Merge pull request phaserjs#5559 from mattjennings/fix-5558

Fixes phaserjs#5558

Author: photonstorm

src/display/mask/BitmapMask.js

@@ -146,7 +146,10 @@ var BitmapMask = new Class({
 
         scene.sys.game.events.on(GameEvents.CONTEXT_RESTORED, this.createMask, this);
 
-        renderer.on(RenderEvents.RESIZE, this.createMask, this);
+        if (renderer)
+        {
+            renderer.on(RenderEvents.RESIZE, this.createMask, this);
+        }
     },
 
     /**
@@ -160,7 +163,7 @@ var BitmapMask = new Class({
     {
         var renderer = this.renderer;
 
-        if (!renderer.gl)
+        if (!renderer || !renderer.gl)
         {
             return;
         }
@@ -197,7 +200,7 @@ var BitmapMask = new Class({
     {
         var renderer = this.renderer;
 
-        if (!renderer.gl || !this.mainTexture)
+        if (!renderer || !renderer.gl || !this.mainTexture)
         {
             return;
         }
@@ -299,8 +302,11 @@ var BitmapMask = new Class({
     {
         this.clearMask();
 
-        this.renderer.off(RenderEvents.RESIZE, this.createMask, this);
-
+        if (this.renderer)
+        {
+            this.renderer.off(RenderEvents.RESIZE, this.createMask, this);
+        }
+        
         this.bitmapMask = null;
         this.prevFramebuffer = null;
         this.renderer = null;

src/gameobjects/tilesprite/TileSprite.js

@@ -277,6 +277,11 @@ var TileSprite = new Class({
 
         scene.sys.game.events.on(GameEvents.CONTEXT_RESTORED, function (renderer)
         {
+            if (!renderer)
+            {
+                return;
+            }
+            
             var gl = renderer.gl;
 
             this.dirty = true;
@@ -429,7 +434,7 @@ var TileSprite = new Class({
         var fw = this.potWidth;
         var fh = this.potHeight;
 
-        if (!this.renderer.gl)
+        if (!this.renderer || !this.renderer.gl)
         {
             fw = frame.cutWidth;
             fh = frame.cutHeight;
@@ -448,7 +453,7 @@ var TileSprite = new Class({
             fw, fh
         );
 
-        if (this.renderer.gl)
+        if (this.renderer && this.renderer.gl)
         {
             this.fillPattern = this.renderer.canvasToTexture(canvas, this.fillPattern);
         }

src/textures/Texture.js

@@ -509,7 +509,7 @@ var Texture = new Class({
 
         var renderer = this.manager.game.renderer;
 
-        if (renderer.type === CONST.WEBGL)
+        if (renderer && renderer.type === CONST.WEBGL)
         {
             renderer.resetTextures(true);
         }