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 - postprocessing - godrays</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 - postprocessing - godrays">
		<meta property="og:type" content="website">
		<meta property="og:url" content="https://threejs.org/examples/webgpu_postprocessing_godrays.html">
		<meta property="og:image" content="https://threejs.org/examples/screenshots/webgpu_postprocessing_godrays.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>Godrays</span>
			</div>

			<small>
				Screen-space raymarched Godrays.
			</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 { pass, uniform, float, int, color } from 'three/tsl';
			import { godrays } from 'three/addons/tsl/display/GodraysNode.js';
			import { bilateralBlur } from 'three/addons/tsl/display/BilateralBlurNode.js';
			import { depthAwareBlend } from 'three/addons/tsl/display/depthAwareBlend.js';

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

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

			let camera, controls, scene, renderer, renderPipeline;

			const params = {
				enabledBlur: true,
			};

			init();

			async function init() {

				camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 0.1, 1000 );
				camera.position.set( - 175, 50, 0 );

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

				// asset

				const loader = new GLTFLoader();
				const gltf = await loader.loadAsync( 'models/gltf/godrays_demo.glb' );
				scene.add( gltf.scene );

				const pillars = gltf.scene.getObjectByName( 'concrete' );
				pillars.material = new THREE.MeshStandardMaterial( {
					color: 0x333333,
				} );

				const base = gltf.scene.getObjectByName( 'base' );
				base.material = new THREE.MeshStandardMaterial( {
					color: 0x333333,
					side: THREE.DoubleSide,
				} );

				// lights

				const lightPos = new THREE.Vector3( 0, 50, 0 );
				const lightSphereMaterial = new THREE.MeshBasicMaterial( {
					color: 0xffffff,
				} );
				const lightSphere = new THREE.Mesh( new THREE.SphereGeometry( 0.5, 16, 16 ), lightSphereMaterial );
				lightSphere.position.copy( lightPos );
				scene.add( lightSphere );

				scene.add( new THREE.AmbientLight( 0xcccccc, 0.4 ) );

				const pointLight = new THREE.PointLight( 0xf6287d, 10000 );
				pointLight.castShadow = true;
				pointLight.shadow.bias = - 0.00001;
				pointLight.shadow.mapSize.width = 2048;
				pointLight.shadow.mapSize.height = 2048;
				pointLight.position.copy( lightPos );
				scene.add( pointLight );

				setupBackdrop();

				// shadow setup

				scene.traverse( obj => {

					if ( obj.isMesh === true ) {

						obj.castShadow = true;
						obj.receiveShadow = true;

					}

				} );

				lightSphere.castShadow = false;
				lightSphere.receiveShadow = false;

				// renderer

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

				// post processing

				renderPipeline = new THREE.RenderPipeline( renderer );

				// beauty

				const scenePass = pass( scene, camera );
				const scenePassColor = scenePass.getTextureNode( 'output' );
				const scenePassDepth = scenePass.getTextureNode( 'depth' );

				// godrays
			
				const godraysPass = godrays( scenePassDepth, camera, pointLight );
				const godraysPassColor = godraysPass.getTextureNode();

				// blur

				const blurPass = bilateralBlur( godraysPassColor );
				const blurPassColor = blurPass.getTextureNode();

				// composite

				const blendColor = uniform( color( 0xf6287d ) );
				const edgeRadius = uniform( int( 2 ) );
				const edgeStrength = uniform( float( 2 ) );

				const outputBlurred = depthAwareBlend( scenePassColor, blurPassColor, scenePassDepth, camera, { blendColor, edgeRadius, edgeStrength } );
				const outputRaw = depthAwareBlend( scenePassColor, godraysPassColor, scenePassDepth, camera, { blendColor, edgeRadius, edgeStrength } );
			
				renderPipeline.outputNode = outputBlurred;

				// GUI

				const gui = renderer.inspector.createParameters( 'Settings' );
				const godraysFolder = gui.addFolder( 'Godrays' );
				godraysFolder.add( godraysPass.raymarchSteps, 'value', 24, 120 ).step( 1 ).name( 'raymarch steps' );
				godraysFolder.add( godraysPass.density, 'value', 0, 1 ).name( 'density' );
				godraysFolder.add( godraysPass.maxDensity, 'value', 0, 1 ).name( 'max density' );
				godraysFolder.add( godraysPass.distanceAttenuation, 'value', 0, 5 ).name( 'distance attenuation' );
			
				const compositeFolder = gui.addFolder( 'composite' );
				compositeFolder.add( edgeRadius, 'value', 0, 5, 1 ).name( 'edge radius' );
				compositeFolder.add( edgeStrength, 'value', 0, 5 ).name( 'edge strength' );
			
				const blurFolder = gui.addFolder( 'blur' );
				blurFolder.add( params, 'enabledBlur' ).name( 'enabled' ).onChange( ( value ) => {

					if ( value === true ) {

						renderPipeline.outputNode = outputBlurred;

					} else {

						renderPipeline.outputNode = outputRaw;

					}

					renderPipeline.needsUpdate = true;

				} );

				//

				controls = new OrbitControls( camera, renderer.domElement );
				controls.target.set( 0, 0.5, 0 );
				controls.enableDamping = true;
				controls.maxDistance = 200;
				controls.update();

				window.addEventListener( 'resize', onWindowResize );

			}


			function setupBackdrop() {

				 const backdropDistance = 200;
				// Add backdrop walls `backdropDistance` units away from the origin
				const backdropGeometry = new THREE.PlaneGeometry( 400, 200 );
				const backdropMaterial = new THREE.MeshBasicMaterial( {
					color: 0x000000,
					side: THREE.DoubleSide,
				} );
				const backdropLeft = new THREE.Mesh( backdropGeometry, backdropMaterial );
				backdropLeft.position.set( - backdropDistance, 100, 0 );
				backdropLeft.rotateY( Math.PI / 2 );
				scene.add( backdropLeft );
			
				const backdropRight = new THREE.Mesh( backdropGeometry, backdropMaterial );
				backdropRight.position.set( backdropDistance, 100, 0 );
				backdropRight.rotateY( Math.PI / 2 );
				scene.add( backdropRight );
			
				const backdropFront = new THREE.Mesh( backdropGeometry, backdropMaterial );
				backdropFront.position.set( 0, 100, - backdropDistance );
				scene.add( backdropFront );
			
				const backdropBack = new THREE.Mesh( backdropGeometry, backdropMaterial );
				backdropBack.position.set( 0, 100, backdropDistance );
				scene.add( backdropBack );
			
				const backdropTop = new THREE.Mesh( backdropGeometry, backdropMaterial );
				backdropTop.position.set( 0, 200, 0 );
				backdropTop.rotateX( Math.PI / 2 );
				backdropTop.scale.set( 3, 6, 1 );
				scene.add( backdropTop );

			}

			function onWindowResize() {

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

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

			}

			function animate() {

				controls.update();

				renderPipeline.render();


			}

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