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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Depth matrix accuracy with the iPhone 14 Pro and Lidar
Hello Community, I’m currently working with the sample code “CapturingDepthUsingTheLiDARCamera” and using it to capture the depth map of an image taken with the iPhone 14 Pro. From this depth map, I generate a point cloud using the intrinsic camera parameters. I've noticed that objects not facing the camera directly appear distorted in the resulting point cloud. For example: An object with surfaces that are perpendicular to each other appears with a sharper angle in the point cloud — around 60° instead of 90°. My question is: Is this due to the general accuracy limitations of the LiDAR sensor? Or could it be related to the sample code? To obtain the depth map, I’m using: AVCapturePhoto.depthData.converting(toDepthDataType: kCVPixelFormatType_DepthFloat32) Thanks in advance for your help!
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136
Apr ’25
Animation handling on Scene change
I work on a game where I use timeline animations in Reality Composer Pro. The game runs in an immersive space, but can be paused where I then move the whole level root entity from the immersive space to another RealityView in a Window Group. When the player continues I do it exactly the other way around to move the level root from the window group back to my immersive space RealityView. And it seems like all animations get automatically stopped and restarted when the scene gets changed. The problem is, it does not resume where it stopped before, it completely starts again from where it stopped and therefore, has for example a wrong y offset as visible in the picture. For example in the picture, the yellow sphere loops the following animation: 0 to 100 100 to -100 -100 to 0 If I now pause the game (and basically switch scenes), the previous animation gets stopped and restarted at position y = 100. So now it loops: 100 to 200 200 to 0 0 to 100 I already tried all kind of setups - like: Setting the animations relative to root, parent, local Using behaviors (on Added to Scene, on Notification) And finally even by accessing the availableAnimations directly and saving the playback controller of the animation There I saw, if I manually trigger the following code before switching the scene, everything works as expected: Button("Reset") { animationPlaybackController.time = 0 animationPlaybackController.pause() animationPlaybackController.stop(blendOutDuration: 0.00001) } But if I use time = 0 with .stop() directly, the time = 0 seems to be ignored and I get the same behavior as before that it stops in a wrong y offset, hence my assumption that animations get stopped and invalidated once they change the scene. I tried to call the code manually on ImmersiveSpace.onDisappear, WindowGroup.onAppear and different kind of SceneEvents subscriptions, but unfortunately nothing worked. So am I doing something wrong in general or is there a way to fix this?
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112
Apr ’25
Is it Possible to Place a 3D Model at the Exact Position of a QR Code in AR with ARKit ?
I'm working on an iOS app using ARKit and RealityKit where I scan QR codes and want to place 3D models at the exact position of the QR code in the real world. Is it possible to accurately place a 3D model at the exact position of a QR code in AR using ARKit and RealityKit? Specifically, I want the model to appear at the precise location where the QR code is detected, rather than just somewhere in the AR space. If this is possible, could you point me in the right direction or recommend the best approach to achieve this? Thank you for your help!
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134
May ’25
How to Move and Rotate WindowGroup with Code in Xcode
当我进入混合空间时,出现一个模型,但模型后面有一个 windowGroup,无法完全查看。如果我想点击进入 mix 空间,我需要使用代码将 windowGroup 移动到另一个位置,而不是手动移动 ![](“https://developer.apple.com/forums/content/attachment/0471ead0-4c74-43a7-9ecc-12e67e81cec6” “title=WechatIMG31.jpg;宽度=915;高度=777”)
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66
Mar ’25
ARKit Eye Tracking Calibration Issues - Word-Level Reading Tracking Feasibility
Hi Apple Developer Community, I'm developing an eye-tracking application using ARKit's ARFaceTrackingConfiguration and ARFaceAnchor.blendShapes for gaze detection using Xcode. I'm experiencing several calibration and accuracy issues and would appreciate insights from the community. Current Implementation Using ARFaceAnchor.blendShapes (.eyeLookUpLeft, .eyeLookDownLeft, .eyeLookInLeft, .eyeLookOutLeft, etc.) Implementing custom sensitivity curves and smoothing algorithms Applying baseline correction and coordinate mapping Using quadratic regression for calibration point mapping Issues I'm Facing 1. Calibration Mismatch Red dot position doesn't align with where I'm actually looking Significant offset between intended gaze point and actual cursor position Calibration seems to drift or become inaccurate over time 2. Extreme Eye Movement Requirements Need to make exaggerated eye movements to reach screen edges/corners Natural eye movements don't translate to proportional cursor movement Difficulty reaching certain screen regions even with calibration 3. Sensitivity and Stability Issues Cursor jitters or jumps around when looking at center Too much sensitivity to micro-movements Inconsistent behavior between calibration and normal operation 4. I also noticed that tracking on calibration screen as well as tracking on reading screen works better as expected when head movement is there, but I do not want much head movement. I want tracking with normal eye movement while reading an Ebook. Primary Question: Word-Level Eye Tracking Feasibility Is word-level eye tracking (tracking gaze as users read through individual words in an ebook) technically feasible with current iPhone/iPad hardware? I understand that Apple's built-in eye tracking is primarily an accessibility feature for UI navigation. However, I'm wondering if the TrueDepth camera and ARKit's eye tracking capabilities are sufficient for: Tracking natural reading patterns (left-to-right, line-by-line progression) Detecting which specific words a user is looking at Maintaining accuracy for sustained reading sessions (15-30 minutes) Working reliably across different users and lighting conditions Questions for the Community Hardware Limitations: Are iPhone/iPad TrueDepth cameras capable of the precision needed for word-level tracking, or is this beyond current hardware capabilities? Calibration Best Practices: What calibration strategies have worked best for accurate gaze mapping? How many calibration points are typically needed? Reading-Specific Challenges: Are there particular challenges when tracking reading behavior vs. general gaze tracking? Alternative Approaches: Are there better approaches than ARKit blend shapes for this use case? Current Setup Devices: iPhone 14 Pro iOS Version: iOS 18.3 ARKit Version: Latest available Any insights, experiences, or technical guidance would be greatly appreciated. I'm particularly interested in hearing from developers who have worked on similar eye tracking applications or have experience with the limitations and capabilities of ARKit's eye tracking features. Thank you for your time and expertise!
