javascript
/
three.js
дзеркало https://github.com/tazdij/three.js.git


			
				
					
						
						
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							<html lang="en">
	<head>
		<title>three.js - WebGPU - Particles</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> WebGPU - Particles
		</div>

		<script async src="https://unpkg.com/[email protected]/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 { range, texture, mix, uv, color, positionLocal, timerLocal, attribute, SpriteNodeMaterial } from 'three/nodes';

			import { GUI } from 'three/addons/libs/lil-gui.module.min.js';

			import WebGPU from 'three/addons/capabilities/WebGPU.js';
			import WebGPURenderer from 'three/addons/renderers/webgpu/WebGPURenderer.js';

			import { OrbitControls } from 'three/addons/controls/OrbitControls.js';

			let camera, scene, renderer;
			let controls;

			init();

			function init() {

				if ( WebGPU.isAvailable() === false ) {

					document.body.appendChild( WebGPU.getErrorMessage() );

					throw new Error( 'No WebGPU support' );

				}

				const { innerWidth, innerHeight } = window;

				camera = new THREE.PerspectiveCamera( 60, innerWidth / innerHeight, 1, 5000 );
				camera.position.set( 1300, 500, 0 );

				scene = new THREE.Scene();
				//scene.fogNode = rangeFog( color( 0x0000ff ), 1500, 2100 );

				// textures

				const textureLoader = new THREE.TextureLoader();
				const map = textureLoader.load( 'textures/opengameart/smoke1.png' );

				// create nodes

				const lifeRange = range( .1, 1 );
				const offsetRange = range( new THREE.Vector3( - 2, 3, - 2 ), new THREE.Vector3( 2, 5, 2 ) );

				const timer = timerLocal( .2, 1/*100000*/ ); // @TODO: need to work with 64-bit precision

				const lifeTime = timer.mul( lifeRange ).mod( 1 );
				const scaleRange = range( .3, 2 );
				const rotateRange = range( .1, 4 );

				const life = lifeTime.div( lifeRange );

				const fakeLightEffect = positionLocal.y.oneMinus().max( 0.2 );

				const textureNode = texture( map, uv().rotateUV( timer.mul( rotateRange ) ) );

				const opacityNode = textureNode.a.mul( life.oneMinus() );

				const smokeColor = mix( color( 0x2c1501 ), color( 0x222222 ), positionLocal.y.mul( 3 ).clamp() );

				// create particles

				const smokeNodeMaterial = new SpriteNodeMaterial();
				smokeNodeMaterial.colorNode = mix( color( 0xf27d0c ), smokeColor, life.mul( 2.5 ).min( 1 ) ).mul( fakeLightEffect );
				smokeNodeMaterial.opacityNode = opacityNode;
				smokeNodeMaterial.positionNode = offsetRange.mul( lifeTime );
				smokeNodeMaterial.scaleNode = scaleRange.mul( lifeTime.max( 0.3 ) );
				smokeNodeMaterial.depthWrite = false;
				smokeNodeMaterial.transparent = true;

				const smokeInstancedSprite = new THREE.Mesh( new THREE.PlaneGeometry( 1, 1 ), smokeNodeMaterial );
				smokeInstancedSprite.scale.setScalar( 400 );
				smokeInstancedSprite.isInstancedMesh = true;
				smokeInstancedSprite.count = 2000;
				scene.add( smokeInstancedSprite );

				//

				const fireNodeMaterial = new SpriteNodeMaterial();
				fireNodeMaterial.colorNode = mix( color( 0xb72f17 ), color( 0xb72f17 ), life );
				fireNodeMaterial.positionNode = range( new THREE.Vector3( - 1, 1, - 1 ), new THREE.Vector3( 1, 2, 1 ) ).mul( lifeTime );
				fireNodeMaterial.scaleNode = smokeNodeMaterial.scaleNode;
				fireNodeMaterial.opacityNode = opacityNode;
				fireNodeMaterial.blending = THREE.AdditiveBlending;
				fireNodeMaterial.transparent = true;
				fireNodeMaterial.depthWrite = false;

				const fireInstancedSprite = new THREE.Mesh( new THREE.PlaneGeometry( 1, 1 ), fireNodeMaterial );
				fireInstancedSprite.scale.setScalar( 400 );
				fireInstancedSprite.isInstancedMesh = true;
				fireInstancedSprite.count = 100;
				fireInstancedSprite.position.y = - 100;
				fireInstancedSprite.renderOrder = 1;
				scene.add( fireInstancedSprite );

				//

				const helper = new THREE.GridHelper( 3000, 40, 0x303030, 0x303030 );
				helper.material.colorNode = attribute( 'color' );
				helper.position.y = - 75;
				scene.add( helper );

				//

				renderer = new WebGPURenderer();
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.setAnimationLoop( render );
				document.body.appendChild( renderer.domElement );

				//

				controls = new OrbitControls( camera, renderer.domElement );
				controls.maxDistance = 2700;
				controls.target.set( 0, 500, 0 );
				controls.update();

				//

				window.addEventListener( 'resize', onWindowResize );

				// gui

				const gui = new GUI();

				gui.add( timer, 'scale', 0, 1, 0.01 ).name( 'speed' );

			}

			function onWindowResize() {

				const { innerWidth, innerHeight } = window;

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

				renderer.setSize( innerWidth, innerHeight );

			}

			function render() {

				renderer.render( scene, camera );

			}

		</script>
	</body>
</html>