examples/webgpu_cubemap_adjustments.html

<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgpu - cubemap adjustments</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<link type="text/css" rel="stylesheet" href="main.css">
	</head>
	<body>

		<div id="info">
			<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - Env. Adjustments<br />
			Battle Damaged Sci-fi Helmet by
			<a href="https://sketchfab.com/theblueturtle_" target="_blank" rel="noopener">theblueturtle_</a><br />
		</div>

		<!-- Import maps polyfill -->
		<!-- Remove this when import maps will be widely supported -->
		<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>

		<script type="importmap">
			{
				"imports": {
					"three": "../build/three.module.js",
					"three/addons/": "./jsm/",
					"three/nodes": "./jsm/nodes/Nodes.js"
				}
			}
		</script>

		<script type="module">

			import * as THREE from 'three';
			import * as Nodes from 'three/nodes';

			import { uniform, mix, cubeTexture, mul, reference, add, positionWorld, normalWorld, modelWorldMatrix, transformDirection, saturate, saturation, hue, reflectVector, context } from 'three/nodes';

			import WebGPU from 'three/addons/capabilities/WebGPU.js';
			import WebGPURenderer from 'three/addons/renderers/webgpu/WebGPURenderer.js';

			import { RGBMLoader } from 'three/addons/loaders/RGBMLoader.js';

			import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
			import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';

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

			let camera, scene, renderer;

			init().then( render ).catch( error );

			async function init() {

				if ( WebGPU.isAvailable() === false ) {

					document.body.appendChild( WebGPU.getErrorMessage() );

					throw new Error( 'No WebGPU support' );

				}

				const container = document.createElement( 'div' );
				document.body.appendChild( container );

				const initialDistance = 2;

				camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.25, 20 );
				camera.position.set( - 1.8 * initialDistance, 0.6 * initialDistance, 2.7 * initialDistance );

				scene = new THREE.Scene();

				// cube textures

				const rgbmUrls = [ 'px.png', 'nx.png', 'py.png', 'ny.png', 'pz.png', 'nz.png' ];
				const cube1Texture = new RGBMLoader()
					.setMaxRange( 16 )
					.setPath( './textures/cube/pisaRGBM16/' )
					.loadCubemap( rgbmUrls );

				cube1Texture.generateMipmaps = true;
				cube1Texture.minFilter = THREE.LinearMipmapLinearFilter;

				const cube2Urls = [ 'posx.jpg', 'negx.jpg', 'posy.jpg', 'negy.jpg', 'posz.jpg', 'negz.jpg' ];
				const cube2Texture = new THREE.CubeTextureLoader()
					.setPath( './textures/cube/Park2/' )
					.load( cube2Urls );

				cube2Texture.generateMipmaps = true;
				cube2Texture.minFilter = THREE.LinearMipmapLinearFilter;

				// nodes and environment

				const adjustments = {
					mix: 0,
					procedural: 0,
					intensity: 1,
					hue: 0,
					saturation: 1
				};

				const mixNode = reference( 'mix', 'float', adjustments );
				const proceduralNode = reference( 'procedural', 'float', adjustments );
				const intensityNode = reference( 'intensity', 'float', adjustments );
				const hueNode = reference( 'hue', 'float', adjustments );
				const saturationNode = reference( 'saturation', 'float', adjustments );

				const rotateY1Matrix = new THREE.Matrix4();
				const rotateY2Matrix = new THREE.Matrix4();

				const getEnvironmentNode = ( reflectNode ) => {

					const custom1UV = mul( reflectNode.xyz, uniform( rotateY1Matrix ) );
					const custom2UV = mul( reflectNode.xyz, uniform( rotateY2Matrix ) );

					const mixCubeMaps = mix( cubeTexture( cube1Texture, custom1UV ), cubeTexture( cube2Texture, custom2UV ), saturate( add( positionWorld.y, mixNode ) ) );
					const proceduralEnv = mix( mixCubeMaps, normalWorld, proceduralNode );
					const intensityFilter = mul( proceduralEnv, intensityNode );
					const hueFilter = hue( intensityFilter, hueNode );

					return saturation( hueFilter, saturationNode );

				};

				const blurNode = uniform( 0 );

				scene.environmentNode = getEnvironmentNode( reflectVector );

				scene.backgroundNode = context( getEnvironmentNode( transformDirection( positionWorld, modelWorldMatrix ) ), {
					levelNode: blurNode // @TODO: currently it uses mipmaps value, I think it should be replaced for [0,1]
				} );

				// scene objects

				const loader = new GLTFLoader().setPath( 'models/gltf/DamagedHelmet/glTF/' );
				loader.load( 'DamagedHelmet.gltf', function ( gltf ) {

					scene.add( gltf.scene );

					render();

				} );

				const sphereGeometry = new THREE.SphereGeometry( .5, 64, 32 );

				const sphereRightView = new THREE.Mesh( sphereGeometry, new THREE.MeshStandardMaterial( { roughness: 0, metalness: 1 } ) );
				sphereRightView.position.x += 2;

				const sphereLeftView = new THREE.Mesh( sphereGeometry, new THREE.MeshStandardMaterial( { roughness: 1, metalness: 1 } ) );
				sphereLeftView.position.x -= 2;

				scene.add( sphereLeftView );
				scene.add( sphereRightView );

				// renderer and controls

				renderer = new WebGPURenderer();
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.toneMappingNode = new Nodes.ToneMappingNode( THREE.LinearToneMapping, 1 );
				renderer.outputEncoding = THREE.sRGBEncoding;
				container.appendChild( renderer.domElement );

				const controls = new OrbitControls( camera, renderer.domElement );
				controls.minDistance = 2;
				controls.maxDistance = 10;

				window.addEventListener( 'resize', onWindowResize );

				// gui

				const gui = new GUI();

				gui.add( { blurBackground: blurNode.value }, 'blurBackground', 0, 10, 0.01 ).onChange( value => {

					blurNode.value = value;

				} );
				gui.add( { offsetCube1: 0 }, 'offsetCube1', 0, Math.PI * 2, 0.01 ).onChange( value => {

					rotateY1Matrix.makeRotationY( value );

				} );
				gui.add( { offsetCube2: 0 }, 'offsetCube2', 0, Math.PI * 2, 0.01 ).onChange( value => {

					rotateY2Matrix.makeRotationY( value );

				} );
				gui.add( adjustments, 'mix', - 1, 2, 0.01 );
				gui.add( adjustments, 'procedural', 0, 1, 0.01 );
				gui.add( adjustments, 'intensity', 0, 5, 0.01 );
				gui.add( adjustments, 'hue', 0, Math.PI * 2, 0.01 );
				gui.add( adjustments, 'saturation', 0, 2, 0.01 );

				return renderer.init();

			}

			function onWindowResize() {

				camera.aspect = window.innerWidth / window.innerHeight;
				camera.updateProjectionMatrix();

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

			}

			//

			function render() {

				requestAnimationFrame( render );

				renderer.render( scene, camera );

			}

			function error( error ) {

				console.error( error );

			}

		</script>

	</body>
</html>