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740
Oct ’25
Can't establish spatial connection after visionOS update
After updating to visionOS 26.2 Beta 2 (and Beta 3), I'm unable to establish a spatial connection to Vision Pro. This was working fine before the update. To test, I've created a fresh spatialApp project from the Xcode template with zero modifications, but I'm hitting the same issue - the Vision Pro is discovered but won't connect. Am I forgetting to update the config somewhere? Any ideas what might be causing this and how to fix it? Thanks! Warning: -[NSWindow makeKeyWindow] called on <NSWindow: 0xa1f811900> windowNumber=1b9 which returned NO from -[NSWindow canBecomeKeyWindow]. ((processConfiguration != nil && configuration != nil) || (processConfiguration == nil && configuration == nil)) - /AppleInternal/Library/BuildRoots/4~CBS0ugAIF7BrQZjLe6r0lhPXO4GJmNDTovxYoV0/Library/Caches/com.apple.xbs/Sources/ExtensionKit/ExtensionKit/Source/HostViewController/Internal/EXHostSessionDriver.m:80: `processConfiguration` and `configuration` must be both non-nil or both nil Unable to obtain a task name port right for pid 415: (os/kern) failure (0x5) CCContextDeviceGroup.mm(291):+[CCContextDeviceGroup checkBinaryArchivesForDevice:withBundle:]: Failed to find any binary shader archive
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117
Nov ’25
How to get the transform of the joint in a skeleton when it is Animating
I have an entity that was created using Mixamo, and it has an animation. after the animation completes the mesh of the robot is not where the entity is positioned. I want to do something like when the animation finishes, I set the root entity's transform to the mesh's transform. There are no transformations applied to any of the children of this root of the model, which means that the transformations are applied to the skeleton due the the playing of animations. Is there a way where I can apply the final position of the root of the skeleton to the root entity to make sure to position the entity where the animation has ended just before the next animation plays?
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135
May ’25
多设备协同操作繁琐
直播过程中需同时操作 Vision Pro(拍摄)、Mac(推流)、中控台(画面切换),无统一控制入口,调节 3D 模型、校准画质等操作需在多设备间切换,易出错且效率低。 期望 针对直播场景,提供桌面端专属控制软件,支持一站式管理 Vision Pro 的拍摄参数、3D 模型切换、虚实融合效果等,实现多设备协同操作的可视化、便捷化。
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353
Dec ’25
ARKit with 422 pixel format and Apple Log colorspace
Hi, I’m trying to configure camera feed in ARKit to be in Apple Log color space. I can change Capture Device’s format to one that has Apple Log and I see one frame being in proper log-gray colors but then all AR tracking stops and tracking state hangs at “initializing”. In other combinations I see error “sensor failed to initialize” and session restarts with default format. I suspect that this is because normal AR capture formats are 420f, whereas ones that have Apple Log are 422. Could someone confirm if it’s even possible to run ARKit session with camera feed in a different pixel format? I’m trying it on iphone 15 pro
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216
Sep ’25
RoomPlan - The delegate of ARSession is retaining x ARFrames
Hi, I'm encountering an issue in our app that uses RoomPlan and ARsession for scanning. After prolonged use—especially under heavy load from both the scanning process and other unrelated app operations—the iPhone becomes very hot, and the following warning begins to appear more frequently: "ARSession <0x107559680>: The delegate of ARSession is retaining 11 ARFrames. The camera will stop delivering camera images if the delegate keeps holding on to too many ARFrames. This could be a threading or memory management issue in the delegate and should be fixed." I was able to reproduce this behavior using Apple’s RoomPlanExampleApp, with only one change: I introduced a CPU-intensive workload at the end of the startSession() function: DispatchQueue.global().asyncAfter(deadline: .now() + 5) { for i in 0..<4 { var value = 10_000 DispatchQueue.global().async { while true { value *= 10_000 value /= 10_000 value ^= 10_000 value = 10_000 } } } } I suspect this is some RoomPlan API problem that's why a filed an feedback: 17441091
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275
May ’25
VideoMaterial Black Screen on Vision Pro Device (Works in Simulator)
