Can VisionOS take screenshots besides simultaneously pressing buttons

Hi, does anyone know if it is an easy way to determine the distance between floor and ceiling in vision Pro?

I'm developing 3D Scanner works on iPad. I'm using AVCapturePhoto and Photogrammetry Session. photoCaptureDelegate is like below: extension PhotoCaptureDelegate: AVCapturePhotoCaptureDelegate { func photoOutput(_ output: AVCapturePhotoOutput, didFinishProcessingPhoto photo: AVCapturePhoto, error: Error?) { let fileUrl = CameraViewModel.instance.imageDir!.appendingPathComponent("\(PhotoCaptureDelegate.name)\(id).heic") let img = CIImage(cvPixelBuffer: photo.pixelBuffer!, options: [ .auxiliaryDepth: true, .properties: photo.metadata ]) let depthData = photo.depthData!.converting(toDepthDataType: kCVPixelFormatType_DepthFloat32) let colorSpace = CGColorSpace(name: CGColorSpace.sRGB) let fileData = CIContext().heifRepresentation(of: img, format: .RGBA8, colorSpace: colorSpace!, options: [ .avDepthData: depthData ]) try? fileData!.write(to: fileUrl, options: .atomic) } } But, Photogrammetry session spits warning messages: Sample 0 missing LiDAR point cloud! Sample 1 missing LiDAR point cloud! Sample 2 missing LiDAR point cloud! Sample 3 missing LiDAR point cloud! Sample 4 missing LiDAR point cloud! Sample 5 missing LiDAR point cloud! Sample 6 missing LiDAR point cloud! Sample 7 missing LiDAR point cloud! Sample 8 missing LiDAR point cloud! Sample 9 missing LiDAR point cloud! Sample 10 missing LiDAR point cloud! The session creates a usdz 3d model but scale is not correct. I think the point cloud can help Photogrammetry session to find right scale, but I don't know how to attach point cloud.

I'm writing a RealityKit/ARKit app that runs on iOS. Starting with Xcode 16.0 beta 1, at least through Xcode 16.1 beta 2 (16B5014f), in the iOS 18 simulator, my app randomly crashes in about 20% of app sessions the first time it attempts to present an ARView. The crashes seem to occur at multiple points within RealityKit and Metal. Below, I've included screenshots of the call stacks of the crashes, which occur as a result of both EXC_BAD_ACCESS and assertion failures within RealityKit. The app only crashes in the iOS 18 simulator, and does not crash in the iOS 17 simulator or earlier. The app only crashes in the simulator, and does not crash on a device running iOS 18. Before I investigate further, I'd appreciate it if an Apple engineer could give me a sense of if these crashes are most likely the result of known issues within RealityKit and/or the simulator, or if your opinion is that there are probably bugs in my app's code. I've submitted several feedback issues in the past, and I'd love to submit this issue too, but I expect that I would spend many hours attempting to create a repro case in a sample app. Understandably, I'd rather not spend this time if an Apple engineer could tell me this is a known issue, for example. Thank you.

Hello Dev Community, I've been thinking over Apple's preference for USDZ for AR and 3D content, especially when there's the widely used GLTF. I'm keen to discuss and hear your insights on this choice. USDZ, backed by Apple, has seen a surge in the AR community. It boasts advantages like compactness, animation support, and ARKit compatibility. In contrast, GLTF too is a popular format with its own merits, like being an open standard and offering flexibility. Here are some of my questions toward the use of USDZ: Why did Apple choose USDZ over other 3D file formats like GLTF? What benefits does USDZ bring to Apple's AR and 3D content ecosystem? Are there any limitations of USDZ compared to other file formats? Could factors like compatibility, security, or integration ease have influenced Apple's decision? I would love to hear your thoughts on this. Feel free to share any experiences with USDZ or other 3D file formats within Apple's ecosystem!

Hello, I am trying to obtain the RealityKit URL. Can someone share please?

I have a neural network model for segmentation, I successfully integrated it and am getting a grayscale image. Next, I need to apply the segmentation mask in RealityKit to achieve the occlusion effect (like person segmentation). I tried doing it through post-processing and other methods, but none of them worked. Is there any example of how this can be done in RealityKit?

I'm wondering if it's possible to do Parallax Occlusion Mapping in RealityKit? Does RK's metal shader API provide enough? I think it would need to be able to discard fragments and thus can't be run as a deferred pass. Not sure though!

