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135 lines
3.3 KiB
HTML
135 lines
3.3 KiB
HTML
<html lang="en">
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<head>
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<title>three.js - WebGPU - Compute Texture</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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<div id="info">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> WebGPU - Compute Texture
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</div>
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<script type="importmap">
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{
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"imports": {
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"three": "../build/three.webgpu.js",
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"three/webgpu": "../build/three.webgpu.js",
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"three/tsl": "../build/three.tsl.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 { texture, textureStore, Fn, instanceIndex, float, uvec2, vec4 } from 'three/tsl';
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import WebGPU from 'three/addons/capabilities/WebGPU.js';
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let camera, scene, renderer;
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init();
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render();
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function init() {
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if ( WebGPU.isAvailable() === false ) {
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document.body.appendChild( WebGPU.getErrorMessage() );
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throw new Error( 'No WebGPU support' );
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}
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const aspect = window.innerWidth / window.innerHeight;
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camera = new THREE.OrthographicCamera( - aspect, aspect, 1, - 1, 0, 2 );
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camera.position.z = 1;
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scene = new THREE.Scene();
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// texture
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const width = 512, height = 512;
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const storageTexture = new THREE.StorageTexture( width, height );
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//storageTexture.minFilter = THREE.LinearMipMapLinearFilter;
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// create function
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const computeTexture = Fn( ( { storageTexture } ) => {
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const posX = instanceIndex.mod( width );
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const posY = instanceIndex.div( width );
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const indexUV = uvec2( posX, posY );
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// https://www.shadertoy.com/view/Xst3zN
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const x = float( posX ).div( 50.0 );
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const y = float( posY ).div( 50.0 );
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const v1 = x.sin();
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const v2 = y.sin();
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const v3 = x.add( y ).sin();
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const v4 = x.mul( x ).add( y.mul( y ) ).sqrt().add( 5.0 ).sin();
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const v = v1.add( v2, v3, v4 );
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const r = v.sin();
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const g = v.add( Math.PI ).sin();
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const b = v.add( Math.PI ).sub( 0.5 ).sin();
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textureStore( storageTexture, indexUV, vec4( r, g, b, 1 ) ).toWriteOnly();
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} );
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// compute
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const computeNode = computeTexture( { storageTexture } ).compute( width * height );
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const material = new THREE.MeshBasicNodeMaterial( { color: 0x00ff00 } );
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material.colorNode = texture( storageTexture );
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const plane = new THREE.Mesh( new THREE.PlaneGeometry( 1, 1 ), material );
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scene.add( plane );
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renderer = new THREE.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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// compute texture
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renderer.computeAsync( computeNode );
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window.addEventListener( 'resize', onWindowResize );
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}
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function onWindowResize() {
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renderer.setSize( window.innerWidth, window.innerHeight );
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const aspect = window.innerWidth / window.innerHeight;
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const frustumHeight = camera.top - camera.bottom;
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camera.left = - frustumHeight * aspect / 2;
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camera.right = frustumHeight * aspect / 2;
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camera.updateProjectionMatrix();
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render();
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}
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function render() {
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renderer.renderAsync( scene, camera );
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}
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</script>
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</body>
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</html>
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