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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js - WebGPU - Backdrop</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" rel="noopener">three.js</a> WebGPU - Backdrop
- </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 { float, vec3, color, viewportSharedTexture, hue, overlay, posterize, grayscale, saturation, viewportSafeUV, screenUV, checker, uv, timerLocal, oscSine, output } from 'three/tsl';
- import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
- import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
- let camera, scene, renderer;
- let portals, rotate = true;
- let mixer, clock;
- init();
- function init() {
- camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 0.01, 100 );
- camera.position.set( 1, 2, 3 );
- scene = new THREE.Scene();
- scene.backgroundNode = screenUV.y.mix( color( 0x66bbff ), color( 0x4466ff ) );
- camera.lookAt( 0, 1, 0 );
- clock = new THREE.Clock();
- // lights
- const light = new THREE.SpotLight( 0xffffff, 1 );
- light.power = 2000;
- camera.add( light );
- scene.add( camera );
- const loader = new GLTFLoader();
- loader.load( 'models/gltf/Michelle.glb', function ( gltf ) {
- const object = gltf.scene;
- mixer = new THREE.AnimationMixer( object );
- const material = object.children[ 0 ].children[ 0 ].material;
- material.outputNode = oscSine( timerLocal( .1 ) ).mix( output, posterize( output.add( .1 ), 4 ).mul( 2 ) );
- const action = mixer.clipAction( gltf.animations[ 0 ] );
- action.play();
- scene.add( object );
- } );
- // portals
- const geometry = new THREE.SphereGeometry( .3, 32, 16 );
- portals = new THREE.Group();
- scene.add( portals );
- function addBackdropSphere( backdropNode, backdropAlphaNode = null ) {
- const distance = 1;
- const id = portals.children.length;
- const rotation = THREE.MathUtils.degToRad( id * 45 );
- const material = new THREE.MeshStandardNodeMaterial( { color: 0x0066ff } );
- material.roughnessNode = float( .2 );
- material.metalnessNode = float( 0 );
- material.backdropNode = backdropNode;
- material.backdropAlphaNode = backdropAlphaNode;
- material.transparent = true;
- const mesh = new THREE.Mesh( geometry, material );
- mesh.position.set(
- Math.cos( rotation ) * distance,
- 1,
- Math.sin( rotation ) * distance
- );
- portals.add( mesh );
- }
- addBackdropSphere( hue( viewportSharedTexture().bgr, oscSine().mul( Math.PI ) ) );
- addBackdropSphere( viewportSharedTexture().rgb.oneMinus() );
- addBackdropSphere( grayscale( viewportSharedTexture().rgb ) );
- addBackdropSphere( saturation( viewportSharedTexture().rgb, 10 ), oscSine() );
- addBackdropSphere( overlay( viewportSharedTexture().rgb, checker( uv().mul( 10 ) ) ) );
- addBackdropSphere( viewportSharedTexture( viewportSafeUV( screenUV.mul( 40 ).floor().div( 40 ) ) ) );
- addBackdropSphere( viewportSharedTexture( viewportSafeUV( screenUV.mul( 80 ).floor().div( 80 ) ) ).add( color( 0x0033ff ) ) );
- addBackdropSphere( vec3( 0, 0, viewportSharedTexture().b ) );
- // renderer
- renderer = new THREE.WebGPURenderer( { antialias: false } );
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( window.innerWidth, window.innerHeight );
- renderer.setAnimationLoop( animate );
- renderer.toneMapping = THREE.NeutralToneMapping;
- renderer.toneMappingExposure = 0.3;
- document.body.appendChild( renderer.domElement );
- const controls = new OrbitControls( camera, renderer.domElement );
- controls.target.set( 0, 1, 0 );
- controls.addEventListener( 'start', () => rotate = false );
- controls.addEventListener( 'end', () => rotate = true );
- controls.update();
- window.addEventListener( 'resize', onWindowResize );
- }
- function onWindowResize() {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- }
- function animate() {
- const delta = clock.getDelta();
- if ( mixer ) mixer.update( delta );
- if ( rotate ) portals.rotation.y += delta * 0.5;
- renderer.render( scene, camera );
- }
- </script>
- </body>
- </html>
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