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141 lines
3.4 KiB
HTML
141 lines
3.4 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js webgpu - occlusion</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 - occlusion<br />
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The plane is green when the sphere is completely occluded.
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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 { nodeObject, uniform } from 'three/tsl';
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import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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let camera, scene, renderer, controls;
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class OcclusionNode extends THREE.Node {
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constructor( testObject, normalColor, occludedColor ) {
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super( 'vec3' );
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this.updateType = THREE.NodeUpdateType.OBJECT;
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this.uniformNode = uniform( new THREE.Color() );
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this.testObject = testObject;
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this.normalColor = normalColor;
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this.occludedColor = occludedColor;
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}
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async update( frame ) {
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const isOccluded = frame.renderer.isOccluded( this.testObject );
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this.uniformNode.value.copy( isOccluded ? this.occludedColor : this.normalColor );
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}
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setup( /* builder */ ) {
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return this.uniformNode;
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}
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}
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init();
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async function init() {
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camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 0.01, 100 );
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camera.position.z = 7;
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scene = new THREE.Scene();
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// lights
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const ambientLight = new THREE.AmbientLight( 0xb0b0b0 );
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const light = new THREE.DirectionalLight( 0xFFFFFF, 1.0 );
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light.position.set( 0.32, 0.39, 0.7 );
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scene.add( ambientLight );
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scene.add( light );
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// models
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const planeGeometry = new THREE.PlaneGeometry( 2, 2 );
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const sphereGeometry = new THREE.SphereGeometry( 0.5 );
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const plane = new THREE.Mesh( planeGeometry, new THREE.MeshPhongNodeMaterial( { color: 0x00ff00, side: THREE.DoubleSide } ) );
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const sphere = new THREE.Mesh( sphereGeometry, new THREE.MeshPhongNodeMaterial( { color: 0xffff00 } ) );
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const instanceUniform = nodeObject( new OcclusionNode( sphere, new THREE.Color( 0x0000ff ), new THREE.Color( 0x00ff00 ) ) );
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plane.material.colorNode = instanceUniform;
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sphere.position.z = - 1;
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sphere.occlusionTest = true;
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scene.add( plane );
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scene.add( sphere );
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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( render );
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document.body.appendChild( renderer.domElement );
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// controls
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controls = new OrbitControls( camera, renderer.domElement );
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controls.minDistance = 3;
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controls.maxDistance = 25;
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window.addEventListener( 'resize', onWindowResize );
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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 render() {
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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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