javascript
/
three.js
镜像自地址 https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - inline tone mapping</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="http://threejs.org" target="_blank" rel="noopener">threejs</a> - Inline Tone Mapping (within a Material's fragment shader) without<br/>using a pre-processing step or float/half buffers by <a href="http://clara.io/" target="_blank" rel="noopener">Ben Houston</a>.</div>

		<script type="module">

			import * as THREE from '../build/three.module.js';

			import Stats from './jsm/libs/stats.module.js';

			import { GUI } from './jsm/libs/dat.gui.module.js';
			import { OrbitControls } from './jsm/controls/OrbitControls.js';
			import { HDRCubeTextureLoader } from './jsm/loaders/HDRCubeTextureLoader.js';
			import { PMREMGenerator } from './jsm/pmrem/PMREMGenerator.js';
			import { PMREMCubeUVPacker } from './jsm/pmrem/PMREMCubeUVPacker.js';

			import { EffectComposer } from './jsm/postprocessing/EffectComposer.js';
			import { RenderPass } from './jsm/postprocessing/RenderPass.js';
			import { ShaderPass } from './jsm/postprocessing/ShaderPass.js';
			import { CopyShader } from './jsm/shaders/CopyShader.js';

			var container, stats;
			var params = {
				opacity: 1.0,
				roughness: 1.0,
				bumpScale: 1.0,
				exposure: 3.0,
				whitePoint: 5.0,
				toneMapping: "Uncharted2",
				renderMode: "Renderer"
			};

			var toneMappingOptions = {
				None: THREE.NoToneMapping,
				Linear: THREE.LinearToneMapping,
				Reinhard: THREE.ReinhardToneMapping,
				Uncharted2: THREE.Uncharted2ToneMapping,
				Cineon: THREE.CineonToneMapping,
				ACESFilmic: THREE.ACESFilmicToneMapping
			};

			var camera, scene, renderer, mesh;
			var composer;
			var standardMaterial, floorMaterial;

			init();
			animate();

			function init() {

				container = document.createElement( 'div' );
				document.body.appendChild( container );

				camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 2000 );
				camera.position.set( 0.0, 40, 40 * 3.5 );

				scene = new THREE.Scene();

				renderer = new THREE.WebGLRenderer();

				standardMaterial = new THREE.MeshStandardMaterial( {
					bumpScale: - 0.05,
					color: 0xffffff,
					metalness: 0.9,
					roughness: 0.8,
					premultipliedAlpha: true,
					transparent: true
				} );

				var textureLoader = new THREE.TextureLoader();
				textureLoader.load( "textures/brick_diffuse.jpg", function ( map ) {

					map.wrapS = THREE.RepeatWrapping;
					map.wrapT = THREE.RepeatWrapping;
					map.encoding = THREE.sRGBEncoding;
					map.anisotropy = 4;
					map.repeat.set( 9, 0.5 );
					standardMaterial.map = map;
					standardMaterial.needsUpdate = true;

				} );

				textureLoader.load( "textures/brick_bump.jpg", function ( map ) {

					map.wrapS = THREE.RepeatWrapping;
					map.wrapT = THREE.RepeatWrapping;
					map.anisotropy = 4;
					map.repeat.set( 9, 0.5 );
					standardMaterial.bumpMap = map;
					standardMaterial.needsUpdate = true;

				} );

				textureLoader.load( "textures/brick_roughness.jpg", function ( map ) {

					map.wrapS = THREE.RepeatWrapping;
					map.wrapT = THREE.RepeatWrapping;
					map.anisotropy = 4;
					map.repeat.set( 9, 0.5 );
					standardMaterial.roughnessMap = map;
					standardMaterial.needsUpdate = true;

