samien
/
three.js
mirror of https://github.com/mrdoob/three.js.git


			
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							<!DOCTYPE html>
<html lang="en">

<head>

	<head>
		<title>three.js webgpu - postprocessing - Screen Space Reflection</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="container"></div>
	<div id="info">
		<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> -
		SSR demo by <a href="https://github.com/gonnavis" target="_blank">Vis</a>.<br />
	</div>

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

	<script type="module">
		import * as THREE from 'three';
		import { pass, mrt, output, transformedNormalView, metalness, vec4/*, uniform*/ } from 'three/tsl';
		import { ssr } from 'three/addons/tsl/display/SSRNode.js';

		import { DRACOLoader } from 'three/addons/loaders/DRACOLoader.js';
		import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
		import { RoomEnvironment } from 'three/addons/environments/RoomEnvironment.js';
		import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
		import Stats from 'three/addons/libs/stats.module.js';

		const params = {
			maxDistance: 0.1,
			opacity: 1,
			thickness: 0.018,
			enabled: true,
			autoRotate: false
		};

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

		// Configure and create Draco decoder.
		const dracoLoader = new DRACOLoader();
		dracoLoader.setDecoderPath( 'jsm/libs/draco/' );
		dracoLoader.setDecoderConfig( { type: 'js' } );

		init();

		async function init() {

			camera = new THREE.PerspectiveCamera( 35, window.innerWidth / window.innerHeight, 0.1, 15 );
			camera.position.set( 0.1, 0.2, 0.5 );

			scene = new THREE.Scene();
			scene.fog = new THREE.Fog( 0x666666, 1, 4 );

			// Ground
			const plane = new THREE.Mesh(
				new THREE.PlaneGeometry( 8, 8 ),
				new THREE.MeshStandardNodeMaterial( { color: 0xcbcbcb } )
			);
		
			// any node material can write custom MRT metalness values for controlling SSR

			// plane.material.mrtNode = mrt( {
			// 	output: output,
			// 	normal: transformedNormalView,
			// 	metalness: uniform( 0.5 )
			// } );
		
			plane.rotation.x = - Math.PI / 2;
			plane.position.y = - 0.0001;
			scene.add( plane );

			dracoLoader.load( 'models/draco/bunny.drc', function ( geometry ) {

				geometry.computeVertexNormals();

				const material = new THREE.MeshStandardNodeMaterial( { color: 0xa5a5a5, metalness: 1 } );
				const mesh = new THREE.Mesh( geometry, material );
				mesh.position.y = - 0.0365;
				scene.add( mesh );

				dracoLoader.dispose();

			} );

			let geometry, material, mesh;

			geometry = new THREE.BoxGeometry( 0.05, 0.05, 0.05 );
			material = new THREE.MeshStandardNodeMaterial( { color: 'green', metalness: 0.3 } );
			mesh = new THREE.Mesh( geometry, material );
			mesh.position.set( - 0.12, 0.025, 0.015 );
			scene.add( mesh );

			geometry = new THREE.IcosahedronGeometry( .025, 4 );
			material = new THREE.MeshStandardNodeMaterial( { color: 'cyan', metalness: 0.5 } );
			mesh = new THREE.Mesh( geometry, material );
			mesh.position.set( - 0.05, 0.025, 0.08 );
			scene.add( mesh );
		
			geometry = new THREE.ConeGeometry( 0.025, 0.05, 64 );
			material = new THREE.MeshStandardNodeMaterial( { color: 'yellow', metalness: 0.4 } );
			mesh = new THREE.Mesh( geometry, material );
			mesh.position.set( - 0.05, 0.025, - 0.055 );
			scene.add( mesh );

			//

			renderer = new THREE.WebGPURenderer();
			renderer.setPixelRatio( window.devicePixelRatio );
			renderer.setSize( window.innerWidth, window.innerHeight );
			renderer.setAnimationLoop( animate );
			document.body.appendChild( renderer.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;
			scene.environmentIntensity = 0.75;
			pmremGenerator.dispose();

			//

			postProcessing = new THREE.PostProcessing( renderer );

			const scenePass = pass( scene, camera, { minFilter: THREE.NearestFilter, magFilter: THREE.NearestFilter } );
			scenePass.setMRT( mrt( {
				output: output,
				normal: transformedNormalView,
				metalness: metalness
			} ) );

			const scenePassColor = scenePass.getTextureNode( 'output' );
			const scenePassNormal = scenePass.getTextureNode( 'normal' );
			const scenePassDepth = scenePass.getTextureNode( 'depth' );
			const scenePassMetalness = scenePass.getTextureNode( 'metalness' );

			ssrPass = ssr( scenePassColor, scenePassDepth, scenePassNormal, scenePassMetalness, camera );

			// blend SSR over beauty
		
			const outputNode = vec4( scenePass.rgb.mul( ssrPass.a.oneMinus() ).add( ssrPass.rgb.mul( ssrPass.a ) ), scenePass.a );

			postProcessing.outputNode = outputNode;


			//

			controls = new OrbitControls( camera, renderer.domElement );
			controls.enableDamping = true;
			controls.target.set( 0, 0.05, 0 );
			controls.update();

			// stats

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

			window.addEventListener( 'resize', onWindowResize );

			// GUI

			gui = new GUI();
			gui.add( params, 'maxDistance' ).min( 0 ).max( 1 ).onChange( updateParameters );
			gui.add( params, 'opacity' ).min( 0 ).max( 1 ).onChange( updateParameters );
			gui.add( params, 'thickness' ).min( 0 ).max( 0.1 ).onChange( updateParameters );
			gui.add( params, 'enabled' ).onChange( () => {

				if ( params.enabled === true ) {

					postProcessing.outputNode = outputNode;

				} else {

					postProcessing.outputNode = scenePass;

				}

				postProcessing.needsUpdate = true;

			} );
			gui.add( params, 'autoRotate' );
		
			updateParameters();

		}

		function updateParameters() {

			ssrPass.maxDistance.value = params.maxDistance;
			ssrPass.opacity.value = params.opacity;
			ssrPass.thickness.value = params.thickness;


		}

		function onWindowResize() {

			camera.aspect = window.innerWidth / window.innerHeight;
			camera.updateProjectionMatrix();

			renderer.setSize( window.innerWidth, window.innerHeight );

		}

		function animate() {

			stats.begin();

			controls.autoRotate = params.autoRotate;
		
			controls.update();

			postProcessing.render();

			stats.end();

		}

	</script>
</body>

</html>