javascript
/
three.js
mirror of https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
	<head>
		<title>three.js webgl - materials - RGBM 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">
		<link type="text/css" rel="stylesheet" href="main.css">
	</head>
	<body>

		<div id="info">
			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl RGBM texture loader example
		</div>

		<script src="../build/three.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 );

				new THREE.TextureLoader().load( 'textures/memorial.png', function ( texture ) {

					texture.encoding = THREE.RGBM16Encoding;

					texture.minFilter = THREE.LinearFilter;
					texture.magFilter = THREE.LinearFilter;
					texture.flipY = true;

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

					var quad = new THREE.PlaneBufferGeometry( 1.5 * texture.width / texture.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>