javascript
/
three.js
镜像自地址 https://github.com/tazdij/three.js.git


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

		<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, MeshBasicNodeMaterial, MeshPhongNodeMaterial } from 'three/nodes';

			import WebGPU from 'three/addons/capabilities/WebGPU.js';
			import WebGL from 'three/addons/capabilities/WebGL.js';

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

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

			import QuadMesh from 'three/addons/objects/QuadMesh.js';

			let camera, scene, renderer;
			const mouse = new THREE.Vector2();

			let quadMesh, renderTarget;

			let box, box2;

			const dpr = 1;

			const params = {
				animated: true,
				samples: 4
			};

			const mat4 = new THREE.Matrix4();

			const count = 50;
			const fullRadius = 20; // Radius of the sphere
			const halfRadius = 10; // Radius of the sphere
			const positions = new Array( count ).fill().map( ( _, i ) => {

				const radius = ( i % 2 === 0 ) ? fullRadius : halfRadius;

				const phi = Math.acos( 2 * Math.random() - 1 ) - Math.PI / 2; // phi: latitude, range -π/2 to π/2
				const theta = 2 * Math.PI * Math.random(); // theta: longitude, range 0 to 2π

				return new THREE.Vector3(
					radius * Math.cos( phi ) * Math.cos( theta ), // x
					radius * Math.sin( phi ), // y
					radius * Math.cos( phi ) * Math.sin( theta ) // z
				);

			} );


			initGUI();
			init();

			function initGUI() {

				const gui = new GUI();
				gui.add( params, 'samples', 0, 4 ).step( 1 );
				gui.add( params, 'animated', true );

			}

			function init() {

				if ( WebGPU.isAvailable() === false && WebGL.isWebGL2Available() === false ) {

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

					throw new Error( 'No WebGPU or WebGL2 support' );

				}

				camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.1, 50 );
				camera.position.z = 3;

				scene = new THREE.Scene();
				scene.background = new THREE.Color( 0x111111 );

				// textured mesh

				const geometryBox = new THREE.BoxGeometry( 7, 7, 7, 12, 12, 12 );
				const materialBox = new MeshPhongNodeMaterial();
				const materialBoxInner = new MeshPhongNodeMaterial( { color: 0xff0000 } );

				materialBox.wireframe = true;

				//

				box = new THREE.InstancedMesh( geometryBox, materialBox, count );
				box2 = new THREE.InstancedMesh( geometryBox, materialBoxInner, count );

				for ( let i = 0; i < count; i ++ ) {

					box.setMatrixAt( i, mat4.identity().setPosition( positions[ i ] ) );
					box2.setMatrixAt( i, mat4.multiplyScalar( 0.996 ).setPosition( positions[ i ] ) );

				}

				scene.add( box, box2 );

				//

				renderer = new WebGPURenderer( { antialias: true } );
				renderer.setPixelRatio( dpr );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.setAnimationLoop( animate );
				document.body.appendChild( renderer.domElement );

				renderTarget = new THREE.RenderTarget( window.innerWidth * dpr, window.innerHeight * dpr, {
					samples: params.samples,
					depthBuffer: true,
				} );

				window.addEventListener( 'mousemove', onWindowMouseMove );
				window.addEventListener( 'resize', onWindowResize );

				// FX

				// modulate the final color based on the mouse position

				const materialFX = new MeshBasicNodeMaterial();
				materialFX.colorNode = texture( renderTarget.texture ).rgb;

				quadMesh = new QuadMesh( materialFX );

			}

			function onWindowMouseMove( e ) {

				mouse.x = e.offsetX / window.innerWidth;
				mouse.y = e.offsetY / window.innerHeight;

			}

			function onWindowResize() {

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

				renderer.setSize( window.innerWidth, window.innerHeight );
				renderTarget.setSize( window.innerWidth * dpr, window.innerHeight * dpr );

			}

			function animate() {

				if ( params.animated ) {

					box.rotation.x += 0.001;
					box.rotation.y += 0.002;
					box2.rotation.x += 0.001;
					box2.rotation.y += 0.002;

				}

				renderTarget.samples = params.samples;

				renderer.setRenderTarget( renderTarget );
				renderer.render( scene, camera );

				renderer.setRenderTarget( null );
				quadMesh.render( renderer );

			}

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