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@@ -6,13 +6,12 @@
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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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+
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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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+ <a href="https://threejs.org" target="_blank" rel="noopener">three.js webgpu</a> - post processing - 3D LUTs<br />
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+ Based on <a href="https://threejs-journey.com/lessons/coffee-smoke-shader" target="_blank" rel="noopener">Three.js Journey</a> lesson<br />
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+ Perlin noise texture from <a href="http://kitfox.com/projects/perlinNoiseMaker/" target="_blank" rel="noopener">Perlin Noise Maker</a>,
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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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@@ -30,12 +29,11 @@
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<script type="module">
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import * as THREE from 'three';
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- import { pass, texture3D, uniform, renderOutput } from 'three/tsl';
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+ import { mix, mul, oneMinus, positionLocal, smoothstep, texture, time, rotateUV, Fn, uv, vec2, vec3, vec4, pass, texture3D, uniform, renderOutput } from 'three/tsl';
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import { lut3D } from 'three/addons/tsl/display/Lut3DNode.js';
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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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@@ -58,41 +56,23 @@
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'NightLUT': null
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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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+ let camera, scene, renderer, postProcessing, controls, lutPass;
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init();
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async function init() {
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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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+ camera = new THREE.PerspectiveCamera( 25, window.innerWidth / window.innerHeight, 0.1, 100 );
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+ camera.position.set( 8, 10, 12 );
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scene = new THREE.Scene();
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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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+ // Loaders
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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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+ const gltfLoader = new GLTFLoader();
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+ const textureLoader = new THREE.TextureLoader();
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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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+ // LUTs
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const lutCubeLoader = new LUTCubeLoader();
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const lutImageLoader = new LUTImageLoader();
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@@ -125,12 +105,97 @@
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}
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- renderer = new THREE.WebGPURenderer();
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+ // baked model
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+
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+ gltfLoader.load(
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+ './models/gltf/coffeeMug.glb',
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+ ( gltf ) => {
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+
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+ gltf.scene.getObjectByName( 'baked' ).material.map.anisotropy = 8;
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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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+ // geometry
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+
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+ const smokeGeometry = new THREE.PlaneGeometry( 1, 1, 16, 64 );
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+ smokeGeometry.translate( 0, 0.5, 0 );
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+ smokeGeometry.scale( 1.5, 6, 1.5 );
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+
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+ // texture
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+
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+ const noiseTexture = textureLoader.load( './textures/noises/perlin/128x128.png' );
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+ noiseTexture.wrapS = THREE.RepeatWrapping;
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+ noiseTexture.wrapT = THREE.RepeatWrapping;
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+
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+ // material
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+
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+ const smokeMaterial = new THREE.MeshBasicNodeMaterial( { transparent: true, side: THREE.DoubleSide, depthWrite: false } );
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+
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+ // position
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+
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+ smokeMaterial.positionNode = Fn( () => {
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+
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+ // twist
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+
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+ const twistNoiseUv = vec2( 0.5, uv().y.mul( 0.2 ).sub( time.mul( 0.005 ) ).mod( 1 ) );
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+ const twist = texture( noiseTexture, twistNoiseUv ).r.mul( 10 );
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+ positionLocal.xz.assign( rotateUV( positionLocal.xz, twist, vec2( 0 ) ) );
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+
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+ // wind
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+
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+ const windOffset = vec2(
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+ texture( noiseTexture, vec2( 0.25, time.mul( 0.01 ) ).mod( 1 ) ).r.sub( 0.5 ),
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+ texture( noiseTexture, vec2( 0.75, time.mul( 0.01 ) ).mod( 1 ) ).r.sub( 0.5 ),
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+ ).mul( uv().y.pow( 2 ).mul( 10 ) );
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+ positionLocal.addAssign( windOffset );
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+
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+ return positionLocal;
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+
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+ } )();
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+
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+ // color
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+
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+ smokeMaterial.colorNode = Fn( () => {
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+
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+ // alpha
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+
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+ const alphaNoiseUv = uv().mul( vec2( 0.5, 0.3 ) ).add( vec2( 0, time.mul( 0.03 ).negate() ) );
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+ const alpha = mul(
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+
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+ // pattern
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+ texture( noiseTexture, alphaNoiseUv ).r.smoothstep( 0.4, 1 ),
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+
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+ // edges fade
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+ smoothstep( 0, 0.1, uv().x ),
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+ smoothstep( 0, 0.1, oneMinus( uv().x ) ),
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+ smoothstep( 0, 0.1, uv().y ),
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+ smoothstep( 0, 0.1, oneMinus( uv().y ) )
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+
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+ );
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+
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+ // color
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+
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+ const finalColor = mix( vec3( 0.6, 0.3, 0.2 ), vec3( 1, 1, 1 ), alpha.pow( 3 ) );
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+
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+ return vec4( finalColor, alpha );
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+
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+ } )();
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+
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+ // mesh
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+
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+ const smoke = new THREE.Mesh( smokeGeometry, smokeMaterial );
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+ smoke.position.y = 1.83;
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+ scene.add( smoke );
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+
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+ // renderer
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+
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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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- renderer.toneMapping = THREE.ACESFilmicToneMapping;
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- container.appendChild( renderer.domElement );
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+ document.body.appendChild( renderer.domElement );
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// post processing
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@@ -151,15 +216,17 @@
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postProcessing.outputNode = lutPass;
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- //
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+ // controls
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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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+ controls = new OrbitControls( camera, renderer.domElement );
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+ controls.enableDamping = true;
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+ controls.minDistance = 0.1;
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+ controls.maxDistance = 50;
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+ controls.target.y = 3;
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+
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+ // gui
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- gui = new GUI();
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+ const gui = new GUI();
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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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@@ -176,9 +243,9 @@
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}
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- //
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+ async function animate() {
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- function animate() {
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+ controls.update();
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lutPass.intensityNode.value = params.intensity;
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@@ -195,6 +262,5 @@
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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
