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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgl - 2D compressed texture array</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>
- <script id="vs" type="x-shader/x-vertex">
- uniform vec2 size;
- out vec2 vUv;
- void main() {
- gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
- // Convert position.xy to 1.0-0.0
- vUv.xy = position.xy / size + 0.5;
- vUv.y = 1.0 - vUv.y; // original data is upside down
- }
- </script>
- <script id="fs" type="x-shader/x-fragment">
- precision highp float;
- precision highp int;
- precision highp sampler2DArray;
- uniform sampler2DArray diffuse;
- in vec2 vUv;
- uniform int depth;
- out vec4 outColor;
- void main() {
- vec4 color = texture( diffuse, vec3( vUv, depth ) );
- // lighten a bit
- outColor = vec4( color.rgb + .2, 1.0 );
- }
- </script>
- <body>
- <div id="info">
- <a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - 2D Compressed Texture Array<br />
- Loop from the movie Spirited away
- by the <a href="https://www.ghibli.jp/" target="_blank" rel="noopener">Studio Ghibli</a><br />
- </div>
- <script type="importmap">
- {
- "imports": {
- "three": "../build/three.module.js",
- "three/addons/": "./jsm/"
- }
- }
- </script>
- <script type="module">
- import * as THREE from 'three';
- import Stats from 'three/addons/libs/stats.module.js';
- import { KTX2Loader } from 'three/addons/loaders/KTX2Loader.js';
- let camera, scene, mesh, renderer, stats, clock;
- const planeWidth = 50;
- const planeHeight = 25;
- let depthStep = 1;
- init();
- function init() {
- const container = document.createElement( 'div' );
- document.body.appendChild( container );
- camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.1, 2000 );
- camera.position.z = 70;
- scene = new THREE.Scene();
- //
- clock = new THREE.Clock();
- renderer = new THREE.WebGLRenderer();
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( window.innerWidth, window.innerHeight );
- renderer.setAnimationLoop( animate );
- container.appendChild( renderer.domElement );
- //
- const ktx2Loader = new KTX2Loader();
- ktx2Loader.setTranscoderPath( 'jsm/libs/basis/' );
- ktx2Loader.detectSupport( renderer );
- ktx2Loader.load( 'textures/spiritedaway.ktx2', function ( texturearray ) {
- const material = new THREE.ShaderMaterial( {
- uniforms: {
- diffuse: { value: texturearray },
- depth: { value: 55 },
- size: { value: new THREE.Vector2( planeWidth, planeHeight ) }
- },
- vertexShader: document.getElementById( 'vs' ).textContent.trim(),
- fragmentShader: document.getElementById( 'fs' ).textContent.trim(),
- glslVersion: THREE.GLSL3
- } );
- const geometry = new THREE.PlaneGeometry( planeWidth, planeHeight );
- mesh = new THREE.Mesh( geometry, material );
- scene.add( mesh );
- } );
- stats = new Stats();
- container.appendChild( stats.dom );
- window.addEventListener( 'resize', onWindowResize );
- }
- function onWindowResize() {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- }
- function animate() {
- if ( mesh ) {
- const delta = clock.getDelta() * 10;
- depthStep += delta;
- const value = depthStep % 5;
- mesh.material.uniforms[ 'depth' ].value = value;
- }
- render();
- stats.update();
- }
- function render() {
- renderer.render( scene, camera );
- }
- </script>
- </body>
- </html>
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