VideoMaterial Black Screen on Vision Pro Device (Works in Simulator) App Overview App Name: Extn Browser Bundle ID: ai.extn.browser Purpose: A visionOS web browser that plays 360°/180° VR videos in an immersive sphere environment Development Environment & SDK Versions Component Version Xcode 26.2 Swift 6.2 visionOS Deployment Target 26.2 Swift Concurrency MainActor isolation enabled App is released in the TestFlight. Frameworks Used SwiftUI - UI framework RealityKit - 3D rendering, MeshResource, ModelEntity, VideoMaterial AVFoundation - AVPlayer, AVAudioSession WebKit - WKWebView for browser functionality Network - NWListener for local proxy server Sphere Video Mechanism The app creates an immersive 360° video experience using the following approach: // 1. Create sphere mesh (10 meter radius for immersive viewing) let mesh = MeshResource.generateSphere(radius: 10.0) // 2. Create initial transparent material var material = UnlitMaterial() material.color = .init(tint: .clear) // 3. Create entity and invert sphere (negative X scale) let sphere = ModelEntity(mesh: mesh, materials: [material]) sphere.scale = SIMD3<Float>(-1, 1, 1) // Inverts normals for inside-out viewing sphere.position = SIMD3<Float>(0, 1.5, 0) // Eye level // 4. Create AVPlayer with video URL let player = AVPlayer(url: videoURL) // 5. Configure audio session for visionOS let audioSession = AVAudioSession.sharedInstance() try audioSession.setCategory(.playback, mode: .moviePlayback, options: [.mixWithOthers]) try audioSession.setActive(true) // 6. Create VideoMaterial and apply to sphere let videoMaterial = VideoMaterial(avPlayer: player) if var modelComponent = sphere.components[ModelComponent.self] { modelComponent.materials = [videoMaterial] sphere.components.set(modelComponent) } // 7. Start playback player.play() ImmersiveSpace Configuration // browserApp.swift ImmersiveSpace(id: appModel.immersiveSpaceID) { ImmersiveView() .environment(appModel) } .immersionStyle(selection: .constant(.mixed), in: .mixed) Entitlements <!-- browser.entitlements --> <key>com.apple.security.app-sandbox</key> <true/> <key>com.apple.security.network.client</key> <true/> <key>com.apple.security.network.server</key> <true/> Info.plist Network Configuration <key>NSAppTransportSecurity</key> <dict> <key>NSAllowsArbitraryLoads</key> <true/> </dict> The Issue Behavior in Simulator: Video plays correctly on the inverted sphere surface - 360° video is visible and wraps around the user as expected. Behavior on Physical Vision Pro: The sphere displays a black screen. No video content is visible, though the sphere entity itself is present. Important: Not a DRM/Licensing Issue This issue is NOT related to Digital Rights Management (DRM) or FairPlay. I have tested with: Unlicensed raw MP4 video files (no DRM protection) Self-hosted video content with no copy protection Direct MP4 URLs from CDN without any licensing requirements The same black screen behavior occurs with all unprotected video sources, ruling out DRM as the cause. (Plain H.264 MP4, no DRM) Screen Recording: Working in Simulator The following screen recording demonstrates playing a 360° YouTube video in the immersive sphere on the visionOS Simulator: https://cdn.commenda.kr/screen-001.mov This confirms that the VideoMaterial and sphere rendering work correctly in the simulator, but the same setup shows a black screen on the physical Vision Pro device. Observations AVPlayer status reports .readyToPlay - The video appears to load successfully VideoMaterial is created without errors - No exceptions thrown Sphere entity renders - The geometry is visible (black surface) Audio session is configured - No errors during audio session setup Network requests succeed - The video URL is accessible from the device Same result with local/unprotected content - DRM is not a factor Console Logs (Device) The logging shows: Sphere created and added to scene AVPlayer created with correct URL VideoMaterial created and applied Player status transitions to .readyToPlay player.play() called successfully Rate shows 1.0 (playing) Despite all success indicators, the rendered output is black. Questions for Apple Are there known differences in VideoMaterial behavior between the visionOS Simulator and physical Vision Pro hardware? Does VideoMaterial(avPlayer:) require specific video codec/format requirements that differ on device? (The test video is a standard H.264 MP4) Is there a required Metal capability or GPU feature for VideoMaterial that may not be available in certain contexts on device? Does the immersion style (.mixed) affect VideoMaterial rendering on hardware? Are there additional entitlements required for video texture rendering in RealityKit on physical hardware? Attempted Solutions Configured AVAudioSession with .playback category Added delay before player.play() to ensure material is applied Verified sphere scale inversion (-1, 1, 1) Tested multiple video URLs (including raw, unlicensed MP4 files) Confirmed network connectivity on device Ruled out DRM/FairPlay issues by testing unprotected content Environment Details Device: Apple Vision Pro visionOS Version: 26.2 Xcode Version: 26.2 macOS Version: Darwin 25.2.0
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256
Feb ’26
visionOS 2.0 – Persist room‑fixed RealityKit entities on walls across app launches (WorldAnchor?)
