The issue reproducible with empty project. When you run it and tap "Open immersive space" it takes a couple of minutes to respond. The issue only reproducible on real device with debugger attached. Reproducible other developers too (not specific to my environment). Issue doesn't exists in Xcode 16.
Afer initial long delay subsequent opens works fine.
Console logs:
nw_socket_copy_info [C1:2] getsockopt TCP_INFO failed [102: Operation not supported on socket]
nw_socket_copy_info getsockopt TCP_INFO failed [102: Operation not supported on socket]
Failed to set dependencies on asset 9303749952624825765 because NetworkAssetManager does not have an asset entity for that id.
void * _Nullable NSMapGet(NSMapTable * _Nonnull, const void * _Nullable): map table argument is NULL
PSO compilation completed for driver shader copyFromBufferToTexture so=0 sbpr=256 sbpi=16384 ss=(64, 64, 1) p=70 sc=1 ds=0 dl=0 do=(0, 0, 0) in 1997
XPC connection interrupted
<<<< FigAudioSession(AV) >>>> audioSessionAVAudioSession_CopyMXSessionProperty signalled err=-19224 (kFigAudioSessionError_UnsupportedOperation) (getMXSessionProperty unsupported) at FigAudioSession_AVAudioSession.m:606
Failed to load item AXCodeItem<0x14706f250> [Rank:6000] SpringBoardUIServices [AXBundle name:/System/Library/AccessibilityBundles/SpringBoardUIServices.axbundle/SpringBoardUIServices] [Platforms and Targets:{ iOS = SpringBoardUIServices; } Framework] [Excluded: (null)]. error: Error Domain=AXLoading Code=0 "URL does not exist: file:///System/Library/AccessibilityBundles/SpringBoardUIServices.axbundle" UserInfo={NSLocalizedDescription=URL does not exist: file:///System/Library/AccessibilityBundles/SpringBoardUIServices.axbundle}
Failed to load item AXCodeItem<0x14706f250> [Rank:6000] SpringBoardUIServices [AXBundle name:/System/Library/AccessibilityBundles/SpringBoardUIServices.axbundle/SpringBoardUIServices] [Platforms and Targets:{ iOS = SpringBoardUIServices; } Framework] [Excluded: (null)]. error: Error Domain=AXLoading Code=0 "URL does not exist: file:///System/Library/AccessibilityBundles/SpringBoardUIServices.axbundle" UserInfo={NSLocalizedDescription=URL does not exist: file:///System/Library/AccessibilityBundles/SpringBoardUIServices.axbundle}
[b30780-MRUIFeedbackTypeButtonWithBackgroundTouchDown] Playback timed out before completion (after 3111 ms)
Failed to set dependencies on asset 7089614247973236977 because NetworkAssetManager does not have an asset entity for that id.
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This post documents an issue I reported in feedback FB19610114 and see if anyone knows of a workaround. Here is a copy of the feedback.
Short version
Manipulation (SwiftUI OR RealityKit) fails to translate entities after changing rooms. By changing rooms, I mean a human wearing an Apple Vision Pro leaving one room and entering another room. Once this issue occurs, it impacts all apps that use these features. A device restart is the only solution I have to fix it.
Feedback FB19610114
This is an odd one. I'm using the new Manipulation Component in visionOS 26. Most of the time this works well. Sometime it stops working and when it does the only way to get it working again is to reboot the headset.
When this happens, I can continue to rotate and scale items, but translation no longer works. It is as if the item is stuck to a fixed point in the parent scene (window, volume, etc). When this bug occurs, it affects every app across the entire operating system that is using manipulation, including the RealityKit component AND the SwiftUI version. This is not limited to one app and is not limited to apps that I am working on. Once this error occurs, it affects literally any application across the operating system that is using this API, including apps from Apple.
I won't speculate on the cause of this, but I do know of one way where I can always get it to happen.
Here is how to reproduce it:
Make an Xcode project with a single entity that uses the Manipulation Component. There is no need to customize the configuration of this component. The default implementation will work.
