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| 1 | +import { Engine } from '@babylonjs/core/Engines/engine'; |
| 2 | +import { WebGPUEngine } from '@babylonjs/core/Engines/webgpuEngine'; |
| 3 | +import { Scene } from '@babylonjs/core/scene'; |
| 4 | +import { ArcRotateCamera } from '@babylonjs/core/Cameras/arcRotateCamera'; |
| 5 | +import { HemisphericLight } from '@babylonjs/core/Lights/hemisphericLight'; |
| 6 | +import { Vector3 } from '@babylonjs/core/Maths/math.vector'; |
| 7 | +import { Color4 } from '@babylonjs/core/Maths/math.color'; |
| 8 | +import { TilesRenderer } from '3d-tiles-renderer/babylonjs'; |
| 9 | +import { TilesFadePlugin } from '3d-tiles-renderer/babylonjs/plugins'; |
| 10 | +import GUI from 'lil-gui'; |
| 11 | + |
| 12 | +const DEFAULT_TILESET_URL = 'https://raw.githubusercontent.com/NASA-AMMOS/3DTilesSampleData/master/msl-dingo-gap/0528_0260184_to_s64o256_colorize/0528_0260184_to_s64o256_colorize/0528_0260184_to_s64o256_colorize_tileset.json'; |
| 13 | +const searchParams = new URLSearchParams( location.search ); |
| 14 | +const TILESET_URL = searchParams.get( 'url' ) || DEFAULT_TILESET_URL; |
| 15 | +const usesBundledTiles = TILESET_URL.startsWith( '/data/' ); |
| 16 | +const canvas = document.getElementById( 'renderCanvas' ); |
| 17 | +const requestedWebGPU = searchParams.has( 'webgpu' ); |
| 18 | +const backendElement = document.getElementById( 'backend' ); |
| 19 | + |
| 20 | +async function createEngine() { |
| 21 | + |
| 22 | + if ( requestedWebGPU ) { |
| 23 | + |
| 24 | + if ( ! navigator.gpu ) { |
| 25 | + |
| 26 | + throw new Error( 'WebGPU was requested but navigator.gpu is unavailable.' ); |
| 27 | + |
| 28 | + } |
| 29 | + |
| 30 | + const engine = new WebGPUEngine( canvas, { |
| 31 | + antialias: false, |
| 32 | + enableAllFeatures: true, |
| 33 | + setMaximumLimits: true, |
| 34 | + enableGPUDebugMarkers: false, |
| 35 | + useLargeWorldRendering: false, |
| 36 | + } ); |
| 37 | + engine.enableOfflineSupport = false; |
| 38 | + engine.useReverseDepthBuffer = false; |
| 39 | + engine.compatibilityMode = true; |
| 40 | + await engine.initAsync(); |
| 41 | + engine.renderEvenInBackground = true; |
| 42 | + engine.getCaps().parallelShaderCompile = undefined; |
| 43 | + return engine; |
| 44 | + |
| 45 | + } |
| 46 | + |
| 47 | + return new Engine( canvas, false, { |
| 48 | + useLargeWorldRendering: true, |
| 49 | + preserveDrawingBuffer: true, |
| 50 | + } ); |
| 51 | + |
| 52 | +} |
| 53 | + |
| 54 | +async function init() { |
| 55 | + |
| 56 | + const engine = await createEngine(); |
| 57 | + engine.setHardwareScalingLevel( 1 / window.devicePixelRatio ); |
| 58 | + backendElement.textContent = requestedWebGPU ? 'WebGPU' : 'WebGL2'; |
| 59 | + |
| 60 | + const scene = new Scene( engine ); |
| 61 | + scene.clearColor = new Color4( 0.05, 0.05, 0.05, 1 ); |
| 62 | + scene.useRightHandedSystem = true; |