I want to let users place 2D/3D “artworks” on detected walls and have them reappear in exactly the same real‑world spot after quitting and relaunching the app (like widgets do, but for my own entities).Environment: Xcode 26, visionOS 2.0, RealityKit + ARKitSession/WorldTrackingProvider Entities are parented to a holder that’s aligned to a wall via plane/mesh raycasts What I’ve tried: Create a WorldAnchor at placement, save UUID + full 4×4 transform On next launch, re-create the WorldAnchor (or set the saved transform) and attach the entity Gate restore on relocalization/mesh updates and disable all raycast/search after restore Issue: After relaunch, placement still resolves relative to current device pose, not the same wall position. Questions: Is there a public API in visionOS 2.0 to persist app‑managed world anchors across sessions (room‑fixed), e.g., AnchorStore or equivalent? If not, what’s the recommended pattern to reliably restore wall‑anchored content? Are persistence features mentioned for widgets/windows available to third‑party RealityKit entities?
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Oct ’25
Can video reflections in immersive space work with VideoMaterial, or is AVPlayerViewController with dockingRegion required?
Hi Apple Developer Forums, I'm developing a visionOS video streaming app that uses a custom immersive cinema experience with RealityKit. I have a question about enabling video reflections in an immersive environment. My Current Implementation I'm using VideoMaterial with AVPlayer to display video on a ModelEntity plane in an immersive space: // Create screen mesh let screenMesh = MeshResource.generatePlane( width: VideoTheater.screenWidth, height: VideoTheater.screenHeight, cornerRadius: 0.0 ) let screenEntity = ModelEntity(mesh: screenMesh) // Apply VideoMaterial with AVPlayer screenEntity.model?.materials = [VideoMaterial(avPlayer: player)] The video renders correctly in the immersive space, but I don't see any video reflections on surrounding surfaces. Apple's Documentation Approach According to the documentation at https://developer.apple.com/documentation/visionos/enabling-vid eo-reflections-in-an-immersive-environment, the recommended approach uses: AVPlayerViewController for video playback dockingRegion modifier to specify where the video should appear The system automatically handles reflections My Question Is using AVPlayerViewController with dockingRegion the only way to get video reflections in an immersive environment? Or is it possible to enable reflections when using VideoMaterial directly with RealityKit's ModelEntity? My app requires a custom immersive cinema experience with: Custom screen positioning and scaling Danmaku (bullet comments) overlay Custom gesture controls HDR/Dolby Vision support Switching to AVPlayerViewController would require significant architectural changes, so I'd prefer to keep my current VideoMaterial approach if reflections can be enabled somehow. If VideoMaterial cannot produce reflections, are there any alternative approaches to achieve diffuse video reflections with a custom RealityKit setup? Environment visionOS 2.x RealityKit AVPlayer with custom resource loader (for DASH streams) Thank you for any guidance!
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1w
Vision Pro stucks on "Retrieving configuration"
Hi, after upgrading to 2.4.1 (from 1.0) my vision stucks on "Retrieving configuration" screen. Apple Store didn't support my case since it has been sold in USA and the product isn't still present in italian market. I don't have dev strap, how can I manage the issue? Thank you
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119
May ’25
Position and orientation of a window in an immersive space
Is it possible to retrieve the position and orientation of a window that is opened in an immersive space? The following code: struct MyWindow: View { var body: some View { VStack { Text("Hello") } .onGeometryChange3D(for: Point3D.self) { proxy in try! proxy .coordinateSpace3D() .convert(value: Point3D.zero, to: .worldReference) } action : { point in print(point) } } } seems to work for the position, but I also need the orientation.
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Depth matrix accuracy with the iPhone 14 Pro and Lidar
Hello Community, I’m currently working with the sample code “CapturingDepthUsingTheLiDARCamera” and using it to capture the depth map of an image taken with the iPhone 14 Pro. From this depth map, I generate a point cloud using the intrinsic camera parameters. I've noticed that objects not facing the camera directly appear distorted in the resulting point cloud. For example: An object with surfaces that are perpendicular to each other appears with a sharper angle in the point cloud — around 60° instead of 90°. My question is: Is this due to the general accuracy limitations of the LiDAR sensor? Or could it be related to the sample code? To obtain the depth map, I’m using: AVCapturePhoto.depthData.converting(toDepthDataType: kCVPixelFormatType_DepthFloat32) Thanks in advance for your help!
