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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 - 3d luts</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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+
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+ <body>
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+ <div id="info">
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+ <a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - 3D LUTs<br />
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+ Battle Damaged Sci-fi Helmet by
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+ <a href="https://sketchfab.com/theblueturtle_" target="_blank" rel="noopener">theblueturtle_</a><br />
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+ <a href="https://hdrihaven.com/hdri/?h=royal_esplanade" target="_blank" rel="noopener">Royal Esplanade</a> from <a href="https://hdrihaven.com/" target="_blank" rel="noopener">HDRI Haven</a><br />
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+ LUTs from <a href="https://www.rocketstock.com/free-after-effects-templates/35-free-luts-for-color-grading-videos/">RocketStock</a>, <a href="https://www.freepresets.com/product/free-luts-cinematic/">FreePresets.com</a>
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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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+ import * as THREE from 'three';
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+ import { pass, texture3D, uniform } from 'three/tsl';
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+
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+ import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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+ import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
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+ import { RGBELoader } from 'three/addons/loaders/RGBELoader.js';
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+ import { LUTCubeLoader } from 'three/addons/loaders/LUTCubeLoader.js';
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+ import { LUT3dlLoader } from 'three/addons/loaders/LUT3dlLoader.js';
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+ import { LUTImageLoader } from 'three/addons/loaders/LUTImageLoader.js';
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+ import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
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+
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+ const params = {
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+ lut: 'Bourbon 64.CUBE',
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+ intensity: 1
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+ };
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+
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+ const lutMap = {
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+ 'Bourbon 64.CUBE': null,
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+ 'Chemical 168.CUBE': null,
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+ 'Clayton 33.CUBE': null,
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+ 'Cubicle 99.CUBE': null,
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+ 'Remy 24.CUBE': null,
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+ 'Presetpro-Cinematic.3dl': null,
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+ 'NeutralLUT': null,
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+ 'B&WLUT': null,
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+ 'NightLUT': null
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+ };
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+
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+ let gui;
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+ let camera, scene, renderer;
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+ let postProcessing, lutPass;
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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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+ const container = document.createElement( 'div' );
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+ document.body.appendChild( container );
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+
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+ camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.25, 20 );
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+ camera.position.set( - 1.8, 0.6, 2.7 );
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+
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+ scene = new THREE.Scene();
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+
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+ new RGBELoader()
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+ .setPath( 'textures/equirectangular/' )
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+ .load( 'royal_esplanade_1k.hdr', function ( texture ) {
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+
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+ texture.mapping = THREE.EquirectangularReflectionMapping;
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+
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+ scene.background = texture;
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+ scene.environment = texture;
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+
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+ // model
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+
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+ const loader = new GLTFLoader().setPath( 'models/gltf/DamagedHelmet/glTF/' );
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+ loader.load( 'DamagedHelmet.gltf', function ( gltf ) {
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+
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+ scene.add( gltf.scene );
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+
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+ } );
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+
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+ } );
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+
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+ const lutCubeLoader = new LUTCubeLoader();
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+ const lutImageLoader = new LUTImageLoader();
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+ const lut3dlLoader = new LUT3dlLoader();
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+
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+ for ( const name in lutMap ) {
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+
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+ if ( /\.CUBE$/i.test( name ) ) {
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+
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+ lutMap[ name ] = lutCubeLoader.loadAsync( 'luts/' + name );
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+
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+ } else if ( /\LUT$/i.test( name ) ) {
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+
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+ lutMap[ name ] = lutImageLoader.loadAsync( `luts/${name}.png` );
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+
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+ } else {
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+
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+ lutMap[ name ] = lut3dlLoader.loadAsync( 'luts/' + name );
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+
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+ }
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+
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+ }
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+
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+ const pendings = Object.values( lutMap );
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+ await Promise.all( pendings );
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+
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+ for ( const name in lutMap ) {
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+
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+ lutMap[ name ] = await lutMap[ name ];
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+
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+ }
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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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+ renderer.toneMapping = THREE.NoToneMapping;
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+ renderer.outputColorSpace = THREE.LinearSRGBColorSpace;
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+ container.appendChild( renderer.domElement );
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+
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+ // postprocessing
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+
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+ postProcessing = new THREE.PostProcessing( renderer );
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+
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+ const scenePass = pass( scene, camera );
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+ const scenePassColor = scenePass.getTextureNode();
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+
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+ const outputPass = scenePassColor.toneMapping( THREE.ACESFilmicToneMapping ).linearTosRGB();
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+
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+ lutPass = outputPass.lut3D();
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+ lutPass.lutNode = texture3D( lutMap[ params.lut ] );
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+ lutPass.intensityNode = uniform( 1 );
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+
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+ postProcessing.outputNode = lutPass;
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+
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+ //
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+
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+ const controls = new OrbitControls( camera, renderer.domElement );
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+ controls.minDistance = 2;
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+ controls.maxDistance = 10;
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+ controls.target.set( 0, 0, - 0.2 );
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+ controls.update();
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+
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+ gui = new GUI();
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+ gui.width = 350;
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+ gui.add( params, 'lut', Object.keys( lutMap ) );
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+ gui.add( params, 'intensity' ).min( 0 ).max( 1 );
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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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+ //
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+
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+ function animate() {
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+
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+ lutPass.intensityNode.value = params.intensity;
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+
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+ if ( lutMap[ params.lut ] ) {
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+
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+ const lut = lutMap[ params.lut ];
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+ lutPass.lutNode.value = lut.texture3D;
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+ lutPass.size.value = lut.texture3D.image.width;
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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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+
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+ </body>
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+</html>
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Michael Herzog
