I recently added pushWindow to my app, and I discovered that in visionOS 26.2 RC (23N301), pushWindow followed by dismissWindow no longer works as expected.
Specifically, if the user moves the pushed window, then when the pushed window is later dismissed, the parent window's position isn't aligned with the pushed window's new position. Its original position is restored instead.
Curiously, the bug only happens when an app is launched from the visionOS home view, and not when an app is launched from Xcode. It also doesn't happen in the visionOS 26.2 simulator.
Another interesting detail is that while the parent window is hidden, if the user long-presses the Digital Crown and then dismisses the pushed window, the parent window's position seems to be immune from the Digital Crown scene reorientation. It's restored to its original real world position.
Demo video: https://youtu.be/zR3t2ON3Wz0
I've submitted feedback as FB21287011 with a sample app and detailed repro steps.
Has anyone else encountered this issue already and figured out a workaround? It would be nice if I could get pushWindow to work correctly in my app.
Thanks everybody! 😀
General
RSS for tagDiscuss Spatial Computing on Apple Platforms.
Selecting any option will automatically load the page
Post
Replies
Boosts
Views
Activity
Has Roomplan been abandoned? Two years have gone by without comments from Apple on improvements. Are the improvements behind the scenes? Is there going to be any major updates?
I am trying to launch a fully immersive game from Unity on a SwiftUI view. The game is using Metal Rendering with Compositor Services.
I added the unity Xcode project into the workspace, added the necessary bridge code. When I click on the button to call ufw?.showUnityWindow(), it does not start and I get the following in the console:
AR session failed to start after 5 seconds. Is the app configured to use an immersive space?
.glassEffect(.regular, in: .rect(cornerRadius: 24))
error; 'glassEffect(_:in:isEnabled:)' is unavailable in visionOS
This is not surprising since visionOS already has a native glass interface that formed a model for the other OS's, but this error will create additional overhead for developers creating multi-platform apps that include visionOS.
I want to open the control center in Vision Pro’s Xcode simulator. Can I open it? If I can, please tell me how to do it. Thank you.
Hi everyone,
I’m building a visualization app for VisionPro that uses SharePlay and GroupActivities to explore datasets collaboratively.
I’ve successfully implemented the new SharedWorldAnchor feature, and everything works well with nearby, local participants.
However, I’m stuck on one point:
How can I share a world anchor with remote participants who join via FaceTime as spatial personas?
Apple’s demo app (where multiple users move a plane model around) seems to suggest that this is possible.
For context, I’m building an immersive app with Metal rendering.
Any guidance or examples would be greatly appreciated!
Thanks,
Jens
let component = GestureComponent(DragGesture())
iOS: ☑️
visionOS: ❌
This bug from beta to public, please fix it.
The landing page for visionOS 26 mentions
The Unified Coordinate Conversion API makes moving views and entities between scenes straightforward — even between views and ARKit accessory anchors.
This WWDC session very briefly shows a single example of using this, but with no context. For example, they discuss a way to tell the distance between a Model3D and an entity in a RealityView. But they don't provide any details for how they are referencing the entity (bolts in the slide).
The session used the BOT-anist example project that we saw in visionOS 2, but the version on in the Sample Code library has not been updated with these examples.
I was able to put together a simple example where we can get the position of a window relative to the world origin. It even updates when the user recenters.
struct Lab080: View {
@State private var posX: Float = 0
@State private var posY: Float = 0
@State private var posZ: Float = 0
var body: some View {
GeometryReader3D { geometry in
VStack {
Text("Unified Coordinate Conversion")
.font(.largeTitle)
.padding(24)
VStack {
Text("X: \(posX)")
Text("Y: \(posY)")
Text("Z: \(posZ)")
}
.font(.title)
.padding(24)
}
.onGeometryChange3D(for: Point3D.self) { proxy in try! proxy
.coordinateSpace3D()
.convert(value: Point3D.zero, to: .worldReference)
} action: { old, new in
posX = Float(new.x)
posY = Float(new.y)
posZ = Float(new.z)
}
}
}
}
This is all that I've been able to figure out so far. What other features are included in this new Unified Coordinate Conversion?
