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233 lines
7.3 KiB
HTML
233 lines
7.3 KiB
HTML
2 months 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 webgpu - ambient occlusion</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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</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> webgpu - postprocessing - ambient occlusion<br />
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<a href="https://skfb.ly/oCnNx" target="_blank" rel="noopener">Minimalistic Modern Bedroom</a> by
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<a href="https://sketchfab.com/dylanheyes" target="_blank" rel="noopener">dylanheyes</a> is licensed under <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank" rel="noopener">Creative Commons Attribution</a>.<br />
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</div>
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<script type="importmap">
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{
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"imports": {
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"three": "../build/three.webgpu.js",
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"three/webgpu": "../build/three.webgpu.js",
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"three/tsl": "../build/three.tsl.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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import { pass, mrt, output, normalView } from 'three/tsl';
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import { ao } from 'three/addons/tsl/display/GTAONode.js';
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import { denoise } from 'three/addons/tsl/display/DenoiseNode.js';
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import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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import { DRACOLoader } from 'three/addons/loaders/DRACOLoader.js';
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import { RoomEnvironment } from 'three/addons/environments/RoomEnvironment.js';
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import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
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import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
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let camera, scene, renderer, postProcessing, controls;
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let aoPass, denoisePass, blendPassAO, blendPassDenoise, scenePassColor;
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const params = {
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distanceExponent: 1,
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distanceFallOff: 1,
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radius: 0.25,
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scale: 1,
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thickness: 1,
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denoised: false,
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enabled: true,
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denoiseRadius: 5,
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lumaPhi: 5,
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depthPhi: 5,
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normalPhi: 5
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};
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init();
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async function init() {
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camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.1, 50 );
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camera.position.set( 1, 1.3, 5 );
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scene = new THREE.Scene();
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renderer = new THREE.WebGPURenderer( { antialias: true } );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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renderer.setAnimationLoop( animate );
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document.body.appendChild( renderer.domElement );
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await renderer.init();
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const environment = new RoomEnvironment();
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const pmremGenerator = new THREE.PMREMGenerator( renderer );
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scene.background = new THREE.Color( 0x666666 );
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scene.environment = pmremGenerator.fromScene( environment ).texture;
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environment.dispose();
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pmremGenerator.dispose();
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//
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controls = new OrbitControls( camera, renderer.domElement );
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controls.target.set( 0, 0.5, - 1 );
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controls.update();
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controls.enablePan = false;
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controls.enableDamping = true;
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controls.minDistance = 2;
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controls.maxDistance = 8;
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//
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postProcessing = new THREE.PostProcessing( renderer );
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const scenePass = pass( scene, camera );
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scenePass.setMRT( mrt( {
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output: output,
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normal: normalView
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} ) );
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scenePassColor = scenePass.getTextureNode( 'output' );
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const scenePassNormal = scenePass.getTextureNode( 'normal' );
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const scenePassDepth = scenePass.getTextureNode( 'depth' );
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// ao
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aoPass = ao( scenePassDepth, scenePassNormal, camera );
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aoPass.resolutionScale = 0.5; // running AO in half resolution is often sufficient
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blendPassAO = aoPass.getTextureNode().mul( scenePassColor );
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// denoise (optional, use it if you need best quality but is has a noticeable hit on performance)
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denoisePass = denoise( aoPass.getTextureNode(), scenePassDepth, scenePassNormal, camera );
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blendPassDenoise = denoisePass.mul( scenePassColor );
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postProcessing.outputNode = blendPassAO;
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//
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const dracoLoader = new DRACOLoader();
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dracoLoader.setDecoderPath( 'jsm/libs/draco/' );
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dracoLoader.setDecoderConfig( { type: 'js' } );
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const loader = new GLTFLoader();
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loader.setDRACOLoader( dracoLoader );
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loader.setPath( 'models/gltf/' );
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const gltf = await loader.loadAsync( 'minimalistic_modern_bedroom.glb' );
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const model = gltf.scene;
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model.position.set( 0, 1, 0 );
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scene.add( model );
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model.traverse( ( o ) => {
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// Transparent objects (e.g. loaded via GLTFLoader) might have "depthWrite" set to "false".
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// This is wanted when rendering the beauty pass however it produces wrong results when computing
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// AO since depth and normal data are out of sync. Computing normals from depth by not using MRT
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// can mitigate the issue although the depth information (and thus the normals) are not correct in
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// first place. Besides, normal estimation is computationally more expensive than just sampling a
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// normal texture. So depending on your scene, consider to enable "depthWrite" for all transparent objects.
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if ( o.material ) o.material.depthWrite = true;
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} );
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window.addEventListener( 'resize', onWindowResize );
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//
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const gui = new GUI();
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gui.title( 'AO settings' );
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gui.add( params, 'distanceExponent' ).min( 1 ).max( 4 ).onChange( updateParameters );
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gui.add( params, 'distanceFallOff' ).min( 0.01 ).max( 1 ).onChange( updateParameters );
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gui.add( params, 'radius' ).min( 0.01 ).max( 1 ).onChange( updateParameters );
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gui.add( params, 'scale' ).min( 0.01 ).max( 2 ).onChange( updateParameters );
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gui.add( params, 'thickness' ).min( 0.01 ).max( 2 ).onChange( updateParameters );
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gui.add( params, 'enabled' ).onChange( updatePassChain );
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const folder = gui.addFolder( 'Denoise settings' );
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folder.add( params, 'denoiseRadius' ).min( 0.01 ).max( 10 ).name( 'radius' ).onChange( updateParameters );
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folder.add( params, 'lumaPhi' ).min( 0.01 ).max( 10 ).onChange( updateParameters );
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folder.add( params, 'depthPhi' ).min( 0.01 ).max( 10 ).onChange( updateParameters );
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folder.add( params, 'normalPhi' ).min( 0.01 ).max( 10 ).onChange( updateParameters );
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folder.add( params, 'denoised' ).name( 'enabled' ).onChange( updatePassChain );
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}
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function updatePassChain() {
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if ( params.enabled === true ) {
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if ( params.denoised === true ) {
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postProcessing.outputNode = blendPassDenoise;
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} else {
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postProcessing.outputNode = blendPassAO;
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}
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} else {
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postProcessing.outputNode = scenePassColor;
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}
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postProcessing.needsUpdate = true;
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}
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function updateParameters() {
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aoPass.distanceExponent.value = params.distanceExponent;
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aoPass.distanceFallOff.value = params.distanceFallOff;
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aoPass.radius.value = params.radius;
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aoPass.scale.value = params.scale;
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aoPass.thickness.value = params.thickness;
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denoisePass.radius.value = params.denoiseRadius;
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denoisePass.lumaPhi.value = params.lumaPhi;
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denoisePass.depthPhi.value = params.depthPhi;
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denoisePass.normalPhi.value = params.normalPhi;
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}
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function onWindowResize() {
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const width = window.innerWidth;
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const height = window.innerHeight;
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camera.aspect = width / height;
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camera.updateProjectionMatrix();
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renderer.setSize( width, height );
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}
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function animate() {
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controls.update();
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postProcessing.render();
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}
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</script>
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</body>
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</html>
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