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Examples: Add glTF compression example #21114

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merged 1 commit into from Jan 20, 2021
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1 change: 1 addition & 0 deletions examples/files.json
Expand Up @@ -91,6 +91,7 @@
"webgl_loader_fbx_nurbs",
"webgl_loader_gcode",
"webgl_loader_gltf",
"webgl_loader_gltf_compressed",
"webgl_loader_gltf_extensions",
"webgl_loader_gltf_variants",
"webgl_loader_imagebitmap",
Expand Down
Binary file added examples/models/gltf/coffeemat.glb
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127 changes: 127 additions & 0 deletions examples/webgl_loader_gltf_compressed.html
@@ -0,0 +1,127 @@
<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - glTF 2.0 - compressed</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="https://threejs.org" target="_blank" rel="noopener">three.js</a> - GLTFLoader + compression extensions<br />
<a href="https://sketchfab.com/3d-models/coffeemat-7fb196a40a6e4697aad9ca2f75c8b33d" target="_blank" rel="noopener">Coffeemat</a> by
<a href="https://sketchfab.com/OFFcours1" target="_blank" rel="noopener">Roman Red</a><br />
<a href="https://hdrihaven.com/hdri/?h=royal_esplanade" target="_blank" rel="noopener">Royal Esplanade</a> by <a href="https://hdrihaven.com/" target="_blank" rel="noopener">HDRI Haven</a>
</div>

<script src="./js/libs/basis/msc_basis_transcoder.js"></script>

<script type="module">

import * as THREE from '../build/three.module.js';

import { OrbitControls } from './jsm/controls/OrbitControls.js';
import { GLTFLoader } from './jsm/loaders/GLTFLoader.js';
import { RGBELoader } from './jsm/loaders/RGBELoader.js';

import { KTX2Loader } from './jsm/loaders/KTX2Loader.js';
import { MeshoptDecoder } from './jsm/libs/meshopt_decoder.module.js';

let camera, scene, renderer;

init();
render();

function init() {

const container = document.createElement( 'div' );
document.body.appendChild( container );

renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.toneMapping = THREE.ACESFilmicToneMapping;
renderer.toneMappingExposure = 1;
renderer.outputEncoding = THREE.sRGBEncoding;
container.appendChild( renderer.domElement );

camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 2000 );
camera.position.set( 0, 90, 0 );

scene = new THREE.Scene();

const ktx2Loader = new KTX2Loader().detectSupport( renderer );

new RGBELoader()
.setDataType( THREE.UnsignedByteType )
.setPath( 'textures/equirectangular/' )
.load( 'royal_esplanade_1k.hdr', function ( texture ) {

const envMap = pmremGenerator.fromEquirectangular( texture ).texture;

scene.background = envMap;
scene.environment = envMap;

texture.dispose();
pmremGenerator.dispose();

render();

// model

const loader = new GLTFLoader().setPath( 'models/gltf/' );
loader.setKTX2Loader( ktx2Loader );
loader.setMeshoptDecoder( MeshoptDecoder );

// coffeemat.glb was produced from the source scene using gltfpack:
// gltfpack -i coffeemat/scene.gltf -o coffeemat.glb -cc -tc
// The resulting model uses EXT_meshopt_compression (for geometry) and KHR_texture_basisu (for texture compression using ETC1S/BasisLZ)

loader.load( 'coffeemat.glb', function ( gltf ) {

scene.add( gltf.scene );

render();

} );

} );

const pmremGenerator = new THREE.PMREMGenerator( renderer );
pmremGenerator.compileEquirectangularShader();

const controls = new OrbitControls( camera, renderer.domElement );
controls.addEventListener( 'change', render ); // use if there is no animation loop
controls.minDistance = 500;
controls.maxDistance = 1000;
controls.target.set( 10, 76, -16 );
controls.update();

window.addEventListener( 'resize', onWindowResize, false );

}

function onWindowResize() {

camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();

renderer.setSize( window.innerWidth, window.innerHeight );

render();

}

//

function render() {

renderer.render( scene, camera );

}

</script>

</body>
</html>