cocos2d js 安卓web情况下显示模糊的问题

打开cocos2d-HTML5/cocos2d/core/platform/CCEGLView.js，找到_setupContainer方法将

var devicePixelRatio = view._devicePixelRatio = 1;

改为

var devicePixelRatio = view._devicePixelRatio = window.devicePixelRatio || 1;

即可

在cocos2d-html5/cocos2d/下找到CCDrawingPrimitivesCanvas.js。打开这个文件，309行找打drawImage方法。加入以下代码

var ctx = this._renderContext;
(function (canvas, ctx) {
var devicePixelRatio = window.devicePixelRatio || 1;
var backingStorePixelRatio = ctx.webkitBackingStorePixelRatio ||
ctx.mozBackingStorePixelRatio ||
ctx.msBackingStorePixelRatio ||
ctx.oBackingStorePixelRatio ||
ctx.backingStorePixelRatio || 1;


var ratio = devicePixelRatio / backingStorePixelRatio;


if (devicePixelRatio !== backingStorePixelRatio) {
sourceSize.width *= ratio;
sourceSize.height *= ratio;
ctx.scale(ratio, ratio);
}

})(canvas, ctx);

ok，修改完成。打包发布吧！