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<!DOCTYPE html>
<head>
<!-- <script src="https://cdn.jsdelivr.net/npm/three@v0.108.0"></script> -->
<script src="three.min.js"></script>
<script src="GLTFLoader.js"></script>
<script src="BasisTextureLoader.js"></script>
<script src="https://cdn.jsdelivr.net/npm/three@v0.104.0/examples/js/controls/OrbitControls.js"></script>
<style>
html, body { width:100%; height:100%; margin:0; padding:0; }
canvas { display:block; }
#panel { position: absolute; top: 10px; left: 10px; color: white; background-color:rgba(0.3, 0.3, 0.3, 0.3); padding: 0.5em; max-width: 400px;}
</style>
</head>
<body>
<div id="panel">
<strong>Basis Texture Transcoder glTF Demo</strong>
<div id="log"></div>
</div>
<script>
const renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.gammaOutput = true;
renderer.gammaFactor = 2.2;
const scene = new THREE.Scene();
scene.background = new THREE.Color( 0xf0f0f0 );
const light = new THREE.AmbientLight();
scene.add( light );
const light2 = new THREE.PointLight();
scene.add( light2 );
const camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 0.1, 100 );
camera.position.set( 8, 6, 5 );
camera.lookAt( new THREE.Vector3( 0, -2, 0 ) );
const controls = new THREE.OrbitControls( camera, renderer.domElement );
controls.autoRotate = true;
// Create BasisTextureLoader and detect supported target formats.
const basisLoader = new THREE.BasisTextureLoader();
basisLoader.setTranscoderPath( '../transcoder/build/' );
basisLoader.useAlpha = false;
basisLoader.detectSupport( renderer );
let formatName = 'Unknown format';
switch(basisLoader.workerConfig.format)
{
case THREE.BasisTextureLoader.BASIS_FORMAT.cTFASTC_4x4:
formatName = 'ASTC';
break;
case THREE.BasisTextureLoader.BASIS_FORMAT.cTFBC1:
formatName = 'BC1';
break;
case THREE.BasisTextureLoader.BASIS_FORMAT.cTFBC3:
formatName = 'BC3';
break;
case THREE.BasisTextureLoader.BASIS_FORMAT.cTFBC7_M6_OPAQUE_ONLY:
formatName = 'BC7';
break;
case THREE.BasisTextureLoader.BASIS_FORMAT.cTFPVRTC1_4_RGB:
case THREE.BasisTextureLoader.BASIS_FORMAT.cTFPVRTC1_4_RGBA:
formatName = 'PVRTC';
break;
case THREE.BasisTextureLoader.BASIS_FORMAT.cTFETC1:
formatName = 'ETC1';
break;
default:
break;
}
log(`Transcode to: <strong>${formatName}</strong>`);
// Register BasisTextureLoader for .basis extension.
let loadingManager = new THREE.LoadingManager();
loadingManager.addHandler( /\.basis$/, basisLoader );
// Create GLTFLoader, load model, and render.
const loader = new THREE.GLTFLoader(loadingManager);
loader.load( 'assets/AgiHqSmall.gltf', ( gltf ) => {
const model = gltf.scene;
model.scale.set( 0.01, 0.01, 0.01 );
scene.add( model );
document.body.appendChild( renderer.domElement );
animate();
}, undefined, ( e ) => console.error( e ) );
// Main render loop.
function animate() {
requestAnimationFrame( animate );
controls.update();
renderer.render( scene, camera );
}
// Support viewport resizing.
window.addEventListener( 'resize', () => {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}, false );
function log(s) {
const div = document.createElement('div');
div.innerHTML = s;
document.getElementById('log').appendChild(div);
}
</script>
</body>
</html>
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