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2 years ago
<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - postprocessing - Screen Space Ambient Occlusion</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: #aaa;
}
</style>
</head>
<body>
<div id="info">
<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - screen space ambient occlusion<br/>
</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';
import Stats from 'three/addons/libs/stats.module.js';
import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
import { EffectComposer } from 'three/addons/postprocessing/EffectComposer.js';
import { SSAOPass } from 'three/addons/postprocessing/SSAOPass.js';
let container, stats;
let camera, scene, renderer;
let composer;
let group;
init();
animate();
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
renderer = new THREE.WebGLRenderer();
renderer.setSize( window.innerWidth, window.innerHeight );
document.body.appendChild( renderer.domElement );
camera = new THREE.PerspectiveCamera( 65, window.innerWidth / window.innerHeight, 100, 700 );
camera.position.z = 500;
scene = new THREE.Scene();
scene.background = new THREE.Color( 0xaaaaaa );
scene.add( new THREE.DirectionalLight() );
scene.add( new THREE.HemisphereLight() );
group = new THREE.Group();
scene.add( group );
const geometry = new THREE.BoxGeometry( 10, 10, 10 );
for ( let i = 0; i < 100; i ++ ) {
const material = new THREE.MeshLambertMaterial( {
color: Math.random() * 0xffffff
} );
const mesh = new THREE.Mesh( geometry, material );
mesh.position.x = Math.random() * 400 - 200;
mesh.position.y = Math.random() * 400 - 200;
mesh.position.z = Math.random() * 400 - 200;
mesh.rotation.x = Math.random();
mesh.rotation.y = Math.random();
mesh.rotation.z = Math.random();
mesh.scale.setScalar( Math.random() * 10 + 2 );
group.add( mesh );
}
stats = new Stats();
container.appendChild( stats.dom );
const width = window.innerWidth;
const height = window.innerHeight;
composer = new EffectComposer( renderer );
const ssaoPass = new SSAOPass( scene, camera, width, height );
ssaoPass.kernelRadius = 16;
composer.addPass( ssaoPass );
// Init gui
const gui = new GUI();
gui.add( ssaoPass, 'output', {
'Default': SSAOPass.OUTPUT.Default,
'SSAO Only': SSAOPass.OUTPUT.SSAO,
'SSAO Only + Blur': SSAOPass.OUTPUT.Blur,
'Beauty': SSAOPass.OUTPUT.Beauty,
'Depth': SSAOPass.OUTPUT.Depth,
'Normal': SSAOPass.OUTPUT.Normal
} ).onChange( function ( value ) {
ssaoPass.output = parseInt( value );
} );
gui.add( ssaoPass, 'kernelRadius' ).min( 0 ).max( 32 );
gui.add( ssaoPass, 'minDistance' ).min( 0.001 ).max( 0.02 );
gui.add( ssaoPass, 'maxDistance' ).min( 0.01 ).max( 0.3 );
window.addEventListener( 'resize', onWindowResize );
}
function onWindowResize() {
const width = window.innerWidth;
const height = window.innerHeight;
camera.aspect = width / height;
camera.updateProjectionMatrix();
renderer.setSize( width, height );
composer.setSize( width, height );
}
function animate() {
requestAnimationFrame( animate );
stats.begin();
render();
stats.end();
}
function render() {
const timer = performance.now();
group.rotation.x = timer * 0.0002;
group.rotation.y = timer * 0.0001;
composer.render();
}
</script>
</body>
</html>