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181 lines
5.4 KiB
HTML
181 lines
5.4 KiB
HTML
2 months ago
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js - WebGPU - Backdrop Area</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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<link type="text/css" rel="stylesheet" href="main.css">
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</head>
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<body>
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<div id="info">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> WebGPU - Backdrop Area
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</div>
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<script type="importmap">
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{
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"imports": {
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"three": "../build/three.webgpu.js",
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"three/webgpu": "../build/three.webgpu.js",
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"three/tsl": "../build/three.tsl.js",
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"three/addons/": "./jsm/"
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}
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}
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</script>
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<script type="module">
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import * as THREE from 'three';
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import { color, positionWorld, linearDepth, viewportLinearDepth, viewportSharedTexture, screenUV, hue, time, checker, uv, modelScale } from 'three/tsl';
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import { hashBlur } from 'three/addons/tsl/display/hashBlur.js';
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import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
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import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
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import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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let camera, scene, renderer;
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let mixer, clock;
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init();
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function init() {
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camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 0.25, 25 );
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camera.position.set( 3, 2, 3 );
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scene = new THREE.Scene();
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scene.backgroundNode = hue( screenUV.y.mix( color( 0x66bbff ), color( 0x4466ff ) ), time.mul( 0.1 ) );
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camera.lookAt( 0, 1, 0 );
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clock = new THREE.Clock();
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const ambient = new THREE.AmbientLight( 0xffffff, 2.5 );
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scene.add( ambient );
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// model
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const loader = new GLTFLoader();
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loader.load( 'models/gltf/Michelle.glb', function ( gltf ) {
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const object = gltf.scene;
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mixer = new THREE.AnimationMixer( object );
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const action = mixer.clipAction( gltf.animations[ 0 ] );
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action.play();
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scene.add( object );
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} );
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// volume
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// compare depth from viewportLinearDepth with linearDepth() to create a distance field
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// viewportLinearDepth return the linear depth of the scene
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// linearDepth() returns the linear depth of the mesh
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const depthDistance = viewportLinearDepth.distance( linearDepth() );
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const depthAlphaNode = depthDistance.oneMinus().smoothstep( .90, 2 ).mul( 10 ).saturate();
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const depthBlurred = hashBlur( viewportSharedTexture(), depthDistance.smoothstep( 0, .6 ).mul( 40 ).clamp().mul( .1 ) );
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const blurredBlur = new THREE.MeshBasicNodeMaterial();
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blurredBlur.backdropNode = depthBlurred.add( depthAlphaNode.mix( color( 0x003399 ).mul( .3 ), 0 ) );
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blurredBlur.transparent = true;
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blurredBlur.side = THREE.DoubleSide;
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const depthMaterial = new THREE.MeshBasicNodeMaterial();
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depthMaterial.backdropNode = depthAlphaNode;
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depthMaterial.transparent = true;
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depthMaterial.side = THREE.DoubleSide;
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const checkerMaterial = new THREE.MeshBasicNodeMaterial();
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checkerMaterial.backdropNode = hashBlur( viewportSharedTexture(), .05 );
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checkerMaterial.backdropAlphaNode = checker( uv().mul( 3 ).mul( modelScale.xy ) );
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checkerMaterial.opacityNode = checkerMaterial.backdropAlphaNode;
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checkerMaterial.transparent = true;
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checkerMaterial.side = THREE.DoubleSide;
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const pixelMaterial = new THREE.MeshBasicNodeMaterial();
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pixelMaterial.backdropNode = viewportSharedTexture( screenUV.mul( 100 ).floor().div( 100 ) );
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pixelMaterial.transparent = true;
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// box / floor
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const box = new THREE.Mesh( new THREE.BoxGeometry( 2, 2, 2 ), blurredBlur );
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box.position.set( 0, 1, 0 );
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box.renderOrder = 1;
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scene.add( box );
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const floor = new THREE.Mesh( new THREE.BoxGeometry( 5, .01, 5 ), new THREE.MeshBasicNodeMaterial( {
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color: 0xff6600,
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opacityNode: positionWorld.xz.distance( 0 ).oneMinus().clamp(),
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transparent: true,
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depthWrite: false
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} ) );
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floor.position.set( 0, 0, 0 );
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scene.add( floor );
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// renderer
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renderer = new THREE.WebGPURenderer( /*{ antialias: true }*/ );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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renderer.setAnimationLoop( animate );
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renderer.toneMapping = THREE.NeutralToneMapping;
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renderer.toneMappingExposure = .9;
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document.body.appendChild( renderer.domElement );
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const controls = new OrbitControls( camera, renderer.domElement );
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controls.target.set( 0, 1, 0 );
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controls.update();
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window.addEventListener( 'resize', onWindowResize );
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// gui
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const materials = {
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'blurred': blurredBlur,
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'depth': depthMaterial,
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'checker': checkerMaterial,
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'pixel': pixelMaterial
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};
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const gui = new GUI();
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const options = { material: 'blurred' };
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box.material = materials[ options.material ];
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gui.add( box.scale, 'x', 0.1, 2, 0.01 );
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gui.add( box.scale, 'z', 0.1, 2, 0.01 );
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gui.add( options, 'material', Object.keys( materials ) ).onChange( name => {
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box.material = materials[ name ];
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} );
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}
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function onWindowResize() {
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camera.aspect = window.innerWidth / window.innerHeight;
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camera.updateProjectionMatrix();
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renderer.setSize( window.innerWidth, window.innerHeight );
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}
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function animate() {
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const delta = clock.getDelta();
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if ( mixer ) mixer.update( delta );
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renderer.render( scene, camera );
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}
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</script>
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</body>
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</html>
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