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


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgpu - radial blur</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<meta property="og:title" content="three.js webgpu - radial blur">
		<meta property="og:type" content="website">
		<meta property="og:url" content="https://threejs.org/examples/webgpu_postprocessing_radial_blur.html">
		<meta property="og:image" content="https://threejs.org/examples/screenshots/webgpu_postprocessing_radial_blur.jpg">
		<link type="text/css" rel="stylesheet" href="example.css">
	</head>

	<body>

		<div id="info">
			<a href="https://threejs.org/" target="_blank" rel="noopener" class="logo-link"></a>

			<div class="title-wrapper">
				<a href="https://threejs.org/" target="_blank" rel="noopener">three.js</a><span>Radial Blur</span>
			</div>

			<small>Radial Blur for faked light shafts.</small>
		</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 { float, int, pass, uniform } from 'three/tsl';
			import { radialBlur } from 'three/addons/tsl/display/radialBlur.js';

			import { Inspector } from 'three/addons/inspector/Inspector.js';

			const params = {
				enabled: true,
				animated: true
			};

			let camera, scene, renderer, timer, group;
			let renderPipeline;

			init();

			async function init() {

				camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.1, 200 );
				camera.position.z = 50;

				scene = new THREE.Scene();
				scene.background = new THREE.Color( 0x000000 );

				timer = new THREE.Timer();

				//

				const hemiLight = new THREE.HemisphereLight( 0xffffff, 0x8d8d8d );
				hemiLight.position.set( 0, 1000, 0 );
				scene.add( hemiLight );

				const pointLight = new THREE.PointLight( 0xffffff, 1000 );
				pointLight.position.set( 0, 0, 0 );
				scene.add( pointLight );

				//

				group = new THREE.Group();

				const geometry = new THREE.TetrahedronGeometry();
				const material = new THREE.MeshStandardMaterial( { flatShading: true } );

				const mesh = new THREE.InstancedMesh( geometry, material, 100 );
				const dummy = new THREE.Object3D();
				const col = new THREE.Color();
				const center = new THREE.Vector2();

				for ( let i = 0; i < mesh.count; i ++ ) {

					dummy.position.x = Math.random() * 50 - 25;
					dummy.position.y = Math.random() * 50 - 25;
					dummy.position.z = Math.random() * 50 - 25;

					center.set( dummy.position.x, dummy.position.y );

					// make sure tetrahedrons are not positioned at the origin

					if ( center.length() < 6 ) {

						center.normalize().multiplyScalar( 6 );
						dummy.position.x = center.x;
						dummy.position.y = center.y;

					}

					dummy.scale.setScalar( Math.random() * 2 + 1 );

					dummy.rotation.x = Math.random() * Math.PI;
					dummy.rotation.y = Math.random() * Math.PI;
					dummy.rotation.z = Math.random() * Math.PI;

					dummy.updateMatrix();
					mesh.setMatrixAt( i, dummy.matrix );

					col.setHSL( 0.55 + ( i / mesh.count ) * 0.15, 1, 0.2 );

					mesh.setColorAt( i, col );

				}

				group.add( mesh );
				scene.add( group );

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

				// post processing

				renderPipeline = new THREE.RenderPipeline( renderer );

				const scenePass = pass( scene, camera );

				const weightUniform = uniform( float( 0.9 ) );
				const decayUniform = uniform( float( 0.95 ) );
				const exposureUniform = uniform( int( 5 ) );
				const countUniform = uniform( int( 32 ) );

				const blurPass = radialBlur( scenePass, { weight: weightUniform, decay: decayUniform, count: countUniform, exposure: exposureUniform } );

				renderPipeline.outputNode = blurPass;

				//

				window.addEventListener( 'resize', onWindowResize );

				//

				const gui = renderer.inspector.createParameters( 'Settings' );
				gui.add( weightUniform, 'value', 0, 1 ).name( 'weight' );
				gui.add( decayUniform, 'value', 0, 1 ).name( 'decay' );
				gui.add( countUniform, 'value', 16, 64, 1 ).name( 'sample count' );
				gui.add( exposureUniform, 'value', 1, 10 ).name( 'exposure' );
				gui.add( params, 'enabled' ).onChange( ( value ) => {
			
					if ( value === true ) {

						renderPipeline.outputNode = blurPass;

					} else {

						renderPipeline.outputNode = scenePass;

					}

					renderPipeline.needsUpdate = true;

				} );
				gui.add( params, 'animated' );

			}

			function onWindowResize() {

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

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

			}

			//

			function animate() {

				timer.update();
				const delta = timer.getDelta();

				if ( params.animated === true ) {

					group.rotation.y += delta * 0.1;

				}

				renderPipeline.render();

			}

		</script>

	</body>
</html>