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+<!DOCTYPE html>
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+<html lang="en">
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+ <head>
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+ <title>threejs webgpu - materials - ground projected environment mapping</title>
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+ <meta charset="utf-8" />
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+ <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0"/>
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+ <meta property="og:title" content="threejs webgpu - materials - ground projected environment mapping" />
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+ <meta property="og:type" content="website" />
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+ <meta property="og:url" content="https://threejs.org/examples/webgpu_materials_envmaps_groundprojected.html" />
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+ <meta property="og:image" content="https://threejs.org/examples/screenshots/webgpu_materials_envmaps_groundprojected.jpg" />
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+ <link type="text/css" rel="stylesheet" href="example.css">
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+ </head>
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+ <body>
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+ <div id="info">
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+ <a href="https://threejs.org/" target="_blank" rel="noopener" class="logo-link"></a>
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+
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+ <div class="title-wrapper">
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+ <a href="https://threejs.org/" target="_blank" rel="noopener">three.js</a><span>Ground Projected Env Maps</span>
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+ </div>
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+
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+ <small>
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+ Ferrari 458 Italia model by <a href="https://sketchfab.com/models/57bf6cc56931426e87494f554df1dab6" target="_blank" rel="noopener">vicent091036</a><br>
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+ <a href="https://polyhaven.com/a/blouberg_sunrise_2" target="_blank" rel="noopener">Blouberg Sunrise 2</a> by <a href="https://gregzaal.com/" target="_blank" rel="noopener">Greg Zaal</a>
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+ </small>
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+ </div>
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+
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+ <script type="importmap">
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+ {
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+ "imports": {
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+ "three": "../build/three.webgpu.js",
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+ "three/webgpu": "../build/three.webgpu.js",
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+ "three/tsl": "../build/three.tsl.js",
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+ "three/addons/": "./jsm/"
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+ }
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+ }
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+ </script>
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+
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+ <script type="module">
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+ import * as THREE from 'three/webgpu';
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+
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+ import { Inspector } from 'three/addons/inspector/Inspector.js';
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+ import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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+ import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
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+ import { DRACOLoader } from 'three/addons/loaders/DRACOLoader.js';
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+ import { HDRLoader } from 'three/addons/loaders/HDRLoader.js';
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+ import { getGroundProjectedNormal } from 'three/addons/tsl/utils/GroundedSkybox.js';
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+
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+ import { cubeTexture, float } from 'three/tsl';
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+
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+ const params = {
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+ height: 15,
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+ radius: 100,
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+ enabled: true,
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+ };
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+
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+ let camera, scene, renderer;
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+
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+ init();
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+
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+ async function init() {
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+
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+ camera = new THREE.PerspectiveCamera(
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+ 40,
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+ window.innerWidth / window.innerHeight,
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+ 1,
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+ 1000
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+ );
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+ camera.position.set( - 20, 7, 20 );
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+ camera.lookAt( 0, 4, 0 );
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+
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+ scene = new THREE.Scene();
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+
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+ const hdrLoader = new HDRLoader();
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+ const envMap = await hdrLoader.loadAsync( 'textures/equirectangular/blouberg_sunrise_2_1k.hdr' );
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+ envMap.mapping = THREE.EquirectangularReflectionMapping;
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+
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+ scene.environment = envMap;
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+
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+ const dracoLoader = new DRACOLoader();
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+ dracoLoader.setDecoderPath( 'jsm/libs/draco/gltf/' );
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+
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+ const loader = new GLTFLoader();
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+ loader.setDRACOLoader( dracoLoader );
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+
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+ const shadow = new THREE.TextureLoader().load( 'models/gltf/ferrari_ao.png' );
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+
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+ loader.load( 'models/gltf/ferrari.glb', function ( gltf ) {
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+
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+ const bodyMaterial = new THREE.MeshPhysicalMaterial( {
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+ color: 0x000000, metalness: 1.0, roughness: 0.8,
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+ clearcoat: 1.0, clearcoatRoughness: 0.2
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+ } );
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+
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+ const detailsMaterial = new THREE.MeshStandardMaterial( {
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+ color: 0xffffff, metalness: 1.0, roughness: 0.5
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+ } );
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+
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+ const glassMaterial = new THREE.MeshPhysicalMaterial( {
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+ color: 0xffffff, metalness: 0.25, roughness: 0, transmission: 1.0
