Discuss spatial computing on Apple platforms and how to design and build an entirely new universe of apps and games for Apple Vision Pro.

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ImagePresentationComponent .spatialStereoImmersive mode not rendering in WindowGroup context
Platform: visionOS 2.6 Framework: RealityKit, SwiftUIComponent: ImagePresentationComponent I’m working with the new ImagePresentationComponent from visionOS 26 and hitting a rendering limitation when switching to .spatialStereoImmersive viewing mode within a WindowGroup context. This is what I’m seeing: Pure immersive space: ImagePresentationComponent with .spatialStereoImmersive mode works perfectly in a standalone ImmersiveSpace Mode switching API: All mode transitions work correctly (logs confirm the component updates) Spatial content: .spatialStereo mode renders correctly in both window and immersive contexts. This is where it’s breaking for me: Window context: When the same RealityView + ImagePresentationComponent is placed inside a WindowGroup (even when that window is floating in a mixed immersive space), switching to .spatialStereoImmersive mode shows no visual change The API calls succeed, state updates correctly, but the immersive content doesn’t render. Apple’s Spatial Gallery demonstrates exactly what I’m trying to achieve: Spatial photos displayed in a window with what feels like horizontal scroll view using system window control bar, etc. Tapping a spatial photo smoothly transitions it to immersive mode in-place. The immersive content appears to “grow” from the original window position by just changing IPC viewing modes. This proves the functionality should be possible, but I can’t determine the correct configuration. So, my question to is: Is there a specific RealityView or WindowGroup configuration required to enable immersive content rendering from window contexts that you know of? Are there bounds/clipping settings that need to be configured to allow immersive content to “break out” of window constraints? Does .spatialStereoImmersive require a specific rendering context that’s not available in windowed RealityView instances? How do you think Apple’s SG app achieves this functionality? For a little more context: All viewing modes are available: [.mono, .spatialStereo, .spatialStereoImmersive] The spatial photos are valid and work correctly in pure immersive space Mixed immersive space is active when testing window context No errors or warnings in console beyond the successful mode switching logs I’m getting Any insights into the proper configuration for window-hosted immersive content
1
1
203
Aug ’25
High CPU with ARWorldTrackingConfiguration vs. ARBodyTrackingConfiguration using AREnvironmentTexturing
In a simple test, I'm observing ~30% higher CPU usage with the ARWorldTrackingConfiguration compared to the ARBodyTrackingConfiguration when both configurations have AREnvironmentTexturing enabled. In Instruments, I observe Recon3D consuming ~5.5 seconds of CPU time with the ARWorldTrackingConfiguration vs <0.3 second with the ARBodyTrackingConfiguration in two separate 30 seconds samples. This is on an iPhone 12 Pro equipped with lidar. Is there a reason why two separate configurations, both having the same features enabled would have a different CPU overhead?
0
0
185
Aug ’25
AR sessions fails with "Required sensor failed"
The AR based app I am working on right now is experiencing an issue. Sometimes, the AR session fails with a call to my ARSessionObserver's session(_ session: ARSession, didFailWithError error: Error) with the following error: Error Domain=com.apple.arkit.error Code=102 "Required sensor failed." NSLocalizedFailureReason="A sensor failed to deliver the required input.," NSLocalizedRecoverySuggestion="Make sure that the application has the required privacy settings." The underlying error seems to point to the CoreMotion framework: Domain=CMErrorDomain Code=102 "(null) Some people seem to have experienced this issue and solved it by making sure that the Compass Calibration switch is ON in Settings > Privacy > Location Services > System Services. For context, the ARWorldTrackingConfiguration.worldAlignment is set to .gravity The thing is it is already ON when I experience this issue. I also noticed that this issue happens way more often on the iPhone 16e than in any other device. Has anyone had similar experiences? I am looking for a way to prevent this error from happening (ideally) or handling in a way that does not affect the user. Any help is appreciated
0
1
258
Aug ’25
spatial-backdrop feature available yet?
