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WebGPU: Depth Texture example (#23665)
* add webgpu_depth_texture example * use invert() instead of sub()
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<html lang="en"> | ||
<head> | ||
<title>three.js - WebGPU - Depth Texture</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"> | ||
<!-- WebGPU (For Chrome 94-101), expires 09/01/2022 --> | ||
<meta http-equiv="origin-trial" content="AoS1pSJwCV3KRe73TO0YgJkK9FZ/qhmvKeafztp0ofiE8uoGrnKzfxGVKKICvoBfL8dgE0zpkp2g/oEJNS0fDgkAAABeeyJvcmlnaW4iOiJodHRwczovL3RocmVlanMub3JnOjQ0MyIsImZlYXR1cmUiOiJXZWJHUFUiLCJleHBpcnkiOjE2NTI4MzE5OTksImlzU3ViZG9tYWluIjp0cnVlfQ=="> | ||
</head> | ||
<body> | ||
<div id="info"> | ||
<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> WebGPU - Depth Texture | ||
</div> | ||
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<script async src="https://unpkg.com/[email protected]/dist/es-module-shims.js"></script> | ||
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<script type="importmap"> | ||
{ | ||
"imports": { | ||
"three": "../build/three.module.js", | ||
"three-nodes/": "./jsm/nodes/" | ||
} | ||
} | ||
</script> | ||
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<script type="module"> | ||
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import * as THREE from 'three'; | ||
import * as Nodes from 'three-nodes/Nodes.js'; | ||
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import WebGPU from './jsm/capabilities/WebGPU.js'; | ||
import WebGPURenderer from './jsm/renderers/webgpu/WebGPURenderer.js'; | ||
import WebGPUTextureRenderer from './jsm/renderers/webgpu/WebGPUTextureRenderer.js'; | ||
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import { smoothstep, negate, positionView, invert } from 'three-nodes/ShaderNode.js'; | ||
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import { OrbitControls } from './jsm/controls/OrbitControls.js'; | ||
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let camera, scene, controls, renderer; | ||
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let cameraFX, sceneFX, textureRenderer; | ||
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const dpr = window.devicePixelRatio; | ||
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init().then( animate ).catch( error ); | ||
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async 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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camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.01, 30 ); | ||
camera.position.z = 4; | ||
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scene = new THREE.Scene(); | ||
scene.background = new THREE.Color( 0x222222 ); | ||
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// depth material | ||
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const material = new Nodes.MeshBasicNodeMaterial(); | ||
material.colorNode = invert( smoothstep( camera.near, camera.far, negate( positionView.z ) ) ); | ||
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// | ||
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const geometry = new THREE.TorusKnotGeometry( 1, 0.3, 128, 64 ); | ||
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const count = 50; | ||
const scale = 5; | ||
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for ( let i = 0; i < count; i ++ ) { | ||
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const r = Math.random() * 2.0 * Math.PI; | ||
const z = ( Math.random() * 2.0 ) - 1.0; | ||
const zScale = Math.sqrt( 1.0 - z * z ) * scale; | ||
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const mesh = new THREE.Mesh( geometry, material ); | ||
mesh.position.set( | ||
Math.cos( r ) * zScale, | ||
Math.sin( r ) * zScale, | ||
z * scale | ||
); | ||
mesh.rotation.set( Math.random(), Math.random(), Math.random() ); | ||
scene.add( mesh ); | ||
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} | ||
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// | ||
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renderer = new WebGPURenderer(); | ||
renderer.setPixelRatio( dpr ); | ||
renderer.setSize( window.innerWidth, window.innerHeight ); | ||
document.body.appendChild( renderer.domElement ); | ||
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textureRenderer = new WebGPUTextureRenderer( renderer ); | ||
textureRenderer.setSize( window.innerWidth * dpr, window.innerHeight * dpr ); | ||
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window.addEventListener( 'resize', onWindowResize ); | ||
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// FX | ||
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cameraFX = new THREE.OrthographicCamera( - 1, 1, 1, - 1, 0, 1 ); | ||
sceneFX = new THREE.Scene(); | ||
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const geometryFX = new THREE.PlaneGeometry( 2, 2 ); | ||
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// | ||
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const materialFX = new Nodes.MeshBasicNodeMaterial(); | ||
materialFX.colorNode = new Nodes.TextureNode( textureRenderer.getTexture() ); | ||
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const quad = new THREE.Mesh( geometryFX, materialFX ); | ||
sceneFX.add( quad ); | ||
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// | ||
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controls = new OrbitControls( camera, renderer.domElement ); | ||
controls.enableDamping = true; | ||
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// | ||
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return renderer.init(); | ||
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} | ||
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function onWindowResize() { | ||
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camera.aspect = window.innerWidth / window.innerHeight; | ||
camera.updateProjectionMatrix(); | ||
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renderer.setSize( window.innerWidth, window.innerHeight ); | ||
textureRenderer.setSize( window.innerWidth * dpr, window.innerHeight * dpr ); | ||
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} | ||
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function animate() { | ||
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requestAnimationFrame( animate ); | ||
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textureRenderer.render( scene, camera ); | ||
renderer.render( sceneFX, cameraFX ); | ||
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} | ||
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function error( error ) { | ||
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console.error( error ); | ||
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} | ||
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</script> | ||
</body> | ||
</html> |