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222 lines
5.1 KiB
HTML
222 lines
5.1 KiB
HTML
2 months ago
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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 - materials - alpha hash</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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<link type="text/css" rel="stylesheet" href="main.css">
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</head>
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<body>
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<script type="importmap">
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{
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"imports": {
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"three": "../build/three.module.js",
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"three/addons/": "./jsm/"
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}
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}
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</script>
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<script type="module">
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import * as THREE from 'three';
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import Stats from 'three/addons/libs/stats.module.js';
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import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
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import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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import { RoomEnvironment } from 'three/addons/environments/RoomEnvironment.js';
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import { EffectComposer } from 'three/addons/postprocessing/EffectComposer.js';
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import { RenderPass } from 'three/addons/postprocessing/RenderPass.js';
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import { TAARenderPass } from 'three/addons/postprocessing/TAARenderPass.js';
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import { OutputPass } from 'three/addons/postprocessing/OutputPass.js';
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let camera, scene, renderer, controls, stats, mesh, material;
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let composer, renderPass, taaRenderPass, outputPass;
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let needsUpdate = false;
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const amount = parseInt( window.location.search.slice( 1 ) ) || 3;
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const count = Math.pow( amount, 3 );
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const color = new THREE.Color();
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const params = {
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alpha: 0.5,
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alphaHash: true,
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taa: true,
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sampleLevel: 2,
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};
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init();
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function init() {
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camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 0.1, 100 );
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camera.position.set( amount, amount, amount );
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camera.lookAt( 0, 0, 0 );
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scene = new THREE.Scene();
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const geometry = new THREE.IcosahedronGeometry( 0.5, 3 );
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material = new THREE.MeshStandardMaterial( {
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color: 0xffffff,
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alphaHash: params.alphaHash,
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opacity: params.alpha
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} );
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mesh = new THREE.InstancedMesh( geometry, material, count );
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let i = 0;
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const offset = ( amount - 1 ) / 2;
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const matrix = new THREE.Matrix4();
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for ( let x = 0; x < amount; x ++ ) {
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for ( let y = 0; y < amount; y ++ ) {
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for ( let z = 0; z < amount; z ++ ) {
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matrix.setPosition( offset - x, offset - y, offset - z );
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mesh.setMatrixAt( i, matrix );
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mesh.setColorAt( i, color.setHex( Math.random() * 0xffffff ) );
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i ++;
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}
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}
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}
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scene.add( mesh );
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//
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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.setAnimationLoop( animate );
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document.body.appendChild( renderer.domElement );
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//
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const environment = new RoomEnvironment();
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const pmremGenerator = new THREE.PMREMGenerator( renderer );
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scene.environment = pmremGenerator.fromScene( environment ).texture;
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environment.dispose();
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//
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composer = new EffectComposer( renderer );
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renderPass = new RenderPass( scene, camera );
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renderPass.enabled = false;
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taaRenderPass = new TAARenderPass( scene, camera );
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outputPass = new OutputPass();
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composer.addPass( renderPass );
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composer.addPass( taaRenderPass );
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composer.addPass( outputPass );
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//
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controls = new OrbitControls( camera, renderer.domElement );
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controls.enableZoom = false;
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controls.enablePan = false;
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controls.addEventListener( 'change', () => ( needsUpdate = true ) );
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//
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const gui = new GUI();
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gui.add( params, 'alpha', 0, 1 ).onChange( onMaterialUpdate );
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gui.add( params, 'alphaHash' ).onChange( onMaterialUpdate );
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const taaFolder = gui.addFolder( 'Temporal Anti-Aliasing' );
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taaFolder.add( params, 'taa' ).name( 'enabled' ).onChange( () => {
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renderPass.enabled = ! params.taa;
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taaRenderPass.enabled = params.taa;
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sampleLevelCtrl.enable( params.taa );
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needsUpdate = true;
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} );
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const sampleLevelCtrl = taaFolder.add( params, 'sampleLevel', 0, 6, 1 ).onChange( () => ( needsUpdate = true ) );
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//
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stats = new Stats();
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document.body.appendChild( stats.dom );
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window.addEventListener( 'resize', onWindowResize );
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}
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function onWindowResize() {
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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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composer.setSize( window.innerWidth, window.innerHeight );
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needsUpdate = true;
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}
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function onMaterialUpdate() {
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material.opacity = params.alpha;
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material.alphaHash = params.alphaHash;
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material.transparent = ! params.alphaHash;
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material.depthWrite = params.alphaHash;
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material.needsUpdate = true;
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needsUpdate = true;
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}
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function animate() {
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render();
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stats.update();
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}
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function render() {
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if ( needsUpdate ) {
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taaRenderPass.accumulate = false;
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taaRenderPass.sampleLevel = 0;
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needsUpdate = false;
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} else {
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taaRenderPass.accumulate = true;
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taaRenderPass.sampleLevel = params.sampleLevel;
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}
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composer.render();
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}
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</script>
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</body>
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</html>
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