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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgpu - multiple render targets</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<link type="text/css" rel="stylesheet" href="main.css">
	</head>
	<body>

		<div id="info">
			<a href="https://threejs.org" target="_blank">threejs</a> webgpu - multiple rendertargets
		</div>

		<script type="importmap">
			{
				"imports": {
					"three": "../build/three.webgpu.js",
					"three/tsl": "../build/three.webgpu.js",
					"three/addons/": "./jsm/"
				}
			}
		</script>

		<script type="module">

			import * as THREE from 'three';
			import { mix, vec2, step, texture, uv, screenUV, normalWorld, output, mrt } from 'three/tsl';

			import { OrbitControls } from 'three/addons/controls/OrbitControls.js';

			let camera, scene, renderer, torus;
			let postProcessing, renderTarget;

			init();

			function init() {

				renderer = new THREE.WebGPURenderer( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.setAnimationLoop( render );
				document.body.appendChild( renderer.domElement );

				// Create a multi render target with Float buffers

				renderTarget = new THREE.RenderTarget(
					window.innerWidth * window.devicePixelRatio,
					window.innerHeight * window.devicePixelRatio,
					{ count: 2, minFilter: THREE.NearestFilter, magFilter: THREE.NearestFilter }
				);

				// Name our G-Buffer attachments for debugging

				renderTarget.textures[ 0 ].name = 'output';
				renderTarget.textures[ 1 ].name = 'normal';

				// Scene

				scene = new THREE.Scene();
				scene.background = new THREE.Color( 0x222222 );

				camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.1, 50 );
				camera.position.z = 4;

				const loader = new THREE.TextureLoader();

				const diffuse = loader.load( 'textures/hardwood2_diffuse.jpg' );
				diffuse.colorSpace = THREE.SRGBColorSpace;
				diffuse.wrapS = THREE.RepeatWrapping;
				diffuse.wrapT = THREE.RepeatWrapping;

				const torusMaterial = new THREE.NodeMaterial();
				torusMaterial.colorNode = texture( diffuse, uv().mul( vec2( 10, 4 ) ) );

				torus = new THREE.Mesh( new THREE.TorusKnotGeometry( 1, 0.3, 128, 32 ), torusMaterial );
				scene.add( torus );

				// MRT

				renderer.setMRT( mrt( {
					'output': output,
					'normal': normalWorld
				} ) );

				// Post Processing

				postProcessing = new THREE.PostProcessing( renderer );
				postProcessing.outputNode = mix( texture( renderTarget.textures[ 0 ] ), texture( renderTarget.textures[ 1 ] ), step( 0.5, screenUV.x ) );

				// Controls

				new OrbitControls( camera, renderer.domElement );

				window.addEventListener( 'resize', onWindowResize );

			}

			function onWindowResize() {

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

				renderer.setSize( window.innerWidth, window.innerHeight );

				const dpr = renderer.getPixelRatio();
				renderTarget.setSize( window.innerWidth * dpr, window.innerHeight * dpr );

			}

			function render( time ) {

				torus.rotation.y = ( time / 1000 ) * .4;

				// render scene into target
				renderer.setRenderTarget( renderTarget );
				renderer.render( scene, camera );

				// render post FX
				renderer.setRenderTarget( null );
				postProcessing.render();

			}

		</script>

	</body>
</html>