rgetBack(canvas);

		function loop(count) {
			requestAnimationFrame(loop);

			controller.update();

			box3.max.y = Math.sin(count * 0.001) * 5 + 5;
			box3.getBoundingSphere(sphere);
			root && (root.euler.y = count * 0.001);
			vnh && vnh.update();
			vth && vth.update();

			scene.updateMatrix();
			scene.updateRenderStates(camera);
			scene.updateRenderQueue(camera);

			renderer.setRenderTarget(backRenderTarget);

			renderer.setClearColor(0, 0, 0, 1);
			renderer.clear(true, true, false);
			rendere