| 63 | + |
| 64 | + const camera = new ArcRotateCamera( |
| 65 | + 'camera', |
| 66 | + - Math.PI / 2, |
| 67 | + Math.PI / 2.5, |
| 68 | + 50, |
| 69 | + Vector3.Zero(), |
| 70 | + scene, |
| 71 | + ); |
| 72 | + camera.attachControl( canvas, true ); |
| 73 | + camera.minZ = 0.1; |
| 74 | + camera.maxZ = 1000; |
| 75 | + if ( usesBundledTiles ) { |
| 76 | + |
| 77 | + camera.setTarget( new Vector3( 216, - 77, 32 ) ); |
| 78 | + camera.radius = 400; |
| 79 | + |
| 80 | + } |
| 81 | + |
| 82 | + const light = new HemisphericLight( 'light', new Vector3( 0, 1, 0 ), scene ); |
| 83 | + light.intensity = 1.5; |
| 84 | + |
| 85 | + const tiles = new TilesRenderer( TILESET_URL, scene ); |
| 86 | + tiles.group.rotation.x = Math.PI / 2; |
| 87 | + const fadePlugin = new TilesFadePlugin(); |
| 88 | + tiles.registerPlugin( fadePlugin ); |
| 89 | + |
| 90 | + const params = { |
| 91 | + useFade: true, |
| 92 | + fadeRootTiles: false, |
| 93 | + fadeDuration: Number( searchParams.get( 'fadeDuration' ) ?? 0.5 ), |
| 94 | + errorTarget: Number( searchParams.get( 'errorTarget' ) ?? 6 ), |
| 95 | + renderScale: 1, |
| 96 | + fadingTiles: '0 tiles', |
| 97 | + visibleTiles: '0 tiles', |
| 98 | + }; |
| 99 | + |
| 100 | + const gui = new GUI(); |
| 101 | + const fadeFolder = gui.addFolder( 'fade' ); |
| 102 | + fadeFolder.add( params, 'useFade' ); |
| 103 | + fadeFolder.add( params, 'fadeRootTiles' ); |
| 104 | + fadeFolder.add( params, 'fadeDuration', 0, 5 ).listen(); |
| 105 | + fadeFolder.add( params, 'errorTarget', 0, 1000 ); |
| 106 | + fadeFolder.add( params, 'renderScale', 0.1, 1, 0.05 ).onChange( value => { |
| 107 | + |
| 108 | + engine.setHardwareScalingLevel( 1 / ( value * window.devicePixelRatio ) ); |
| 109 | + |
| 110 | + } ); |
| 111 | + fadeFolder.add( params, 'fadingTiles' ).listen().disable(); |
| 112 | + fadeFolder.add( params, 'visibleTiles' ).listen().disable(); |
| 113 | + gui.open(); |
| 114 | + |
| 115 | + scene.onBeforeRenderObservable.add( () => { |
| 116 | + |
| 117 | + fadePlugin.fadeRootTiles = params.fadeRootTiles; |
| 118 | + fadePlugin.fadeDuration = params.useFade ? params.fadeDuration * 1000 : 0; |
| 119 | + tiles.errorTarget = params.errorTarget; |
| 120 | + tiles.update(); |
| 121 | + |
| 122 | + params.fadingTiles = fadePlugin.fadingTiles + ' tiles'; |
| 123 | + params.visibleTiles = tiles.visibleTiles.size + ' tiles'; |
| 124 | + |
| 125 | + } ); |
| 126 | + |
| 127 | + engine.runRenderLoop( () => scene.render() ); |
| 128 | + window.addEventListener( 'resize', () => engine.resize() ); |
| 129 | + |
| 130 | +} |
| 131 | + |
| 132 | +init().catch( error => { |
| 133 | + |
| 134 | + backendElement.textContent = `blocked: ${ error.message }`; |
| 135 | + backendElement.dataset.error = error.message; |
| 136 | + console.error( error ); |
| 137 | + |
| 138 | +} ); |
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