[]在开启webgl模式下，每次运行texture类的getPixels方法内存都会增加

module Main {

    import Sprite = Laya.Sprite

    import Texture = Laya.Texture

    import Handler = Laya.Handler



    export class MaskDemo {

        private Res: string;

        private img: Laya.Image;



        constructor() {

            //Laya.init(400, 640, Laya.WebGL);

            //设置舞台背景色

            Laya.stage.bgColor = "#ffffff"

            Laya.Stat.show()

            //资源路径

            this.Res = "test.png";



            this.img = new Laya.Image();

            this.img.pos(200, 200)



            //获取图片资源，绘制到画布

            this.img.skin = this.Res

            //添加到舞台

            Laya.stage.addChild(this.img);

        }

        private cacheCanvas: Laya.HTMLCanvas

        private cacheTexture: Laya.Texture

        init(){

                let rect = this.img.getSelfBounds()

                this.img.pivot(Math.round(rect.width / 2), Math.round(rect.height / 2))

                let bound = this.img.getBounds()

                this.cacheCanvas = this.img.drawToCanvas(Math.ceil(bound.width), 

                                                        Math.ceil(bound.height), 

                                                        Math.round(bound.width / 2), 

                                                        Math.round(bound.height / 2))

                this.cacheTexture = new Laya.Texture()

                this.cacheTexture.setTo(this.cacheCanvas)

        }

        getPixels(){

            this.cacheTexture.getPixels(0,0,120,120)

        }

    }

}

Laya.init(400, 640, Laya.WebGL)

var app=new Main.MaskDemo()

Laya.timer.frameOnce(5, app, ()=>{

    app.init()

    Laya.timer.frameLoop(2, app, app.getPixels)

})