Build and run this app on device. You can keep running from device or quit and launch the app like normal on device.
Open the app and manipulate the entity - it should work as expected.
Physically walk into another room. It is vital that you leave the current room that you are in and enter a different room entirely.
Use the digital crown to recenter your view and bring your window or volume to you.
Test the manipulation on the entity again - it should still be working as expected at this point.
Physically, move yourself and your headset into the original room where you started.
Use the digital crown to recenter your view and bring your window or volume to you.
Test the manipulation on the entity again - you should now see the issue.
When I follow the steps above, then 100% of the time manipulation translation stops working at this point. It will impact any application using this API. The only way to fix it is to restart my headset.
A few points to keep in mind
It does not matter if an app is actively being run from Xcode.
When this occurs, it impacts every single app, not just one.
When this occurs, rotation and scaling continue to work, but the entity/view cannot be translated.
This impacts BOTH the SwiftUI version and the RealityKit version.
When this occurs, the only way to "fix" it is to reboot the device.
The new Mac virtual display feature on visionOS 2 offers a curved/panoramic window. I was wondering if this is simply a property that can be applied to a window, or if it involves an immersive mode or SceneKit/RealityKit?
We seen to have found an issue when using the pushWindow action on visionOS. The issue occurs if the app is backgrounded then reopened by selecting the apps icon on the home screen. Any window that is opened via the pushWindow action is then dismissed. We've been able to replicate the issue in a small sample project.
Replication steps
Open app
Open window via the push action
Press the digital crown
On the home screen select the apps icon again
The pushed window will now be dismissed.
There is a sample project linked here that shows off the issue, including a video of the bug in progress
Spatial widget is a new feature of visionos 26. I notice The system’s Photo app can add a Spatial Image in the widget. I wonder if third apps can use spatial image or any 3D content in it's widget? I try to use RealityView in widget and it run with a crash.
So does spatial Image in widget only supported by the system Photo app, and not available to developers now?
Hi, I am trying to load files from the Apple Vision Pro's storage into a Unity App (using Apple visionOS XR Plugin and not PolySpatial package). So far, I've tried using UnitySimpleFileBrowser and UnityStandaloneFileBrowser (both aren't made for the Vision Pro and don't work there), and then implemented my own naive file browser that at least allows me to view directories (that I can see from the App Sandbox). This is of course very limited:
Gray folders can't be accessed, the only 3 available ones don't contain anything where a user would put files through the "Files" app.
I know that an app can request access to these "Files & Folders":
So my question is: Is there a way to request this access for a Unity-built app at the moment? If yes, what do I need to do? I've looked into the generated Xcode project's "Capabilities", but did not find anything related to file access. Any help is appreciated!
let component = GestureComponent(DragGesture())
iOS: ☑️
visionOS: ❌
This bug from beta to public, please fix it.
Sorry for the cross-post but it's now two days in and this isn't fixed.
If you try to use Xcode 16.3b3 with visionOS, it won't download the visionOS SDK, gives a 'network error' so you can't use the latest beta for Apple Vision Pro.
FB16927025
FB16917874
FB16910449
Hi guys,
I noticed that Apple created a really engaging visual effect for browsing spatial videos in the app. The video appears embedded in glass panel with glowing edges and even shows a parallax effect as you move around. When I tried to display the stereo video using RealityView, however, the video entity always floats above the panel.
May I ask how does VisionOS implement this effect? Is there any approach to achieve this effect or example code I can use in my own code.
Thanks!
Hi I know it's possible to play equirectangular VR180 video either SBS or MV-HEVC. And for fisheye video, the only way I know is to convert it into an AIVU for playback.
Is there any way to directly play fisheye video using AVPlayer? Thanks a lot!