I have attempted to use VideoMaterial with HDR HLS stream, and also a TextureResource.DrawableQueue with rgba16Float in a ShaderGraphMaterial. I'm capturing to 64RGBAHalf with AVPlayerItemVideoOutput and converting that to rgba16Float. I don't believe it's displaying HDR properly or behaving like a raw AVPlayer. Since we can't configure any EDR metadata or color space for a RealityView, how do we display HDR video? Is using rgba16Float supposed to be enough? Is expecting the 64RGBAHalf capture to handle HDR properly a mistake and should I capture YUV and do the conversion myself? Thank you

I've created a minimal iOS RealityKit/ARKit app with only this view controller: import UIKit import RealityKit import ARKit class ViewController: UIViewController { var arView: ARView! override func viewDidLoad() { super.viewDidLoad() arView = ARView(frame: view.bounds, cameraMode: .nonAR, automaticallyConfigureSession: true) arView.autoresizingMask = [.flexibleWidth, .flexibleHeight] view.addSubview(arView) } } When I run this app in the iOS 18.1 simulator using Xcode 16.1 beta 2 (16B5014f), RealityKit logs the warnings included below to the console. I see similar warnings on the device, running iOS 18.0. Should I be concerned about any of these warnings? Please let me know if I should submit feedback reporting this issue. Thank you. Could not locate file 'default-binaryarchive.metallib' in bundle. Registering library (/Library/Developer/CoreSimulator/Volumes/iOS_22B5045f/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 18.1.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/CoreRE.framework/default.metallib) that already exists in shader manager. Library will be overwritten. Could not resolve material name 'engine:BuiltinRenderGraphResources/AR/suFeatheringCreateMergedOcclusionMask.rematerial' in bundle at '/Users/drew/Library/Developer/CoreSimulator/Devices/6BCC578D-5046-49E6-B149-390576C7241D/data/Containers/Bundle/Application/75E15C63-F1D2-487F-A057-EBA2D45582C3/ARViewFailApp.app'. Loading via asset path. Could not resolve material name 'engine:BuiltinRenderGraphResources/AR/arKitPassthrough.rematerial' in bundle at '/Users/drew/Library/Developer/CoreSimulator/Devices/6BCC578D-5046-49E6-B149-390576C7241D/data/Containers/Bundle/Application/75E15C63-F1D2-487F-A057-EBA2D45582C3/ARViewFailApp.app'. Loading via asset path. Could not resolve material name 'engine:BuiltinRenderGraphResources/AR/arSegmentationComposite.rematerial' in bundle at '/Users/drew/Library/Developer/CoreSimulator/Devices/6BCC578D-5046-49E6-B149-390576C7241D/data/Containers/Bundle/Application/75E15C63-F1D2-487F-A057-EBA2D45582C3/ARViewFailApp.app'. Loading via asset path. Could not resolve material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute0.rematerial' in bundle at '/Users/drew/Library/Developer/CoreSimulator/Devices/6BCC578D-5046-49E6-B149-390576C7241D/data/Containers/Bundle/Application/75E15C63-F1D2-487F-A057-EBA2D45582C3/ARViewFailApp.app'. Loading via asset path. Could not resolve material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute1.rematerial' in bundle at '/Users/drew/Library/Developer/CoreSimulator/Devices/6BCC578D-5046-49E6-B149-390576C7241D/data/Containers/Bundle/Application/75E15C63-F1D2-487F-A057-EBA2D45582C3/ARViewFailApp.app'. Loading via asset path. Could not resolve material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute2.rematerial' in bundle at '/Users/drew/Library/Developer/CoreSimulator/Devices/6BCC578D-5046-49E6-B149-390576C7241D/data/Containers/Bundle/Application/75E15C63-F1D2-487F-A057-EBA2D45582C3/ARViewFailApp.app'. Loading via asset path. Could not resolve material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute3.rematerial' in bundle at '/Users/drew/Library/Developer/CoreSimulator/Devices/6BCC578D-5046-49E6-B149-390576C7241D/data/Containers/Bundle/Application/75E15C63-F1D2-487F-A057-EBA2D45582C3/ARViewFailApp.app'. Loading via asset path. Could not resolve material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute4.rematerial' in bundle at '/Users/drew/Library/Developer/CoreSimulator/Devices/6BCC578D-5046-49E6-B149-390576C7241D/data/Containers/Bundle/Application/75E15C63-F1D2-487F-A057-EBA2D45582C3/ARViewFailApp.app'. Loading via asset path. Could not resolve material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute5.rematerial' in bundle at '/Users/drew/Library/Developer/CoreSimulator/Devices/6BCC578D-5046-49E6-B149-390576C7241D/data/Containers/Bundle/Application/75E15C63-F1D2-487F-A057-EBA2D45582C3/ARViewFailApp.app'. Loading via asset path. Could not resolve material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute6.rematerial' in bundle at '/Users/drew/Library/Developer/CoreSimulator/Devices/6BCC578D-5046-49E6-B149-390576C7241D/data/Containers/Bundle/Application/75E15C63-F1D2-487F-A057-EBA2D45582C3/ARViewFailApp.app'. Loading via asset path. Could not resolve material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute7.rematerial' in bundle at '/Users/drew/Library/Developer/CoreSimulator/Devices/6BCC578D-5046-49E6-B149-390576C7241D/data/Containers/Bundle/Application/75E15C63-F1D2-487F-A057-EBA2D45582C3/ARViewFailApp.app'. Loading via asset path. Could not resolve material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute8.rematerial' in bundle at '/Users/drew/Library/Developer/CoreSimulator/Devices/6BCC578D-5046-49E6-B149-390576C7241D/data/Containers/Bundle/Application/75E15C63-F1D2-487F-A057-EBA2D45582C3/ARViewFailApp.app'. Loading via asset path. Could not resolve material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute9.rematerial' in bundle at '/Users/drew/Library/Developer/CoreSimulator/Devices/6BCC578D-5046-49E6-B149-390576C7241D/data/Containers/Bundle/Application/75E15C63-F1D2-487F-A057-EBA2D45582C3/ARViewFailApp.app'. Loading via asset path. Could not resolve material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute10.rematerial' in bundle at '/Users/drew/Library/Developer/CoreSimulator/Devices/6BCC578D-5046-49E6-B149-390576C7241D/data/Containers/Bundle/Application/75E15C63-F1D2-487F-A057-EBA2D45582C3/ARViewFailApp.app'. Loading via asset path. Could not resolve material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute11.rematerial' in bundle at '/Users/drew/Library/Developer/CoreSimulator/Devices/6BCC578D-5046-49E6-B149-390576C7241D/data/Containers/Bundle/Application/75E15C63-F1D2-487F-A057-EBA2D45582C3/ARViewFailApp.app'. Loading via asset path. Could not resolve material name 'engine:BuiltinRenderGraphResources/AR/arInPlacePostProcessCombinedPermute12.rematerial' in bundle at '/Users/drew/Library/Developer/CoreSimulator/Devices/6BCC578D-5046-49E6-B149-390576C7241D/data/Containers/Bundle/Application/75E15C63-F1D2-487F-A057-EBA2D45582C3/ARViewFailApp.app'. Loading via asset path. ... Compiler failed to build request makeRenderPipelineState failed [reading from a rendertarget is not supported]. Pipeline for technique meshShadowCasterProgrammableBlending failed compilation!

