javascript
/
three.js
镜像来自 https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - materials - HDR texture loader</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;
				font-weight: bold;

				background-color: #000;
				margin: 0px;
				overflow: hidden;
			}

			#info {
				color:#fff;
				position: absolute;
				top: 0px; width: 100%;
				padding: 5px;

			}

			a { color: red; }

		</style>
	</head>
	<body>

		<div id="info">
			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl HDR (RGBE) texture loader example<br/>
			Image courtesy of <a href="http://www.pauldebevec.com/Research/HDR/" target="_blank" rel="noopener">Paul Debevec</a>.
		</div>

		<script src="../build/three.js"></script>
		<script src="js/loaders/RGBELoader.js"></script>

		<script src="js/libs/dat.gui.min.js"></script>

		<script src="js/WebGL.js"></script>

		<script>

			if ( WEBGL.isWebGLAvailable() === false ) {

				document.body.appendChild( WEBGL.getWebGLErrorMessage() );

			}

			var params = {
				exposure: 2.0
			};

			var renderer, scene, camera;

			init();

			function init() {

				renderer = new THREE.WebGLRenderer();
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				document.body.appendChild( renderer.domElement );

				renderer.toneMapping = THREE.ReinhardToneMapping;
				renderer.toneMappingExposure = params.exposure;

				renderer.gammaOutput = true;

				scene = new THREE.Scene();

				var aspect = window.innerWidth / window.innerHeight;

				camera = new THREE.OrthographicCamera( - aspect, aspect, 1, - 1, 0, 1 );

				var type = THREE.UnsignedByteType;
				//var type = THREE.FloatType;

				new THREE.RGBELoader()
					.setType( type )
					.load( 'textures/memorial.hdr', function ( texture, textureData ) {

						switch ( type ) {

							case THREE.UnsignedByteType:

								texture.encoding = THREE.RGBEEncoding;
								texture.minFilter = THREE.NearestFilter;
								texture.magFilter = THREE.NearestFilter;
								break;

							case THREE.FloatType:

								texture.encoding = THREE.LinearEncoding;
								texture.minFilter = THREE.LinearFilter;
								texture.magFilter = THREE.LinearFilter;
								break;

						}

						texture.generateMipmaps = false;
						texture.flipY = true;

						//console.log( textureData );
						//console.log( texture );

						var material = new THREE.MeshBasicMaterial( { map: texture } );

						var quad = new THREE.PlaneBufferGeometry( 1.5 * textureData.width / textureData.height, 1.5 );

						var mesh = new THREE.Mesh( quad, material );

						scene.add( mesh );

						render();

					} );

				//

				var gui = new dat.GUI();

				gui.add( params, 'exposure', 0, 4, 0.01 ).onChange( render );
				gui.open();

				//

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

			}

			function onWindowResize() {

				var aspect = window.innerWidth / window.innerHeight;

				var frustumHeight = camera.top - camera.bottom;

				camera.left = - frustumHeight * aspect / 2;
				camera.right = frustumHeight * aspect / 2;

				camera.updateProjectionMatrix();

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

				render();

			}

			//

			function render() {

				renderer.toneMappingExposure = params.exposure;

				renderer.render( scene, camera );

			}

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