Hi Apple Team,
We noticed the following exciting changelog in the latest macOS 26 beta:
A new algorithm significantly improves PhotogrammetrySession reconstruction quality of low-texture objects not captured with the ObjectCaptureSession front end. It will be downloaded and cached once in the background when the PhotogrammetrySession is used at runtime. If network isn’t available at that time, the old low quality model will be used until the new one can be downloaded. There is no code change needed to get this improved model. (145220451)
However after trying this on the latest beta and running some tests we do not see any differences on objects with low textures such as single coloured surfaces. Is there anything we are missing? the machine is definitely connected to the internet but we have no way of knowing from the logs if the new model is being used?
thanks
Hello,
Let me ask you a question about Apple Immersive Video.
https://www.apple.com/newsroom/2024/07/new-apple-immersive-video-series-and-films-premiere-on-vision-pro/
I am currently considering implementing a feature to play Apple Immersive Video as a background scene in the app I developed, using 3DCG-created content converted into Apple Immersive Video format.
First, I would like to know if it is possible to integrate Apple Immersive Video into an app.
Could you provide information about the required software and the integration process for incorporating Apple Immersive Video into an app?
It would be great if you could also share any helpful website resources.
I am considering creating Apple Immersive Video content and would like to know about the necessary equipment and software for producing both live-action footage and 3DCG animation videos.
As I mentioned earlier, I’m planning to play Apple Immersive Video as a background in the app. In doing so, I would also like to place some 3D models as RealityKit entities and spatial audio elements.
I’m also planning to develop the visionOS app as a Full Space Mixed experience. Is it possible to have an immersive viewing experience with Apple Immersive Video in Full Space Mixed mode? Does Apple Immersive Video support Full Space Mixed?
I’ve asked several questions, and that’s all for now. Thank you in advance!
Suppose there was an immersiveSpace, and an Entity() being added to the space as child entity of the content. This entity is responsible for playing background music by calling prepareAudio, gaining a controller and play the music. (check the basic code below)
When it was playing music, a .plain window and an immersiveSpace are both presented. I believe this immersiveSpace is holding the handle of the controller so as long as immersiveSpace is open, the music won't stop.
However if I close the .plain window (by closing system-level close button), the music just stopped. But the immersiveSpace is still open. If right now I check the value of controller.isPlaying, it was still true. But you just cannot hear the music anymore.
To reproduce, simply open an visionOS template App project, selecting volume and full immersive, and replace some code inImmersiveView.swift with the code below. Also simply drag any .mp3 file and replace the AudioFileResource's name. And you could reproduce this bug.
RealityView { content in
// Add the initial RealityKit content
if let immersiveContentEntity = try? await Entity(named: "Immersive", in: realityKitContentBundle) {
content.add(immersiveContentEntity)
// Put skybox here. See example in World project available at
// https://developer.apple.com/
if let audioResource = try? await AudioFileResource(named: "anyMP3file.mp3") {
let ent = Entity()
immersiveContentEntity.addChild(ent)
let controller = ent.prepareAudio(audioResource)
controller.play()
}
}
}
I wonder why this happen? I mean how should I keep the music playing when I close the .plain window?
Thanks!
We have been using RoomPlan in our app for 2+ years. Through a combination of in-app and manual coaching on scanning best practices, most users are able to achieve high-quality scans on a consistent basis.
In recent weeks, however, we have observed an increase in reports of degraded scanning performance, even from veteran users who had not previously encountered issues. The RoomCaptureView overlay is jittery and crooked, and the resulting scan file has significant issues, even for simple, well-lit rectangular rooms.
It is difficult to troubleshoot these issues given the number of variables at play, and the overall volume of reports is still relatively low, but we'd appreciate any guidance on known issues or workarounds that could help unblock our users who are being affected by this. I noticed that this post includes an acknowledgement of FB14454922 and FB15035788. Our issues seem slightly different as the scans are simply inaccurate and jittery without failing outright. I haven't found any other threads on similar issues.
We're developing an iOS application that integrates RoomCaptureSession with ARSCNView for room scanning. Our implementation differs from the standard RoomCaptureView because we need custom UI guidance with 3D dots placed in the scanning environment to guide users through the capture process.
