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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 - raging sea</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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+ <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 webgpu</a> - raging sea
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+ <br>
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+ Based on <a href="https://threejs-journey.com/lessons/raging-sea" target="_blank" rel="noopener">Three.js Journey</a> lesson
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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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+
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+ import * as THREE from 'three';
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+ import { float, mx_noise_float, loop, color, positionLocal, sin, vec2, vec3, mul, timerLocal, uniform, tslFn, modelNormalMatrix } from 'three/tsl';
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+
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+ import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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+ import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
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+
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+ let camera, scene, renderer, 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( 50, window.innerWidth / window.innerHeight, 0.1, 10 );
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+ camera.position.set( 1.25, 1.25, 1.25 );
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+
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+ scene = new THREE.Scene();
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+
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+ // lights
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+
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+ const directionalLight = new THREE.DirectionalLight( '#ffffff', 3 );
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+ directionalLight.position.set( - 4, 2, 0 );
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+ scene.add( directionalLight );
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+
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+ // material
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+
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+ const material = new THREE.MeshStandardNodeMaterial( { color: '#271442', roughness: 0.15 } );
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+
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+ const emissiveColor = uniform( color( '#ff0a81' ) );
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+ const emissiveLow = uniform( - 0.25 );
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+ const emissiveHigh = uniform( 0.2 );
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+ const emissivePower = uniform( 7 );
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+ const largeWavesFrequency = uniform( vec2( 3, 1 ) );
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+ const largeWavesSpeed = uniform( 1.25 );
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+ const largeWavesMultiplier = uniform( 0.15 );
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+ const smallWavesIterations = uniform( 3 );
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+ const smallWavesFrequency = uniform( 2 );
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+ const smallWavesSpeed = uniform( 0.3 );
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+ const smallWavesMultiplier = uniform( 0.18 );
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+ const normalComputeShift = uniform( 0.01 );
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+
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+ // TSL functions
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+
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+ const wavesElevation = tslFn( ( [ position ] ) => {
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+
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+ const time = timerLocal();
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+
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+ // large waves
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+
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+ const elevation = mul(
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+ sin( position.x.mul( largeWavesFrequency.x ).add( time.mul( largeWavesSpeed ) ) ),
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+ sin( position.z.mul( largeWavesFrequency.y ).add( time.mul( largeWavesSpeed ) ) ),
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+ largeWavesMultiplier
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+ ).toVar();
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+
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+ loop( { start: float( 1 ), end: smallWavesIterations.add( 1 ) }, ( { i } ) => {
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+
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+ const noiseInput = vec3(
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+ position.xz
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+ .add( 2 ) // avoids a-hole pattern
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+ .mul( smallWavesFrequency )
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+ .mul( i ),
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+ time.mul( smallWavesSpeed )
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+ );
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+
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+ const wave = mx_noise_float( noiseInput, 1, 0 )
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+ .mul( smallWavesMultiplier )
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+ .div( i )
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+ .abs();
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+
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+ elevation.subAssign( wave );
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+
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+ } );
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+
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+ return elevation;
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+
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+ } );
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+
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+ // position
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+
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+ const elevation = wavesElevation( positionLocal );
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+ const position = positionLocal.add( vec3( 0, elevation, 0 ) );
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+
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+ material.positionNode = position;
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+
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+ // normals
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+
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+ let positionA = positionLocal.add( vec3( normalComputeShift, 0, 0 ) );
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+ let positionB = positionLocal.add( vec3( 0, 0, normalComputeShift.negate() ) );
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+
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+ positionA = positionA.add( vec3( 0, wavesElevation( positionA ), 0 ) );
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+ positionB = positionB.add( vec3( 0, wavesElevation( positionB ), 0 ) );
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+
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+ const toA = positionA.sub( position ).normalize();
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+ const toB = positionB.sub( position ).normalize();
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+ const normal = toA.cross( toB );
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+
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+ material.normalNode = modelNormalMatrix.mul( normal );
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+
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+ // emissive
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+
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+ const emissive = elevation.remap( emissiveHigh, emissiveLow ).pow( emissivePower );
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+ material.emissiveNode = emissiveColor.mul( emissive );
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+
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+ // mesh
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+
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+ const geometry = new THREE.PlaneGeometry( 2, 2, 256, 256 );
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+ geometry.rotateX( - Math.PI * 0.5 );
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+ const mesh = new THREE.Mesh( geometry, material );
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+ scene.add( mesh );
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+
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+ // debug
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+
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+ const gui = new GUI();
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+
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+ gui.addColor( { color: material.color.getHex( THREE.SRGBColorSpace ) }, 'color' ).name( 'color' ).onChange( value => material.color.set( value ) );
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+ gui.add( material, 'roughness', 0, 1, 0.001 );
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+
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+ const colorGui = gui.addFolder( 'emissive' );
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+ colorGui.addColor( { color: emissiveColor.value.getHex( THREE.SRGBColorSpace ) }, 'color' ).name( 'color' ).onChange( value => emissiveColor.value.set( value ) );
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+ colorGui.add( emissiveLow, 'value', - 1, 0, 0.001 ).name( 'low' );
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+ colorGui.add( emissiveHigh, 'value', 0, 1, 0.001 ).name( 'high' );
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+ colorGui.add( emissivePower, 'value', 1, 10, 1 ).name( 'power' );
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+
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+ const wavesGui = gui.addFolder( 'waves' );
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+ wavesGui.add( largeWavesSpeed, 'value', 0, 5 ).name( 'largeSpeed' );
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+ wavesGui.add( largeWavesMultiplier, 'value', 0, 1 ).name( 'largeMultiplier' );
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+ wavesGui.add( largeWavesFrequency.value, 'x', 0, 10 ).name( 'largeFrequencyX' );
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+ wavesGui.add( largeWavesFrequency.value, 'y', 0, 10 ).name( 'largeFrequencyY' );
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+ wavesGui.add( smallWavesIterations, 'value', 0, 5, 1 ).name( 'smallIterations' );
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+ wavesGui.add( smallWavesFrequency, 'value', 0, 10 ).name( 'smallFrequency' );
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+ wavesGui.add( smallWavesSpeed, 'value', 0, 1 ).name( 'smallSpeed' );
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+ wavesGui.add( smallWavesMultiplier, 'value', 0, 1 ).name( 'smallMultiplier' );
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+ wavesGui.add( normalComputeShift, 'value', 0, 0.1, 0.0001 ).name( 'normalComputeShift' );
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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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+ document.body.appendChild( renderer.domElement );
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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.target.y = - 0.25;
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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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+
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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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+ async 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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Bruno Simon
