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+<!DOCTYPE html>
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+<html lang="en">
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+ <head>
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+ <title>three.js webgpu - materials arrays and geometry groups</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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+ <link type="text/css" rel="stylesheet" href="main.css">
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+ </head>
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+
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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">three.js</a> - WebGPU Materials Arrays and Geometry Groups<br />
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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.module.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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+
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+ import * as THREE from 'three';
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+
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+ import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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+ import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
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+
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+ let renderer, scene, camera, controls;
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+ let planeMesh, boxMesh, boxMeshWireframe, planeMeshWireframe;
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+ let materials;
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+
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+ const api = {
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+ webgpu: true
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+ };
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+
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+
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+ init( ! api.webgpu );
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+
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+ function init( forceWebGL = false ) {
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+
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+ if ( renderer ) {
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+
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+ renderer.dispose();
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+ controls.dispose();
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+ document.body.removeChild( renderer.domElement );
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+
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+ }
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+
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+ // renderer
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+ renderer = new THREE.WebGLRenderer( {
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+ forceWebGL,
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+ antialias: true,
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+ } );
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+ renderer.setPixelRatio( window.devicePixelRatio );
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+ renderer.setAnimationLoop( animate );
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+ document.body.appendChild( renderer.domElement );
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+
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+ // scene
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+ scene = new THREE.Scene();
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+ scene.background = new THREE.Color( 0x000000 );
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+
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+ // camera
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+ camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 100 );
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+ camera.position.set( 0, 0, 10 );
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+
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+ // controls
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+ controls = new OrbitControls( camera, renderer.domElement );
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+
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+ // materials
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+ materials = [
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+ new THREE.MeshBasicMaterial( { color: 0xff1493, side: THREE.DoubleSide } ),
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+ new THREE.MeshBasicMaterial( { color: 0x0000ff, side: THREE.DoubleSide } ),
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+ new THREE.MeshBasicMaterial( { color: 0x00ff00, side: THREE.DoubleSide } ),
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+ ];
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+
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+ // plane geometry
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+ const planeGeometry = new THREE.PlaneGeometry( 1, 1, 4, 4 );
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+
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+ planeGeometry.clearGroups();
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+ const numFacesPerRow = 4; // Number of faces in a row (since each face is made of 2 triangles)
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+
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+ planeGeometry.addGroup( 0, 6 * numFacesPerRow, 0 );
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+ planeGeometry.addGroup( 6 * numFacesPerRow, 6 * numFacesPerRow, 1 );
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+ planeGeometry.addGroup( 12 * numFacesPerRow, 6 * numFacesPerRow, 2 );
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+
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+ // box geometry
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+ const boxGeometry = new THREE.BoxGeometry( .75, .75, .75 );
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+
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+ boxGeometry.clearGroups();
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+ boxGeometry.addGroup( 0, 6, 0 ); // front face
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+ boxGeometry.addGroup( 6, 6, 0 ); // back face
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+ boxGeometry.addGroup( 12, 6, 2 ); // top face
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+ boxGeometry.addGroup( 18, 6, 2 ); // bottom face
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+ boxGeometry.addGroup( 24, 6, 1 ); // left face
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+ boxGeometry.addGroup( 30, 6, 1 ); // right face
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+
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+ scene.background = forceWebGL ? new THREE.Color( 0x000000 ) : new THREE.Color( 0x222222 );
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+
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+ // meshes
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+ planeMesh = new THREE.Mesh( planeGeometry, materials );
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+
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+ const materialsWireframe = [];
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+
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+ for ( let index = 0; index < materials.length; index ++ ) {
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+
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+ const material = new THREE.MeshBasicMaterial( { color: materials[ index ].color, side: THREE.DoubleSide, wireframe: true } );
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+ materialsWireframe.push( material );
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+
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+ }
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+
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+ planeMeshWireframe = new THREE.Mesh( planeGeometry, materialsWireframe );
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+ boxMeshWireframe = new THREE.Mesh( boxGeometry, materialsWireframe );
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+
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+ boxMesh = new THREE.Mesh( boxGeometry, materials );
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+
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+ planeMesh.position.set( - 1.5, - 1, 0 );
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+ boxMesh.position.set( 1.5, - 0.75, 0 );
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+ boxMesh.rotation.set( - Math.PI / 8, Math.PI / 4, Math.PI / 4 );
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+
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+ planeMeshWireframe.position.set( - 1.5, 1, 0 );
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+ boxMeshWireframe.position.set( 1.5, 1.25, 0 );
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+ boxMeshWireframe.rotation.set( - Math.PI / 8, Math.PI / 4, Math.PI / 4 );
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+
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+ scene.add( planeMesh, planeMeshWireframe );
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+ scene.add( boxMesh, boxMeshWireframe );
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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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+ boxMesh.rotation.y += 0.005;
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+ boxMesh.rotation.x += 0.005;
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+ boxMeshWireframe.rotation.y += 0.005;
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+ boxMeshWireframe.rotation.x += 0.005;
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+ renderer.render( scene, camera );
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+
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+ }
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+
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+
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+ // gui
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+
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+ const gui = new GUI();
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+
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+ gui.add( api, 'webgpu' ).onChange( () => {
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+
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+ init( ! api.webgpu );
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+
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+ } );
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+
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+ // listeners
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+
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+ window.addEventListener( 'resize', onWindowResize );
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+
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+ function onWindowResize() {
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+
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+ const width = window.innerWidth;
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+ const height = window.innerHeight;
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+
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+ camera.aspect = width / height;
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+ camera.updateProjectionMatrix();
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+
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+ renderer.setSize( width, height );
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+
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+ }
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+
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+ </script>
|
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+
|
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+ </body>
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+</html>
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Renaud Rohlinger
