|
|
@@ -0,0 +1,252 @@
|
|
|
+<!DOCTYPE html>
|
|
|
+<html lang="en">
|
|
|
+ <head>
|
|
|
+ <title>threejs webgl - materials</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;
|
|
|
+ }
|
|
|
+
|
|
|
+ #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">threejs</a> - Transparency with Non-Premultipled Alpha (left) versus Premultiplied Alpha (right) with RGBA8 Buffers by <a href="http://clara.io/" target="_blank">Ben Houston</a>.</div>
|
|
|
+
|
|
|
+ <script src="../build/three.min.js"></script>
|
|
|
+ <script src="../examples/js/controls/OrbitControls.js"></script>
|
|
|
+ <script src="../src/loaders/BinaryTextureLoader.js"></script>
|
|
|
+
|
|
|
+ <script src="../examples/js/Detector.js"></script>
|
|
|
+ <script src="../examples/js/libs/stats.min.js"></script>
|
|
|
+
|
|
|
+ <script src="../examples/js/libs/dat.gui.min.js"></script>
|
|
|
+
|
|
|
+ <script src="../examples/js/postprocessing/EffectComposer.js"></script>
|
|
|
+ <script src="../examples/js/postprocessing/RenderPass.js"></script>
|
|
|
+ <script src="../examples/js/postprocessing/MaskPass.js"></script>
|
|
|
+ <script src="../examples/js/postprocessing/ShaderPass.js"></script>
|
|
|
+ <script src="../examples/js/shaders/CopyShader.js"></script>
|
|
|
+ <script src="../examples/js/shaders/FXAAShader.js"></script>
|
|
|
+ <script src="../examples/js/postprocessing/BloomPass.js"></script>
|
|
|
+ <script src="../examples/js/shaders/ConvolutionShader.js"></script>
|
|
|
+
|
|
|
+ <script>
|
|
|
+
|
|
|
+ if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
|
|
|
+
|
|
|
+ var container, stats;
|
|
|
+ var params = {
|
|
|
+ opacity: 0.5,
|
|
|
+ roughness: 1.0,
|
|
|
+ bumpScale: 0.3
|
|
|
+ };
|
|
|
+ var camera, scene, renderer, controls, objects = [];
|
|
|
+ var composer;
|
|
|
+ var standardMaterial, standardMaterialPremultiplied;
|
|
|
+
|
|
|
+ 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( { antialias: false } );
|
|
|
+
|
|
|
+ var roughnessTexture = THREE.ImageUtils.loadTexture( "../examples/textures/roughness_map.jpg" );
|
|
|
+ roughnessTexture.wrapS = THREE.RepeatWrapping;
|
|
|
+ roughnessTexture.wrapT = THREE.RepeatWrapping;
|
|
|
+ roughnessTexture.repeat.set( 9, 2 );
|
|
|
+
|
|
|
+ standardMaterial = new THREE.MeshStandardMaterial( {
|
|
|
+ map: null,
|
|
|
+ roughnessMap: roughnessTexture,
|
|
|
+ bumpScale: - 0.05,
|
|
|
+ bumpMap: roughnessTexture,
|
|
|
+ color: 0xffffff,
|
|
|
+ metalness: 0.9,
|
|
|
+ roughness: 1.0,
|
|
|
+ shading: THREE.SmoothShading,
|
|
|
+ transparent: true
|
|
|
+ } );
|
|
|
+ var geometry = new THREE.SphereGeometry( 18, 30, 30 );
|
|
|
+ var torusMesh1 = new THREE.Mesh( geometry, standardMaterial );
|
|
|
+ torusMesh1.position.x = -20.0;
|
|
|
+ torusMesh1.castShadow = true;
|
|
|
+ scene.add( torusMesh1 );
|
|
|
+ objects.push( torusMesh1 );
|
|
|
+
|
|
|
+ standardMaterialPremultiplied = new THREE.MeshStandardMaterial( {
|
|
|
+ map: null,
|
|
|
+ roughnessMap: roughnessTexture,
|
|
|
+ bumpScale: - 0.05,
|
|
|
+ bumpMap: roughnessTexture,
|
|
|
+ color: 0xffffff,
|
|
|
+ metalness: 0.9,
|
|
|
+ roughness: 1.0,
|
|
|
+ shading: THREE.SmoothShading,
|
|
|
+ premultipliedAlpha: true,
|
|
|
+ blending: THREE.CustomBlending,
|
|
|
+ blendSrc: THREE.OneFactor, // output of shader must be premultiplied
|
|
|
+ blendDst: THREE.OneMinusSrcAlphaFactor,
|
|
|
+ blendEquation: THREE.AddEquation,
|
|
|
+ transparent: true
