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jsantell/memory-leak.html

Created November 28, 2018 02:12
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memory-leak.html
<!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>
if ( WEBGL.isWebGLAvailable() === false ) {
document.body.appendChild( WEBGL.getWebGLErrorMessage() );
}
var container, stats;
var camera, scene, renderer, controls, objects = [];
var standardMaterial, floorMaterial;
var pngCubeRenderTarget, exrCubeRenderTarget;
var pngBackground, exrBackground;
init();
animate();
(async function() {
const wait = ms => new Promise(resolve => setTimeout(resolve, ms));
while (1) {
const t = (performance.now() / 1000).toFixed(2);
console.log('updating texture', `${t}s`);
await updateTexture();
await wait(1000);
}
})();
function init() {
THREE.Cache.enabled = true;
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.toneMapping = THREE.LinearToneMapping;
standardMaterial = new THREE.MeshStandardMaterial( {
map: null,
color: 0xffffff,
metalness: 1,
roughness: 0,
envMapIntensity: 1.0
} );
var geometry = new THREE.TorusKnotBufferGeometry( 18, 8, 150, 20 );
var torusMesh1 = new THREE.Mesh( geometry, standardMaterial );
scene.add( torusMesh1 );
objects.push( torusMesh1 );
floorMaterial = new THREE.MeshBasicMaterial( {
color: 0xffffff
} );
var planeGeometry = new THREE.PlaneBufferGeometry( 200, 200 );
var planeMesh1 = new THREE.Mesh( planeGeometry, floorMaterial );
planeMesh1.position.y = - 50;
planeMesh1.rotation.x = - Math.PI * 0.5;
scene.add( planeMesh1 );
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 );
}
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();
}
async function updateTexture() {
return new Promise(resolve => {
new THREE.EXRLoader().load( 'textures/piz_compressed.exr', function ( texture ) {
// Clean up previous map/renderTarget
if (standardMaterial.envMap) {
standardMaterial.envMap.dispose();
floorMaterial.map = standardMaterial.envMap = null;
}
texture.minFilter = THREE.NearestFilter;
texture.magFilter = THREE.NearestFilter;
texture.encoding = THREE.LinearEncoding;
var cubemapGenerator = new THREE.EquirectangularToCubeGenerator( texture, { resolution: 512, type: THREE.HalfFloatType } );
var cubeMapTexture = cubemapGenerator.update( renderer );
var pmremGenerator = new THREE.PMREMGenerator( cubeMapTexture );
pmremGenerator.update( renderer );
var pmremCubeUVPacker = new THREE.PMREMCubeUVPacker( pmremGenerator.cubeLods );
pmremCubeUVPacker.update( renderer );
var renderTarget = pmremCubeUVPacker.CubeUVRenderTarget;
var envMap = renderTarget.texture;
texture.dispose();
cubemapGenerator.dispose();
pmremGenerator.dispose();
pmremCubeUVPacker.dispose();
envMap.dispose = () => {
renderTarget.dispose();
}
standardMaterial.envMap = envMap;
standardMaterial.needsUpdate = true;
floorMaterial.map = envMap;
floorMaterial.needsUpdate = true;
resolve();
} );
});
}
function render() {
for ( var i = 0, l = objects.length; i < l; i ++ ) {
var object = objects[ i ];
object.rotation.y += 0.005;
}
renderer.render( scene, camera );
}
</script>
</body>
</html>
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