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<head>
<title>three.js - webgl memory test I</title>
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<link type="text/css" rel="stylesheet" href="main.css">
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body {
background-color: #fff;
color: #000;
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a {
color: #08f;
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<body>
<div id="info">
<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - memory test I
</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';
let camera, scene, renderer;
init();
animate();
function init() {
const container = document.createElement( 'div' );
document.body.appendChild( container );
camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 10000 );
camera.position.z = 200;
scene = new THREE.Scene();
scene.background = new THREE.Color( 0xffffff );
renderer = new THREE.WebGLRenderer();
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
}
function createImage() {
const canvas = document.createElement( 'canvas' );
canvas.width = 256;
canvas.height = 256;
const context = canvas.getContext( '2d' );
context.fillStyle = 'rgb(' + Math.floor( Math.random() * 256 ) + ',' + Math.floor( Math.random() * 256 ) + ',' + Math.floor( Math.random() * 256 ) + ')';
context.fillRect( 0, 0, 256, 256 );
return canvas;
}
//
function animate() {
requestAnimationFrame( animate );
render();
}
function render() {
const geometry = new THREE.SphereGeometry( 50, Math.random() * 64, Math.random() * 32 );
const texture = new THREE.CanvasTexture( createImage() );
const material = new THREE.MeshBasicMaterial( { map: texture, wireframe: true } );
const mesh = new THREE.Mesh( geometry, material );
scene.add( mesh );
renderer.render( scene, camera );
scene.remove( mesh );
// clean up
geometry.dispose();
material.dispose();
texture.dispose();
}
</script>
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