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136
Activity
Apr ’25
Animation handling on Scene change
I work on a game where I use timeline animations in Reality Composer Pro. The game runs in an immersive space, but can be paused where I then move the whole level root entity from the immersive space to another RealityView in a Window Group. When the player continues I do it exactly the other way around to move the level root from the window group back to my immersive space RealityView. And it seems like all animations get automatically stopped and restarted when the scene gets changed. The problem is, it does not resume where it stopped before, it completely starts again from where it stopped and therefore, has for example a wrong y offset as visible in the picture. For example in the picture, the yellow sphere loops the following animation: 0 to 100 100 to -100 -100 to 0 If I now pause the game (and basically switch scenes), the previous animation gets stopped and restarted at position y = 100. So now it loops: 100 to 200 200 to 0 0 to 100 I already tried all kind of setups - like: Setting the animations relative to root, parent, local Using behaviors (on Added to Scene, on Notification) And finally even by accessing the availableAnimations directly and saving the playback controller of the animation There I saw, if I manually trigger the following code before switching the scene, everything works as expected: Button("Reset") { animationPlaybackController.time = 0 animationPlaybackController.pause() animationPlaybackController.stop(blendOutDuration: 0.00001) } But if I use time = 0 with .stop() directly, the time = 0 seems to be ignored and I get the same behavior as before that it stops in a wrong y offset, hence my assumption that animations get stopped and invalidated once they change the scene. I tried to call the code manually on ImmersiveSpace.onDisappear, WindowGroup.onAppear and different kind of SceneEvents subscriptions, but unfortunately nothing worked. So am I doing something wrong in general or is there a way to fix this?
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112
Activity
Apr ’25
Can .scrollInputBehavior(.enabled, for: .look) be applied to a WebView?
Can I apply .scrollInputBehavior(.enabled, for: .look) to a WebView (wrapped UIViewRepresentable) in a visionOS 26 app? I tried it myself, but I couldn't do it, so I would like to know if there is any way to do this. Best regards.
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68
Activity
Jun ’25
Mirroring MacBook screen onto app
Hello all, I saw this interesting VisionOS app: https://apps.apple.com/us/app/splitscreen-multi-display/id6478007837 I was wondering if there was any documentation on the Swift APIs that were used to create this app.
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200
Activity
Jun ’25
Is it Possible to Place a 3D Model at the Exact Position of a QR Code in AR with ARKit ?
I'm working on an iOS app using ARKit and RealityKit where I scan QR codes and want to place 3D models at the exact position of the QR code in the real world. Is it possible to accurately place a 3D model at the exact position of a QR code in AR using ARKit and RealityKit? Specifically, I want the model to appear at the precise location where the QR code is detected, rather than just somewhere in the AR space. If this is possible, could you point me in the right direction or recommend the best approach to achieve this? Thank you for your help!
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134
Activity
May ’25
How to Move and Rotate WindowGroup with Code in Xcode
当我进入混合空间时,出现一个模型,但模型后面有一个 windowGroup,无法完全查看。如果我想点击进入 mix 空间,我需要使用代码将 windowGroup 移动到另一个位置,而不是手动移动 ![](“https://developer.apple.com/forums/content/attachment/0471ead0-4c74-43a7-9ecc-12e67e81cec6” “title=WechatIMG31.jpg;宽度=915;高度=777”)
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66
Activity
Mar ’25
ARKit Eye Tracking Calibration Issues - Word-Level Reading Tracking Feasibility
Hi Apple Developer Community, I'm developing an eye-tracking application using ARKit's ARFaceTrackingConfiguration and ARFaceAnchor.blendShapes for gaze detection using Xcode. I'm experiencing several calibration and accuracy issues and would appreciate insights from the community. Current Implementation Using ARFaceAnchor.blendShapes (.eyeLookUpLeft, .eyeLookDownLeft, .eyeLookInLeft, .eyeLookOutLeft, etc.) Implementing custom sensitivity curves and smoothing algorithms Applying baseline correction and coordinate mapping Using quadratic regression for calibration point mapping Issues I'm Facing 1. Calibration Mismatch Red dot position doesn't align with where I'm actually looking Significant offset between intended gaze point and actual cursor position Calibration seems to drift or become inaccurate over time 2. Extreme Eye Movement Requirements Need to make exaggerated eye movements to reach screen edges/corners Natural eye movements don't translate to proportional cursor movement Difficulty reaching certain screen regions even with calibration 3. Sensitivity and Stability Issues Cursor jitters or jumps around when looking at center Too much sensitivity to micro-movements Inconsistent behavior between calibration and normal operation 4. I also noticed that tracking on calibration screen as well as tracking on reading screen works better as expected when head movement is there, but I do not want much head movement. I want tracking with normal eye movement while reading an Ebook. Primary Question: Word-Level Eye Tracking Feasibility Is word-level eye tracking (tracking gaze as users read through individual words in an ebook) technically feasible with current iPhone/iPad hardware? I understand that Apple's built-in eye tracking is primarily an accessibility feature for UI navigation. However, I'm wondering if the TrueDepth camera and ARKit's eye tracking capabilities are sufficient for: Tracking natural reading patterns (left-to-right, line-by-line progression) Detecting which specific words a user is looking at Maintaining accuracy for sustained reading sessions (15-30 minutes) Working reliably across different users and lighting conditions Questions for the Community Hardware Limitations: Are iPhone/iPad TrueDepth cameras capable of the precision needed for word-level tracking, or is this beyond current hardware capabilities? Calibration Best Practices: What calibration strategies have worked best for accurate gaze mapping? How many calibration points are typically needed? Reading-Specific Challenges: Are there particular challenges when tracking reading behavior vs. general gaze tracking? Alternative Approaches: Are there better approaches than ARKit blend shapes for this use case? Current Setup Devices: iPhone 14 Pro iOS Version: iOS 18.3 ARKit Version: Latest available Any insights, experiences, or technical guidance would be greatly appreciated. I'm particularly interested in hearing from developers who have worked on similar eye tracking applications or have experience with the limitations and capabilities of ARKit's eye tracking features. Thank you for your time and expertise!
