[cocos2d-js] 이미지 mask 만들기

var game = cc.Layer.extend({
  init:function () {
    this._super();

    backgroundLayer =  cc.LayerColor.create(new cc.Color(40,40,40,255), 320, 480);

    var target = cc.Sprite.create("resources/doge.png"); /*child to clip*/
    var mask = cc.Sprite.create("resources/doge-mask.png"); /*mask*/

    var maskedFill = new cc.ClippingNode(mask);
    maskedFill.setAlphaThreshold(0.9);
    maskedFill.addChild(target);
    maskedFill.setPosition(144, 224);

    backgroundLayer.addChild(maskedFill,0);
    this.addChild(backgroundLayer);

  }
});