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+<html lang="en">
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+ <head>
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+ <title>three.js - WebGPU - Particles</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 - Particles
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+ </div>
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+
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+ <script async src="https://unpkg.com/[email protected]/dist/es-module-shims.js"></script>
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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-nodes/": "./jsm/nodes/"
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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 * as Nodes from 'three-nodes/Nodes.js';
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+
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+ import { GUI } from './jsm/libs/lil-gui.module.min.js';
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+
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+ import { range, texture, mix, uv, mul, mod, rotateUV, color, max, min, div, saturate, positionWorld, invert, timerLocal } from 'three-nodes/Nodes.js';
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+
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+ import WebGPU from './jsm/capabilities/WebGPU.js';
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+ import WebGPURenderer from './jsm/renderers/webgpu/WebGPURenderer.js';
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+
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+ import { OrbitControls } from './jsm/controls/OrbitControls.js';
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+
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+ let camera, scene, renderer;
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+ let controls;
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+
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+ init().then( animate ).catch( error );
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+
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+ async function init() {
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+
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+ if ( WebGPU.isAvailable() === false ) {
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+
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+ document.body.appendChild( WebGPU.getErrorMessage() );
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+
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+ throw new Error( 'No WebGPU support' );
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+
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+ }
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+
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+ const { innerWidth, innerHeight } = window;
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+
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+ camera = new THREE.PerspectiveCamera( 60, innerWidth / innerHeight, 1, 5000 );
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+ camera.position.set( 1300, 500, 0 );
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+
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+ scene = new THREE.Scene();
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+ //scene.fogNode = new Nodes.FogRangeNode( Nodes.color( 0x0000ff ), Nodes.float( 1500 ), Nodes.float( 2100 ) );
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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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+ const map = textureLoader.load( 'textures/opengameart/smoke1.png' );
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+
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+ // create nodes
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+
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+ const lifeRange = range( .1, 1 );
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+ const offsetRange = range( new THREE.Vector3( - 2, 3, - 2 ), new THREE.Vector3( 2, 5, 2 ) );
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+
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+ const timer = timerLocal( .2, 1/*100000*/ ); // @TODO: need to work with 64-bit precision
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+
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+ const lifeTime = mod( mul( timer, lifeRange ), 1 );
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+ const scaleRange = range( .3, 2 );
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+ const rotateRange = range( .1, 4 );
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+
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+ const life = div( lifeTime, lifeRange );
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+
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+ const fakeLightEffect = max( .2, invert( positionWorld.y ) );
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+
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+ const textureNode = texture( map, rotateUV( uv(), mul( timer, rotateRange ) ) );
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+
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+ const opacityNode = mul( textureNode.a, invert( life ) );
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+
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+ const smokeColor = mix( color( 0x2c1501 ), color( 0x222222 ), saturate( mul( positionWorld.y, 3 ) ) );
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+
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+ // create particles
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+
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+ const smokeNodeMaterial = new Nodes.SpriteNodeMaterial();
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+ smokeNodeMaterial.colorNode = mul( mix( color( 0xf27d0c ), smokeColor, min( mul( life, 2.5 ), 1 ) ), fakeLightEffect );
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+ smokeNodeMaterial.opacityNode = opacityNode;
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+ smokeNodeMaterial.positionNode = mul( offsetRange, lifeTime );
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+ smokeNodeMaterial.scaleNode = mul( scaleRange, max( .3, lifeTime ) );
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+ smokeNodeMaterial.depthWrite = false;
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+ smokeNodeMaterial.transparent = true;
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+
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+ const smokeInstancedSprite = new THREE.Sprite( smokeNodeMaterial );
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+ smokeInstancedSprite.scale.setScalar( 400 );
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+ smokeInstancedSprite.isInstancedMesh = true;
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+ smokeInstancedSprite.count = 2000;
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+ scene.add( smokeInstancedSprite );
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+
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+ //
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+
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+ const fireNodeMaterial = new Nodes.SpriteNodeMaterial();
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+ fireNodeMaterial.colorNode = mix( color( 0xb72f17 ), color( 0xb72f17 ), life );
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+ fireNodeMaterial.positionNode = mul( range( new THREE.Vector3( - 1, 1, - 1 ), new THREE.Vector3( 1, 2, 1 ) ), lifeTime );
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+ fireNodeMaterial.scaleNode = smokeNodeMaterial.scaleNode;
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+ fireNodeMaterial.opacityNode = opacityNode;
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+ fireNodeMaterial.blending = THREE.AdditiveBlending;
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+ fireNodeMaterial.transparent = true;
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+ fireNodeMaterial.depthWrite = false;
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+
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+ const fireInstancedSprite = new THREE.Sprite( fireNodeMaterial );
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+ fireInstancedSprite.scale.setScalar( 400 );
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+ fireInstancedSprite.isInstancedMesh = true;
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+ fireInstancedSprite.count = 100;
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+ fireInstancedSprite.position.y = - 100;
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+ fireInstancedSprite.renderOrder = 1;
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+ scene.add( fireInstancedSprite );
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+
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+ //
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+
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+ const helper = new THREE.GridHelper( 3000, 40, 0x303030, 0x303030 );
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+ helper.material.colorNode = new Nodes.AttributeNode( 'color' );
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+ helper.position.y = - 75;
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+ scene.add( helper );
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+
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+ //
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+
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+ renderer = new WebGPURenderer();
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+ renderer.setPixelRatio( window.devicePixelRatio );
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+ document.body.appendChild( renderer.domElement );
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+
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+ //
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+
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+ controls = new OrbitControls( camera, renderer.domElement );
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+ controls.maxDistance = 2700;
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+ controls.target.set( 0, 500, 0 );
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+ controls.update();
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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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+ // gui
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+
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+ const gui = new GUI();
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+
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+ gui.add( timer, 'scale', 0, 1, 0.01 ).name( 'speed' );
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+
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+ return renderer.init();
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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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+ const { innerWidth, innerHeight } = window;
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+
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+ camera.aspect = innerWidth / innerHeight;
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+ camera.updateProjectionMatrix();
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+
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+ renderer.setSize( innerWidth, 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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+ requestAnimationFrame( animate );
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+ render();
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+
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+ }
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+
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+ function render() {
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+
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+ renderer.render( scene, camera );
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+
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+ }
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+
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+ function error( error ) {
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+
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+ console.error( error );
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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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