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+ } );
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+
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+ const carModel = gltf.scene.children[ 0 ];
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+ carModel.scale.multiplyScalar( 4 );
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+ carModel.rotation.y = Math.PI;
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+
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+ carModel.getObjectByName( 'body' ).material = bodyMaterial;
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+
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+ carModel.getObjectByName( 'rim_fl' ).material = detailsMaterial;
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+ carModel.getObjectByName( 'rim_fr' ).material = detailsMaterial;
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+ carModel.getObjectByName( 'rim_rr' ).material = detailsMaterial;
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+ carModel.getObjectByName( 'rim_rl' ).material = detailsMaterial;
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+ carModel.getObjectByName( 'trim' ).material = detailsMaterial;
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+
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+ carModel.getObjectByName( 'glass' ).material = glassMaterial;
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+
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+ // shadow
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+ const mesh = new THREE.Mesh(
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+ new THREE.PlaneGeometry( 0.655 * 4, 1.3 * 4 ),
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+ new THREE.MeshBasicMaterial( {
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+ map: shadow, blending: THREE.MultiplyBlending, toneMapped: false, transparent: true, premultipliedAlpha: true
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+ } )
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+ );
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+ mesh.rotation.x = - Math.PI / 2;
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+ carModel.add( mesh );
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+
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+ scene.add( carModel );
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+
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+ } );
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+
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+ //
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+
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+ renderer = new THREE.WebGPURenderer( { antialias: true } );
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+ renderer.setPixelRatio( window.devicePixelRatio );
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+ renderer.setAnimationLoop( animate );
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+ renderer.inspector = new Inspector();
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+ renderer.toneMapping = THREE.ACESFilmicToneMapping;
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+ document.body.appendChild( renderer.domElement );
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+
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+ await renderer.init();
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+
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+ // use a cube map to avoid visual artifacts at the skybox's poles
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+
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+ const size = envMap.image.height;
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+ const cubeRenderTarget = new THREE.CubeRenderTarget( size );
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+ cubeRenderTarget.fromEquirectangularTexture( renderer, envMap );
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+ const cubeMap = cubeRenderTarget.texture;
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+
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+ // grounded skybox
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+
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+ const geometry = new THREE.IcosahedronGeometry( 1, 16 );
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+ const material = new THREE.MeshBasicNodeMaterial( { side: THREE.DoubleSide } );
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+ material.colorNode = cubeTexture( cubeMap, getGroundProjectedNormal( float( params.radius ), float( params.height ) ) );
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+
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+ const skybox = new THREE.Mesh( geometry, material );
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+ skybox.scale.setScalar( params.radius );
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+ scene.add( skybox );
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+
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+ //
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+
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+ const controls = new OrbitControls( camera, renderer.domElement );
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+ controls.target.set( 0, 2, 0 );
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+ controls.maxPolarAngle = THREE.MathUtils.degToRad( 90 );
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+ controls.maxDistance = 80;
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+ controls.minDistance = 20;
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+ controls.enablePan = false;
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+ controls.update();
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+
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+ window.addEventListener( 'resize', onWindowResize );
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+
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+ const gui = renderer.inspector.createParameters( 'Parameters' );
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+ gui.add( params, 'enabled' ).name( 'Grounded' ).onChange( function ( value ) {
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+
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+ if ( value ) {
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+
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+ scene.add( skybox );
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+ scene.background = null;
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+
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+ } else {
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+
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+ scene.remove( skybox );
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+ scene.background = scene.environment;
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+
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+ }
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+
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+ } );
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+
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+
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+
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+ }
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+
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+ function onWindowResize() {
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+
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+ camera.aspect = window.innerWidth / window.innerHeight;
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+ camera.updateProjectionMatrix();
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+
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+
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+ }
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+
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+ function animate() {
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+
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+ renderer.render( scene, camera );
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+
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+ }
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+ </script>
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+ </body>
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+</html>
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Michael Herzog
