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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 - height fog</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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+ </head>
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+ <body>
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+
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+ <div id="info" class="invert">
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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>Height Fog</span>
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+ </div>
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+
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+ <small>
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+ Exponential Height Fog with TSL.
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+ </small>
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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/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 { exponentialHeightFogFactor, uniform, fog, color } from 'three/tsl';
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+
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+ import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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+ import { Inspector } from 'three/addons/inspector/Inspector.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();
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+
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+ function init() {
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+
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+ camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 600 );
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+ camera.position.set( 20, 10, 25 );
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+
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+ scene = new THREE.Scene();
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+
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+ // height fog
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+
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+ const density = uniform( 0.04 );
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+ const height = uniform( 2 );
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+
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+ const fogFactor = exponentialHeightFogFactor( density, height );
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+
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+ scene.fogNode = fog( color( 0xffdfc1 ), fogFactor );
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+ scene.backgroundNode = color( 0xffdfc1 );
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+
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+ // meshes
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+
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+ const geometry = new THREE.BoxGeometry( 1, 25, 1 );
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+ const material = new THREE.MeshPhongNodeMaterial( { color: 0xcd959a } );
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+
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+ const mesh = new THREE.InstancedMesh( geometry, material, 100 );
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+ mesh.position.y = - 10;
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+ scene.add( mesh );
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+
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+ const dummy = new THREE.Object3D();
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+
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+ let index = 0;
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+
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+ for ( let i = 0; i < 10; i ++ ) {
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+
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+ for ( let j = 0; j < 10; j ++ ) {
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+
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+ dummy.position.x = - 18 + ( i * 4 );
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+ dummy.position.z = - 18 + ( j * 4 );
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+
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+ dummy.updateMatrix();
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+
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+ mesh.setMatrixAt( index ++, dummy.matrix );
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+
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+ }
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+
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+ }
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+
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+ // lights
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+
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+ const directionalLight = new THREE.DirectionalLight( 0xffc0cb, 2 );
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+ directionalLight.position.set( - 10, 10, 10 );
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+ scene.add( directionalLight );
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+
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+ const ambientLight = new THREE.AmbientLight( 0xcccccc );
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+ scene.add( ambientLight );
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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.inspector = new Inspector();
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+ document.body.appendChild( renderer.domElement );
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+
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+ // gui
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+
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+ const gui = renderer.inspector.createParameters( 'Fog Settings' );
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+
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+ gui.add( density, 'value', 0.001, 0.1 ).step( 0.0001 ).name( 'Density' );
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+ gui.add( height, 'value', - 5, 5 ).name( 'Height' );
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+
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+ // controls
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+
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+ controls = new OrbitControls( camera, renderer.domElement );
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+ controls.minDistance = 7;
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+ controls.maxDistance = 100;
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+ controls.maxPolarAngle = Math.PI / 2;
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+ controls.enableDamping = true;
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+
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+ window.addEventListener( 'resize', resize );
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+
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+ }
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+
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+ function resize() {
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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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+ function animate() {
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+
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+ controls.update();
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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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+ </script>
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+ </body>
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+</html>
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Michael Herzog
