[]帮忙看看Texture类getPixels内存泄漏的问题。

package

{	

	import laya.display.Sprite;

	import laya.events.Event;

	import laya.maths.Point;

	import laya.resource.HTMLCanvas;

	import laya.resource.Texture;

	import laya.utils.Handler;

	import laya.utils.Stat;

	import laya.webgl.WebGL;

	

	public class Main

	{

		

		private var _tex:Texture;

		private var _htmlCanvas:HTMLCanvas;

		private var _colorSpr:Sprite;

		private var _colorTex:Texture;

		private var _initPixelCount:int;

		

		public function Main()

		{

			Laya.init(1024, 768, WebGL);

			Stat.show(0, 0);

			Laya.stage.bgColor = "#fff";

			

			Laya.loader.load("assets/images/color1.png", Handler.create(this, __loadImageHandler));

		}

		

		private function __loadImageHandler():void

		{

			_colorSpr = new Sprite();			

			_colorTex = Laya.loader.getRes("assets/images/color1.png");

			_colorSpr.graphics.drawTexture(_colorTex);

			_colorSpr.cacheAs = "bitmap";

			_colorSpr.pos((1024 - _colorTex.width) >> 1, (768 - _colorTex.height) >> 1);

			_colorSpr.size(_colorTex.width, _colorTex.height);

			Laya.stage.addChild(_colorSpr);

			

			_initPixelCount = getPixel(_colorTex);

			addEvent();

		}

		

		private function addEvent():void

		{

			_colorSpr.on(Event.MOUSE_MOVE, this, __moveHandler);

		}

		

		private function __moveHandler():void

		{

			var p:Point = toLocal(new Point(Laya.stage.mouseX, Laya.stage.mouseY), _colorSpr);

			var cir:Sprite = new Sprite();			

			cir.graphics.drawCircle(0, 0, 15, "#fff");

			cir.pos(p.x, p.y);

			cir.blendMode = "destination-out";

			_colorSpr.addChild(cir);

			

			_htmlCanvas = _colorSpr.drawToCanvas(_colorTex.width, _colorTex.height, _colorSpr.x, _colorSpr.y);

			_tex = new Texture(_htmlCanvas);

			

			/************调用该方法导致内存泄漏*************/

			var pixelCount:int = getPixel(_tex);

			/************调用该方法导致内存泄漏*************/

			

			if(pixelCount / _initPixelCount < 0.3)

			{

				trace("remove");			

				_htmlCanvas.clear();

				_htmlCanvas.destroy();

				_tex.destroy();

				

				_colorSpr.off(Event.MOUSE_MOVE, this, __moveHandler);

			}

		}

		

		private function getPixel(tex:Texture):int

		{

			var pixelCount:int = 0;

			/************getPixels内存泄漏*************/

			var arr:Array = tex.getPixels(0, 0, tex.width, tex.height);

			/************getPixels内存泄漏*************/

			for(var i:int = 0; i < arr.length; i++)

			{

				if(arr > 0)

				{

					pixelCount++;

				}

			}

			return pixelCount;

		}

		

		private function toLocal(point:Object,mc:Sprite):Point

		{	

			/*

			* 参数point可以是Point类型和DisplayObject类型

			* mc是目标对象

			*/			

			var p:Object;			

			if(point is Sprite) {

				p = new Point();

				p.x = point.x;

				p.y = point.y;

				p = localToGlobal(Sprite(point));

			}else if(point is Point) {

				p = point;

			}

			

			var pp:Point = mc.globalToLocal(Point(p));

			return pp;

		}

		

		private function localToGlobal(mc:Sprite):Point

		{	

			var p:Point = new Point();

			p.x = mc.x;

			p.y = mc.y;

			

			var pp:Point = (mc.parent as Sprite).localToGlobal(p);

			return pp;

		}

	}

}