In WWDC25 session What’s new for the spatial web, the presenter showed creating an immersive environment for a web page by adding to the page's HEAD section <link rel="spatial-backdrop" href="office.usdz" environmentmap="lighting.hdr"> My first attempt failed, and I am trying to track down why. Before I search all the potential failure paths, I wanted to ask the community, Is this feature available in the latest visionOS 26 beta? I haven't seen anyone talk about their use of the feature yet.
2
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277
Aug ’25
TextComponent on iOS/macOS pixelated when viewed from short distance
Hello, I've been tinkering a bit with TextComponent. Based on the docs it seems like this component should always render sharp and nice text, no matter how close the user gets: RealityKit dynamically adjusts the backing size to a value that results in high-fidelity text at its current location. And it does on visionOS, but on iOS and macOS the text gets pixelated when I get close to it, as if its just rendering it once as a plain image texture. Can anyone tell me if this is expected behavior or a bug? Here two screenshots for comparison (iPhone and Vision Pro): Thanks!
2
2
176
Aug ’25
FromToByAnimation triggers availableAnimations not the single bone animation
So, I was trying to animate a single bone using FromToByAnimation, but when I start the animation, the model instead does the full body animation stored in the availableAnimations. If I don't run testAnimation nothing happens. If I run testAnimation I see the same animation as If I had called entity.playAnimation(entity.availableAnimations[0],..) here's the full code I use to animate a single bone: func testAnimation() { guard let jawAnim = jawAnimation(mouthOpen: 0.4) else { print("Failed to create jawAnim") return } guard let creature, let animResource = try? AnimationResource.generate(with: jawAnim) else { return } let controller = creature.playAnimation(animResource, transitionDuration: 0.02, startsPaused: false) print("controller: \(controller)") } func jawAnimation(mouthOpen: Float) -> FromToByAnimation<JointTransforms>? { guard let basePose else { return nil } guard let index = basePose.jointNames.firstIndex(of: jawBoneName) else { print("Target joint \(self.jawBoneName) not found in default pose joint names") return nil } let fromTransforms = basePose.jointTransforms let baseJawTransform = fromTransforms[index] let maxAngle: Float = 40 let angle: Float = maxAngle * mouthOpen * (.pi / 180) let extraRot = simd_quatf(angle: angle, axis: simd_float3(x: 0, y: 0, z: 1)) var toTransforms = basePose.jointTransforms toTransforms[index] = Transform( scale: baseJawTransform.scale * 2, rotation: baseJawTransform.rotation * extraRot, translation: baseJawTransform.translation ) let fromToBy = FromToByAnimation<JointTransforms>( jointNames: basePose.jointNames, name: "jaw-anim", from: fromTransforms, to: toTransforms, duration: 0.1, bindTarget: .jointTransforms, repeatMode: .none, ) return fromToBy } PS: I can confirm that I can set this bone to a specific position if I use guard let index = newPose.jointNames.firstIndex(of: boneName) ... let baseTransform = basePose.jointTransforms[index] newPose.jointTransforms[index] = Transform( scale: baseTransform.scale, rotation: baseTransform.rotation * extraRot, translation: baseTransform.translation ) skeletalComponent.poses.default = newPose creatureMeshEntity.components.set(skeletalComponent) This works for manually setting the bone position, so the jawBoneName and the joint-transformation can't be that wrong.
1
0
321
Aug ’25
Perspective problem
Hi, I called it "perspective problem", but I'm not quite sure what it is. I have a tag that I track with builtin camera. I calculate its pose, then use extrinsics and device anchor to calculate where to place entity with model. When I place an entity that overlaps with physical object and start to look at it from different angles, the virtual object begins to move. Initially I thought that it's something wrong with calculations, or some image distortion closer to camera edges is affecting tag detection. To check, I calculated the position only once and displayed entity there, the physical tracked object is not moving. Now, when I move my head, so the object is more to the left, or right in my field of view, the virtual object becomes misaligned to the left, or right. It feels like a parallax effect, but distance from me to entity and to physical object are exactly the same. Is that expected, because of some passthrough correction magic? And if so, can I somehow correct it back, so the entity always overlaps with object? I'm currently on v26 beta 5. I also don't quite understand the camera extrinsics, because it seems that I need to flip it around X by 180 degrees to make it work in deviceAnchor * extrinsics.inverse * tag (shouldn't it be in same coordinates as all other RealityKit things?).
