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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>threejs webgl - materials - equirectangular exr image based lighting</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="container"></div>
- <div id="info"><a href="https://threejs.org" target="_blank" rel="noopener">threejs</a> - Example of an IBL (Image based lighting) pipeline based around<br> equirectangular EXR lightprobe data. Created by <a href="https://github.com/richardmonette" target="_blank" rel="noopener">Richard Monette</a></div>
- <script type="importmap">
- {
- "imports": {
- "three": "../build/three.module.js",
- "three/addons/": "./jsm/"
- }
- }
- </script>
- <script type="module">
- import * as THREE from 'three';
- import Stats from 'three/addons/libs/stats.module.js';
- import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
- import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
- import { EXRLoader } from 'three/addons/loaders/EXRLoader.js';
- const params = {
- envMap: 'EXR',
- roughness: 0.0,
- metalness: 0.0,
- exposure: 1.0,
- debug: false,
- };
- let container, stats;
- let camera, scene, renderer, controls;
- let torusMesh, planeMesh;
- let pngCubeRenderTarget, exrCubeRenderTarget;
- let pngBackground, exrBackground;
- init();
- function init() {
- container = document.createElement( 'div' );
- document.body.appendChild( container );
- camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 1000 );
- camera.position.set( 0, 0, 120 );
- scene = new THREE.Scene();
- renderer = new THREE.WebGLRenderer();
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( window.innerWidth, window.innerHeight );
- renderer.setAnimationLoop( animate );
- container.appendChild( renderer.domElement );
- renderer.toneMapping = THREE.ACESFilmicToneMapping;
- //
- let geometry = new THREE.TorusKnotGeometry( 18, 8, 150, 20 );
- let material = new THREE.MeshStandardMaterial( {
- metalness: params.metalness,
- roughness: params.roughness,
- envMapIntensity: 1.0
- } );
- torusMesh = new THREE.Mesh( geometry, material );
- scene.add( torusMesh );
- geometry = new THREE.PlaneGeometry( 200, 200 );
- material = new THREE.MeshBasicMaterial();
- planeMesh = new THREE.Mesh( geometry, material );
- planeMesh.position.y = - 50;
- planeMesh.rotation.x = - Math.PI * 0.5;
- scene.add( planeMesh );
- THREE.DefaultLoadingManager.onLoad = function ( ) {
- pmremGenerator.dispose();
- };
- new EXRLoader().load( 'textures/piz_compressed.exr', function ( texture ) {
- texture.mapping = THREE.EquirectangularReflectionMapping;
- exrCubeRenderTarget = pmremGenerator.fromEquirectangular( texture );
- exrBackground = texture;
- } );
- new THREE.TextureLoader().load( 'textures/equirectangular.png', function ( texture ) {
- texture.mapping = THREE.EquirectangularReflectionMapping;
- texture.colorSpace = THREE.SRGBColorSpace;
- pngCubeRenderTarget = pmremGenerator.fromEquirectangular( texture );
- pngBackground = texture;
- } );
- const pmremGenerator = new THREE.PMREMGenerator( renderer );
- pmremGenerator.compileEquirectangularShader();
- stats = new Stats();
- container.appendChild( stats.dom );
- controls = new OrbitControls( camera, renderer.domElement );
- controls.minDistance = 50;
- controls.maxDistance = 300;
- window.addEventListener( 'resize', onWindowResize );
- const gui = new GUI();
- gui.add( params, 'envMap', [ 'EXR', 'PNG' ] );
- gui.add( params, 'roughness', 0, 1, 0.01 );
- gui.add( params, 'metalness', 0, 1, 0.01 );
- gui.add( params, 'exposure', 0, 2, 0.01 );
- gui.add( params, 'debug' );
- gui.open();
- }
- function onWindowResize() {
- const width = window.innerWidth;
- const height = window.innerHeight;
- camera.aspect = width / height;
- camera.updateProjectionMatrix();
- renderer.setSize( width, height );
- }
- function animate() {
- stats.begin();
- render();
- stats.end();
- }
- function render() {
- torusMesh.material.roughness = params.roughness;
- torusMesh.material.metalness = params.metalness;
- let newEnvMap = torusMesh.material.envMap;
- let background = scene.background;
- switch ( params.envMap ) {
- case 'EXR':
- newEnvMap = exrCubeRenderTarget ? exrCubeRenderTarget.texture : null;
- background = exrBackground;
- break;
- case 'PNG':
- newEnvMap = pngCubeRenderTarget ? pngCubeRenderTarget.texture : null;
- background = pngBackground;
- break;
- }
- if ( newEnvMap !== torusMesh.material.envMap ) {
- torusMesh.material.envMap = newEnvMap;
- torusMesh.material.needsUpdate = true;
- planeMesh.material.map = newEnvMap;
- planeMesh.material.needsUpdate = true;
- }
- torusMesh.rotation.y += 0.005;
- planeMesh.visible = params.debug;
- scene.background = background;
- renderer.toneMappingExposure = params.exposure;
- renderer.render( scene, camera );
- }
- </script>
- </body>
- </html>
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