Fix clear color not normalized issue

Author: pandamicro

cocos2d/core/CCDirectorWebGL.js

@@ -160,11 +160,6 @@ cc.game.addEventListener(cc.game.EVENT_RENDERER_INITED, function () {
             cc.eventManager.setEnabled(true);
     };
 
-    _p._clear = function () {
-        var gl = cc._renderContext;
-        gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
-    };
-
     _p.getVisibleSize = function () {
         //if (this._openGLView) {
         return this._openGLView.getVisibleSize();

cocos2d/core/renderer/RendererWebGL.js

@@ -232,7 +232,7 @@ return {
 
     clear: function () {
         var gl = cc._renderContext;
-        gl.clearColor(this._clearColor.r, this._clearColor.g, this._clearColor.b, this._clearColor.a);
+        gl.clearColor(this._clearColor.r / 255, this._clearColor.g / 255, this._clearColor.b / 255, this._clearColor.a / 255);
         gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
     },