[LayaAir 1.0]同一个Graphics里面绘制超过20000个矢量rect的情况下，Uncaught Error: IBQuadrangle count（之前发起的问题不知道为什么找不到）

var a:Sprite = new Sprite();

			var count:int = 0;

			for(var i:int=0; i<200; i++)

			{

				for(var j:int=0; j<100; j++)

				{

					if(count == 10000)

					{

						var htmlCanvas:HTMLCanvas = a.drawToCanvas(width,height,0,0);

						var texture:Texture = new Texture(htmlCanvas);	

						var b:Sprite = new Sprite();

						b.graphics.drawTexture(texture);

						a.graphics.clear(true);

						a.destroy();

						a = b;

					}

					a.graphics.drawRect(10*i, 10*j, 10, 10, "#ff0000");

					count++;

				}

			}