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740
Activity
Oct ’25
Can't establish spatial connection after visionOS update
After updating to visionOS 26.2 Beta 2 (and Beta 3), I'm unable to establish a spatial connection to Vision Pro. This was working fine before the update. To test, I've created a fresh spatialApp project from the Xcode template with zero modifications, but I'm hitting the same issue - the Vision Pro is discovered but won't connect. Am I forgetting to update the config somewhere? Any ideas what might be causing this and how to fix it? Thanks! Warning: -[NSWindow makeKeyWindow] called on <NSWindow: 0xa1f811900> windowNumber=1b9 which returned NO from -[NSWindow canBecomeKeyWindow]. ((processConfiguration != nil && configuration != nil) || (processConfiguration == nil && configuration == nil)) - /AppleInternal/Library/BuildRoots/4~CBS0ugAIF7BrQZjLe6r0lhPXO4GJmNDTovxYoV0/Library/Caches/com.apple.xbs/Sources/ExtensionKit/ExtensionKit/Source/HostViewController/Internal/EXHostSessionDriver.m:80: `processConfiguration` and `configuration` must be both non-nil or both nil Unable to obtain a task name port right for pid 415: (os/kern) failure (0x5) CCContextDeviceGroup.mm(291):+[CCContextDeviceGroup checkBinaryArchivesForDevice:withBundle:]: Failed to find any binary shader archive
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117
Activity
Nov ’25
How to get the transform of the joint in a skeleton when it is Animating
I have an entity that was created using Mixamo, and it has an animation. after the animation completes the mesh of the robot is not where the entity is positioned. I want to do something like when the animation finishes, I set the root entity's transform to the mesh's transform. There are no transformations applied to any of the children of this root of the model, which means that the transformations are applied to the skeleton due the the playing of animations. Is there a way where I can apply the final position of the root of the skeleton to the root entity to make sure to position the entity where the animation has ended just before the next animation plays?
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135
Activity
May ’25
多设备协同操作繁琐
直播过程中需同时操作 Vision Pro(拍摄)、Mac(推流)、中控台(画面切换),无统一控制入口,调节 3D 模型、校准画质等操作需在多设备间切换,易出错且效率低。 期望 针对直播场景,提供桌面端专属控制软件,支持一站式管理 Vision Pro 的拍摄参数、3D 模型切换、虚实融合效果等,实现多设备协同操作的可视化、便捷化。
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353
Activity
Dec ’25
ARKit with 422 pixel format and Apple Log colorspace
Hi, I’m trying to configure camera feed in ARKit to be in Apple Log color space. I can change Capture Device’s format to one that has Apple Log and I see one frame being in proper log-gray colors but then all AR tracking stops and tracking state hangs at “initializing”. In other combinations I see error “sensor failed to initialize” and session restarts with default format. I suspect that this is because normal AR capture formats are 420f, whereas ones that have Apple Log are 422. Could someone confirm if it’s even possible to run ARKit session with camera feed in a different pixel format? I’m trying it on iphone 15 pro
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216
Activity
Sep ’25
RoomPlan - The delegate of ARSession is retaining x ARFrames
Hi, I'm encountering an issue in our app that uses RoomPlan and ARsession for scanning. After prolonged use—especially under heavy load from both the scanning process and other unrelated app operations—the iPhone becomes very hot, and the following warning begins to appear more frequently: "ARSession <0x107559680>: The delegate of ARSession is retaining 11 ARFrames. The camera will stop delivering camera images if the delegate keeps holding on to too many ARFrames. This could be a threading or memory management issue in the delegate and should be fixed." I was able to reproduce this behavior using Apple’s RoomPlanExampleApp, with only one change: I introduced a CPU-intensive workload at the end of the startSession() function: DispatchQueue.global().asyncAfter(deadline: .now() + 5) { for i in 0..<4 { var value = 10_000 DispatchQueue.global().async { while true { value *= 10_000 value /= 10_000 value ^= 10_000 value = 10_000 } } } } I suspect this is some RoomPlan API problem that's why a filed an feedback: 17441091
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275
Activity
May ’25
VideoMaterial Black Screen on Vision Pro Device (Works in Simulator)
