[]图片显示好奇怪

        public function LayaAirDemo()

		{

			Laya.init(800,800);

			Laya.loader.load('logo.png',Handler.create(this,onLoaded));

		}

		

		private function onLoaded():void

		{

			var texture:Texture=Loader.getRes('logo.png');

			var sp:Sprite=new Sprite();

			sp.graphics.clear();//把上次的绘制清除

			sp.graphics.drawTexture(texture);

			Laya.stage.addChild(sp);

		}