erTarget

			renderer.setRenderTarget(sceneRenderTarget);
			renderer.setClearColor(0, 0, 0, 0);
			renderer.clear(true, true, true);

			renderer.beginRender();

			renderer.renderRenderableList(mainRenderQueueLayer.opaque, renderStates, {});
			renderer.renderRenderableList(mainRenderQueueLayer.transparent, renderStates, {});

			renderer.endRender();

			renderer.updateRenderTargetMipmap(sceneRenderTarget);

			// Step2: render transmission to transmissionRenderTarget

			renderer.setRenderTarget(transmi