Bug Description:
The application crashes when users attempt to scan multiple rooms or apartments in sequence. The crash specifically occurs with the following pattern:
User successfully scans first room with multiple hotspots (working correctly)
User stops scanning, moves to a new room
In the new room, first 1-2 hotspots work correctly
Application crashes when attempting to scan additional hotspots
Technical Details:
Error: SLAM Anchor assertion failure in SlamAnchor.cpp:37 : HasValidPose()
Crash occurs in Thread 27 with CAPIDetectionOutputFwdNode
Error suggests invalid positioning when placing AR anchors
Steps to Reproduce:
Start room scan
Complete multiple hotspot captures in first room
Stop scanning
Start new room scan
Capture 1-2 hotspots successfully
Attempt additional hotspot captures -> crashes
Attempted Solutions:
Implemented anchor cleanup between sessions
Added position validation before anchor placement
Implemented ARSession error handling
Added proper thread management for AR operations
Environment:
Device: iPhone 14 Pro (LiDAR equipped)
iOS Version: 18.1.1 (22B91)
Testing through TestFlight
Crash Log Details:
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Triggered by Thread: 27
Thread 27 Crashed:
0 libsystem_kernel.dylib 0x00000001f0cc91d4 __pthread_kill + 8
1 libsystem_pthread.dylib 0x0000000228e12ef8 pthread_kill + 268
2 libsystem_c.dylib 0x00000001a86bbad8 abort + 128
3 AppleCV3D 0x0000000234d71a28 cv3d::vio::capi::SlamAnchor::SlamAnchor
Question:
Is there a recommended approach for handling multiple room captures with custom ARSCNView integration? The standard RoomCaptureView implementation doesn't show this behavior, but we need the custom guidance functionality that ARSCNView provides.
Crash Log
Code and full crash logs can be provided if needed.
This is related to the WWDC presentation, What's new in Metal rendering for immersive apps..
Specifically, the macOS spatial streaming to visionOS feature: For reference: the page in the docs.
The presentation demonstrates it using a full immersive space and Metal rendering using compositor services.
I'd like clarity on a few things:
Is the remote device wireless, or must the visionOS device be connected via a wired connected?
Is there a limit to the number of remote devices, and if not, could macOS render different things per remote device simultaneously?
Can I also use mixed mode with passthrough enabled, instead of just a fully-immersive mode?
Can I use RealityKit instead of Metal? If so, may I have an example, or would someone point to an example?
For the M2 Apple Vision Pro, there's "a general guideline, we recommend no more than 500 thousand triangles for an immersive scene, with 250 thousand for applications in the shared space." --https://developer.apple.com/videos/play/wwdc2024/10186/?time=147
Is there a revised recommendation for the M5 Apple Vision Pro?
I'm getting the following error message when compiling the Apple provided sample, Spaceship game for the Apple Visio Pro. I've already tried deleting the derived data resetting the package cache and restarting Xcode but still getting the following error: [xrsimulator] Exception thrown during compile: Cannot get rkassets content for path /Users/myoungkang/Downloads/CreatingASpaceshipGame/Packages/Studio/Sources/Studio/Studio.rkassets because 'The file “Studio.rkassets” couldn’t be opened because you don’t have permission to view it.'
error: Tool exited with code 1
Topic:
Spatial Computing
SubTopic:
General
Hi,
we've been through the Explore Object Tracking for visionOS and worked through the sample code ExploringObjectTrackingWithARKit.
What we'd really like to see is Object Tracking for iOS using devices with either LiDAR or the TrueDepth/RGB cameras.
I'm developing a VisionOS app with bouncing ball physics and struggling to achieve natural bouncing behavior using RealityKit's physics system. Despite following Apple's recommended parameters, the ball loses significant energy on each bounce and doesn't behave like a real basketball, tennis ball, or football would.
With identical physics parameters (restitution = 1.0), RealityKit shows significant energy loss. I've had to implement a custom physics system to compensate, but I want to use native RealityKit physics. It's impossible to make it work by applying custom impulses.
