terial.transparent = false;
			copyPass.material.uniforms.tDiffuse = sceneRenderTarget.texture;
			copyPass.render(renderer);

			copyPass.material.transparent = true;
			copyPass.material.uniforms.tDiffuse = transmissionRenderTarget.texture;
			copyPass.render(renderer);

			// Step4: render resultRenderTarget to screen

			renderer.setRenderTarget(backRenderTarget);
			fxaaPass.material.uniforms.tDiffuse = resultRenderTarget.texture;
			fxaaPass.render(renderer);
		}

		function onWindowResize() {
			widt