samien
/
three.js
miroir de https://github.com/mrdoob/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgpu - 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">
	</head>
	<body>

		<div id="info">
			<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> webgpu - postprocessing - ambient occlusion<br />
			<a href="https://skfb.ly/oCnNx" target="_blank" rel="noopener">Minimalistic Modern Bedroom</a> by 
			<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 />
		</div>

		<script type="importmap">
			{
				"imports": {
					"three": "../build/three.webgpu.js",
					"three/webgpu": "../build/three.webgpu.js",
					"three/tsl": "../build/three.tsl.js",
					"three/addons/": "./jsm/"
				}
			}
		</script>

		<script type="module">

			import * as THREE from 'three/webgpu';
			import { pass, mrt, output, metalness, normalView, roughness, velocity, blendColor, sample, vec2 } from 'three/tsl';
			import { ao } from 'three/addons/tsl/display/GTAONode.js';
			import { ssr } from 'three/addons/tsl/display/SSRNode.js';
			import { traa } from 'three/addons/tsl/display/TRAANode.js';

			import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
			import { DRACOLoader } from 'three/addons/loaders/DRACOLoader.js';
			import { RoomEnvironment } from 'three/addons/environments/RoomEnvironment.js';
			import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';

			import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
			import Stats from 'three/addons/libs/stats.module.js';

			let camera, scene, renderer, postProcessing, controls, stats;

			let aoPass, ssrPass;

			const params = {
				distanceExponent: 1,
				distanceFallOff: 1,
				radius: 0.25,
				scale: 1,
				thickness: 1,
				denoiseRadius: 5,
				lumaPhi: 5,
				depthPhi: 5,
				normalPhi: 5
			};

			init();

			async function init() {

				camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.1, 50 );
				camera.position.set( 1, 1.3, 5 );

				scene = new THREE.Scene();

				renderer = new THREE.WebGPURenderer();
				// renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.setAnimationLoop( animate );
				renderer.toneMapping = THREE.NeutralToneMapping;
				renderer.toneMappingExposure = 3.0;
				document.body.appendChild( renderer.domElement );

				stats = new Stats();
				document.body.appendChild( stats.domElement );

				await renderer.init();

				const environment = new RoomEnvironment();
				const pmremGenerator = new THREE.PMREMGenerator( renderer );

				scene.background = new THREE.Color( 0x666666 );
				scene.environment = pmremGenerator.fromScene( environment ).texture;
				environment.dispose();
				pmremGenerator.dispose();

				//

				controls = new OrbitControls( camera, renderer.domElement );
				controls.target.set( 0, 0.5, - 1 );
				controls.update();
				controls.enableDamping = true;

				//

				postProcessing = new THREE.PostProcessing( renderer );

				const scenePass = pass( scene, camera );
				scenePass.setMRT( mrt( {
					output: output,
					normal: normalView,
					metalrough: vec2( metalness, roughness ),
					velocity: velocity
				} ) );

				const scenePassColor = scenePass.getTextureNode( 'output' );
				const scenePassDepth = scenePass.getTextureNode( 'depth' );
				const scenePassNormal = scenePass.getTextureNode( 'normal' );
				const scenePassMetalRough = scenePass.getTextureNode( 'metalrough' );
				const scenePassVelocity = scenePass.getTextureNode( 'velocity' );

				const metalRoughTexture = scenePass.getTexture( 'metalrough' );
				metalRoughTexture.type = THREE.UnsignedByteType;

				// ao

				aoPass = ao( scenePassDepth, scenePassNormal, camera );
				aoPass.resolutionScale = 0.5;
			
				// ssr

				const customMetalness = sample( ( uv ) => {

					const metalRough = scenePassMetalRough.sample( uv );
					return metalRough.r.mul( metalRough.g.add( 0.25 ) );

				} );

				ssrPass = ssr( scenePassColor, scenePassDepth, scenePassNormal, customMetalness, camera );
				ssrPass.resolutionScale = 1.0;

				postProcessing.outputNode = traa(
					blendColor( scenePassColor.mul( aoPass ), ssrPass ),
					scenePassDepth, scenePassVelocity, camera
				);

				//

				const dracoLoader = new DRACOLoader();
				dracoLoader.setDecoderPath( 'jsm/libs/draco/' );
				dracoLoader.setDecoderConfig( { type: 'js' } );
				const loader = new GLTFLoader();
				loader.setDRACOLoader( dracoLoader );
				loader.setPath( 'models/gltf/' );

				const gltf = await loader.loadAsync( 'minimalistic_modern_bedroom.glb' );

				const model = gltf.scene;
				model.position.set( 0, 1, 0 );
				scene.add( model );

				// Fix scene

				const duvet = model.getObjectByName( 'Bedroom_Duvet_0' );
				duvet.material.metalness = 0;

				const carpet = model.getObjectByName( 'Bedroom_Carpet_0' );
				carpet.material.metalness = 0;

				const windows = model.getObjectByName( 'Bedroom_Windows_0' );
				windows.material.emissive = new THREE.Color( 0xffffff );
				windows.material.emissiveIntensity = 1.0;

				model.traverse( ( o ) => {

					if ( o.material ) {

						if ( o.material.map ) o.material.map.anisotropy = 8;
						if ( o.material.roughnessMap ) o.material.roughnessMap.anisotropy = 8;

						// Remove emissive from all materials

						o.material.emissive = new THREE.Color( 0x000000 );
						o.material.emissiveMap = null;

						// Transparent objects (e.g. loaded via GLTFLoader) might have "depthWrite" set to "false".
						// This is wanted when rendering the beauty pass however it produces wrong results when computing
						// AO since depth and normal data are out of sync. Computing normals from depth by not using MRT
						// can mitigate the issue although the depth information (and thus the normals) are not correct in
						// first place. Besides, normal estimation is computationally more expensive than just sampling a
						// normal texture. So depending on your scene, consider to enable "depthWrite" for all transparent objects.

						o.material.depthWrite = true;

					}

				} );

				//

				window.addEventListener( 'resize', onWindowResize );

				//

				const gui = new GUI();
				gui.title( 'AO settings' );
				gui.add( params, 'distanceExponent' ).min( 1 ).max( 4 ).onChange( updateParameters );
				gui.add( params, 'distanceFallOff' ).min( 0.01 ).max( 1 ).onChange( updateParameters );
				gui.add( params, 'radius' ).min( 0.1 ).max( 1 ).onChange( updateParameters );
				gui.add( params, 'scale' ).min( 0.01 ).max( 2 ).onChange( updateParameters );
				gui.add( params, 'thickness' ).min( 0.01 ).max( 2 ).onChange( updateParameters );

			}

			function updateParameters() {

				aoPass.distanceExponent.value = params.distanceExponent;
				aoPass.distanceFallOff.value = params.distanceFallOff;
				aoPass.radius.value = params.radius;
				aoPass.scale.value = params.scale;
				aoPass.thickness.value = params.thickness;

			}

			function onWindowResize() {

				const width = window.innerWidth;
				const height = window.innerHeight;

				camera.aspect = width / height;
				camera.updateProjectionMatrix();

				renderer.setSize( width, height );

			}

			function animate() {

				controls.update();

				stats.update();

				postProcessing.render();

			}

		</script>
	</body>
</html>