examples/webgpu_instance_uniform.html

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	<head>
		<title>three.js - WebGPU - Instance Uniform</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">
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	<body>

		<div id="info">
			<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - WebGPU - Instance Uniform
		</div>

		<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>

		<script type="importmap">
			{
				"imports": {
					"three": "../build/three.module.js",
					"three/addons/": "./jsm/",
					"three/nodes": "./jsm/nodes/Nodes.js"
				}
			}
		</script>

		<script type="module">

			import * as THREE from 'three';
			import * as Nodes from 'three/nodes';
			import { add, mul } from 'three/nodes';

			import WebGPU from 'three/addons/capabilities/WebGPU.js';
			import WebGPURenderer from 'three/addons/renderers/webgpu/WebGPURenderer.js';

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

			import { TeapotGeometry } from 'three/addons/geometries/TeapotGeometry.js';

			import Stats from 'three/addons/libs/stats.module.js';

			class InstanceUniformNode extends Nodes.Node {

				constructor() {

					super( 'vec3' );

					this.updateType = Nodes.NodeUpdateType.Object;

					this.uniformNode = new Nodes.UniformNode( new THREE.Color() );

				}

				update( frame ) {

					const mesh = frame.object;

					const meshColor = mesh.color;

					this.uniformNode.value.copy( meshColor );

				}

				generate( builder, output ) {

					return this.uniformNode.build( builder, output );

				}

			}

			let stats;

			let camera, scene, renderer;
			let controls;

			const objects = [];

			init().then( animate ).catch( error );

			async function init() {

				if ( WebGPU.isAvailable() === false ) {

					document.body.appendChild( WebGPU.getErrorMessage() );

					throw new Error( 'No WebGPU support' );

				}

				const container = document.createElement( 'div' );
				document.body.appendChild( container );

				camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 4000 );
				camera.position.set( 0, 200, 1200 );

				scene = new THREE.Scene();

				// Grid

				const helper = new THREE.GridHelper( 1000, 40, 0x303030, 0x303030 );
				helper.material.colorNode = new Nodes.AttributeNode( 'color' );
				helper.position.y = - 75;
				scene.add( helper );

				// CubeMap

				const path = 'textures/cube/SwedishRoyalCastle/';
				const format = '.jpg';
				const urls = [
					path + 'px' + format, path + 'nx' + format,
					path + 'py' + format, path + 'ny' + format,
					path + 'pz' + format, path + 'nz' + format
				];

				const cubeTexture = new THREE.CubeTextureLoader().load( urls );

				// Materials

				const instanceUniform = new InstanceUniformNode();
				const cubeTextureNode = new Nodes.CubeTextureNode( cubeTexture );

				const material = new THREE.MeshStandardMaterial();
				material.colorNode = add( instanceUniform, cubeTextureNode );
				material.emissiveNode = mul( instanceUniform, cubeTextureNode );

				// Geometry

				const geometry = new TeapotGeometry( 50, 18 );

				for ( let i = 0, l = 12; i < l; i ++ ) {

					addMesh( geometry, material );

				}

				//

				renderer = new WebGPURenderer();
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				container.appendChild( renderer.domElement );

				//

				controls = new OrbitControls( camera, renderer.domElement );
				controls.minDistance = 400;
				controls.maxDistance = 2000;

				//

				stats = new Stats();
				container.appendChild( stats.dom );

				//

				window.addEventListener( 'resize', onWindowResize );

				return renderer.init();

			}

			function addMesh( geometry, material ) {

				const mesh = new THREE.Mesh( geometry, material );

				mesh.color = new THREE.Color( Math.random() * 0xffffff );

				mesh.position.x = ( objects.length % 4 ) * 200 - 300;
				mesh.position.z = Math.floor( objects.length / 4 ) * 200 - 200;

				mesh.rotation.x = Math.random() * 200 - 100;
				mesh.rotation.y = Math.random() * 200 - 100;
				mesh.rotation.z = Math.random() * 200 - 100;

				objects.push( mesh );

				scene.add( mesh );

			}

			function onWindowResize() {

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

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

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				render();
				stats.update();

			}

			function render() {

				for ( let i = 0, l = objects.length; i < l; i ++ ) {

					const object = objects[ i ];

					object.rotation.x += 0.01;
					object.rotation.y += 0.005;

				}

				renderer.render( scene, camera );

			}

			function error( error ) {

				console.error( error );

			}

		</script>

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