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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 - async node compilation</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="example.css">
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+ <style>
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+ #stats {
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+ position: fixed;
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+ top: 80px;
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+ left: 20px;
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+ background: rgba(0,0,0,0.7);
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+ color: #fff;
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+ padding: 10px 15px;
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+ font-family: monospace;
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+ font-size: 12px;
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+ border-radius: 4px;
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+ z-index: 100;
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+ min-width: 220px;
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+ }
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+ #stats .label { color: #888; }
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+ #stats .value { color: #0f0; font-weight: bold; }
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+ #stats .value.bad { color: #f55; }
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+ </style>
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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" class="logo-link"></a>
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+
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+ <div class="title-wrapper">
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+ <a href="https://threejs.org/" target="_blank" rel="noopener">three.js</a><span>Async Node Compilation</span>
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+ </div>
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+
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+ <small id="description">NodeMaterial shaders compile asynchronously without blocking the render loop. Animation stays smooth while <span id="materialCount">256</span> unique TSL materials build in the background.</small>
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+ </div>
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+
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+ <div id="stats">
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+ <div><span class="label">Longest frame: </span><span id="longestFrame" class="value">-</span></div>
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+ <div><span class="label">Meshes added: </span><span id="meshCount" class="value">0 / 256</span></div>
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+ <div><span class="label">Mode: </span><span id="compileMode" class="value">-</span></div>
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+ </div>
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+
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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/webgpu": "../build/three.webgpu.js",
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+ "three/tsl": "../build/three.tsl.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/webgpu';
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+ import { uv, float, vec3, hash, mx_noise_vec3, mx_worley_noise_vec3, mx_cell_noise_float, mx_fractal_noise_vec3 } from 'three/tsl';
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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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+ let MESH_COUNT = 256;
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+ let GRID_SIZE = 16;
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+ const ADD_DELAY = 1000;
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+
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+ let camera, scene, renderer;
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+ let sphere;
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+ let gui;
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+
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+ // Frame timing
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+ let lastFrameTime = 0;
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+ let longestFrameTime = 0;
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+ let isTracking = false;
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+ let shouldStartTracking = false;
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+ let sphereStartTime = 0;
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+ let currentMode = '';
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+ let framesAfterComplete = 0;
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+ let testDone = false;
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+ let meshGroup = null;
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+
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+ const longestFrameEl = document.getElementById( 'longestFrame' );
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+ const meshCountEl = document.getElementById( 'meshCount' );
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+ const compileModeEl = document.getElementById( 'compileMode' );
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+
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+ const params = {
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+ withoutCompile: function () {
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+
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+ window.location.href = window.location.pathname + '?mode=no-compile';
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+
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+ },
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+ withCompileAsync: function () {
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+
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+ window.location.href = window.location.pathname + '?mode=compile-async';
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+
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+ }
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+ };
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+
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+ init();
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+
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+ async function init() {
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+
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+ // GUI
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+ gui = new GUI();
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+ gui.add( params, 'withoutCompile' ).name( 'Build on render' );
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+ gui.add( params, 'withCompileAsync' ).name( 'Pre-build (compileAsync)' );
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+
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+ window.addEventListener( 'resize', onWindowResize );
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+
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+ // Orthographic camera
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+ const aspect = window.innerWidth / window.innerHeight;
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+ const frustumSize = 20;
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+ camera = new THREE.OrthographicCamera(
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+ frustumSize * aspect / - 2,
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+ frustumSize * aspect / 2,
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+ frustumSize / 2,
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+ frustumSize / - 2,
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+ 0.1,
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+ 100
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+ );
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+ camera.position.set( 0, 0, 20 );
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+ camera.lookAt( 0, 0, 0 );
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+
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+ scene = new THREE.Scene();
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+ scene.background = new THREE.Color( 0x111111 );
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+
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+ // Create animated sphere
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+ const sphereGeometry = new THREE.SphereGeometry( 0.5, 32, 32 );
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+ const sphereMaterial = new THREE.MeshNormalMaterial();
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+ sphere = new THREE.Mesh( sphereGeometry, sphereMaterial );
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+ scene.add( sphere );
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+
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+ // Renderer
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+ renderer = new THREE.WebGPURenderer( { antialias: true } );
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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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+ await renderer.init();
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+
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+ // Reduce mesh count for WebGL (slower compilation)
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+ if ( renderer.backend.isWebGLBackend ) {
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+
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+ MESH_COUNT = 64;
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+ GRID_SIZE = 8;
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+ document.getElementById( 'materialCount' ).textContent = '64';
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+ meshCountEl.textContent = '0 / 64';
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+
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+ }
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+
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+ // Get mode from URL
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+ const urlParams = new URLSearchParams( window.location.search );
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+ const mode = urlParams.get( 'mode' ) || 'compile-async';
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+
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+ const modeLabel = mode === 'compile-async' ? 'Pre-build (compileAsync)' : 'Build on render';
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+ compileModeEl.textContent = modeLabel;
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+
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+ // Start sphere animation
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+ sphereStartTime = performance.now();
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+
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+ // Schedule mesh addition after delay
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+ setTimeout( () => addMeshes( mode ), ADD_DELAY );
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+
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+ }
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+
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+ function createUniqueMaterial( index ) {
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+
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+ const material = new THREE.MeshBasicNodeMaterial();
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+
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+ const seed = float( index * 0.1 + 1.0 );
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+ const scale = float( ( index % 5 ) + 2.0 );
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+ const uvNode = uv().mul( scale ).add( hash( float( index ) ) );
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+
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+ const noiseType = index % 4;