3
0
268
Aug ’25
How to mix Animation and IKRig in RealityKit
I want an AR character to be able to look at a position while still playing the characters animation. So far, I managed to manually adjust a single bone rotation using skeletalComponent.poses.default = Transform( scale: baseTransform.scale, rotation: lookAtRotation, translation: baseTransform.translation ) which I run at every rendering update, while a full body animation is running. But of course, hardcoding single joints to point into a direction (in my case the head) does not look as nice, as if I were to run some inverse cinematic that includes, hips + neck + head joints. I found some good IKRig code in Composing interactive 3D content with RealityKit and Reality Composer Pro. But when I try to adjust rigs while animations are playing, the animations are usually winning over the IKRig changes to the mesh.
1
0
536
Aug ’25
What's in Reality Composer Pro 26
That title would have made a great WWDC Sessions. Unfortunately, it seems like nothing is new in Reality Composer Pro this year. I've noticed at all versions of the Xcode Beta this summer have shipped with Reality Composer Pro version 2.0. There have been slight bumps in the build number. I haven't found any new features or seen any documentation to indicate that anything has changed. So the question is, what is the state of Reality Composer Pro? Should we continue to use this tool or start doing everything in code? A huge number of Sample Projects use Reality Composer Pro, so it seems like Apple is still using it even if they didn't update it this year.
1
3
520
Aug ’25
[visionOS] How to render side-by-side stereo video?
I want to render a 3d/stereoscopic video in an Apple Vision Pro window using RealityKit/RealityView. The video is a left-right stereo. The straight forward approach would be to spawn a quad, and give it a custom Shader Graph material, which has a CameraIndexSwitch. The CameraIndexSwitch chooses between the right texture vs the left texture. https://i.sstatic.net/XawqjNcg.png The issue I have here is that I have to extract the video frames from my AVSampleBufferVideoRenderer. This should work ok, but not if I'm playing FairPlay content. So, my question is, how to render stereo FairPlay videos in a SwiftUI RealityView?
1
0
735
Aug ’25
Ornaments in Presentations
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?
2
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370
Aug ’25
iOS needs to allow for background bluetooth scanning. I can't fully build my app.
iOS currently restricts background Bluetooth advertising and scanning in order to preserve battery life and protect user privacy. While these restrictions serve important purposes, they also limit legitimate use cases where users have explicitly opted in to proximity-based experiences. The core challenge is that modern social applications need a way to detect when users are physically present at the same location or event without requiring every participant to keep their app in the foreground. Under the current system, background BLE advertising is heavily throttled and can only transmit a limited payload, background scanning intervals are sparse and unpredictable, peer-to-peer proximity detection cannot be maintained reliably when apps are in the background, and Background App Refresh is non-deterministic, making any kind of time-based proximity validation impossible. A proposed enhancement would be to introduce an “Enhanced Proximity Permission.” This would allow developers to enable reliable background BLE advertising and scanning for declared time windows, such as a maximum of eight hours. It would also allow devices running the same app to detect each other’s proximity using ephemeral, rotating identifiers that preserve privacy, with clear user consent and prominent indicators whenever the feature is active. Unlocking this capability would open up new categories of applications. Live events could offer automatic attendance tracking at concerts, conferences, or sports venues. Retail environments could support opt-in foot traffic analysis and dwell-time insights. Social apps could allow users to find friends at festivals, campuses, or other large venues. Safety applications could extend to crowd density monitoring and contact tracing beyond COVID-era needs. Gaming could offer real-world multiplayer experiences based on physical proximity, and transportation providers could verify rideshare pickups or measure public transit flows automatically. Privacy safeguards would remain central. Permissions would be time-boxed and expire after an event or session. A mandatory visual indicator would be displayed whenever proximity tracking is active. A user-facing dashboard would show all apps granted enhanced proximity access. Permissions would automatically be revoked after a period of non-use, and only ephemeral tokens not permanent identifiers would be broadcast. The industry impact would be significant. With this enhancement, iOS could power the next generation of location-aware social platforms while maintaining Apple’s leadership in privacy through explicit user control and transparency. Current alternatives, such as requiring users to keep apps in the foreground or deploying dedicated hardware beacons, produce poor user experiences and constrain innovation in spatial computing and social applications. Can anyone from Apple consider this change? Having to buy iBeacons is brutal and means slower adoption. Please reconsider this for users who opt in.
