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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js WebGL 2 - Multisampled Renderbuffers</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">
- <style>
- body {
- background-color: #fff;
- color: #222;
- }
- a {
- color: #08f;
- }
- #container {
- position: absolute;
- top: 70px;
- width: 100%;
- bottom: 0px;
- }
- </style>
- </head>
- <body>
- <div id="info">
- <a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - Multisampled Renderbuffers<br />
- Left: WebGLRenderTarget, Right: WebGLMultisampleRenderTarget.
- </div>
- <div id="container">
- </div>
- <script type="module">
- import * as THREE from '../build/three.module.js';
- import { EffectComposer } from './jsm/postprocessing/EffectComposer.js';
- import { RenderPass } from './jsm/postprocessing/RenderPass.js';
- import { ShaderPass } from './jsm/postprocessing/ShaderPass.js';
- import { CopyShader } from './jsm/shaders/CopyShader.js';
- import { WEBGL } from './jsm/WebGL.js';
- if ( WEBGL.isWebGL2Available() === false ) {
- document.body.appendChild( WEBGL.getWebGL2ErrorMessage() );
- }
- var camera, scene, renderer, clock, group, container;
- var composer1, composer2;
- init();
- animate();
- function init() {
- container = document.getElementById( 'container' );
- camera = new THREE.PerspectiveCamera( 45, container.offsetWidth / container.offsetHeight, 1, 2000 );
- camera.position.z = 500;
- scene = new THREE.Scene();
- scene.background = new THREE.Color( 0xffffff );
- scene.fog = new THREE.Fog( 0xcccccc, 100, 1500 );
- clock = new THREE.Clock();
- //
- var hemiLight = new THREE.HemisphereLight( 0xffffff, 0x222222, 1.5 );
- hemiLight.position.set( 1, 1, 1 );
- scene.add( hemiLight );
- //
- group = new THREE.Group();
- var geometry = new THREE.SphereBufferGeometry( 10, 64, 40 );
- var material = new THREE.MeshLambertMaterial( { color: 0xee0808 } );
- var material2 = new THREE.MeshBasicMaterial( { color: 0xffffff, wireframe: true } );
- for ( var i = 0; i < 10; i ++ ) {
- var mesh = new THREE.Mesh( geometry, material );
- mesh.position.x = Math.random() * 600 - 300;
- mesh.position.y = Math.random() * 600 - 300;
- mesh.position.z = Math.random() * 600 - 300;
- mesh.rotation.x = Math.random();
- mesh.rotation.z = Math.random();
- mesh.scale.setScalar( Math.random() * 5 + 5 );
- group.add( mesh );
- var mesh2 = new THREE.Mesh( geometry, material2 );
- mesh2.position.copy( mesh.position );
- mesh2.rotation.copy( mesh.rotation );
- mesh2.scale.copy( mesh.scale );
- group.add( mesh2 );
- }
- scene.add( group );
- //
- var canvas = document.createElement( 'canvas' );
- var context = canvas.getContext( 'webgl2', { alpha: false, antialias: false } );
- renderer = new THREE.WebGLRenderer( { canvas: canvas, context: context } );
- renderer.autoClear = false;
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( container.offsetWidth, container.offsetHeight );
- container.appendChild( renderer.domElement );
- //
- var parameters = {
- format: THREE.RGBFormat,
- stencilBuffer: false
- };
- var size = renderer.getDrawingBufferSize( new THREE.Vector2() );
- var renderTarget = new THREE.WebGLMultisampleRenderTarget( size.width, size.height, parameters );
- var renderPass = new RenderPass( scene, camera );
- var copyPass = new ShaderPass( CopyShader );
- //
- composer1 = new EffectComposer( renderer );
- composer1.addPass( renderPass );
- composer1.addPass( copyPass );
- //
- composer2 = new EffectComposer( renderer, renderTarget );
- composer2.addPass( renderPass );
- composer2.addPass( copyPass );
- //
- window.addEventListener( 'resize', onWindowResize, false );
- }
- function onWindowResize() {
- camera.aspect = container.offsetWidth / container.offsetHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( container.offsetWidth, container.offsetHeight );
- composer1.setSize( container.offsetWidth, container.offsetHeight );
- composer2.setSize( container.offsetWidth, container.offsetHeight );
- }
- function animate() {
- requestAnimationFrame( animate );
- var halfWidth = container.offsetWidth / 2;
- group.rotation.y += clock.getDelta() * 0.1;
- renderer.setScissorTest( true );
- renderer.setScissor( 0, 0, halfWidth - 1, container.offsetHeight );
- composer1.render();
- renderer.setScissor( halfWidth, 0, halfWidth, container.offsetHeight );
- composer2.render();
- renderer.setScissorTest( false );
- }
- </script>
- </body>
- </html>
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