I'm trying to create a hexagonal triplanar material in Reality Composer Pro 3 using Shader Graph. Could you provide guidance, or an example node setup, for creating a seamless hex-tile texture using triplanar projection? My goal is to apply a hex pattern to 3D objects without visible seams or texture stretching. Are there any sample projects, Shader Graph examples, or recommended workflows for achieving this in Reality Composer Pro? Thanks

Is it possible to utilize exr light maps rendered externally, for example in Blender, in Reality Composer Pro 3? I am thinking there might be a light map node in the material graph editor, that uses the same mixing modes as internally generated light maps, allowing workflows where light maps are rendered externally.

是对原本VisionPro每个App的内存限制做了扩展嘛？放宽了内存限制么？

In courses like Compose interactive 3D content in Reality Composer Pro Realitykit Engineers recommended working with Reality Composer Pro to create RealityKit packages to embed in our Realitykit Xcode projects. And, comparing the workflow to Unity/Unreal, I can see the reasoning since it is nice to prepare scenes/materials/assets visually. Now when we also want to run a Xcode Cloud CI/CD pipeline this seems to come into conflict: When adding a basic *.usdz to the RealityKitContent.rkassets folder, every build we run on Xcode cloud fails with: Compile Reality Asset RealityKitContent.rkassets ❌realitytool requires Metal for this operation and it is not available in this build environment I have also found this related forum post here but it was specifically about compiling a *.skybox.

randomly, the app does not work after small changes in Reality Composer. Small changes like scaling a object a tiny bit. to fix the error, i have to change another element in reality composer and hope for the best. if this does not help, i change (transform) something else, or deactive/activate something to get the project working again. I can't see a pattern why the Reality Composer Project sometimes gets in a state where it does not compile anymore.

the timeline editor feels often unfinished. Setting the time cursor to a different time is often not reflected in the preview. You either have to click a clip or wait. sometimes the cursor even disappears, eg. when switching tabs to shadergraph Not being able to select and move multiple clips is missing. There is also no snapping to clips or time cursor as found in other tools. And then there is the timeline compile bug https://developer.apple.com/forums/thread/810868 The timeline as it is, is a good start but it definitely needs some more love to be on par with other commercial tools like Unity or After Effects.

On visionOS the user's viewpoint isn't directly movable, so we currently invert world movement to simulate locomotion — translating the scene root rather than the camera. With RCP 3 / RealityKit this year, is there a supported way to define or animate a starting viewpoint — a "player start" transform — for an immersive scene, or is world-relative transform still the only sanctioned approach?

I’m familiar with using ModelSortGroupComponent to control draw order, but how does RealityKit determine the draw order between model sort groups? How can I enforce a specific draw order between two model sort groups that require different depth pass modes and therefore can't be combined into a single model sort group? Are there model bounding box tricks I can safely rely on?

RCP 3's Animation Graph covers state machines and blending of imported clips. As an animator, is there now any in-editor support for authoring or editing animation curves and keyframes directly — a graph editor or dope sheet — or must all keyframe animation still be authored in a DCC (Maya/Blender) and imported as clips?

Dear Apple Developer Team, I would like to ask a few questions related to RoomPlan, Room API, USDZ export, and possible future spatial scanning workflows: Can the RoomPlan or Room API load an existing USDZ room model and compare it in real time with a new live scan of the same space? Is Apple considering extending RoomPlan beyond indoor rooms, for example to scan outdoor areas, house exteriors, terrain, and simple building volumes with rough dimensions? Will RoomPlan support multi-floor continuous scanning, custom object detection elements, and reliable export of the scanned result to USDZ for further CAD/BIM workflows? Is it possible to create a real-time comparator between a reference object in USDZ or STEP format and a physical object being scanned live, so that deviations in geometry or dimensions can be detected during scanning? Best regards, Ivo Saina

Am I correct to understand that visionOS 27 brings the Vision API to the headset? What are the privacy restrictions on its use?

