At a recent community meeting we were wondering how Apple creates this soft-edge effect around the occlusion cutouts. We see this effect on keyboard cutouts, iPhone cutouts, and in progressive spaces.
An example: Notice the soft edged around the occlusion cutout for the keyboard
One of our members created some Shader Graph materials to explore soft edges. These work by sending data into the opacity channel of the PreviewSurface node.
Unfortunately, the Occlusion Surface nodes lack any sort of input. If you know how to blend these concepts with RealityKit Occlusion, please let us know!
General
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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?
I've been experimenting with the Muse pen and understand that it can be accessed by my app through a SpatialTrackingSession, but is there any current or planned support for devices like this as for general UI input like game controllers are? For example, using the button as a tap analogue for SwiftUI views.
Topic:
Spatial Computing
SubTopic:
General
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?
When assigning a ManipulationComponent to an Entity SceneEvents.WillRemoveEntity will be called for that Entity.
Expected Behavior: the Entity is not (even if temporarily) removed from the Scene and no SceneEvents will be triggered as a result of assigning a ManipulationComponent.
FB20872220
Hi, I'm currently implementing 180° / 360° property for immersive video in my app.
I was able to implement 360° easily by just giving VideoMaterial to flipped sphere.
However, I'm bit stuck at 180°. I want to implement by setting VideoMaterial to hemisphere mesh. But since RealityKit doesn't provide default function such like MeshResource.generateHemisphere yet, I just want to apply VideoMaterial half front visible, and half back transparent. I thought this would make my sphere looks like hemisphere.
But I can't find my way to implement this method.. I would appreciate any advice / idea / information that might help.
I'm trying to develop an app that broadcasts what the user sees (priorly we were using main camera access) but now we'd like to investigate and try with this option.
I have set up the BroadcastExtension, I've added the picker, I click on my button, I can see my broadcast extension in the options list in the control center, once I click start, it stops after 1 second more or less.
I'm not able to get anything in the console from my Sample Handler (prints or logs or anything).
I can see however in the console.app some misleading information (one after the other):
[INFO] -[RPRecordingManager getSystemBroadcastExtensionInfo:]_block_invoke:1333 Extension has passthrough license
[INFO] -[RPRecordingManager getSystemBroadcastExtensionInfo:]_block_invoke:1336 Extension does not have passthrough license
We have the entreprise license, the capability and I did add the capability on the extension target as well.
I want to display a huge image in RealityView in 3d space on Vision Pro. of course instead of one giant file I'm using a lot of big images.
to achieve this, I'm generating multiple planes exactly beside each others and put each image on them. although the planes are exactly beside each others but there is still a white gap between them.(image below)
**Does anybody know how to fix this issue? **
Topic:
Spatial Computing
SubTopic:
General
Tags:
RealityKit
Reality Composer Pro
Shader Graph Editor
visionOS
Hi guys,
In visionOS, when using a ZStack decorated with .glassBackgroundEffect(), you can see the 3D glass background from the front, but when viewed from the side, the view appears to have no thickness.
However, I noticed that in an app built by Apple, when viewing a glass background view from the side, it appears to have thickness.
I tried adding .frame(depth:) to a glass background view, but it appears as two separate layers spaced by the depth value.
My question is:
Is there a view modifier that adds visual thickness to a glass background view, as shown in the picture?
Or, if not, how should I write a custom view modifier to achieve this effect? Thanks!
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。
Can we constrain or clamp translation with the new ManipulationComponent? For example, allow free movement within certain bounds.
Hi. I am mixing content destined for Vision Pro. Locked to video. I have the AAX installer and the ASAF video player demonstrated in the quicktimes is nit included in the install package for pro tools. Would it be possible to post a link ?
Summary
After updating to visionOS 26, we’ve encountered severe transparency rendering issues in RealityKit that did not exist in visionOS 2.6 and earlier.
These regressions affect applications that dynamically control scene opacity (via OpacityComponent).
Our app renders ultra-realistic apartment environments in real time, where users can walk or teleport inside 3D spaces. When the user moves above a speed threshold, we apply a global transparency effect to prevent physical collisions with real-world objects.
Everything worked perfectly in visionOS 2.6 — the problems appeared only after upgrading to 26.
Scene Setup Overview
The environment consists of multiple USDZ models (e.g., architecture, rooms, furniture).
We manage LODs manually for performance (e.g., walls and floors always visible in full-res, while rooms swap between low/high-res versions based on user position and field of view).
Transparency is achieved using OpacityComponent, applied dynamically when the user moves.
Some meshes (e.g., portals to skyboxes, glass windows) use alpha materials
We also use OcclusionMaterials to prevent things to be seen through walls when scene is transparent
Observed Behavior by Scenario
(I can share a video showing the results of each scenario if needed.)