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1.1k
Sep ’25
ImagePresentationComponent .spatialStereoImmersive mode not rendering in WindowGroup context
Platform: visionOS 2.6 Framework: RealityKit, SwiftUIComponent: ImagePresentationComponent I’m working with the new ImagePresentationComponent from visionOS 26 and hitting a rendering limitation when switching to .spatialStereoImmersive viewing mode within a WindowGroup context. This is what I’m seeing: Pure immersive space: ImagePresentationComponent with .spatialStereoImmersive mode works perfectly in a standalone ImmersiveSpace Mode switching API: All mode transitions work correctly (logs confirm the component updates) Spatial content: .spatialStereo mode renders correctly in both window and immersive contexts. This is where it’s breaking for me: Window context: When the same RealityView + ImagePresentationComponent is placed inside a WindowGroup (even when that window is floating in a mixed immersive space), switching to .spatialStereoImmersive mode shows no visual change The API calls succeed, state updates correctly, but the immersive content doesn’t render. Apple’s Spatial Gallery demonstrates exactly what I’m trying to achieve: Spatial photos displayed in a window with what feels like horizontal scroll view using system window control bar, etc. Tapping a spatial photo smoothly transitions it to immersive mode in-place. The immersive content appears to “grow” from the original window position by just changing IPC viewing modes. This proves the functionality should be possible, but I can’t determine the correct configuration. So, my question to is: Is there a specific RealityView or WindowGroup configuration required to enable immersive content rendering from window contexts that you know of? Are there bounds/clipping settings that need to be configured to allow immersive content to “break out” of window constraints? Does .spatialStereoImmersive require a specific rendering context that’s not available in windowed RealityView instances? How do you think Apple’s SG app achieves this functionality? For a little more context: All viewing modes are available: [.mono, .spatialStereo, .spatialStereoImmersive] The spatial photos are valid and work correctly in pure immersive space Mixed immersive space is active when testing window context No errors or warnings in console beyond the successful mode switching logs I’m getting Any insights into the proper configuration for window-hosted immersive content
Replies
1
Boosts
1
Views
203
Activity
Aug ’25
High CPU with ARWorldTrackingConfiguration vs. ARBodyTrackingConfiguration using AREnvironmentTexturing
In a simple test, I'm observing ~30% higher CPU usage with the ARWorldTrackingConfiguration compared to the ARBodyTrackingConfiguration when both configurations have AREnvironmentTexturing enabled. In Instruments, I observe Recon3D consuming ~5.5 seconds of CPU time with the ARWorldTrackingConfiguration vs <0.3 second with the ARBodyTrackingConfiguration in two separate 30 seconds samples. This is on an iPhone 12 Pro equipped with lidar. Is there a reason why two separate configurations, both having the same features enabled would have a different CPU overhead?
Replies
0
Boosts
0
Views
185
Activity
Aug ’25
AR sessions fails with "Required sensor failed"
The AR based app I am working on right now is experiencing an issue. Sometimes, the AR session fails with a call to my ARSessionObserver's session(_ session: ARSession, didFailWithError error: Error) with the following error: Error Domain=com.apple.arkit.error Code=102 "Required sensor failed." NSLocalizedFailureReason="A sensor failed to deliver the required input.," NSLocalizedRecoverySuggestion="Make sure that the application has the required privacy settings." The underlying error seems to point to the CoreMotion framework: Domain=CMErrorDomain Code=102 "(null) Some people seem to have experienced this issue and solved it by making sure that the Compass Calibration switch is ON in Settings > Privacy > Location Services > System Services. For context, the ARWorldTrackingConfiguration.worldAlignment is set to .gravity The thing is it is already ON when I experience this issue. I also noticed that this issue happens way more often on the iPhone 16e than in any other device. Has anyone had similar experiences? I am looking for a way to prevent this error from happening (ideally) or handling in a way that does not affect the user. Any help is appreciated
Replies
0
Boosts
1
Views
258
Activity
Aug ’25
spatial-backdrop feature available yet?
