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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - post processing - Scalable Ambient Occlusion (SAO)</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">
</head>
<body>
<div id="info">
<a href="https://threejs.org" target="_blank" rel="noopener noreferrer">three.js</a> - Scalable Ambient Occlusion (SAO)<br/>
shader by <a href="http://clara.io">Ben Houston</a> / Post-processing pass by <a href="http://ludobaka.github.io">Ludobaka</a>
</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 { RenderPass } from 'three/addons/postprocessing/RenderPass.js';
import { SAOPass } from 'three/addons/postprocessing/SAOPass.js';
let container, stats;
let camera, scene, renderer;
let composer, renderPass, saoPass;
let group;
init();
animate();
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
const width = window.innerWidth || 1;
const height = window.innerHeight || 1;
const devicePixelRatio = window.devicePixelRatio || 1;
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setClearColor( 0x000000 );
renderer.setPixelRatio( devicePixelRatio );
renderer.setSize( width, height );
document.body.appendChild( renderer.domElement );
camera = new THREE.PerspectiveCamera( 65, width / height, 3, 10 );
camera.position.z = 7;
scene = new THREE.Scene();
group = new THREE.Object3D();
scene.add( group );
const light = new THREE.PointLight( 0xddffdd, 0.8 );
light.position.z = 70;
light.position.y = - 70;
light.position.x = - 70;
scene.add( light );
const light2 = new THREE.PointLight( 0xffdddd, 0.8 );
light2.position.z = 70;
light2.position.x = - 70;
light2.position.y = 70;
scene.add( light2 );
const light3 = new THREE.PointLight( 0xddddff, 0.8 );
light3.position.z = 70;
light3.position.x = 70;
light3.position.y = - 70;
scene.add( light3 );
const light4 = new THREE.AmbientLight( 0xffffff, 0.05 );
scene.add( light4 );
const geometry = new THREE.SphereGeometry( 3, 48, 24 );
for ( let i = 0; i < 120; i ++ ) {
const material = new THREE.MeshStandardMaterial();
material.roughness = 0.5 * Math.random() + 0.25;
material.metalness = 0;
material.color.setHSL( Math.random(), 1.0, 0.3 );
const mesh = new THREE.Mesh( geometry, material );
mesh.position.x = Math.random() * 4 - 2;
mesh.position.y = Math.random() * 4 - 2;
mesh.position.z = Math.random() * 4 - 2;
mesh.rotation.x = Math.random();
mesh.rotation.y = Math.random();
mesh.rotation.z = Math.random();
mesh.scale.x = mesh.scale.y = mesh.scale.z = Math.random() * 0.2 + 0.05;
group.add( mesh );
}
stats = new Stats();
container.appendChild( stats.dom );
composer = new EffectComposer( renderer );
renderPass = new RenderPass( scene, camera );
composer.addPass( renderPass );
saoPass = new SAOPass( scene, camera, false, true );
composer.addPass( saoPass );
// Init gui
const gui = new GUI();
gui.add( saoPass.params, 'output', {
'Beauty': SAOPass.OUTPUT.Beauty,
'Beauty+SAO': SAOPass.OUTPUT.Default,
'SAO': SAOPass.OUTPUT.SAO,
'Depth': SAOPass.OUTPUT.Depth,
'Normal': SAOPass.OUTPUT.Normal
} ).onChange( function ( value ) {
saoPass.params.output = parseInt( value );
} );
gui.add( saoPass.params, 'saoBias', - 1, 1 );
gui.add( saoPass.params, 'saoIntensity', 0, 1 );
gui.add( saoPass.params, 'saoScale', 0, 10 );
gui.add( saoPass.params, 'saoKernelRadius', 1, 100 );
gui.add( saoPass.params, 'saoMinResolution', 0, 1 );
gui.add( saoPass.params, 'saoBlur' );
gui.add( saoPass.params, 'saoBlurRadius', 0, 200 );
gui.add( saoPass.params, 'saoBlurStdDev', 0.5, 150 );
gui.add( saoPass.params, 'saoBlurDepthCutoff', 0.0, 0.1 );
window.addEventListener( 'resize', onWindowResize );
}
function onWindowResize() {
const width = window.innerWidth || 1;
const height = window.innerHeight || 1;
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>