Can we use this to get the position of one window relative to another? Can we use this to get the position of a view in a window relative to an entity in a RealityView, for example in a Volume or Immersive Space? What else can Unified Coordinate Conversion do?
Are there documentation pages that I'm missing? I'm not sure what to search for. Are there any Sample projects that use these features? Any additional information would be very helpful.
Topic:
Spatial Computing
SubTopic:
General
With Xcode 26, loading ressources with RealityKit is extremely slow.
Here my project takes almost 50 seconds to load.
I also get multiple Hang detected messages in the console:
When I uncheck "Debug executable" in the schema, the same project loads in 2 seconds.
I'm using RealityKit asynchronous loading:
private static func loadFromRealityComposerPro(
named entityName: String,
fromSceneNamed sceneName: String
) async -> Entity? {
var entity: Entity?
do {
let scene = try await Entity(
named: sceneName,
in: visionPetsContentBundle
)
entity = scene.findEntity(named: entityName)
} catch {
print(
"Error loading \(entityName) from scene \(sceneName): \(error.localizedDescription)"
)
}
return entity
}
Anyone having the same problem?
Topic:
Spatial Computing
SubTopic:
General
Hi,
I am in the process of implementing SharePlay into our app. The shared experience opens an Immersive Space and we set systemCoordinator.configuration.supportsGroupImmersiveSpace = true
Now visionOS establishes a shared coordinate space for the immersive space.
From the docs:
To achieve consistent positioning of RealityKit entities across multiple devices in an immersive space during a SharePlay session
There are cases where we want to position content in front of the user (independent of the shared session, and for each user individually). Normally to do that we use the transform retrieved via worldTrackingProvider.queryDeviceAnchor.originFromAnchorTransform
to position content in front of the user (plus some Z Offset and smooth interpolation).
This works fine in non-SharePlay instances and the device transform is where I would expect it to be but during the FaceTime call deviceAnchor.originFromAnchorTransform seems to use the shared origin of the immersive space and then I end up with a transform that might be offset.
Here is a video of the issue in action: https://streamable.com/205r2p
The blue rect is place using AnchorEntity(.head, trackingMode: .continuous). This works regardless of the call and the entity is always placed based on the head position.
The green rect is adjusted on every frame using the transform I get from worldTrackingProvider.queryDeviceAnchor. As you can see it's offset.
Is there any way I can query query this transform locally for the user during a FaceTime call?
Also I would like to know if it's possible to disable this automatic entity transform syncing behavior?
Setting entity.synchronization = nil results in the entity not showing up at all.
https://developer.apple.com/documentation/realitykit/synchronizationcomponent
Is SynchronizationComponent only relevant for the legacy MultiPeerConnectivity approach?
Thank you!
We can add ornaments to popovers shown by PresentationComponent, but I’m not sure if we should.
While working on the editor for entities in a Volume-based app, I had the idea to add ornaments to the presented views. The entire app exists inside a volume. A user can tap a item to present a popoverUI to edit it. This is displayed using the new PresentationComponent in visionOS 26.
Ornaments have a new attachment anchor option this year: .parent().
.ornament(attachmentAnchor: .parent(.top), ornament: {...})
This works well in the Simulator. We can add ornaments around this popover view just like we would with a window.
Unfortunately, when I run this on device I get a different experience. Any part of the ornament that overlaps with the popover content isn’t rendered correctly. Sometimes it entirely disappears, other times it becomes partially transparent.
We could use content alignment to try to make sure the ornament doesn’t overlap the popover content.
.ornament(attachmentAnchor: .parent(.top), contentAlignment: .bottom, ornament: {...})
This works sometimes–but not all the time. It’s not clear if this is a bug or not, because I’m not sure if we are even supposed to be able to use ornaments in this way. Here is my hierarchy:
An app opens as a Volume
Volume presenting a RealityView, with its own ornament using .scene() anchor
Multiple Entities with Presentation Component show an edit view
The view uses .parent() anchor to add ornaments.
