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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 - motion blur</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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+ <body>
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+
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+ <div id="info">
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+ <a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> webgpu - motion blur
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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/tsl": "../build/three.webgpu.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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+ import { pass, texture, motionBlur, uniform, output, mrt, mix, velocity, uv, viewportTopLeft } from 'three/tsl';
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+
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+ import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
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+
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+ import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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+
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+ import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
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+
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+ import Stats from 'three/addons/libs/stats.module.js';
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+
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+ let camera, scene, renderer;
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+ let boxLeft, boxRight, model, mixer, clock;
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+ let postProcessing;
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+ let controls;
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+ let stats;
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+
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+ const params = {
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+ speed: 1.0
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+ };
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+
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+ init();
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+
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+ function init() {
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+
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+ camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 0.25, 30 );
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+ camera.position.set( 0, 1.5, 4.5 );
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+
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+ scene = new THREE.Scene();
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+ scene.fog = new THREE.Fog( 0x0487e2, 7, 25 );
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+
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+ const sunLight = new THREE.DirectionalLight( 0xFFE499, 5 );
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+ sunLight.castShadow = true;
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+ sunLight.shadow.camera.near = .1;
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+ sunLight.shadow.camera.far = 10;
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+ sunLight.shadow.camera.right = 2;
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+ sunLight.shadow.camera.left = - 2;
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+ sunLight.shadow.camera.top = 2;
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+ sunLight.shadow.camera.bottom = - 2;
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+ sunLight.shadow.mapSize.width = 2048;
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+ sunLight.shadow.mapSize.height = 2048;
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+ sunLight.shadow.bias = - 0.001;
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+ sunLight.position.set( 4, 4, 2 );
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+
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+ const waterAmbientLight = new THREE.HemisphereLight( 0x333366, 0x74ccf4, 5 );
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+ const skyAmbientLight = new THREE.HemisphereLight( 0x74ccf4, 0, 1 );
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+
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+ scene.add( sunLight );
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+ scene.add( skyAmbientLight );
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+ scene.add( waterAmbientLight );
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+
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+ clock = new THREE.Clock();
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+
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+ // animated model
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+
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+ const loader = new GLTFLoader();
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+ loader.load( 'models/gltf/Xbot.glb', function ( gltf ) {
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+
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+ model = gltf.scene;
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+
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+ model.rotation.y = Math.PI / 2;
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+
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+ model.traverse( function ( child ) {
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+
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+ if ( child.isMesh ) {
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+
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+ child.castShadow = true;
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+ child.receiveShadow = true;
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+
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+ }
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+
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+ } );
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+
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+ mixer = new THREE.AnimationMixer( model );
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+
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+ const action = mixer.clipAction( gltf.animations[ 3 ] );
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+ action.play();
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+
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+ scene.add( model );
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+
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+ } );
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+
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+ // textures
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+
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+ const textureLoader = new THREE.TextureLoader();
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+
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+ const floorColor = textureLoader.load( 'textures/floors/FloorsCheckerboard_S_Diffuse.jpg' );
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+ floorColor.wrapS = THREE.RepeatWrapping;
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+ floorColor.wrapT = THREE.RepeatWrapping;
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+ floorColor.colorSpace = THREE.SRGBColorSpace;
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+
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+ const floorNormal = textureLoader.load( 'textures/floors/FloorsCheckerboard_S_Normal.jpg' );
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+ floorNormal.wrapS = THREE.RepeatWrapping;
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+ floorNormal.wrapT = THREE.RepeatWrapping;
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+
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+ // floor
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+
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+ const floorUV = uv().mul( 5 );
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+
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+ const floorMaterial = new THREE.MeshPhongNodeMaterial();
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+ floorMaterial.colorNode = texture( floorColor, floorUV );
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+
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+ const floor = new THREE.Mesh( new THREE.BoxGeometry( 15, .001, 15 ), floorMaterial );
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+ floor.receiveShadow = true;
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+
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+ floor.position.set( 0, 0, 0 );
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+ scene.add( floor );
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+
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+ const walls = new THREE.Mesh( new THREE.BoxGeometry( 15, 15, 15 ), new THREE.MeshPhongNodeMaterial( { colorNode: floorMaterial.colorNode, side: THREE.BackSide } ) );
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+ scene.add( walls );
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+
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+ const map = new THREE.TextureLoader().load( 'textures/uv_grid_opengl.jpg' );
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+ map.colorSpace = THREE.SRGBColorSpace;
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+
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+ const geometry = new THREE.TorusGeometry( .8 );
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+ const material = new THREE.MeshBasicMaterial( { map } );
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+
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+ boxRight = new THREE.Mesh( geometry, material );
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+ boxRight.position.set( 3.5, 1.5, - 4 );
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+ scene.add( boxRight );
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+
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+ boxLeft = new THREE.Mesh( geometry, material );
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+ boxLeft.position.set( - 3.5, 1.5, - 4 );
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+ scene.add( boxLeft );
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+
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+ // renderer
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+
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+ renderer = new THREE.WebGPURenderer();
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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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+ document.body.appendChild( renderer.domElement );
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+
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+ stats = new Stats();
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+ document.body.appendChild( stats.dom );
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+
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+ controls = new OrbitControls( camera, renderer.domElement );
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+ controls.minDistance = 1;
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+ controls.maxDistance = 10;
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+ controls.maxPolarAngle = Math.PI / 2;
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+ controls.autoRotate = true;
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+ controls.autoRotateSpeed = 1;
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+ controls.target.set( 0, 1, 0 );
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+ controls.enableDamping = true;
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+ controls.dampingFactor = 0.05;
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+ controls.update();
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+
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+ // post-processing
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+
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+ const blurAmount = uniform( 1 );
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+ const showVelocity = uniform( 0 );
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+
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+ const scenePass = pass( scene, camera );
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+
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+ scenePass.setMRT( mrt( {
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+ output,
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+ velocity
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+ } ) );
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+
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+ const beauty = scenePass.getTextureNode();
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+ const vel = scenePass.getTextureNode( 'velocity' ).mul( blurAmount );
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+
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+ const mBlur = motionBlur( beauty, vel );
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+
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+ const vignet = viewportTopLeft.distance( .5 ).remap( .6, 1 ).mul( 2 ).clamp().oneMinus();
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+
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+ postProcessing = new THREE.PostProcessing( renderer );
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+ postProcessing.outputNode = mix( mBlur, vel, showVelocity ).mul( vignet );
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+
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+ //
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+
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+ const gui = new GUI();
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+ gui.title( 'Motion Blur Settings' );
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+ gui.add( controls, 'autoRotate' );
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+ gui.add( blurAmount, 'value', 0, 3 ).name( 'blur amount' );
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+ gui.add( params, 'speed', 0, 2 );
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+ gui.add( showVelocity, 'value', 0, 1 ).name( 'show velocity' );
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+
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+ //
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+
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+ window.addEventListener( 'resize', onWindowResize );
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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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+ stats.update();
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+
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+ controls.update();
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+
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+ const delta = clock.getDelta();
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+ const speed = params.speed;
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+
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+ boxRight.rotation.y += delta * 4 * speed;
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+ boxLeft.scale.setScalar( 1 + Math.sin( clock.elapsedTime * 10 * speed ) * .2 );
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+
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+ if ( model ) {
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+
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+ mixer.update( delta * speed );
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+
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+ }
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+
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+ postProcessing.render();
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+
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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
