javascript
/
three.js
spiegel van https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js - WebGPU - Skinning Instancing</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 - Skinning Instancing
		</div>

		<script async src="https://unpkg.com/[email protected]/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 { mix, range, color, oscSine, timerLocal } from 'three/nodes';

			import { FBXLoader } from 'three/addons/loaders/FBXLoader.js';

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

			let camera, scene, renderer;

			let mixer, clock;

			init();

			function init() {

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

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

					throw new Error( 'No WebGPU support' );

				}

				camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 0.01, 100 );
				camera.position.set( 1, 2, 3 );

				scene = new THREE.Scene();
				camera.lookAt( 0, 1, 0 );

				clock = new THREE.Clock();

				//lights

				const centerLight = new THREE.PointLight( 0xff9900, 1, 100 );
				centerLight.position.y = 4.5;
				centerLight.position.z = - 2;
				centerLight.power = 1700;
				scene.add( centerLight );

				const cameraLight = new THREE.PointLight( 0x0099ff, 1, 100 );
				cameraLight.power = 1700;
				camera.add( cameraLight );
				scene.add( camera );

				const loader = new FBXLoader();
				loader.load( 'models/fbx/Samba Dancing.fbx', ( object ) => {

					object.scale.setScalar( .01 );

					mixer = new THREE.AnimationMixer( object );

					const action = mixer.clipAction( object.animations[ 0 ] );
					action.play();

					const instanceCount = 30;
					const dummy = new THREE.Object3D();

					object.traverse( ( child ) => {

						if ( child.isMesh ) {

							const oscNode = oscSine( timerLocal( .1 ) );

							// random colors between instances from 0x000000 to 0xFFFFFF
							const randomColors = range( new THREE.Color( 0x000000 ), new THREE.Color( 0xFFFFFF ) );

							// random [ 0, 1 ] values between instances
							const randomMetalness = range( 0, 1 );

							child.material = new Nodes.MeshStandardNodeMaterial();
							child.material.roughness = .1;
							child.material.metalnessNode = mix( 0.0, randomMetalness, oscNode );
							child.material.colorNode = mix( color( 0xFFFFFF ), randomColors, oscNode );

							child.isInstancedMesh = true;
							child.instanceMatrix = new THREE.InstancedBufferAttribute( new Float32Array( instanceCount * 16 ), 16 );
							child.count = instanceCount;

							for ( let i = 0; i < instanceCount; i ++ ) {

								dummy.position.x = - 200 + ( ( i % 5 ) * 70 );
								dummy.position.z = Math.floor( i / 5 ) * - 200;

								dummy.updateMatrix();

								dummy.matrix.toArray( child.instanceMatrix.array, i * 16 );

							}

						}

					} );

					scene.add( object );

				} );

				//renderer

				renderer = new WebGPURenderer();
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.setAnimationLoop( animate );
				renderer.outputEncoding = THREE.sRGBEncoding;
				renderer.toneMappingNode = new Nodes.ToneMappingNode( THREE.LinearToneMapping, .17 );
				document.body.appendChild( renderer.domElement );

				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 );

				renderer.render( scene, camera );

			}

		</script>
	</body>
</html>