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116 lines
2.5 KiB
116 lines
2.5 KiB
2 years ago
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js - webgl memory test I</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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<link type="text/css" rel="stylesheet" href="main.css">
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<style>
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body {
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background-color: #fff;
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color: #000;
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}
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a {
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color: #08f;
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}
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</style>
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</head>
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<body>
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<div id="info">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - memory test I
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</div>
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<!-- Import maps polyfill -->
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<!-- Remove this when import maps will be widely supported -->
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<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
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<script type="importmap">
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{
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"imports": {
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"three": "../build/three.module.js",
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"three/addons/": "./jsm/"
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}
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}
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</script>
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<script type="module">
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import * as THREE from 'three';
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let camera, scene, renderer;
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init();
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animate();
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function init() {
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const container = document.createElement( 'div' );
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document.body.appendChild( container );
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camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 10000 );
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camera.position.z = 200;
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scene = new THREE.Scene();
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scene.background = new THREE.Color( 0xffffff );
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renderer = new THREE.WebGLRenderer();
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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container.appendChild( renderer.domElement );
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}
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function createImage() {
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const canvas = document.createElement( 'canvas' );
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canvas.width = 256;
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canvas.height = 256;
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const context = canvas.getContext( '2d' );
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context.fillStyle = 'rgb(' + Math.floor( Math.random() * 256 ) + ',' + Math.floor( Math.random() * 256 ) + ',' + Math.floor( Math.random() * 256 ) + ')';
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context.fillRect( 0, 0, 256, 256 );
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return canvas;
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}
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//
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function animate() {
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requestAnimationFrame( animate );
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render();
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}
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function render() {
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const geometry = new THREE.SphereGeometry( 50, Math.random() * 64, Math.random() * 32 );
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const texture = new THREE.CanvasTexture( createImage() );
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const material = new THREE.MeshBasicMaterial( { map: texture, wireframe: true } );
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const mesh = new THREE.Mesh( geometry, material );
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scene.add( mesh );
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renderer.render( scene, camera );
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scene.remove( mesh );
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// clean up
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geometry.dispose();
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material.dispose();
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texture.dispose();
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}
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</script>
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</body>
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</html>
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