Ball Physics Setup (Following Apple Forum Recommendations)
// From PhysicsManager.swift
private func createBallEntityRealityKit() -> Entity {
let ballRadius: Float = 0.05
let ballEntity = Entity()
ballEntity.name = "bouncingBall"
// Mesh and material
let mesh = MeshResource.generateSphere(radius: ballRadius)
var material = PhysicallyBasedMaterial()
material.baseColor = .init(tint: .cyan)
material.roughness = .float(0.3)
material.metallic = .float(0.8)
ballEntity.components.set(ModelComponent(mesh: mesh, materials: [material]))
// Physics setup from Apple Developer Forums
let physics = PhysicsBodyComponent(
massProperties: .init(mass: 0.624), // Seems too heavy for 5cm ball
material: PhysicsMaterialResource.generate(
staticFriction: 0.8,
dynamicFriction: 0.6,
restitution: 1.0 // Perfect elasticity, yet still loses energy
),
mode: .dynamic
)
ballEntity.components.set(physics)
ballEntity.components.set(PhysicsMotionComponent())
// Collision setup
let collisionShape = ShapeResource.generateSphere(radius: ballRadius)
ballEntity.components.set(CollisionComponent(shapes: [collisionShape]))
return ballEntity
}
Ground Plane Physics
// From GroundPlaneView.swift
let groundPhysics = PhysicsBodyComponent(
massProperties: .init(mass: 1000),
material: PhysicsMaterialResource.generate(
staticFriction: 0.7,
dynamicFriction: 0.6,
restitution: 1.0 // Perfect bounce
),
mode: .static
)
entity.components.set(groundPhysics)
Wall Physics
// From WalledBoxManager.swift
let wallPhysics = PhysicsBodyComponent(
massProperties: .init(mass: 1000),
material: PhysicsMaterialResource.generate(
staticFriction: 0.7,
dynamicFriction: 0.6,
restitution: 0.85 // Slightly less than ground
),
mode: .static
)
wall.components.set(wallPhysics)
Collision Detection
// From GroundPlaneView.swift
content.subscribe(to: CollisionEvents.Began.self) { event in
guard physicsMode == .realityKit else { return }
let currentTime = Date().timeIntervalSince1970
guard currentTime - lastCollisionTime > 0.1 else { return }
if event.entityA.name == "bouncingBall" || event.entityB.name == "bouncingBall" {
let normal = event.collision.normal
// Distinguish between wall and ground collisions
if abs(normal.y) < 0.3 { // Wall bounce
print("Wall collision detected")
} else if normal.y > 0.7 { // Ground bounce
print("Ground collision detected")
}
lastCollisionTime = currentTime
}
}
Issues Observed
Energy Loss: Despite restitution = 1.0 (perfect elasticity), the ball loses ~20-30% energy per bounce
Wall Sliding: Ball tends to slide down walls instead of bouncing naturally
No Damping Control: Comments mention damping values but they don't seem to affect the physics
Change in mass also doesn't do much.
Custom Physics System (Workaround)
I've implemented a custom physics system that manually calculates velocities and applies more realistic restitution values:
// From BouncingBallComponent.swift
struct BouncingBallComponent: Component {
var velocity: SIMD3<Float> = .zero
var angularVelocity: SIMD3<Float> = .zero
var bounceState: BounceState = .idle
var lastBounceTime: TimeInterval = 0
var bounceCount: Int = 0
var peakHeight: Float = 0
var totalFallDistance: Float = 0
enum BounceState {
case idle
case falling
case justBounced
case bouncing
case settled
}
}
Is this energy loss expected behavior in RealityKit, even with perfect restitution (1.0)?
Are there additional physics parameters (damping, solver iterations, etc.) that could improve bounce behavior?
Would switching to Unity be necessary for more realistic ball physics, or am I missing something in RealityKit?
Even in the last video here: https://stepinto.vision/example-code/collisions-physics-physics-material/ bounce of the ball is very unnatural - stops after 3-4 bounces. I apply custom impulses, but then if I have walls around the ball, it's almost impossible to make it look natural. I also saw this post https://developer.apple.com/forums/thread/759422 and ball is still not bouncing naturally.