VideoMaterial Black Screen on Vision Pro Device (Works in Simulator) App Overview App Name: Extn Browser Bundle ID: ai.extn.browser Purpose: A visionOS web browser that plays 360°/180° VR videos in an immersive sphere environment Development Environment & SDK Versions Component Version Xcode 26.2 Swift 6.2 visionOS Deployment Target 26.2 Swift Concurrency MainActor isolation enabled App is released in the TestFlight. Frameworks Used SwiftUI - UI framework RealityKit - 3D rendering, MeshResource, ModelEntity, VideoMaterial AVFoundation - AVPlayer, AVAudioSession WebKit - WKWebView for browser functionality Network - NWListener for local proxy server Sphere Video Mechanism The app creates an immersive 360° video experience using the following approach: // 1. Create sphere mesh (10 meter radius for immersive viewing) let mesh = MeshResource.generateSphere(radius: 10.0) // 2. Create initial transparent material var material = UnlitMaterial() material.color = .init(tint: .clear) // 3. Create entity and invert sphere (negative X scale) let sphere = ModelEntity(mesh: mesh, materials: [material]) sphere.scale = SIMD3<Float>(-1, 1, 1) // Inverts normals for inside-out viewing sphere.position = SIMD3<Float>(0, 1.5, 0) // Eye level // 4. Create AVPlayer with video URL let player = AVPlayer(url: videoURL) // 5. Configure audio session for visionOS let audioSession = AVAudioSession.sharedInstance() try audioSession.setCategory(.playback, mode: .moviePlayback, options: [.mixWithOthers]) try audioSession.setActive(true) // 6. Create VideoMaterial and apply to sphere let videoMaterial = VideoMaterial(avPlayer: player) if var modelComponent = sphere.components[ModelComponent.self] { modelComponent.materials = [videoMaterial] sphere.components.set(modelComponent) } // 7. Start playback player.play() ImmersiveSpace Configuration // browserApp.swift ImmersiveSpace(id: appModel.immersiveSpaceID) { ImmersiveView() .environment(appModel) } .immersionStyle(selection: .constant(.mixed), in: .mixed) Entitlements <!-- browser.entitlements --> <key>com.apple.security.app-sandbox</key> <true/> <key>com.apple.security.network.client</key> <true/> <key>com.apple.security.network.server</key> <true/> Info.plist Network Configuration <key>NSAppTransportSecurity</key> <dict> <key>NSAllowsArbitraryLoads</key> <true/> </dict> The Issue Behavior in Simulator: Video plays correctly on the inverted sphere surface - 360° video is visible and wraps around the user as expected. Behavior on Physical Vision Pro: The sphere displays a black screen. No video content is visible, though the sphere entity itself is present. Important: Not a DRM/Licensing Issue This issue is NOT related to Digital Rights Management (DRM) or FairPlay. I have tested with: Unlicensed raw MP4 video files (no DRM protection) Self-hosted video content with no copy protection Direct MP4 URLs from CDN without any licensing requirements The same black screen behavior occurs with all unprotected video sources, ruling out DRM as the cause. (Plain H.264 MP4, no DRM) Screen Recording: Working in Simulator The following screen recording demonstrates playing a 360° YouTube video in the immersive sphere on the visionOS Simulator: https://cdn.commenda.kr/screen-001.mov This confirms that the VideoMaterial and sphere rendering work correctly in the simulator, but the same setup shows a black screen on the physical Vision Pro device. Observations AVPlayer status reports .readyToPlay - The video appears to load successfully VideoMaterial is created without errors - No exceptions thrown Sphere entity renders - The geometry is visible (black surface) Audio session is configured - No errors during audio session setup Network requests succeed - The video URL is accessible from the device Same result with local/unprotected content - DRM is not a factor Console Logs (Device) The logging shows: Sphere created and added to scene AVPlayer created with correct URL VideoMaterial created and applied Player status transitions to .readyToPlay player.play() called successfully Rate shows 1.0 (playing) Despite all success indicators, the rendered output is black. Questions for Apple Are there known differences in VideoMaterial behavior between the visionOS Simulator and physical Vision Pro hardware? Does VideoMaterial(avPlayer:) require specific video codec/format requirements that differ on device? (The test video is a standard H.264 MP4) Is there a required Metal capability or GPU feature for VideoMaterial that may not be available in certain contexts on device? Does the immersion style (.mixed) affect VideoMaterial rendering on hardware? Are there additional entitlements required for video texture rendering in RealityKit on physical hardware? Attempted Solutions Configured AVAudioSession with .playback category Added delay before player.play() to ensure material is applied Verified sphere scale inversion (-1, 1, 1) Tested multiple video URLs (including raw, unlicensed MP4 files) Confirmed network connectivity on device Ruled out DRM/FairPlay issues by testing unprotected content Environment Details Device: Apple Vision Pro visionOS Version: 26.2 Xcode Version: 26.2 macOS Version: Darwin 25.2.0
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256
Activity
Feb ’26
visionOS 2.0 – Persist room‑fixed RealityKit entities on walls across app launches (WorldAnchor?)