				} );

				var geometry = new THREE.TorusKnotBufferGeometry( 18, 8, 150, 20 );
				mesh = new THREE.Mesh( geometry, standardMaterial );
				mesh.castShadow = true;
				mesh.receiveShadow = true;
				scene.add( mesh );

				floorMaterial = new THREE.MeshStandardMaterial( {
					map: null,
					roughnessMap: null,
					color: 0x888888,
					metalness: 0.0,
					roughness: 1.0,
					side: THREE.BackSide
				} );

				var geometry = new THREE.BoxBufferGeometry( 200, 200, 200 );
				var floor = new THREE.Mesh( geometry, floorMaterial );
				floor.position.y = 50;
				floor.rotation.x = - Math.PI * 0.5;
				floor.receiveShadow = true;
				scene.add( floor );

				// Materials
				var hdrpath = "textures/cube/pisaHDR/";
				var hdrformat = '.hdr';
				var hdrUrls = [
					hdrpath + 'px' + hdrformat, hdrpath + 'nx' + hdrformat,
					hdrpath + 'py' + hdrformat, hdrpath + 'ny' + hdrformat,
					hdrpath + 'pz' + hdrformat, hdrpath + 'nz' + hdrformat
				];

				new HDRCubeTextureLoader()
					.setDataType( THREE.UnsignedByteType )
					.load( hdrUrls, function ( hdrCubeMap ) {

						var pmremGenerator = new PMREMGenerator( hdrCubeMap );
						pmremGenerator.update( renderer );

						var pmremCubeUVPacker = new PMREMCubeUVPacker( pmremGenerator.cubeLods );
						pmremCubeUVPacker.update( renderer );

						standardMaterial.envMap = pmremCubeUVPacker.CubeUVRenderTarget.texture;
						standardMaterial.needsUpdate = true;

						hdrCubeMap.dispose();
						pmremGenerator.dispose();
						pmremCubeUVPacker.dispose();

					} );

				// Lights

				scene.add( new THREE.HemisphereLight( 0x111111, 0x000000 ) );

				var spotLight = new THREE.SpotLight( 0xffffff );
				spotLight.position.set( 50, 100, 50 );
				spotLight.angle = Math.PI / 7;
				spotLight.decay = 2;
				spotLight.distance = 300;
				spotLight.penumbra = 0.8;
				spotLight.castShadow = true;
				scene.add( spotLight );

				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.shadowMap.enabled = true;
				container.appendChild( renderer.domElement );

				renderer.gammaOutput = true;

				composer = new EffectComposer( renderer );
				composer.setSize( window.innerWidth, window.innerHeight );

				var renderScene = new RenderPass( scene, camera );
				composer.addPass( renderScene );

				var copyPass = new ShaderPass( CopyShader );
				composer.addPass( copyPass );

				stats = new Stats();
				container.appendChild( stats.dom );

				var controls = new OrbitControls( camera, renderer.domElement );

				window.addEventListener( 'resize', onWindowResize, false );

				var gui = new GUI();

				gui.add( params, 'toneMapping', Object.keys( toneMappingOptions ) );
				gui.add( params, 'exposure', 0, 10 );
				gui.add( params, 'whitePoint', 0, 10 );
				gui.add( params, 'opacity', 0, 1 );
				gui.add( params, 'renderMode', [ 'Renderer', 'Composer' ] );
				gui.open();

			}

			function onWindowResize() {

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

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

				renderer.setSize( width, height );
				composer.setSize( width, height );

			}

			//

			function animate() {

				requestAnimationFrame( animate );

				stats.begin();
				render();
				stats.end();

			}

			function render() {

				standardMaterial.roughness = params.roughness;
				standardMaterial.bumpScale = - 0.05 * params.bumpScale;
				standardMaterial.opacity = params.opacity;

				if ( renderer.toneMapping !== toneMappingOptions[ params.toneMapping ] ) {

					renderer.toneMapping = toneMappingOptions[ params.toneMapping ];
					standardMaterial.needsUpdate = true;
					floorMaterial.needsUpdate = true;

				}

				renderer.toneMappingExposure = params.exposure;
				renderer.toneMappingWhitePoint = params.whitePoint;

				mesh.rotation.y += 0.005;

				if ( params.renderMode === "Composer" ) {

					composer.render();

				} else {

					renderer.render( scene, camera );

				}

			}

		</script>

	</body>
</html>