In WWDC25 session What’s new for the spatial web, the presenter showed creating an immersive environment for a web page by adding to the page's HEAD section <link rel="spatial-backdrop" href="office.usdz" environmentmap="lighting.hdr"> My first attempt failed, and I am trying to track down why. Before I search all the potential failure paths, I wanted to ask the community, Is this feature available in the latest visionOS 26 beta? I haven't seen anyone talk about their use of the feature yet.
Replies
2
Boosts
0
Views
277
Activity
Aug ’25
TextComponent on iOS/macOS pixelated when viewed from short distance
Hello, I've been tinkering a bit with TextComponent. Based on the docs it seems like this component should always render sharp and nice text, no matter how close the user gets: RealityKit dynamically adjusts the backing size to a value that results in high-fidelity text at its current location. And it does on visionOS, but on iOS and macOS the text gets pixelated when I get close to it, as if its just rendering it once as a plain image texture. Can anyone tell me if this is expected behavior or a bug? Here two screenshots for comparison (iPhone and Vision Pro): Thanks!
Replies
2
Boosts
2
Views
176
Activity
Aug ’25
Can't build old project on Xcode 26 beta5
I have a visionOS 2 project created on Xcode 16, when I updated to Xcode 26 beta5, I can't build it any more, every time it stuck in process like the picture shows below: Already tried many methods to fix this issue, such as clear build folders, but don't work. MacBook Air M2 / MacOS 26 beta5 / Xcode 26 beta5
Replies
1
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0
Views
225
Activity
Aug ’25
RealityView content.add Called Twice Automatically
I’m working with RealityView in visionOS and noticed that the content closure seems to run twice, causing content.add to be called twice automatically. This results in duplicate entities being added to the scene unless I manually check for duplicates. How can I fix that? Thanks.
Replies
4
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0
Views
247
Activity
Aug ’25
Can't observe Entity's orientation properties in Slider
On Xcode 26 and visionOS 26, apple provides observable property for Entity, so we can easily interact with Entity between RealityScene and SwiftUI, but there is a issue: It's fine to observe Entity's position and scale properties in Slider, but can't observe orientation properties in Slider. MacBook Air M2 / Xcode 26 beta6
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1
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0
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218
Activity
Aug ’25
FromToByAnimation triggers availableAnimations not the single bone animation
So, I was trying to animate a single bone using FromToByAnimation, but when I start the animation, the model instead does the full body animation stored in the availableAnimations. If I don't run testAnimation nothing happens. If I run testAnimation I see the same animation as If I had called entity.playAnimation(entity.availableAnimations[0],..) here's the full code I use to animate a single bone: func testAnimation() { guard let jawAnim = jawAnimation(mouthOpen: 0.4) else { print("Failed to create jawAnim") return } guard let creature, let animResource = try? AnimationResource.generate(with: jawAnim) else { return } let controller = creature.playAnimation(animResource, transitionDuration: 0.02, startsPaused: false) print("controller: \(controller)") } func jawAnimation(mouthOpen: Float) -> FromToByAnimation<JointTransforms>? { guard let basePose else { return nil } guard let index = basePose.jointNames.firstIndex(of: jawBoneName) else { print("Target joint \(self.jawBoneName) not found in default pose joint names") return nil } let fromTransforms = basePose.jointTransforms let baseJawTransform = fromTransforms[index] let maxAngle: Float = 40 let angle: Float = maxAngle * mouthOpen * (.pi / 180) let extraRot = simd_quatf(angle: angle, axis: simd_float3(x: 0, y: 0, z: 1)) var toTransforms = basePose.jointTransforms toTransforms[index] = Transform( scale: baseJawTransform.scale * 2, rotation: baseJawTransform.rotation * extraRot, translation: baseJawTransform.translation ) let fromToBy = FromToByAnimation<JointTransforms>( jointNames: basePose.jointNames, name: "jaw-anim", from: fromTransforms, to: toTransforms, duration: 0.1, bindTarget: .jointTransforms, repeatMode: .none, ) return fromToBy } PS: I can confirm that I can set this bone to a specific position if I use guard let index = newPose.jointNames.firstIndex(of: boneName) ... let baseTransform = basePose.jointTransforms[index] newPose.jointTransforms[index] = Transform( scale: baseTransform.scale, rotation: baseTransform.rotation * extraRot, translation: baseTransform.translation ) skeletalComponent.poses.default = newPose creatureMeshEntity.components.set(skeletalComponent) This works for manually setting the bone position, so the jawBoneName and the joint-transformation can't be that wrong.
