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WebGPURenderer: Add
textureGrad support (#28048)
* support texture grad * cleanup * add texture vs textureGrad example
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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| <html lang="en"> | ||
| <head> | ||
| <title>three.js - WebGPU - Texture Gradient</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> | ||
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| <div id="info"> | ||
| <a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> | ||
| <br />This example demonstrate texture gradient | ||
| <br /> Left canvas is using WebGPU Backend, right canvas is WebGL Backend. | ||
| <br /> The bottom half of the texture benefits from the gradient to achieve better blur quality. | ||
| </div> | ||
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| <script type="importmap"> | ||
| { | ||
| "imports": { | ||
| "three": "../build/three.module.js", | ||
| "three/addons/": "./jsm/", | ||
| "three/nodes": "./jsm/nodes/Nodes.js" | ||
| } | ||
| } | ||
| </script> | ||
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| <script type="module"> | ||
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| import * as THREE from 'three'; | ||
| import { If, vec4, float, timerLocal, cos, pow, vec2, uv, texture, tslFn, MeshBasicNodeMaterial } from 'three/nodes'; | ||
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| import WebGPURenderer from 'three/addons/renderers/webgpu/WebGPURenderer.js'; | ||
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| // WebGPU Backend | ||
| init(); | ||
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| // WebGL Backend | ||
| init( true ); | ||
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| async function init( forceWebGL = false ) { | ||
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| const aspect = ( window.innerWidth / 2 ) / window.innerHeight; | ||
| const camera = new THREE.OrthographicCamera( - aspect, aspect ); | ||
| camera.position.z = 2; | ||
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| const scene = new THREE.Scene(); | ||
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| // texture | ||
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| const material = new MeshBasicNodeMaterial( { color: 0xffffff } ); | ||
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| // load async brick_diffuse | ||
| const map = await new THREE.TextureLoader().loadAsync( 'textures/uv_grid_opengl.jpg' ); | ||
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| const elapsedTime = timerLocal(); | ||
| material.colorNode = tslFn( () => { | ||
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| const color = vec4( 1. ).toVar(); | ||
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| const vuv = uv().toVar(); | ||
| const blur = pow( float( 0.0625 ).sub( cos( vuv.x.mul( 20.0 ).add( elapsedTime ) ) ).mul( 0.0625 ), 2.0 ); | ||
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| const grad = vec2( blur ).toVar(); | ||
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| If( vuv.y.greaterThan( 0.5 ), () => { | ||
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| grad.assign( 0 ); | ||
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| } ); | ||
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| color.assign( | ||
| texture( map, vuv.add( vec2( blur, blur ).mul( 0.5 ) ) ).grad( grad, grad ).mul( 0.25 ) | ||
| .add( texture( map, vuv.add( vec2( blur, blur.negate() ).mul( 0.5 ) ) ).grad( grad, grad ).mul( 0.25 ) ) | ||
| .add( texture( map, vuv.add( vec2( blur.negate(), blur ).mul( 0.5 ) ) ).grad( grad, grad ).mul( 0.25 ) ) | ||
| .add( texture( map, vuv.add( vec2( blur.negate(), blur.negate() ).mul( 0.5 ) ) ).grad( grad, grad ).mul( 0.25 ) ) | ||
| ); | ||
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| If( vuv.y.greaterThan( 0.497 ).and( vuv.y.lessThan( 0.503 ) ), () => { | ||
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| color.assign( 1 ); | ||
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| } ); | ||
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| return color; | ||
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| } )(); | ||
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| // | ||
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| const box = new THREE.Mesh( new THREE.PlaneGeometry( 1, 1 ), material ); | ||
| scene.add( box ); | ||
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| const renderer = new WebGPURenderer( { antialias: false, forceWebGL: forceWebGL, trackTimestamp: true } ); | ||
| renderer.setPixelRatio( window.devicePixelRatio ); | ||
| renderer.setSize( window.innerWidth / 2, window.innerHeight ); | ||
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| document.body.appendChild( renderer.domElement ); | ||
| renderer.domElement.style.position = 'absolute'; | ||
| renderer.domElement.style.top = '0'; | ||
| renderer.domElement.style.left = '0'; | ||
| renderer.domElement.style.width = '50%'; | ||
| renderer.domElement.style.height = '100%'; | ||
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| if ( forceWebGL ) { | ||
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| renderer.domElement.style.left = '50%'; | ||
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| scene.background = new THREE.Color( 0x212121 ); | ||
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| } else { | ||
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| scene.background = new THREE.Color( 0x313131 ); | ||
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| } | ||
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| // | ||
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| const animate = async function () { | ||
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| await renderer.renderAsync( scene, camera ); | ||
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| }; | ||
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| renderer.setAnimationLoop( animate ); | ||
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| window.addEventListener( 'resize', onWindowResize ); | ||
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| function onWindowResize() { | ||
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| renderer.setSize( window.innerWidth / 2, window.innerHeight ); | ||
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| const aspect = ( window.innerWidth / 2 ) / window.innerHeight; | ||
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| const frustumHeight = camera.top - camera.bottom; | ||
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| camera.left = - frustumHeight * aspect / 2; | ||
| camera.right = frustumHeight * aspect / 2; | ||
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| camera.updateProjectionMatrix(); | ||
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| renderer.render( scene, camera ); | ||
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| } | ||
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| } | ||
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| </script> | ||
| </body> | ||
| </html> |