I want to let users place 2D/3D “artworks” on detected walls and have them reappear in exactly the same real‑world spot after quitting and relaunching the app (like widgets do, but for my own entities).Environment: Xcode 26, visionOS 2.0, RealityKit + ARKitSession/WorldTrackingProvider Entities are parented to a holder that’s aligned to a wall via plane/mesh raycasts What I’ve tried: Create a WorldAnchor at placement, save UUID + full 4×4 transform On next launch, re-create the WorldAnchor (or set the saved transform) and attach the entity Gate restore on relocalization/mesh updates and disable all raycast/search after restore Issue: After relaunch, placement still resolves relative to current device pose, not the same wall position. Questions: Is there a public API in visionOS 2.0 to persist app‑managed world anchors across sessions (room‑fixed), e.g., AnchorStore or equivalent? If not, what’s the recommended pattern to reliably restore wall‑anchored content? Are persistence features mentioned for widgets/windows available to third‑party RealityKit entities?
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193
Activity
Oct ’25
How to get a usdz to play a blend shape/morphed 3D lipsynced in AR on an iPhone?
How do I convert a blend shape/morphed 3D lip-synced model into a usdz that will play in AR on an iPhone?
Topic: Spatial Computing SubTopic: ARKit Tags:
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84
Activity
Mar ’25
Can video reflections in immersive space work with VideoMaterial, or is AVPlayerViewController with dockingRegion required?
Hi Apple Developer Forums, I'm developing a visionOS video streaming app that uses a custom immersive cinema experience with RealityKit. I have a question about enabling video reflections in an immersive environment. My Current Implementation I'm using VideoMaterial with AVPlayer to display video on a ModelEntity plane in an immersive space: // Create screen mesh let screenMesh = MeshResource.generatePlane( width: VideoTheater.screenWidth, height: VideoTheater.screenHeight, cornerRadius: 0.0 ) let screenEntity = ModelEntity(mesh: screenMesh) // Apply VideoMaterial with AVPlayer screenEntity.model?.materials = [VideoMaterial(avPlayer: player)] The video renders correctly in the immersive space, but I don't see any video reflections on surrounding surfaces. Apple's Documentation Approach According to the documentation at https://developer.apple.com/documentation/visionos/enabling-vid eo-reflections-in-an-immersive-environment, the recommended approach uses: AVPlayerViewController for video playback dockingRegion modifier to specify where the video should appear The system automatically handles reflections My Question Is using AVPlayerViewController with dockingRegion the only way to get video reflections in an immersive environment? Or is it possible to enable reflections when using VideoMaterial directly with RealityKit's ModelEntity? My app requires a custom immersive cinema experience with: Custom screen positioning and scaling Danmaku (bullet comments) overlay Custom gesture controls HDR/Dolby Vision support Switching to AVPlayerViewController would require significant architectural changes, so I'd prefer to keep my current VideoMaterial approach if reflections can be enabled somehow. If VideoMaterial cannot produce reflections, are there any alternative approaches to achieve diffuse video reflections with a custom RealityKit setup? Environment visionOS 2.x RealityKit AVPlayer with custom resource loader (for DASH streams) Thank you for any guidance!
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578
Activity
1w
Vision Pro stucks on "Retrieving configuration"
Hi, after upgrading to 2.4.1 (from 1.0) my vision stucks on "Retrieving configuration" screen. Apple Store didn't support my case since it has been sold in USA and the product isn't still present in italian market. I don't have dev strap, how can I manage the issue? Thank you
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119
Activity
May ’25
Position and orientation of a window in an immersive space
Is it possible to retrieve the position and orientation of a window that is opened in an immersive space? The following code: struct MyWindow: View { var body: some View { VStack { Text("Hello") } .onGeometryChange3D(for: Point3D.self) { proxy in try! proxy .coordinateSpace3D() .convert(value: Point3D.zero, to: .worldReference) } action : { point in print(point) } } } seems to work for the position, but I also need the orientation.
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790
Activity
1w
How can I create 180-degree apple immersive videos using game engine
How can I create 180-degree apple immersive videos using game engine
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278
Activity
Nov ’25
Apple Vision Pro Usecase
Use case proposal: immersive mental visualisation and manifestation experiences on visionOS I'd like to open a discussion around a use case I believe is currently missing from the visionOS ecosystem
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50
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3d