Fixed Smoothing so it doesn't use the CanvasPool.

Author: photonstorm

v3/src/dom/Smoothing.js

@@ -1,7 +1,9 @@
-var CanvasPool = require('./CanvasPool');
 
-var Smoothing = {
+//  Browser specific prefix, so not going to change between contexts, only between browsers
+var prefix = '';
 
+var Smoothing = function ()
+{
     /**
     * Gets the Smoothing Enabled vendor prefix being used on the given context, or null if not set.
     * iife
@@ -10,29 +12,49 @@ var Smoothing = {
     * @param {CanvasRenderingContext2D} context - The context to enable or disable the image smoothing on.
     * @return {string|null} Returns the smoothingEnabled vendor prefix, or null if not set on the context.
     */
-    prefix: (function ()
+    var getPrefix = function (context)
     {
-        var canvas = CanvasPool.create(this, 1, 1);
-        var ctx = canvas.getContext('2d');
-
         var vendors = [ 'i', 'webkitI', 'msI', 'mozI', 'oI' ];
 
-        vendors.forEach(function (vendor)
+        for (var i = 0; i < vendors.length; i++)
         {
-            var s = vendor + 'mageSmoothingEnabled';
+            var s = vendors[i] + 'mageSmoothingEnabled';
 
-            if (s in ctx)
+            if (s in context)
             {
-                CanvasPool.remove(canvas);
                 return s;
             }
-        });
-
-        CanvasPool.remove(canvas);
+        }
 
         return null;
+    };
+
+    /**
+    * Sets the Image Smoothing property on the given context. Set to false to disable image smoothing.
+    * By default browsers have image smoothing enabled, which isn't always what you visually want, especially
+    * when using pixel art in a game. Note that this sets the property on the context itself, so that any image
+    * drawn to the context will be affected. This sets the property across all current browsers but support is
+    * patchy on earlier browsers, especially on mobile.
+    *
+    * @method Phaser.Canvas.setSmoothingEnabled
+    * @param {CanvasRenderingContext2D} context - The context to enable or disable the image smoothing on.
+    * @param {boolean} value - If set to true it will enable image smoothing, false will disable it.
+    * @return {CanvasRenderingContext2D} Returns the source context.
+    */
+    var enable = function (context)
+    {
+        if (prefix === '')
+        {
+            prefix = getPrefix(context);
+        }
 
-    })(),
+        if (prefix)
+        {
+            context[prefix] = true;
+        }
+
+        return context;
+    };
 
     /**
     * Sets the Image Smoothing property on the given context. Set to false to disable image smoothing.
@@ -46,15 +68,20 @@ var Smoothing = {
     * @param {boolean} value - If set to true it will enable image smoothing, false will disable it.
     * @return {CanvasRenderingContext2D} Returns the source context.
     */
-    enable: function (context, value)
+    var disable = function (context)
     {
-        if (Smoothing.prefix)
+        if (prefix === '')
+        {
+            prefix = getPrefix(context);
+        }
+
+        if (prefix)
         {
-            context[Smoothing.prefix] = value;
+            context[prefix] = false;
         }
 
         return context;
-    },
+    };
 
     /**
      * Returns `true` if the given context has image smoothing enabled, otherwise returns `false`.
@@ -64,11 +91,17 @@ var Smoothing = {
      * @param {CanvasRenderingContext2D} context - The context to check for smoothing on.
      * @return {boolean} True if the given context has image smoothing enabled, otherwise false.
      */
-    isEnabled: function (context)
+    var isEnabled = function (context)
     {
-        return (Smoothing.prefix !== null) ? context[Smoothing.prefix] : null;
-    }
+        return (prefix !== null) ? context[prefix] : null;
+    };
 
+    return {
+        disable: disable,
+        enable: enable,
+        getPrefix: getPrefix,
+        isEnabled: isEnabled
+    };
 };
 
 module.exports = Smoothing();