I have a question about material authoring improvements in Reality Composer Pro 3, especially for transparent or refractive PBR materials. In Reality Composer Pro 2, I found it difficult to create convincing glass-like materials. For example, the available Shader Graph nodes seemed limited for this use case, and I could not find common controls or nodes that are often useful for glass and crystal materials, such as Fresnel-style effects or more direct refraction-related controls. I would like to understand whether Reality Composer Pro 3 has improved this area. Specifically: Does Reality Composer Pro 3 provide better support for realistic glass, crystal, acrylic, or transparent PBR materials? Are there new Shader Graph nodes or material controls that help with Fresnel-style edge reflections, angle-dependent transparency, or similar effects? Does Reality Composer Pro 3 support index of refraction / IOR controls for transparent or refractive materials? Is there any supported way to create real refraction or physically plausible transmission for glass-like materials in RCP 3? If true refraction or IOR control is not supported, what is the recommended approach for creating convincing glass, crystal, or polished transparent materials for visionOS apps? Are there any sample projects, documentation pages, or WWDC sessions that show the recommended material setup for glass-like surfaces in Reality Composer Pro 3? My goal is to create visually believable glass and crystal-style materials inside the standard visionOS / RealityKit rendering pipeline, preferably using supported RCP material tools rather than unsupported shader workarounds. Any guidance on the current capabilities and recommended workflow in Reality Composer Pro 3 would be appreciated.

RCP 3 Script Graphs in 27.0 appear to be JavaScript-backed and hot-reloadable. SceneKit historically exposed its scene graph to JavaScript via JavaScriptCore, so Apple has bridged a 3D framework to JS before. Questions about the runtime surface: Is there a public runtime API to evaluate JavaScript against a RealityKit scene, or to drive Script Graph behavior programmatically at runtime — or is the JS layer private SPI used only by RCP-authored, baked graphs? If there's a runtime JS layer, what object model is exposed — which entity/component types are bridged, and is that surface documented or intended to become public? What's the hot-reload mechanism, and is it reachable outside RCP's Preview on Device? Can a script graph be constructed or parameterized at runtime from a string, or is authoring strictly RCP-side with baked output loaded as an asset? We ship JavaScript scripting via JavaScriptCore ourselves, so a public RealityKit-to-JS binding would be a natural way to extend it — trying to understand what's public vs. private and the intended direction.

Hello, In the past my apps using animations were unable to use multiple animations. Following online guides, I put together sequences of animations and then used timestamps to playback the animation I wanted. Is there any intention for realitykit to support better selection of animations within our entities? Its somewhat of a limiting factor in what I am willing to do within reality kit. Thanks for the improvements to realitykit

Can the new cloth sim be driven on a skinned character mesh — a cape pinned to the shoulders following skeletal animation — and does it run at interactive rates on visionOS, or is it aimed at non-real-time/hero content? Can a sim be cached/baked for deterministic playback?

Hello, I'm working on a visionOS project that uses Reality Composer Pro, and we are managing our project files with Git. We've noticed that simply opening and closing the Reality Composer Pro application consistently generates changes in the following files, even when no explicit modifications have been made by the developer: {ProjectName}/Packages/RealityKitContent/Package.realitycomposerpro/PluginData/*******/ShaderGraphEditorPluginID/ShaderGraphEditorPluginID {ProjectName}/Packages/RealityKitContent/Package.realitycomposerpro/WorkspaceData/SceneMetadataList.json Could you please clarify the purpose of these files? Why do they appear as modified when no direct changes are made from our end? More importantly, is it safe to add these files to our .gitignore to prevent them from being tracked by Git? We are concerned that ignoring these files might lead to unexpected issues or inconsistencies when other team members pull the latest changes, especially if these files contain critical project metadata or state that needs to be synchronized. Any insights or recommended best practices for managing Reality Composer Pro projects with Git would be greatly appreciated. Thank you for your time and assistance.

Any way to extend the video recording time in Reality Composer Pro from 3:00 to any longer value, such as editing preferences in Terminal or other workaround? Is there any way to use the strap and a USB-C cable as a live video stream input source that would mirror to Quicktime or some other video capture tool? I am assuming there is no online documentation or user manual for the strap, but please correct me if I'm wrong. Thank you.