Replies
1
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0
Views
321
Activity
Aug ’25
Perspective problem
Hi, I called it "perspective problem", but I'm not quite sure what it is. I have a tag that I track with builtin camera. I calculate its pose, then use extrinsics and device anchor to calculate where to place entity with model. When I place an entity that overlaps with physical object and start to look at it from different angles, the virtual object begins to move. Initially I thought that it's something wrong with calculations, or some image distortion closer to camera edges is affecting tag detection. To check, I calculated the position only once and displayed entity there, the physical tracked object is not moving. Now, when I move my head, so the object is more to the left, or right in my field of view, the virtual object becomes misaligned to the left, or right. It feels like a parallax effect, but distance from me to entity and to physical object are exactly the same. Is that expected, because of some passthrough correction magic? And if so, can I somehow correct it back, so the entity always overlaps with object? I'm currently on v26 beta 5. I also don't quite understand the camera extrinsics, because it seems that I need to flip it around X by 180 degrees to make it work in deviceAnchor * extrinsics.inverse * tag (shouldn't it be in same coordinates as all other RealityKit things?).
Replies
3
Boosts
0
Views
268
Activity
Aug ’25
How to mix Animation and IKRig in RealityKit
I want an AR character to be able to look at a position while still playing the characters animation. So far, I managed to manually adjust a single bone rotation using skeletalComponent.poses.default = Transform( scale: baseTransform.scale, rotation: lookAtRotation, translation: baseTransform.translation ) which I run at every rendering update, while a full body animation is running. But of course, hardcoding single joints to point into a direction (in my case the head) does not look as nice, as if I were to run some inverse cinematic that includes, hips + neck + head joints. I found some good IKRig code in Composing interactive 3D content with RealityKit and Reality Composer Pro. But when I try to adjust rigs while animations are playing, the animations are usually winning over the IKRig changes to the mesh.
Replies
1
Boosts
0
Views
536
Activity
Aug ’25
How to give spatial photo a custom corner radius?
Spatial photo in RealityView has a default corner radius. I made a parallel effect with spatial photos in ScrollView(like Spatial Gallery), but the corner radius disappeared on left and right spatial photos. I've tried .clipShape and .mask modifiers, but they did't work. How to clip or mask spatial photo with corner radius effect?
Replies
0
Boosts
1
Views
482
Activity
Aug ’25
What's in Reality Composer Pro 26
That title would have made a great WWDC Sessions. Unfortunately, it seems like nothing is new in Reality Composer Pro this year. I've noticed at all versions of the Xcode Beta this summer have shipped with Reality Composer Pro version 2.0. There have been slight bumps in the build number. I haven't found any new features or seen any documentation to indicate that anything has changed. So the question is, what is the state of Reality Composer Pro? Should we continue to use this tool or start doing everything in code? A huge number of Sample Projects use Reality Composer Pro, so it seems like Apple is still using it even if they didn't update it this year.
Replies
1
Boosts
3
Views
520
Activity
Aug ’25
[visionOS] How to render side-by-side stereo video?
