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<title>three.js - WebGPU - Sprites</title>
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<link type="text/css" rel="stylesheet" href="main.css">
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<div id="info">
<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> WebGPU - Sprites
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<script async src="https://unpkg.com/es-module-shims@1.8.0/dist/es-module-shims.js"></script>
<script type="importmap">
{
"imports": {
"three": "../build/three.module.js",
"three/addons/": "./jsm/",
"three/nodes": "./jsm/nodes/Nodes.js"
}
}
</script>
<script type="module">
import * as THREE from 'three';
import { texture, uv, userData, rangeFog, color, SpriteNodeMaterial } from 'three/nodes';
import WebGPU from 'three/addons/capabilities/WebGPU.js';
import WebGPURenderer from 'three/addons/renderers/webgpu/WebGPURenderer.js';
let camera, scene, renderer;
let map;
let group;
let imageWidth = 1, imageHeight = 1;
init();
function init() {
if ( WebGPU.isAvailable() === false ) {
document.body.appendChild( WebGPU.getErrorMessage() );
throw new Error( 'No WebGPU support' );
}
const width = window.innerWidth;
const height = window.innerHeight;
camera = new THREE.PerspectiveCamera( 60, width / height, 1, 2100 );
camera.position.z = 1500;
scene = new THREE.Scene();
scene.fogNode = rangeFog( color( 0x0000ff ), 1500, 2100 );
// create sprites
const amount = 200;
const radius = 500;
const textureLoader = new THREE.TextureLoader();
map = textureLoader.load( 'textures/sprite1.png', ( map ) => {
imageWidth = map.image.width;
imageHeight = map.image.height;
} );
group = new THREE.Group();
const textureNode = texture( map );
const material = new SpriteNodeMaterial();
material.colorNode = textureNode.mul( uv() ).mul( 2 );
material.opacityNode = textureNode.a;
material.rotationNode = userData( 'rotation', 'float' ); // get value of: sprite.userData.rotation
material.transparent = true;
for ( let a = 0; a < amount; a ++ ) {
const x = Math.random() - 0.5;
const y = Math.random() - 0.5;
const z = Math.random() - 0.5;
const sprite = new THREE.Sprite( material );
sprite.position.set( x, y, z );
sprite.position.normalize();
sprite.position.multiplyScalar( radius );
// individual rotation per sprite
sprite.userData.rotation = 0;
group.add( sprite );
}
scene.add( group );
//
renderer = new WebGPURenderer();
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.setAnimationLoop( render );
document.body.appendChild( renderer.domElement );
window.addEventListener( 'resize', onWindowResize );
}
function onWindowResize() {
const width = window.innerWidth;
const height = window.innerHeight;
camera.aspect = width / height;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function render() {
const time = Date.now() / 1000;
for ( let i = 0, l = group.children.length; i < l; i ++ ) {
const sprite = group.children[ i ];
const scale = Math.sin( time + sprite.position.x * 0.01 ) * 0.3 + 1.0;
sprite.userData.rotation += 0.1 * ( i / l );
sprite.scale.set( scale * imageWidth, scale * imageHeight, 1.0 );
}
group.rotation.x = time * 0.5;
group.rotation.y = time * 0.75;
group.rotation.z = time * 1.0;
renderer.render( scene, camera );
}
</script>
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