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<!DOCTYPE html>
<html lang="en">
<head>
<title>threejs webgl - materials - hdr environment mapping</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> - High dynamic range (RGBE) Image-based Lighting (IBL)<br />using run-time generated pre-filtered roughness mipmaps (PMREM)<br/>
Created by Prashant Sharma and <a href="http://clara.io/" target="_blank" rel="noopener">Ben Houston</a>.
</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/"
}
}
</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 { HDRCubeTextureLoader } from 'three/addons/loaders/HDRCubeTextureLoader.js';
import { RGBMLoader } from 'three/addons/loaders/RGBMLoader.js';
import { DebugEnvironment } from 'three/addons/environments/DebugEnvironment.js';
const params = {
envMap: 'HDR',
roughness: 0.0,
metalness: 0.0,
exposure: 1.0,
debug: false
};
let container, stats;
let camera, scene, renderer, controls;
let torusMesh, planeMesh;
let generatedCubeRenderTarget, ldrCubeRenderTarget, hdrCubeRenderTarget, rgbmCubeRenderTarget;
let ldrCubeMap, hdrCubeMap, rgbmCubeMap;
init();
animate();
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();
scene.background = new THREE.Color( 0x000000 );
renderer = new THREE.WebGLRenderer();
renderer.physicallyCorrectLights = true;
renderer.toneMapping = THREE.ACESFilmicToneMapping;
//
let geometry = new THREE.TorusKnotGeometry( 18, 8, 150, 20 );
// let geometry = new THREE.SphereGeometry( 26, 64, 32 );
let material = new THREE.MeshStandardMaterial( {
color: 0xffffff,
metalness: params.metalness,
roughness: params.roughness
} );
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();
};
const hdrUrls = [ 'px.hdr', 'nx.hdr', 'py.hdr', 'ny.hdr', 'pz.hdr', 'nz.hdr' ];
hdrCubeMap = new HDRCubeTextureLoader()
.setPath( './textures/cube/pisaHDR/' )
.load( hdrUrls, function () {
hdrCubeRenderTarget = pmremGenerator.fromCubemap( hdrCubeMap );
hdrCubeMap.magFilter = THREE.LinearFilter;
hdrCubeMap.needsUpdate = true;
} );
const ldrUrls = [ 'px.png', 'nx.png', 'py.png', 'ny.png', 'pz.png', 'nz.png' ];
ldrCubeMap = new THREE.CubeTextureLoader()
.setPath( './textures/cube/pisa/' )
.load( ldrUrls, function () {
ldrCubeMap.encoding = THREE.sRGBEncoding;
ldrCubeRenderTarget = pmremGenerator.fromCubemap( ldrCubeMap );
} );
const rgbmUrls = [ 'px.png', 'nx.png', 'py.png', 'ny.png', 'pz.png', 'nz.png' ];
rgbmCubeMap = new RGBMLoader().setMaxRange( 16 )
.setPath( './textures/cube/pisaRGBM16/' )
.loadCubemap( rgbmUrls, function () {
rgbmCubeRenderTarget = pmremGenerator.fromCubemap( rgbmCubeMap );
} );
const pmremGenerator = new THREE.PMREMGenerator( renderer );
pmremGenerator.compileCubemapShader();
const envScene = new DebugEnvironment();
generatedCubeRenderTarget = pmremGenerator.fromScene( envScene );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
//renderer.toneMapping = ReinhardToneMapping;
renderer.outputEncoding = THREE.sRGBEncoding;
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', [ 'Generated', 'LDR', 'HDR', 'RGBM16' ] );
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', false );
gui.open();
}
function onWindowResize() {
const width = window.innerWidth;
const height = window.innerHeight;
camera.aspect = width / height;
camera.updateProjectionMatrix();
renderer.setSize( width, height );
}
function animate() {
requestAnimationFrame( animate );
stats.begin();
render();
stats.end();
}
function render() {
torusMesh.material.roughness = params.roughness;
torusMesh.material.metalness = params.metalness;
let renderTarget, cubeMap;
switch ( params.envMap ) {
case 'Generated':
renderTarget = generatedCubeRenderTarget;
cubeMap = generatedCubeRenderTarget.texture;
break;
case 'LDR':
renderTarget = ldrCubeRenderTarget;
cubeMap = ldrCubeMap;
break;
case 'HDR':
renderTarget = hdrCubeRenderTarget;
cubeMap = hdrCubeMap;
break;
case 'RGBM16':
renderTarget = rgbmCubeRenderTarget;
cubeMap = rgbmCubeMap;
break;
}
const newEnvMap = renderTarget ? renderTarget.texture : null;
if ( newEnvMap && 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 = cubeMap;
renderer.toneMappingExposure = params.exposure;
renderer.render( scene, camera );
}
</script>
</body>
</html>