What makes me unsure is that other methods for drawing UI in RealityView don’t seem to work with ornaments. For example, if I add an attachment to show a view with the ornament–even when I use the .parent() anchor–the ornament is anchor to the volume, not the attachment view.
So what do we think? Is this a rendering bug? Are ornaments intended to work with attachments and presentations?
This is no longer highlighting my entity when looking at it:
RealityView { content
let hoverComponent = HoverEffectComponent(.spotlight(
HoverEffectComponent.SpotlightHoverEffectStyle(
color: .white, strength: 2.0
)
))
entity.components.set(hoverComponent)
The entity is in a window. The same code works in an immersive view.
Collision Component and Input type are set in RCP.
It's also stopped working on my published app (built under visionOS 2.x) using my visionOS 26 device.
If I use a 2.x simulator, it works.
Is this a bug or is there something I'm missing?
Thanks.
Hello everyone,
I've been trying for a few weeks now to convert a sequential series of meshes into a stop-motion animation in USDZ format.
In Unreal Engine, I’ve already figured out how to transform the sequential series of individual meshes into a smooth animation using the node system and arrays.
Unfortunately, the node system cannot be exported as a usdz animation logic in either Unreal or Blender.
Because of this, I have tried several other methods to incorporate the animation logic. Here’s what I’ve tried so far:
I attempted to create the animation in Blender with Render-/Viewports and mapping it to keyframes. However, in my experience, Viewports are not supported in the conversion.
I tried aligning the vertices of individual objects and merging the frames using the Shrinkwrap modifier in Blender, then setting up a morph animation with keyframes. However, because the individual meshes are too different, this results in artifacts, and manually editing each mesh is too difficult for me to handle.
I placed all individual meshes at the same position and animated them sequentially by scaling them from 0 to 100 in keyframes (Frame 1 is visible for 10 frames, then scales down at frame 11, while Frame 2 becomes visible at frame 11, and so on). I also adjusted the keyframes so that the scaling happens in a "constant" manner rather than the default Bezier or linear interpolation. I then converted this animation to .abc, and the result initially looked good. However, some information is lost when converting it with OpenUSD. The animation does not maintain its intended jump-like behavior in USDZ format, and instead, the scaling of individual files is visible in the animation.
I tried using a Blender add-on (StepMotion), which allows the animation to be exported as .abc, but it can only be read in Blender or Unreal. Even in the preview, the animation is not displayed correctly, so converting the animation logic does not work either.
Unfortunately, I have no alternative way to create the animation, as the individual frames have been provided to me as meshes. So far, I haven’t found a way to implement this successfully.
I would be very grateful for any tips or ideas, as I am running out of options on how to make this work.
Thanks in advance!
Topic:
Spatial Computing
SubTopic:
General
Tags:
Core Animation
Reality Converter
Visual Design
USDZ
Hi, would love for your help in that matter.
