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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 webgpu - materials - matcap</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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+
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+ <body>
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+ <div id="info">
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+ <a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - webgpu materials matcap<br />
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+ Drag-and-drop JPG, PNG, WebP, AVIF, or EXR MatCap image files<br/>
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+ </div>
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+
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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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+ "three/nodes": "./jsm/nodes/Nodes.js"
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+ }
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+ }
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+ </script>
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+
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+ <script type="module">
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+
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+ import * as THREE from 'three';
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+
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+ import WebGPURenderer from 'three/addons/renderers/webgpu/WebGPURenderer.js';
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+
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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 { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
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+ import { EXRLoader } from 'three/addons/loaders/EXRLoader.js';
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+
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+ import { MeshMatcapNodeMaterial } from 'three/nodes';
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+
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+ let mesh, renderer, scene, camera;
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+
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+ const API = {
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+ color: 0xffffff, // sRGB
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+ exposure: 1.0
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+ };
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+
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+ init();
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+
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+ function init() {
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+
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+ // renderer
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+ renderer = new WebGPURenderer( { antialias: true } );
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+ renderer.setPixelRatio( window.devicePixelRatio );
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+ document.body.appendChild( renderer.domElement );
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+
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+ // tone mapping
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+ renderer.toneMapping = THREE.ACESFilmicToneMapping;
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+ renderer.toneMappingExposure = API.exposure;
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+
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+ // scene
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+ scene = new THREE.Scene();
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+
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+ // camera
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+ camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 100 );
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+ camera.position.set( 0, 0, 13 );
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+
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+ // controls
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+ const controls = new OrbitControls( camera, renderer.domElement );
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+ controls.addEventListener( 'change', render );
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+ controls.enableZoom = false;
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+ controls.enablePan = false;
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+
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+ // manager
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+ const manager = new THREE.LoadingManager( render );
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+
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+ // matcap
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+ const loaderEXR = new EXRLoader( manager );
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+ const matcap = loaderEXR.load( 'textures/matcaps/040full.exr' );
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+
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+ // normalmap
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+ const loader = new THREE.TextureLoader( manager );
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+
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+ const normalmap = loader.load( 'models/gltf/LeePerrySmith/Infinite-Level_02_Tangent_SmoothUV.jpg' );
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+
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+ // model
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+ new GLTFLoader( manager ).load( 'models/gltf/LeePerrySmith/LeePerrySmith.glb', function ( gltf ) {
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+
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+ mesh = gltf.scene.children[ 0 ];
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+ mesh.position.y = - 0.25;
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+
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+ mesh.material = new MeshMatcapNodeMaterial( {
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+
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+ color: new THREE.Color().setHex( API.color ).convertSRGBToLinear(),
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+ matcap: matcap,
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+ normalMap: normalmap
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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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+ } );
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+
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+ // gui
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+ const gui = new GUI();
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+
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+ gui.addColor( API, 'color' )
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+ .listen()
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+ .onChange( function () {
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+
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+ mesh.material.color.set( API.color ).convertSRGBToLinear();
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+ render();
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+
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+ } );
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+
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+ gui.add( API, 'exposure', 0, 2 )
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+ .onChange( function () {
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+
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+ renderer.toneMappingExposure = API.exposure;
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+ render();
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+
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+ } );
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+
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+ gui.domElement.style.webkitUserSelect = 'none';
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+
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+ // drag 'n drop
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+ initDragAndDrop();
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+
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+ window.addEventListener( 'resize', onWindowResize );
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+
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+ }
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+
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+ function onWindowResize() {
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+
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+ renderer.setSize( window.innerWidth, window.innerHeight );
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+
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+ camera.aspect = window.innerWidth / window.innerHeight;
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+ camera.updateProjectionMatrix();
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+
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+ render();
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+
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+ }
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+
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+ function render() {
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+
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+ renderer.renderAsync( scene, camera );
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+
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+ }
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+
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+ //
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+ // drag and drop anywhere in document
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+ //
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+
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+ function updateMatcap( texture ) {
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+
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+ if ( mesh.material.matcap ) {
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+
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+ mesh.material.matcap.dispose();
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+
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+ }
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+
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+ mesh.material.matcap = texture;
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+
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+ texture.needsUpdate = true;
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+
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+ mesh.material.needsUpdate = true; // because the color space can change
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+
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+ render();
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+
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+ }
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+
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+ function handleJPG( event ) { // PNG, WebP, AVIF, too
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+
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+ function imgCallback( event ) {
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+
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+ const texture = new THREE.Texture( event.target );
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+
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+ texture.colorSpace = THREE.SRGBColorSpace;
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+
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+ updateMatcap( texture );
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+
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+ }
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+
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+ const img = new Image();
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+
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+ img.onload = imgCallback;
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+
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+ img.src = event.target.result;
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+
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+ }
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+
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+ function handleEXR( event ) {
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+
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+ const contents = event.target.result;
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+
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+ const loader = new EXRLoader();
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+
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+ loader.setDataType( THREE.HalfFloatType );
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+
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+ const texData = loader.parse( contents );
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+
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+ const texture = new THREE.DataTexture();
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+
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+ texture.image.width = texData.width;
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+ texture.image.height = texData.height;
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+ texture.image.data = texData.data;
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+
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+ texture.format = texData.format;
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+ texture.type = texData.type;
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+ texture.colorSpace = THREE.LinearSRGBColorSpace;
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+ texture.minFilter = THREE.LinearFilter;
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+ texture.magFilter = THREE.LinearFilter;
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+ texture.generateMipmaps = false;
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+ texture.flipY = false;
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+
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+ updateMatcap( texture );
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+
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+ }
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+
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+ function loadFile( file ) {
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+
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+ const filename = file.name;
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+ const extension = filename.split( '.' ).pop().toLowerCase();
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+
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+ if ( extension === 'exr' ) {
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+
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+ const reader = new FileReader();
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+
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+ reader.addEventListener( 'load', function ( event ) {
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+
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+ handleEXR( event );
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+
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+ } );
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+
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+ reader.readAsArrayBuffer( file );
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+
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+ } else { // 'jpg', 'png'
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+
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+ const reader = new FileReader();
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+
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+ reader.addEventListener( 'load', function ( event ) {
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+
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+ handleJPG( event );
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+
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+ } );
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+
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+ reader.readAsDataURL( file );
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+
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+ }
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+
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+ }
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+
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+ function initDragAndDrop() {
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+
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+ document.addEventListener( 'dragover', function ( event ) {
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+
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+ event.preventDefault();
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+ event.dataTransfer.dropEffect = 'copy';
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+
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+ } );
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+
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+ document.addEventListener( 'drop', function ( event ) {
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+
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+ event.preventDefault();
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+
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+ loadFile( event.dataTransfer.files[ 0 ] );
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+
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+ } );
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+
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+ }
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+
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+ </script>
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+
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+ </body>
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+</html>
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aardgoose