Scenario 1 — Severe Flickering (Root Opacity)
Setup:
OpacityComponent applied to the root entity
NO ModelSortGroupComponent used
Symptoms:
Strong flickering when transparency is active
Triangles within the same mesh render at inconsistent opacity levels
Appears as if per-triangle alpha sorting is broken
Workaround:
Moving the OpacityComponent from the root to each individual USDZ entity removes the per-triangle flicker
Pros:
No conflicts with portals or alpha materials
Scenario 2 — Partially Stable, But Alpha Conflicts
Setup:
OpacityComponent applied per USDZ entity
ModelSortGroupComponent(planarUIAlwaysBehind) applied to portal meshes
Other entities have NO ModelSortGroupComponent
Symptoms:
Frequent alpha blending conflicts:
Transparent surfaces behind other transparent surfaces flicker or disappear
Example: Wine glasses behind glass doors — sometimes neither is rendered, or only one
Even opaque meshes behind glass flicker due to depth buffer confusion
Alpha materials sometimes render portals or the real world behind them, ignoring other geometry entirely
Analysis:
Appears related to internal changes in alpha sorting or depth pre-pass behavior introduced in visionOS 26
Pros:
Most stable setup so far
Cons:
Still unreliable when OpacityComponent is active
Scenario 3 — Layer Separation Attempt (Regression)
Setup:
Same as Scenario 2, but:
Entities with alpha materials moved to separate USDZs
Explicit ModelSortGroupComponent order set (alpha surfaces rendered last)
Symptoms:
Transparent surfaces behind other transparent surfaces flicker or disappear
Depth is completely broken when there's a large transparent surface
Alpha materials sometimes render portals or the real world behind them, ignoring other geometry entirely
Workaround Attempt:
Re-ordering and further separating models did not solve it
Pros:
None — this setup makes transparency unusable
Conclusion
There appears to be a regression in RealityKit’s handling of transparency and sorting in visionOS 26, particularly when:
OpacityComponent is applied dynamically, and
Scenes rely on multiple overlapping transparent materials.
These issues did not exist prior to 26, and the same project (no code changes) behaves correctly on previous versions.
Request
We’d appreciate any insight or confirmation from Apple engineers regarding:
Whether alpha sorting or opacity blending behavior changed in visionOS 26
If there are new recommended practices for combining OpacityComponent with transparent materials
If a bug report already exists for this regression
Thanks in advance!
I am running a Spatial Rendering App template demo, it shows “No People Found ” “There is no one nearby to share with”.
How can I stream videos rendered by Mac to my vision pro
I am using macOS 26.0, visionOS 26, Xcode 26
Topic:
Spatial Computing
SubTopic:
General
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.
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
Topic:
Spatial Computing
SubTopic:
General
I noticed that when I drag the menu window in an Immersive View, the entities behind it becomes semi-transparent, and the boundary between virtual and real-world objects is very pronounced.
May I ask how does VisionOS implement this effect? Is there any API or technique I can use in my own code to enable the same semi-transparent overlay - even when I am not dragging the menu window?
I created a new Spatial Rendering App from the template in Xcode 26.0.1. When I run the app, click 'Show Immersive Space' and select my Vision Pro from the pop-up dialog, the content in the dialog flickers (which seems to indicate something crashed) and nothing appears on my Vision Pro.
I'm running the released macOS 26.0 (25A354) and visionOS 26.0 (23M336). Filed as FB20397093.
Environment
Xcode: 16.2
VisionOS SDK 2.4
Swift 6.1
Targets: Apple Vision Pro (immersive space)
Frameworks: ARKit, RealityKit, SwiftUI
What I’m Trying to Do
I have a view-model class PlacementManager that holds two AR providers:
private var worldTracking: WorldTrackingProvider
private var planeDetection: PlaneDetectionProvider
I want to dynamically replace these providers in a setEnvironment(_:) method (so I can save/clear a JSON scene and restart ARKit).
What’s Happening
If I declare them as :
private let worldTracking = WorldTrackingProvider()
private let planeDetection = PlaneDetectionProvider()
I get compile-errors when I later do:
self.worldTracking = newWorldTracking // Cannot assign to property: 'worldTracking' is a 'let' constant
If I change them to un-initialized vars:
private var worldTracking: WorldTrackingProvider
private var planeDetection: PlaneDetectionProvider
then in my init() I get:
self used in property access 'worldTracking' before all stored properties are initialized
Code snipet
@Observable
final class PlacementManager : ObservableObject {
private var worldTracking: WorldTrackingProvider
private var planeDetection: PlaneDetectionProvider
// … other props …
@MainActor
init() {
// error: self.worldTracking used before init…
planeAnchorHandler = PlaneAnchorHandler(rootEntity: root)
persistenceManager = PersistenceManager(
worldTracking: worldTracking,
rootEntity: root
)
// …
}
@MainActor
func setEnvironment(env: Environnement) async {
let newWorldTracking = WorldTrackingProvider()
let newPlaneDetection = PlaneDetectionProvider()
try await appState!.arkitSession.run(
[ newWorldTracking, newPlaneDetection ]
)
self.worldTracking = newWorldTracking
self.planeDetection = newPlaneDetection
// …
}
}
What I’ve Tried
Giving them default values at declaration (= WorldTrackingProvider())
Initializing them at the top of init() before any use
Passing the new providers into arkitSession.run(...)
My Question
What is the recommended Swift-style pattern to declare and reassign these ARKit provider properties so that:
They’re fully initialized before use in init(), and
I can swap them out later in setEnvironment(...) without compiler errors?
Any pointers (or links to forum threads / docs) would be greatly appreciated!
I've encountered an unexpected crash with RoomPlan on iOS 16 devices. The odd part is the code is protected by an available check, since I'm using newer RoomPlan features.
Xcode error
dyld[40588]: Symbol not found: _$s8RoomPlan08CapturedA0V16USDExportOptionsV5modelAEvgZ
I can repro using the Apple sample code.
https://developer.apple.com/documentation/roomplan/create-a-3d-model-of-an-interior-room-by-guiding-the-user-through-an-ar-experience
Modify RoomCaptureViewController.swift as follows.
Remove
try finalResults?.export(to: destinationURL, exportOptions: .parametric)
Add
if #available(iOS 17.0, *) {
try finalResults?.export(to: destinationURL, exportOptions: .model)
} else {
try finalResults?.export(to: destinationURL, exportOptions: .parametric)
}
I would have expected this code to at least compile and run on older devices.
When the app was targeting iOS 15, the available checks worked as expected and the app is able to launch properly.