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>threejs webgl - node material - custom size hdr environment mapping</title>
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
		<style>
			body {
				color: #fff;
				font-family:Monospace;
				font-size:13px;
				text-align:center;

				background-color: #000;

				margin: 0px;
				overflow: hidden;
			}
			a { color: #00f }

			#info {
				position: absolute;
				top: 0px; width: 100%;
				padding: 5px;
			}
		</style>
	</head>
	<body>

		<div id="container"></div>
		<div id="info"><a href="http://threejs.org" target="_blank" rel="noopener">threejs</a> - High dynamic range (RGBE) Image-based Lighting (IBL)<br />using run-time generated pre-filtered roughness mipmaps (PMREM)<br/>
			Created by Prashant Sharma and <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 {
				StandardNodeMaterial,
				FloatNode,
				OperatorNode,
				TextureNode,
				TextureCubeNode
			} from './jsm/nodes/Nodes.js';

			var params = {
				textureSize: 1024,
				roughness: 0.0,
				metalness: 0.0,
				exposure: 1.0,
				intensity: 1.0,
				animate: true,
				debug: false
			};

			var container, stats;
			var camera, scene, renderer, controls;
			var nodeMaterial, nodeTexture, nodeTextureSize, nodeTextureIntensity, torusMesh, planeMesh;
			var hdrCubeRenderTarget;
			var hdrCubeMap;

			init();
			animate();

			function generate( textureSize ) {

				nodeTextureSize.value = textureSize;

				var pmremGenerator = new PMREMGenerator( hdrCubeMap, undefined, textureSize / 4 );
				pmremGenerator.update( renderer );

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

				hdrCubeRenderTarget = pmremCubeUVPacker.CubeUVRenderTarget;
				nodeTexture.value = hdrCubeRenderTarget.texture;

				hdrCubeMap.magFilter = THREE.LinearFilter;
				hdrCubeMap.needsUpdate = true;

				planeMesh.material.map = hdrCubeRenderTarget.texture;
				planeMesh.material.needsUpdate = true;

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

			}

			function init() {

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

				camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 1000 );
				camera.position.set( 0, 0, 120 );

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

				renderer = new THREE.WebGLRenderer();
				renderer.toneMapping = THREE.LinearToneMapping;

				//

				var geometry = new THREE.TorusKnotBufferGeometry( 18, 8, 150, 20 );

				nodeMaterial = new StandardNodeMaterial();
				nodeMaterial.color.value = new THREE.Color( 0xffffff );
				nodeMaterial.roughness.value = params.metalness;
				nodeMaterial.metalness.value = params.roguhness;
				nodeMaterial.visible = false;

				nodeTexture = new TextureNode();
				nodeTextureSize = new FloatNode( 1024 );
				nodeTextureIntensity = new FloatNode( 1 );

				nodeMaterial.environment = new OperatorNode( new TextureCubeNode( nodeTexture, nodeTextureSize ), nodeTextureIntensity, OperatorNode.MUL );

				torusMesh = new THREE.Mesh( geometry, nodeMaterial );
				scene.add( torusMesh );

				planeMesh = new THREE.Mesh( new THREE.PlaneBufferGeometry( 200, 200 ), new THREE.MeshBasicMaterial() );
				planeMesh.position.y = - 50;
				planeMesh.rotation.x = - Math.PI * 0.5;
				scene.add( planeMesh );

				var hdrUrls = [ 'px.hdr', 'nx.hdr', 'py.hdr', 'ny.hdr', 'pz.hdr', 'nz.hdr' ];
				hdrCubeMap = new HDRCubeTextureLoader()
					.setPath( './textures/cube/pisaHDR/' )
					.setDataType( THREE.UnsignedByteType )
					.load( hdrUrls, function () {

						generate( params.textureSize );

						nodeMaterial.visible = true;

					} );

				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				container.appendChild( renderer.domElement );

				//renderer.toneMapping = THREE.ReinhardToneMapping;
				renderer.gammaInput = true; // ???
				renderer.gammaOutput = true;

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

				controls = new OrbitControls( camera, renderer.domElement );
				controls.minDistance = 50;
				controls.maxDistance = 300;

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

				var gui = new GUI();

				gui.add( params, 'textureSize', [ 128, 256, 512, 1024, 2048, 4096 ] );
				gui.add( params, 'roughness', 0, 1, 0.01 );
				gui.add( params, 'metalness', 0, 1, 0.01 );
				gui.add( params, 'exposure', 0, 2, 0.01 );
				gui.add( params, 'intensity', 0, 2, 0.01 );
				gui.add( params, 'animate', true );
				gui.add( params, 'debug', false );
				gui.open();

			}

			function onWindowResize() {

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

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

				renderer.setSize( width, height );

			}

			function animate() {

				requestAnimationFrame( animate );

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

			}

			function render() {

				torusMesh.material.roughness.value = params.roughness;
				torusMesh.material.metalness.value = params.metalness;

				nodeTextureIntensity.value = params.intensity;

				if ( nodeTextureSize.value !== params.textureSize ) {

					generate( params.textureSize );

				}

				if ( params.animate ) {

					torusMesh.rotation.y += 0.005;

				}

				planeMesh.visible = params.debug;

				scene.background = hdrCubeMap;
				renderer.toneMappingExposure = params.exposure;

				renderer.render( scene, camera );

			}

		</script>

	</body>
</html>