|
|
|
+ } );
|
|
|
+
|
|
|
+ console.log( 'standardMaterialPremultiplied', standardMaterialPremultiplied );
|
|
|
+
|
|
|
+ var torusMesh2 = new THREE.Mesh( geometry, standardMaterialPremultiplied );
|
|
|
+ torusMesh2.position.x = 20.0;
|
|
|
+ torusMesh2.castShadow = true;
|
|
|
+ scene.add( torusMesh2 );
|
|
|
+ objects.push( torusMesh2 );
|
|
|
+
|
|
|
+ var floorMaterial = new THREE.MeshStandardMaterial( {
|
|
|
+ map: null,
|
|
|
+ roughnessMap: null,
|
|
|
+ color: 0xffffff,
|
|
|
+ metalness: 0.0,
|
|
|
+ roughness: 0.0,
|
|
|
+ shading: THREE.SmoothShading
|
|
|
+ } );
|
|
|
+
|
|
|
+ var planeGeometry = new THREE.PlaneBufferGeometry( 200, 200 );
|
|
|
+ var planeMesh1 = new THREE.Mesh( planeGeometry, floorMaterial );
|
|
|
+ planeMesh1.position.y = - 50;
|
|
|
+ planeMesh1.rotation.x = - Math.PI * 0.5;
|
|
|
+ planeMesh1.receiveShadow = true;
|
|
|
+ scene.add( planeMesh1 );
|
|
|
+
|
|
|
+
|
|
|
+ // Lights
|
|
|
+
|
|
|
+ scene.add( new THREE.AmbientLight( 0x222222 ) );
|
|
|
+
|
|
|
+ var spotLight = new THREE.SpotLight( 0xffffff );
|
|
|
+ spotLight.position.set( 50, 100, 50 );
|
|
|
+ spotLight.angle = Math.PI / 7;
|
|
|
+ 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.gammaInput = true;
|
|
|
+ renderer.gammaOutput = true;
|
|
|
+
|
|
|
+ composer = new THREE.EffectComposer( renderer );
|
|
|
+ composer.setSize( window.innerWidth, window.innerHeight );
|
|
|
+
|
|
|
+ var renderScene = new THREE.RenderPass( scene, camera );
|
|
|
+ composer.addPass( renderScene );
|
|
|
+
|
|
|
+ var copyPass = new THREE.ShaderPass( THREE.CopyShader );
|
|
|
+ copyPass.renderToScreen = true;
|
|
|
+ composer.addPass( copyPass );
|
|
|
+
|
|
|
+ stats = new Stats();
|
|
|
+ stats.domElement.style.position = 'absolute';
|
|
|
+ stats.domElement.style.top = '0px';
|
|
|
+
|
|
|
+ container.appendChild( stats.domElement );
|
|
|
+
|
|
|
+ controls = new THREE.OrbitControls( camera, renderer.domElement );
|
|
|
+ controls.target.set( 0, 0, 0 );
|
|
|
+ controls.update();
|
|
|
+
|
|
|
+ window.addEventListener( 'resize', onWindowResize, false );
|
|
|
+
|
|
|
+ var gui = new dat.GUI();
|
|
|
+
|
|
|
+ gui.add( params, 'roughness', 0, 1 );
|
|
|
+ gui.add( params, 'bumpScale', - 1, 1 );
|
|
|
+ gui.add( params, 'opacity', 0, 1 );
|
|
|
+ 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 );
|
|
|
+
|
|
|
+ render();
|
|
|
+ stats.update();
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ function render() {
|
|
|
+
|
|
|
+ if ( standardMaterial !== undefined ) {
|
|
|
+
|
|
|
+
|
|
|
+ standardMaterial.roughness = params.roughness;
|
|
|
+ standardMaterialPremultiplied.roughness = params.roughness;
|
|
|
+
|
|
|
+ standardMaterial.bumpScale = - 0.05 * params.bumpScale;
|
|
|
+ standardMaterialPremultiplied.bumpScale = - 0.05 * params.bumpScale;
|
|
|
+
|
|
|
+ standardMaterial.opacity = params.opacity;
|
|
|
+ standardMaterialPremultiplied.opacity = params.opacity;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ var timer = Date.now() * 0.00025;
|
|
|
+
|
|
|
+ camera.lookAt( scene.position );
|
|
|
+
|
|
|
+ for ( var i = 0, l = objects.length; i < l; i ++ ) {
|
|
|
+
|
|
|
+ var object = objects[ i ];
|
|
|
+ object.rotation.y += 0.005;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ composer.render();
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ </script>
|
|
|
+
|
|
|
+ </body>
|
|
|
+</html>
|
Ben Houston