My app uses RealityKit with an arView with World tracking and a scene construction mesh. Working well. As I understand it, the default camera selection using ARIkit, is ultra wide camera. However, in the camera app, there is a 0.5 option to increase the field of view further. Is there any way to enable this 0.5x option using code? Or any control over FOV using RealityKit and a mesh? Thanks!

I am working on a RealityView on iOS 18 that needs to render objects farther away than 1,000 meters. My app is used outside in open areas. I am using RealityView with content.camera = .spatialTracking and I have turned off occlusion, collisions, and plane detection with a simple scene understanding like this. let configuration = SpatialTrackingSession.Configuration( tracking: [.camera], sceneUnderstanding: [], //We don't want occlusions, collisions, etc camera: .back) let session = SpatialTrackingSession() if let unavailable = await session.run(configuration) { print("unavailable \(unavailable)") } Is this possible with spatialTracking with RealityView or with ARView? I have my RealityView working on visionOS inside an ImmersiveSpace. On visionOS I don't have the camera as a passthrough, it is virtual scene and it has wold tracking set up via the WorldTrackingProvider and I can render objects father away than 1000 meters. I would like to do the same thing on iOS. I don't need to have the camera pass through, but I do need to have the world tracking. I see that PerspectiveCameraComponent lets me set the near and far clipping planes, but I don't see how I can use that camera with world tracking.

I have various USDZ files in my visionOS app. Loading the USDZ files works quite well. I only have problems with the positioning of the 3D model. For example, I have a USDZ file that is displayed directly above me. I can't move the model or perform any other actions on it. If I sit on a chair or stand up again, the 3D model automatically moves with me. This is my source code for loading the USDZ files: struct ImmersiveView: View { @State var modelName: String @State private var loadedModel = Entity() var body: some View { RealityView { content in if let usdModel = try? await Entity(named: modelName) { print("====> \(modelName) : \(usdModel) <====") let bounds = usdModel.visualBounds(relativeTo: nil).extents usdModel.scale = SIMD3<Float>(1.0, 1.0, 1.0) usdModel.position = SIMD3<Float>(0.0, 0.0, 0.0) usdModel.components.set(CollisionComponent(shapes: [.generateBox(size: bounds)])) usdModel.components.set(HoverEffectComponent()) usdModel.components.set(InputTargetComponent()) loadedModel = usdModel content.add(usdModel) } } } } I only want the 3D models from the USDZ files to be displayed later, and later on, to be able to move them via gestures. Moving the models is step 2. First, I need to make sure the models are displayed correctly. What have I forgotten or done wrong?