I try to get the position in space of two QR codes to make an alignment to their positions in space. The detection shows that the QR codes position is always 0,0,0 and I don't understand why. Here's my code:
import SwiftUI
import RealityKit
import RealityKitContent
struct AnchorView: View {
@ObservedObject var qrCoordinator: QRCoordinator
@ObservedObject var coordinator: ImmersiveCoordinator
let qrName: String
@Binding var startQRDetection: Bool
@State private var anchor: AnchorEntity? = nil
@State private var detectionTask: Task<Void, Never>? = nil
var body: some View {
RealityView { content in
// Add the QR anchor once (must exist before detection starts)
if anchor == nil {
let imageAnchor = AnchorEntity(.image(group: "QRs", name: qrName))
content.add(imageAnchor)
anchor = imageAnchor
print("📌 Created anchor for \(qrName)")
}
}
.onChange(of: startQRDetection) { enabled in
if enabled {
startDetection()
} else {
stopDetection()
}
}
.onDisappear {
stopDetection()
}
}
private func startDetection() {
guard detectionTask == nil, let anchor = anchor else { return }
detectionTask = Task {
var detected = false
while !Task.isCancelled && !detected {
print("🔎 Checking \(qrName)... isAnchored=\(anchor.isAnchored)")
if anchor.isAnchored {
// wait a short moment to let transform update
try? await Task.sleep(nanoseconds: 100_000_000)
let worldPos = anchor.position(relativeTo: nil)
if worldPos != .zero {
// relative to modelRootEntity if available
var posToSave = worldPos
if let modelEntity = coordinator.modelRootEntity {
posToSave = anchor.position(relativeTo: modelEntity)
print("converted to model position")
} else {
print("⚠️ modelRootEntity not available, using world position")
}
print("✅ \(qrName) detected at position: world=\(worldPos) saved=\(posToSave)")
if qrName == "reanchor1" {
qrCoordinator.qr1Position = posToSave
let marker = createMarker(color: [0,1,0])
marker.position = .zero // sits directly on QR
marker.position = SIMD3<Float>(0, 0.02, 0)
anchor.addChild(marker)
print("marker1 added")
} else if qrName == "reanchor2" {
qrCoordinator.qr2Position = posToSave
let marker = createMarker(color: [0,0,1])
marker.position = posToSave // sits directly on QR
marker.position = SIMD3<Float>(0, 0.02, 0)
anchor.addChild(marker)
print("marker2 added")
}
detected = true
} else {
print("⚠️ \(qrName) anchored but still at origin, retrying...")
}
}
try? await Task.sleep(nanoseconds: 500_000_000) // throttle loop
}
print("🛑 QR detection loop ended for \(qrName)")
detectionTask = nil
}
}
private func stopDetection() {
detectionTask?.cancel()
detectionTask = nil
}
private func createMarker(color: SIMD3<Float>) -> ModelEntity {
let sphere = MeshResource.generateSphere(radius: 0.05)
let material = SimpleMaterial(color: UIColor(
red: CGFloat(color.x),
green: CGFloat(color.y),
blue: CGFloat(color.z),
alpha: 1.0
), isMetallic: false)
let marker = ModelEntity(mesh: sphere, materials: [material])
marker.name = "marker"
return marker
}
}
Topic:
Spatial Computing
SubTopic:
General
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!
My app is getting video from UVC device, and I wish to display it in an Immersive Space. But when I open Immersive Space, the UVC capture will just stop.AI said it's due to confliction in Camera pipeline. But I don't really understand, I don't need to use any on device camera, why it conflict with my UVC...
Hi !
I'm new on this forum, so if I need to update this post to have more info, or anything else, please let me know.
I'm using the Apple Vision Pro to develop some app (with unity). To demonstrate what the user see on the headset, I would like to mirror the view on a device (an iPad in this case). I managed to do this without any issue.
My problem is that, in the Vision Pro, I have an interface that the user can interact with. But I would like to be able to manage myself the interface on the iPad. What I mean is that the user can (or can't, doesn't matter) see the interface in the headset, and the interface is controlled by myself on the iPad.
Is there any way to do this ? Is this a question I should ask on unity's forum ? (I don't think so, because it should be related to the mirroring function non ?)
Topic:
Spatial Computing
SubTopic:
General
I am using HelloPhotogrammetry in Xcode
I can make one model with something like HelloPhotogrammetry.main([path_to_folder_of images, path_to_output/model.usdz, "-d", "medium", "-o", "unordered", "-f", "high" ])
But how would I request several models simultaneously? I only want to vary the detail.
[ ("/Users/you/Desktop/model_medium.usdz", detail: .medium), ("/Users/you/Desktop/model_full.usdz", detail: .full), ("/Users/you/Desktop/model_raw.usdz", detail: .raw ]
With the new ImagePresentationComponent in visionOS 26, how can text/overlays be shown on top of the image as seen in the Spatial Gallery app?
Hi,
I'm trying to correct the lens distortion in frames provided by Enterprise API camera frame provider. The frames provided seem to have only in/extrinsics info, but not the distortion lookup table.
Is there some magic setting, or function to do that (I can't seem to find anything like this)? Or is there a way to use AVCameraCalibrationData together with provider?