MAX_TEXTURES = checkMaxIfStatmentsInShader( this.MAX_TEXTURES, gl );
 
     this.shader = generateMultiTextureShader(gl, this.MAX_TEXTURES);
     // create a couple of buffers

diff --git a/src/core/renderers/webgl/utils/checkMaxIfStatmentsInShader.js b/src/core/renderers/webgl/utils/checkMaxIfStatmentsInShader.js
index 97b8488..062cc0b 100644
--- a/src/core/renderers/webgl/utils/checkMaxIfStatmentsInShader.js
+++ b/src/core/renderers/webgl/utils/checkMaxIfStatmentsInShader.js
@@ -9,13 +9,19 @@
     '}'
 ].join('\n');
 
-var checkMaxIfStatmentsInShader = function(maxIfs)
+var checkMaxIfStatmentsInShader = function(maxIfs, gl)
 {
-    var tinyCanvas = document.createElement('canvas');
-    tinyCanvas.width = 1;
-    tinyCanvas.height = 1;
+    var createTempContext = !gl;
 
-    var gl = glCore.createContext(tinyCanvas);
+    if(createTempContext)
+    {
+        var tinyCanvas = document.createElement('canvas');
+        tinyCanvas.width = 1;
+        tinyCanvas.height = 1;
+
+        gl = glCore.createContext(tinyCanvas);
+    }
+
     var shader = gl.createShader(gl.FRAGMENT_SHADER);
 
     while(true)
@@ -36,10 +42,13 @@
         }
     }
 
-    // get rid of context
-    if(gl.getExtension('WEBGL_lose_context'))
+    if(createTempContext)
     {
-        gl.getExtension('WEBGL_lose_context').loseContext();
+        // get rid of context
+        if(gl.getExtension('WEBGL_lose_context'))
+        {
+            gl.getExtension('WEBGL_lose_context').loseContext();
+        }
     }
 
     return maxIfs;
diff --git a/src/core/sprites/webgl/SpriteRenderer.js b/src/core/sprites/webgl/SpriteRenderer.js
index 2eb2223..ffca275 100644
--- a/src/core/sprites/webgl/SpriteRenderer.js
+++ b/src/core/sprites/webgl/SpriteRenderer.js
@@ -109,7 +109,7 @@
     this.MAX_TEXTURES = Math.min(gl.getParameter(gl.MAX_TEXTURE_IMAGE_UNITS), CONST.SPRITE_MAX_TEXTURES);
 
     // step 2: check the maximum number of if statements the shader can have too..
-    this.MAX_TEXTURES = checkMaxIfStatmentsInShader( this.MAX_TEXTURES );
+    this.MAX_TEXTURES = checkMaxIfStatmentsInShader( this.MAX_TEXTURES, gl );
 
     this.shader = generateMultiTextureShader(gl, this.MAX_TEXTURES);
     // create a couple of buffers
diff --git a/src/deprecation.js b/src/deprecation.js
index 3b6dbab..5a6f63f 100644
--- a/src/deprecation.js
+++ b/src/deprecation.js
@@ -240,7 +240,22 @@
             console.warn('The math namespace is deprecated, please access members already accessible on PIXI.');
             return core;
         }
-    }
+    },
+
+     /**
+     * @class
+     * @private
+     * @name PIXI.AbstractFilter
+     * @see PIXI.Filter
+     * @deprecated since version 3.0.6
+     */
+    AbstractFilter: {
+        get: function()
+        {
+            console.warn('AstractFilter has been renamed to Filter, please use PIXI.Filter');
+            return core.Filter;
+        }
+    },
 });
 
 core.DisplayObject.prototype.generateTexture = function(renderer, scaleMode, resolution)
@@ -363,7 +378,7 @@
     AbstractFilter: {
         get: function()
         {
-            console.warn('filters.AbstractFilter is an undocumented alias, please use AbstractFilter from now on.');
+            console.warn('AstractFilter has been renamed to Filter, please use PIXI.Filter');
             return core.AbstractFilter;
         }
     },
@@ -415,3 +430,4 @@
     console.warn('utils.canUseNewCanvasBlendModes() is deprecated, please use CanvasTinter.canUseMultiply from now on');
     return core.CanvasTinter.canUseMultiply;
 };
+