diff --git a/src/core/renderers/webgl/WebGLRenderer.js b/src/core/renderers/webgl/WebGLRenderer.js
index df3bef2..e921d6d 100644
--- a/src/core/renderers/webgl/WebGLRenderer.js
+++ b/src/core/renderers/webgl/WebGLRenderer.js
@@ -176,6 +176,12 @@
     {
         const gl = this.gl;
 
+        // restore a context if it was previously lost
+        if (gl.isContextLost() && gl.getExtension('WEBGL_lose_context'))
+        {
+            gl.getExtension('WEBGL_lose_context').restoreContext();
+        }
+
         // create a texture manager...
         this.textureManager = new TextureManager(this);
         this.textureGC = new TextureGarbageCollector(this);

diff --git a/src/core/renderers/webgl/WebGLRenderer.js b/src/core/renderers/webgl/WebGLRenderer.js
index df3bef2..e921d6d 100644
--- a/src/core/renderers/webgl/WebGLRenderer.js
+++ b/src/core/renderers/webgl/WebGLRenderer.js
@@ -176,6 +176,12 @@
     {
         const gl = this.gl;
 
+        // restore a context if it was previously lost
+        if (gl.isContextLost() && gl.getExtension('WEBGL_lose_context'))
+        {
+            gl.getExtension('WEBGL_lose_context').restoreContext();
+        }
+
         // create a texture manager...
         this.textureManager = new TextureManager(this);
         this.textureGC = new TextureGarbageCollector(this);
diff --git a/src/core/renderers/webgl/utils/checkMaxIfStatmentsInShader.js b/src/core/renderers/webgl/utils/checkMaxIfStatmentsInShader.js
index 14ae0f3..8326e63 100644
--- a/src/core/renderers/webgl/utils/checkMaxIfStatmentsInShader.js
+++ b/src/core/renderers/webgl/utils/checkMaxIfStatmentsInShader.js
@@ -13,6 +13,13 @@
 {
     const createTempContext = !gl;
 
+    // @if DEBUG
+    if (maxIfs === 0)
+    {
+        throw new Error('Invalid value of `0` passed to `checkMaxIfStatementsInShader`');
+    }
+    // @endif
+
     if (createTempContext)
     {
         const tinyCanvas = document.createElement('canvas');