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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>
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