I want to render a 3d/stereoscopic video in an Apple Vision Pro window using RealityKit/RealityView. The video is a left-right stereo. The straight forward approach would be to spawn a quad, and give it a custom Shader Graph material, which has a CameraIndexSwitch. The CameraIndexSwitch chooses between the right texture vs the left texture. https://i.sstatic.net/XawqjNcg.png The issue I have here is that I have to extract the video frames from my AVSampleBufferVideoRenderer. This should work ok, but not if I'm playing FairPlay content. So, my question is, how to render stereo FairPlay videos in a SwiftUI RealityView?
Replies
1
Boosts
0
Views
735
Activity
Aug ’25
How to open control center in Vision Pro’s Xcode simulator
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.
Replies
2
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0
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436
Activity
Aug ’25
What is the environment in the Vision Pro simulator sidebar?
If I long press on an element, the sidebar disappears and then a Done appears on the screen, but nothing else changes, so what are the Environments in Vision Pro's Simulator?
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2
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107
Activity
Aug ’25
Does RealityKit support mesh based animation?
I have a mesh based animation 3D model, that means every frame it’s a new mesh. I import it into RealityView, but can’t play it‘s animation, RealityKit tells me this model has no animations by using print(entity.availableAnimations).
Replies
1
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0
Views
675
Activity
Aug ’25
Ornaments in Presentations
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?
Replies
2
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0
Views
370
Activity
Aug ’25
iOS needs to allow for background bluetooth scanning. I can't fully build my app.
iOS currently restricts background Bluetooth advertising and scanning in order to preserve battery life and protect user privacy. While these restrictions serve important purposes, they also limit legitimate use cases where users have explicitly opted in to proximity-based experiences. The core challenge is that modern social applications need a way to detect when users are physically present at the same location or event without requiring every participant to keep their app in the foreground. Under the current system, background BLE advertising is heavily throttled and can only transmit a limited payload, background scanning intervals are sparse and unpredictable, peer-to-peer proximity detection cannot be maintained reliably when apps are in the background, and Background App Refresh is non-deterministic, making any kind of time-based proximity validation impossible. A proposed enhancement would be to introduce an “Enhanced Proximity Permission.” This would allow developers to enable reliable background BLE advertising and scanning for declared time windows, such as a maximum of eight hours. It would also allow devices running the same app to detect each other’s proximity using ephemeral, rotating identifiers that preserve privacy, with clear user consent and prominent indicators whenever the feature is active. Unlocking this capability would open up new categories of applications. Live events could offer automatic attendance tracking at concerts, conferences, or sports venues. Retail environments could support opt-in foot traffic analysis and dwell-time insights. Social apps could allow users to find friends at festivals, campuses, or other large venues. Safety applications could extend to crowd density monitoring and contact tracing beyond COVID-era needs. Gaming could offer real-world multiplayer experiences based on physical proximity, and transportation providers could verify rideshare pickups or measure public transit flows automatically. Privacy safeguards would remain central. Permissions would be time-boxed and expire after an event or session. A mandatory visual indicator would be displayed whenever proximity tracking is active. A user-facing dashboard would show all apps granted enhanced proximity access. Permissions would automatically be revoked after a period of non-use, and only ephemeral tokens not permanent identifiers would be broadcast. The industry impact would be significant. With this enhancement, iOS could power the next generation of location-aware social platforms while maintaining Apple’s leadership in privacy through explicit user control and transparency. Current alternatives, such as requiring users to keep apps in the foreground or deploying dedicated hardware beacons, produce poor user experiences and constrain innovation in spatial computing and social applications. Can anyone from Apple consider this change? Having to buy iBeacons is brutal and means slower adoption. Please reconsider this for users who opt in.
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Activity
Sep ’25
How to break the progress of Entity.animate()
Entity.animate() makes entity animation much easier, but in many cases, I want to break the progress because of some gestures, I couldn't find any way to do this, including tried entity.stopAllAnimations(), I have to wait till Entity.animate() completes. iOS 26 / visionOS 26
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367
Activity
Sep ’25