samien
/
three.js
mirror of https://github.com/mrdoob/three.js.git


			
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgpu - async node compilation</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<meta property="og:title" content="three.js webgpu - async node compilation">
		<meta property="og:type" content="website">
		<meta property="og:url" content="https://threejs.org/examples/webgpu_compile_async.html">
		<meta property="og:image" content="https://threejs.org/examples/screenshots/webgpu_compile_async.jpg">
		<link type="text/css" rel="stylesheet" href="example.css">
		<style>
			#stats {
				position: fixed;
				top: 80px;
				left: 20px;
				background: rgba(0,0,0,0.7);
				color: #fff;
				padding: 10px 15px;
				font-family: monospace;
				font-size: 12px;
				border-radius: 4px;
				z-index: 100;
				min-width: 220px;
			}
			#stats .label { color: #888; }
			#stats .value { color: #0f0; font-weight: bold; }
			#stats .value.bad { color: #f55; }
		</style>
	</head>
	<body>

		<div id="info">
			<a href="https://threejs.org/" target="_blank" rel="noopener" class="logo-link"></a>

			<div class="title-wrapper">
				<a href="https://threejs.org/" target="_blank" rel="noopener">three.js</a><span>Async Node Compilation</span>
			</div>

			<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>
		</div>

		<div id="stats">
			<div><span class="label">Longest frame: </span><span id="longestFrame" class="value">-</span></div>
			<div><span class="label">Meshes added: </span><span id="meshCount" class="value">0 / 256</span></div>
			<div><span class="label">Mode: </span><span id="compileMode" class="value">-</span></div>
		</div>


		<script type="importmap">
			{
				"imports": {
					"three": "../build/three.webgpu.js",
					"three/webgpu": "../build/three.webgpu.js",
					"three/tsl": "../build/three.tsl.js",
					"three/addons/": "./jsm/"
				}
			}
		</script>

		<script type="module">

			import * as THREE from 'three/webgpu';
			import { uv, float, vec3, hash, mx_noise_vec3, mx_worley_noise_vec3, mx_cell_noise_float, mx_fractal_noise_vec3 } from 'three/tsl';

			import { GUI } from 'three/addons/libs/lil-gui.module.min.js';

			let MESH_COUNT = 256;
			let GRID_SIZE = 16;
			const ADD_DELAY = 1000;

			let camera, scene, renderer;
			let sphere;
			let gui;

			// Frame timing
			let lastFrameTime = 0;
			let longestFrameTime = 0;
			let isTracking = false;
			let shouldStartTracking = false;
			let sphereStartTime = 0;
			let currentMode = '';
			let framesAfterComplete = 0;
			let testDone = false;
			let meshGroup = null;

			const longestFrameEl = document.getElementById( 'longestFrame' );
			const meshCountEl = document.getElementById( 'meshCount' );
			const compileModeEl = document.getElementById( 'compileMode' );

			const params = {
				withoutCompile: function () {

					window.location.href = window.location.pathname + '?mode=no-compile';

				},
				withCompileAsync: function () {

					window.location.href = window.location.pathname + '?mode=compile-async';

				}
			};

			init();

			async function init() {

				// GUI
				gui = new GUI();
				gui.add( params, 'withoutCompile' ).name( 'Build on render' );
				gui.add( params, 'withCompileAsync' ).name( 'Pre-build (compileAsync)' );

				window.addEventListener( 'resize', onWindowResize );

				// Orthographic camera
				const aspect = window.innerWidth / window.innerHeight;
				const frustumSize = 20;
				camera = new THREE.OrthographicCamera(
					frustumSize * aspect / - 2,
					frustumSize * aspect / 2,
					frustumSize / 2,
					frustumSize / - 2,
					0.1,
					100
				);
				camera.position.set( 0, 0, 20 );
				camera.lookAt( 0, 0, 0 );

				scene = new THREE.Scene();
				scene.background = new THREE.Color( 0x111111 );

				// Create animated sphere
				const sphereGeometry = new THREE.SphereGeometry( 0.5, 32, 32 );
				const sphereMaterial = new THREE.MeshNormalMaterial();
				sphere = new THREE.Mesh( sphereGeometry, sphereMaterial );
				scene.add( sphere );

				// Renderer
				renderer = new THREE.WebGPURenderer( { antialias: true } );
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.setAnimationLoop( animate );
				document.body.appendChild( renderer.domElement );

				await renderer.init();

				// Reduce mesh count for WebGL (slower compilation)
				if ( renderer.backend.isWebGLBackend ) {

					MESH_COUNT = 64;
					GRID_SIZE = 8;
					document.getElementById( 'materialCount' ).textContent = '64';
					meshCountEl.textContent = '0 / 64';

				}

				// Get mode from URL
				const urlParams = new URLSearchParams( window.location.search );
				const mode = urlParams.get( 'mode' ) || 'compile-async';

				const modeLabel = mode === 'compile-async' ? 'Pre-build (compileAsync)' : 'Build on render';
				compileModeEl.textContent = modeLabel;

