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+<!DOCTYPE html>
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+<html lang="en">
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+ <head>
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+ <title>three.js webgl - postprocessing - pixel shader</title>
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+ <meta charset="utf-8">
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+ <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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+ <style>
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+ body {
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+ background-color: #000000;
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+ margin: 0px;
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+ overflow: hidden;
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+ font-family:Monospace;
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+ font-size:13px;
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+ /*text-align:center;*/
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+ font-weight: lighter;
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+ }
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+
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+ a {
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+ color: gray;
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+ font-weight: bold;
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+ }
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+
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+ #info {
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+ color: gray;
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+ position: absolute;
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+ bottom: 0px;
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+ width: 100%;
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+ padding: 15px;
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+ }
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+
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+ .dg.ac {
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+ z-index: 1 !important;
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+ }
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+ </style>
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+ </head>
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+ <body>
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+
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+ <script src="../build/three.js"></script>
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+
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+ <script src="js/shaders/CopyShader.js"></script>
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+ <script src="js/shaders/PixelShader.js"></script>
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+ <script src="js/postprocessing/EffectComposer.js"></script>
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+ <script src="js/postprocessing/RenderPass.js"></script>
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+ <script src="js/postprocessing/ShaderPass.js"></script>
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+ <script src="js/controls/TrackballControls.js"></script>
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+ <script src='js/libs/dat.gui.min.js'></script>
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+
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+ <div id="container"></div>
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+
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+ <div id="info">
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+ <a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - pixel shader example<br/>
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+ shader by <a href="http://wongbryan.github.io">wongbryan</a>
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+ </div>
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+
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+ <script>
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+
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+ var camera, scene, renderer, gui, composer;
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+ var pixelPass, params;
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+
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+ var geomData = [], group;
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+
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+ init();
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+ animate();
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+
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+ function updateGUI() {
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+
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+ pixelPass.uniforms.pixelSize.value = params.pixelSize;
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+
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+ }
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+
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+ function resize() {
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+
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+ camera.aspect = window.innerWidth / window.innerHeight;
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+ camera.updateProjectionMatrix();
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+
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+ pixelPass.uniforms.resolution.value.set( window.innerWidth, window.innerHeight ).multiplyScalar( window.devicePixelRatio );
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+
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+ }
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+
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+ function init() {
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+
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+ var container = document.getElementById( 'container' );
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+ renderer = new THREE.WebGLRenderer( { antialias: true } );
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+ renderer.setPixelRatio( window.devicePixelRatio );
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+ renderer.setClearColor( 0xbfe7ff );
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+ container.appendChild( renderer.domElement );
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+
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+ camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 1, 10000 );
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+ camera.position.set( 0, 0, 30 );
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+ controls = new THREE.TrackballControls( camera, renderer.domElement );
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+ controls.rotateSpeed = 2.0;
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+ controls.panSpeed = 0.8;
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+ controls.zoomSpeed = 1.5;
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+
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+ scene = new THREE.Scene();
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+
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+ var hemisphereLight = new THREE.HemisphereLight( 0xfceafc, 0x000000, .8 );
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+ scene.add( hemisphereLight );
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+
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+ var dirLight = new THREE.DirectionalLight( 0xffffff, .5 );
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+ dirLight.position.set( 150, 75, 150 );
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+ scene.add( dirLight );
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+
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+ var dirLight2 = new THREE.DirectionalLight( 0xffffff, .2 );
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+ dirLight2.position.set( - 150, 75, - 150 );
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+ scene.add( dirLight2 );
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+
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+ var dirLight3 = new THREE.DirectionalLight( 0xffffff, .1 );
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+ dirLight3.position.set( 0, 125, 0 );
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+ scene.add( dirLight3 );
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+
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+ scene.add( hemisphereLight );
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+ scene.add( dirLight );
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+ scene.add( dirLight2 );
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+ scene.add( dirLight3 );
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+
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+ geomData.push( new THREE.SphereGeometry( 1, 64, 64 ) );
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+ geomData.push( new THREE.BoxGeometry( 1, 1, 1 ) );
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+ geomData.push( new THREE.ConeGeometry( 1, 1, 32 ) );
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+ geomData.push( new THREE.TetrahedronGeometry( 1 ) );
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+ geomData.push( new THREE.TorusKnotGeometry( 1, .4 ) );
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+
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+ var numShapes = 25;
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+ group = new THREE.Group();
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+
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+ for ( var i = 0; i < numShapes; i ++ ) {
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+
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+ var geom = geomData[ Math.floor( Math.random() * geomData.length ) ];
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+ var color = new THREE.Color();
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+ color.setHSL( Math.random(), .7 + .2 * Math.random(), .5 + .1 * Math.random() );
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+ var mat = new THREE.MeshPhongMaterial( { color: color, shininess: 200 } );
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+ var mesh = new THREE.Mesh( geom, mat );
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+ var s = 4 + Math.random() * 10;
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+ mesh.scale.set( s, s, s );
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+
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+ mesh.position.set( Math.random() - 0.5, Math.random() - 0.5, Math.random() - 0.5 ).normalize();
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+ mesh.position.multiplyScalar( Math.random() * 200 );
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+ mesh.rotation.set( Math.random() * 2, Math.random() * 2, Math.random() * 2 );
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+ group.add( mesh );
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+
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+ }
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+
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+ scene.add( group );
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+
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+ composer = new THREE.EffectComposer( renderer );
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+ composer.addPass( new THREE.RenderPass( scene, camera ) );
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+
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+ pixelPass = new THREE.ShaderPass( THREE.PixelShader );
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+ pixelPass.uniforms.resolution.value = new THREE.Vector2( window.innerWidth, window.innerHeight );
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+ pixelPass.uniforms.resolution.value.multiplyScalar( window.devicePixelRatio );
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+ pixelPass.renderToScreen = true;
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+ composer.addPass( pixelPass );
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+
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+ window.addEventListener( 'resize', resize );
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+
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+ params = {
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+ pixelSize: 128,
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+ postprocessing: true
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+ };
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+ gui = new dat.GUI();
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+ gui.add( params, 'pixelSize' ).min( 2 ).max( 256 ).step( 2 );
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+ gui.add( params, 'postprocessing' );
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+
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+ }
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+
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+ function update() {
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+
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+ controls.update();
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+ updateGUI();
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+ group.rotation.y += .0015;
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+ group.rotation.z += .001;
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+
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+ }
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+
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+ function animate() {
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+
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+ update();
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+
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+ if ( params.postprocessing ) {
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+
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+ composer.render();
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+
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+ } else {
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+
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+ renderer.render( scene, camera );
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+
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+ }
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+
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+ window.requestAnimationFrame( animate );
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+
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+ }
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+
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+ </script>
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+ </body>
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+</html>
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Mr.doob