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webgl_materials_envmaps_exr.html
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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">
<style>
body {
color: #fff;
font-family:Monospace;
font-size:13px;
text-align:center;
background-color: #000;
margin: 0px;
overflow: hidden;
}
a { color: #00f }
#info {
position: absolute;
top: 0px; width: 100%;
padding: 5px;
}
</style>
</head>
<body>
<div id="container"></div>
<div id="info"><a href="http://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 src="../build/three.js"></script>
<script src="js/controls/OrbitControls.js"></script>
<script src="js/loaders/EXRLoader.js"></script>
<script src="js/loaders/EquirectangularToCubeGenerator.js"></script>
<script src="js/WebGL.js"></script>
<script src="js/libs/stats.min.js"></script>
<script src="js/pmrem/PMREMGenerator.js"></script>
<script src="js/pmrem/PMREMCubeUVPacker.js"></script>
<script src="js/libs/dat.gui.min.js"></script>
<script>
if ( WEBGL.isWebGLAvailable() === false ) {
document.body.appendChild( WEBGL.getWebGLErrorMessage() );
}
var params = {
envMap: 'EXR',
roughness: 0.0,
metalness: 0.0,
exposure: 1.0,
debug: false,
};
var container, stats;
var camera, scene, renderer, controls;
var torusMesh, planeMesh;
var standardMaterial, floorMaterial;
var pngCubeRenderTarget, exrCubeRenderTarget;
var pngBackground, exrBackground;
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();
renderer = new THREE.WebGLRenderer();
renderer.toneMapping = THREE.LinearToneMapping;
//
var geometry = new THREE.TorusKnotBufferGeometry( 18, 8, 150, 20 );
var material = new THREE.MeshStandardMaterial( {
metalness: params.roughness,
roughness: params.metalness,
envMapIntensity: 1.0
} );
torusMesh = new THREE.Mesh( geometry, material );
scene.add( torusMesh );
var geometry = new THREE.PlaneBufferGeometry( 200, 200 );
var material = new THREE.MeshBasicMaterial();
planeMesh = new THREE.Mesh( geometry, material );
planeMesh.position.y = - 50;
planeMesh.rotation.x = - Math.PI * 0.5;
scene.add( planeMesh );
new THREE.EXRLoader().load( 'textures/piz_compressed.exr', function ( texture ) {
texture.minFilter = THREE.NearestFilter;
// texture.magFilter = THREE.NearestFilter;
texture.encoding = THREE.LinearEncoding;
var cubemapGenerator = new THREE.EquirectangularToCubeGenerator( texture, { resolution: 512, type: THREE.HalfFloatType } );
exrBackground = cubemapGenerator.renderTarget;
var cubeMapTexture = cubemapGenerator.update( renderer );
var pmremGenerator = new THREE.PMREMGenerator( cubeMapTexture );
pmremGenerator.update( renderer );
var pmremCubeUVPacker = new THREE.PMREMCubeUVPacker( pmremGenerator.cubeLods );
pmremCubeUVPacker.update( renderer );
exrCubeRenderTarget = pmremCubeUVPacker.CubeUVRenderTarget;
texture.dispose();
pmremGenerator.dispose();
pmremCubeUVPacker.dispose();
} );
new THREE.TextureLoader().load( 'textures/equirectangular.png', function ( texture ) {
texture.encoding = THREE.sRGBEncoding;
var cubemapGenerator = new THREE.EquirectangularToCubeGenerator( texture, { resolution: 512 } );
pngBackground = cubemapGenerator.renderTarget;
var cubeMapTexture = cubemapGenerator.update( renderer );
var pmremGenerator = new THREE.PMREMGenerator( cubeMapTexture );
pmremGenerator.update( renderer );
var pmremCubeUVPacker = new THREE.PMREMCubeUVPacker( pmremGenerator.cubeLods );
pmremCubeUVPacker.update( renderer );
pngCubeRenderTarget = pmremCubeUVPacker.CubeUVRenderTarget;
texture.dispose();
pmremGenerator.dispose();
pmremCubeUVPacker.dispose();
} );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
renderer.gammaInput = false;
renderer.gammaOutput = true;
stats = new Stats();
container.appendChild( stats.dom );
controls = new THREE.OrbitControls( camera, renderer.domElement );
controls.minDistance = 50;
controls.maxDistance = 300;
window.addEventListener( 'resize', onWindowResize, false );
var gui = new dat.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', false );
gui.open();
}
function onWindowResize() {
var width = window.innerWidth;
var 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;
var newEnvMap = torusMesh.material.envMap;
var 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>