Hi I have setup animation using timeline in Reality Composer Pro like below This get triggered by a notification posts from the code.Once this time line triggered, I want to repeat this 2 animations in the timeline unitll user takes the next action. How can I make these repeat forever?

I have an app which have an Immersive Space view and it needs the user to have a button in the bottom which have a fixed place in front of the user head like a dashboard in game or so but when the user get too close to any3d object in the view it could cover the button and make it inaccessible and it mainly would prevent the app for being approved like that in appstoreconnect I was working before on SceneKit and there was something like camera view Znear and Zfar which decide when to hide the 3d model if it comes too close or gets too far and I wonder if there is something like that in realityView / RealityKit 4. Here is My Code and the screenshots follows import SwiftUI import RealityKit struct ContentView: View { @State var myHead: Entity = { let headAnchor = AnchorEntity(.head) headAnchor.position = [-0.02, -0.023, -0.24] return headAnchor }() @State var clicked = false var body: some View { RealityView { content, attachments in // create a 3d box let mainBox = ModelEntity(mesh: .generateBox(size: [0.1, 0.1, 0.1])) mainBox.position = [0, 1.6, -0.3] content.add(mainBox) content.add(myHead) guard let attachmentEntity = attachments.entity(for: "Dashboard") else {return} myHead.addChild(attachmentEntity) } attachments: { // SwiftUI Inside Immersivre View Attachment(id: "Dashboard") { VStack { Spacer() .frame(height: 300) Button(action: { goClicked() }) { Text(clicked ? "⏸️" : "▶️") .frame(maxWidth: 48, maxHeight: 48, alignment: .center) .font(.extraLargeTitle) } .buttonStyle(.plain) } } } } func goClicked() { clicked.toggle() } }

If I import a USDZ model with blendMode set to alpha, occlusion does not work on iPhone with iOS 18. How should transparent materials and occlusion be properly used in the new RealityKit? Additionally, new artifacts have appeared when working with transparent objects overlapping each other. The transparency results do not blend but rather parts of the model just not rendering.

Apple's own USDZ files from their website does not display properly both in OPReview and in Keynote when imported. It displays properly, however, in Reality Converter bit with this error: "Invalid USD shader node in USD file Shader nodes must have “id” as the implementationSource, with id values that begin with “Usd”. Also, shader inputs with connections must each have a single, valid connection source." I tried importing other models from external sources and they work without any issue at all. Is there any potential fix or workaround this? Thanks in advance.

Hello all, I am building for visionOS with another engineer and using Reality Composer Pro to validate usd files. The starting position of my animated usdz, its position when it's first loaded, is not the same as the first frame of the animation on the usdz file For testing, I am using the AR Quick Look asset 'toy_biplane_idle.usdz' which demonstrates the same 'error' we're currently getting with our own usdz files. When the usdz is loaded, it is on the ground plane - But when the aniamtion is played, the plane 'snaps' to the position of the first frame of the animation - This 'snapping' behavior is giving us problems. We want the user ot see this plane in its static 'load' position with the option to play the animation. But we dont want it to snap when the user presses play Is it possible to load the .usdz in the position specified by the first frame of the animation? What is the best way to fix this issue. Thanks!

Hi, I am trying to use PhotogrammetrySample input sequence according to the WWDC video. I modified only the following code in the sample: var images = try FileManager.default.contentsOfDirectory(at: captureFolderManager.imagesFolder, includingPropertiesForKeys: nil, options: .skipsHiddenFiles) let inputSequence = images.lazy.compactMap { file in return self.loadSampleAndMask(file: file) } // Next line causes the exception photogrammetrySession = try PhotogrammetrySession( input: inputSequence, configuration: configuration) private func loadSampleAndMask(file: URL) -> PhotogrammetrySample? { do { var sample = try PhotogrammetrySample(contentsOf: file) return sample } catch { return nil } } I am getting following runtime error: Thread 1: EXC_BREAKPOINT (code=1, subcode=0x240d88904)

I'm building an iOS/iPadOS app for iOS 18+ using the new RealityView in SwiftUI. (I may add visionOS, but I'm not focusing on it right now.) The 3D scene I'm rendering is fairly simple (just a few dozen vertices and a couple of textures), and I'd like to render it at 120fps on ProMotion devices if possible. I tried setting CADisableMinimumFrameDurationOnPhone to true in the info plist, but it had no effect. The frame rate in the GPU Report in Xcode stays capped at 60fps, and the gauge even tops out at 60. My question is kind of the opposite of this post, which asks how to limit the frame rate of a RealityView. I'm on Xcode 16 beta 5 on macOS Sonoma and iOS 18.0 beta 6 on my iPhone 15 Pro.