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+ let colorNode;
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+
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+ switch ( noiseType ) {
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+
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+ case 0:
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+ colorNode = mx_noise_vec3( uvNode.mul( seed ) ).mul( 0.5 ).add( 0.5 );
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+ break;
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+
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+ case 1:
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+ colorNode = mx_worley_noise_vec3( uvNode.mul( seed.mul( 0.5 ) ) );
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+ break;
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+
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+ case 2:
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+ const cellNoise = mx_cell_noise_float( uvNode.mul( seed ) );
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+ colorNode = vec3( cellNoise, cellNoise.mul( 0.7 ), cellNoise.mul( 0.4 ) );
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+ break;
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+
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+ case 3:
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+ colorNode = mx_fractal_noise_vec3( uvNode.mul( seed.mul( 0.3 ) ), float( 3 ), float( 2.0 ), float( 0.5 ) )
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+ .mul( 0.5 ).add( 0.5 );
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+ break;
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+
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+ }
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+
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+ const tintR = hash( float( index * 3 ) );
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+ const tintG = hash( float( index * 3 + 1 ) );
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+ const tintB = hash( float( index * 3 + 2 ) );
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+ const tint = vec3( tintR, tintG, tintB ).mul( 0.3 ).add( 0.7 );
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+
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+ material.colorNode = colorNode.mul( tint );
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+
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+ return material;
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+
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+ }
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+
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+ async function addMeshes( mode ) {
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+
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+ const geometry = new THREE.PlaneGeometry( 0.9, 0.9 );
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+ const startX = - ( GRID_SIZE - 1 ) / 2;
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+ const startY = - ( GRID_SIZE - 1 ) / 2;
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+
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+ meshGroup = new THREE.Group();
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+
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+ for ( let i = 0; i < MESH_COUNT; i ++ ) {
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+
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+ const material = createUniqueMaterial( i );
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+ const mesh = new THREE.Mesh( geometry, material );
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+
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+ const col = i % GRID_SIZE;
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+ const row = Math.floor( i / GRID_SIZE );
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+
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+ mesh.position.x = startX + col;
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+ mesh.position.y = startY + row;
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+
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+ meshGroup.add( mesh );
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+
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+ }
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+
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+ currentMode = mode;
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+
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+ if ( mode === 'compile-async' ) {
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+
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+ // Pre-compile all meshes before adding to scene
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+ // Start tracking BEFORE compile to measure longest frame during compile
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+ shouldStartTracking = true;
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+
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+ await renderer.compileAsync( meshGroup, camera, scene );
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+
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+ // Add all meshes at once (already compiled - should render instantly)
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+ scene.add( meshGroup );
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+ testDone = true;
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+
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+ } else {
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+
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+ // Add all meshes at once - renderer compiles on-demand
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+ // Meshes appear progressively as they compile
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+ scene.add( meshGroup );
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+
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+ // Start tracking on next animate() frame
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+ shouldStartTracking = true;
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+ testDone = 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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+ function finishTest() {
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+
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+ isTracking = false;
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+
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+ longestFrameEl.textContent = longestFrameTime.toFixed( 1 ) + ' ms';
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+ longestFrameEl.className = longestFrameTime > 100 ? 'value bad' : 'value';
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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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+ if ( ! renderer || ! camera ) return;
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+
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+ const aspect = window.innerWidth / window.innerHeight;
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+ const frustumSize = 12;
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+
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+ camera.left = frustumSize * aspect / - 2;
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+ camera.right = frustumSize * aspect / 2;
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+ camera.top = frustumSize / 2;
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+ camera.bottom = frustumSize / - 2;
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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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+ const now = performance.now();
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+
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+ // Initialize tracking on first frame after meshes added
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+ if ( shouldStartTracking ) {
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+
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+ shouldStartTracking = false;
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+ isTracking = true;
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+ lastFrameTime = now;
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+ longestFrameTime = 0;
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+ framesAfterComplete = 0;
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+
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+ }
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+
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+ // Track longest frame during test
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+ if ( isTracking && lastFrameTime > 0 && lastFrameTime !== now ) {
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+
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+ const frameTime = now - lastFrameTime;
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+ if ( frameTime > longestFrameTime ) {
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+
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+ longestFrameTime = frameTime;
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+
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+ }
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+
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+ }
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+
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+ lastFrameTime = now;
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+
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+ // Animate sphere left to right
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+ if ( sphere && sphereStartTime > 0 ) {
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+
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+ const elapsed = ( now - sphereStartTime ) / 1000;
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+ sphere.position.x = Math.sin( elapsed * 2 ) * 8;
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+
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+ }
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+
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+ renderer.render( scene, camera );
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+
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+ // Update mesh count display
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+ if ( meshGroup ) {
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+
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+ meshCountEl.textContent = meshGroup.children.length + ' / ' + MESH_COUNT;
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+
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+ }
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+
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+ // Finish test - wait a few frames after testDone to capture frame times
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+ if ( isTracking && testDone ) {
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+
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+ framesAfterComplete ++;
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+
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+ // Wait longer for deferred mode (meshes compile progressively)
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+ const framesToWait = currentMode === 'compile-async' ? 2 : 60;
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+
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+ if ( framesAfterComplete >= framesToWait ) {
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+
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+ finishTest();
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+
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+ }
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+
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+ }
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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>
|
Renaud Rohlinger