				// Start sphere animation
				sphereStartTime = performance.now();

				// Schedule mesh addition after delay
				setTimeout( () => addMeshes( mode ), ADD_DELAY );

			}

			function createUniqueMaterial( index ) {

				const material = new THREE.MeshBasicNodeMaterial();

				const seed = float( index * 0.1 + 1.0 );
				const scale = float( ( index % 5 ) + 2.0 );
				const uvNode = uv().mul( scale ).add( hash( float( index ) ) );

				const noiseType = index % 4;
				let colorNode;

				switch ( noiseType ) {

					case 0:
						colorNode = mx_noise_vec3( uvNode.mul( seed ) ).mul( 0.5 ).add( 0.5 );
						break;

					case 1:
						colorNode = mx_worley_noise_vec3( uvNode.mul( seed.mul( 0.5 ) ) );
						break;

					case 2:
						const cellNoise = mx_cell_noise_float( uvNode.mul( seed ) );
						colorNode = vec3( cellNoise, cellNoise.mul( 0.7 ), cellNoise.mul( 0.4 ) );
						break;

					case 3:
						colorNode = mx_fractal_noise_vec3( uvNode.mul( seed.mul( 0.3 ) ), float( 3 ), float( 2.0 ), float( 0.5 ) )
							.mul( 0.5 ).add( 0.5 );
						break;

				}

				const tintR = hash( float( index * 3 ) );
				const tintG = hash( float( index * 3 + 1 ) );
				const tintB = hash( float( index * 3 + 2 ) );
				const tint = vec3( tintR, tintG, tintB ).mul( 0.3 ).add( 0.7 );

				material.colorNode = colorNode.mul( tint );

				return material;

			}

			async function addMeshes( mode ) {

				const geometry = new THREE.PlaneGeometry( 0.9, 0.9 );
				const startX = - ( GRID_SIZE - 1 ) / 2;
				const startY = - ( GRID_SIZE - 1 ) / 2;

				meshGroup = new THREE.Group();

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

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

					const col = i % GRID_SIZE;
					const row = Math.floor( i / GRID_SIZE );

					mesh.position.x = startX + col;
					mesh.position.y = startY + row;

					meshGroup.add( mesh );

				}

				currentMode = mode;

				if ( mode === 'compile-async' ) {

					// Pre-compile all meshes before adding to scene
					// Start tracking BEFORE compile to measure longest frame during compile
					shouldStartTracking = true;

					await renderer.compileAsync( meshGroup, camera, scene );

					// Add all meshes at once (already compiled - should render instantly)
					scene.add( meshGroup );
					testDone = true;

				} else {

					// Add all meshes at once - renderer compiles on-demand
					// Meshes appear progressively as they compile
					scene.add( meshGroup );

					// Start tracking on next animate() frame
					shouldStartTracking = true;
					testDone = true;

				}

			}

			function finishTest() {

				isTracking = false;

				longestFrameEl.textContent = longestFrameTime.toFixed( 1 ) + ' ms';
				longestFrameEl.className = longestFrameTime > 100 ? 'value bad' : 'value';

			}

			function onWindowResize() {

				if ( ! renderer || ! camera ) return;

				const aspect = window.innerWidth / window.innerHeight;
				const frustumSize = 12;

				camera.left = frustumSize * aspect / - 2;
				camera.right = frustumSize * aspect / 2;
				camera.top = frustumSize / 2;
				camera.bottom = frustumSize / - 2;
				camera.updateProjectionMatrix();

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

			}

			function animate() {

				const now = performance.now();

				// Initialize tracking on first frame after meshes added
				if ( shouldStartTracking ) {

					shouldStartTracking = false;
					isTracking = true;
					lastFrameTime = now;
					longestFrameTime = 0;
					framesAfterComplete = 0;

				}

				// Track longest frame during test
				if ( isTracking && lastFrameTime > 0 && lastFrameTime !== now ) {

					const frameTime = now - lastFrameTime;
					if ( frameTime > longestFrameTime ) {

						longestFrameTime = frameTime;

					}

				}

				lastFrameTime = now;

				// Animate sphere left to right
				if ( sphere && sphereStartTime > 0 ) {

					const elapsed = ( now - sphereStartTime ) / 1000;
					sphere.position.x = Math.sin( elapsed * 2 ) * 8;

				}

				renderer.render( scene, camera );

				// Update mesh count display
				if ( meshGroup ) {

					meshCountEl.textContent = meshGroup.children.length + ' / ' + MESH_COUNT;

				}

				// Finish test - wait a few frames after testDone to capture frame times
				if ( isTracking && testDone ) {

					framesAfterComplete ++;

					// Wait longer for deferred mode (meshes compile progressively)
					const framesToWait = currentMode === 'compile-async' ? 2 : 60;

					if ( framesAfterComplete >= framesToWait ) {

						finishTest();

					}

				}

			}

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