Reality Composer is no longer available in XCode 15 Release. Is this intended or will be available in later releases? Do I need to revert to Xcode15 Beta8 to get Reality Composer?

Hi there, I'm developing a visionOS app that is using the anchor points and mesh from SceneReconstructionProvider anchor updates. I load an ImmersiveSpace using a RealityView and apply a ShaderGraphMaterial (from a Shader Graph in Reality Composer Pro) to the mesh and use calls to setParameter to dynamically update the material on very rapid frequency. The mesh is locked (no more updates) before the calls to setParameter. This process works for a few minutes but then eventually I get the following error in the console: assertion failure: Index out of range (operator[]:line 789) index = 13662, max = 1 With the following stack trace: Thread 1 Queue : com.apple.main-thread (serial) #0 0x00000002880f90d0 in __abort_with_payload () #1 0x000000028812a6dc in abort_with_payload_wrapper_internal () #2 0x000000028812a710 in abort_with_payload () #3 0x0000000288003f40 in _os_crash_msg () #4 0x00000001dc9ff624 in re::ecs2::ComponentBucketsBase::addComponent () #5 0x00000001dc9ffadc in re::ecs2::ComponentBucketsBase::moveComponent () #6 0x00000001dc8b0278 in re::ecs2::MaterialParameterBlockArrayComponentStateImpl::processPreparingComponents () #7 0x00000001dc8b05e4 in re::ecs2::MaterialParameterBlockArraySystem::update () #8 0x00000001dd008744 in re::Scheduler::executePhase () #9 0x00000001dc032ec4 in re::Engine::executePhase () #10 0x0000000248121898 in RCPSharedSimulationExecuteUpdate () #11 0x00000002264e488c in __59-[MRUISharedSimulation _doJoinWithConnectionContext:error:]_block_invoke.44 () #12 0x0000000268c5fe9c in _UIUpdateSequenceRunNext () #13 0x00000002696ea540 in schedulerStepScheduledMainSectionContinue () #14 0x000000026af8d284 in UC::DriverCore::continueProcessing () #15 0x00000001a1bd4e6c in CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION () #16 0x00000001a1bd4db0 in __CFRunLoopDoSource0 () #17 0x00000001a1bd44f0 in __CFRunLoopDoSources0 () #18 0x00000001a1bd3640 in __CFRunLoopRun () #19 0x00000001a1bce284 in _CFRunLoopRunSpecificWithOptions () #20 0x00000001eff12d2c in GSEventRunModal () #21 0x00000002697de878 in -[UIApplication _run] () #22 0x00000002697e33c0 in UIApplicationMain () #23 0x00000001b56651e4 in closure #1 (Swift.UnsafeMutablePointer<Swift.Optional<Swift.UnsafeMutablePointer<Swift.Int8>>>) -> Swift.Never in SwiftUI.KitRendererCommon(Swift.AnyObject.Type) -> Swift.Never () #24 0x00000001b5664f08 in SwiftUI.runApp<τ_0_0 where τ_0_0: SwiftUI.App>(τ_0_0) -> Swift.Never () #25 0x00000001b53ad570 in static SwiftUI.App.main() -> () () #26 0x0000000101bc7b9c in static MetalRendererApp.$main() () #27 0x0000000101bc7bdc in main () #28 0x0000000197fd0284 in start () Any advice on how to solve this or prevent the error? Thanks!

I have a scene that has been assembled in RCP but I'm losing the correct hierarchy and transforms when running the scene in the headset or the simulator. This is in RCP: This is at runtime with the debugger: As you can see the "MAIN_WAGON" entity is gone and part of the hierarchy are now children of "TRAIN_ROOT" instead. Another issue is that not only part of the hieararchy disappears, it also reverts back to default values of the transform instead of what is set in RCP: This is in RCP: This is in the simulator/headset: I'm filing a feedback ticket too and will post the number here. Anyone had a similar issue and found a fix or workaround ?