Can RealityView and Custom render engine (Metal) be mixed for rendering? For example, I want to use Metal for post-processing.

In the RealityKit API, there are instructions for immersive scenes. What should I pay attention to when using full and mixed modes separately or at the same time? How to intelligently control the scene mixing results through the brighten method?

I used other software to export usdz files, hoping to further adjust the PBR and other parameters in the model in Reality Composer Pro. Because usdz is a whole, I cannot use the mouse to select a specific model in usdz on the interface. I have to find the models I want to modify one by one in the list on the left. This method of operation is too inefficient. Is there a better way? Or is there a way to disassemble the usdz file into numerous sub-models and texture material files, so that I can select it with the mouse on the interface in Reality Composer Pro and then modify the PBR, which would be much more efficient.

Hi I am bit confusing about using Reality Composer Pro work pipeline. Searched many thread and got a reply about Reality Composer Pro. the answer was Reality Composer Pro is only can work with Vision Pro. and I found Reality Composer (not pro) which looks support iPhone app building. but cannot found for download way. So my question is What way is existing for building iPhone AR app? Can someone clearly explain this? please let me know what I missed. thanks

In the editor (Reality composer pro), I can edit and mount the IBL component in real time, and the preview effect in the editor is normal. When loading the parsed scene using xcode, some models will appear black. I have tried many model formats (usda, usdc, usdz), and the final effect is the same. However, I can create IBL effects through code, and the effect is normal. I suspect that the IBL component exported by the Realitykit parsing editor has a maximum number of material balls.

How to trigger Reality Composer Pro behaviors compoment's onNotification event from RealityView code?

it is my code let portal = Entity() portal.components[ModelComponent.self] = .init(mesh: .generatePlane(width: Float(size.width), height: Float(size.height), cornerRadius: 0.02), materials: [PortalMaterial()]) portal.components[PortalComponent.self] = .init(target: world) portal.components[PortalComponent.self]?.clippingPlane = .init(position: SIMD3(x: 0, y: 0, z: 0), normal: SIMD3(x: 0, y: 0, z: 0)) portal.components.set(HoverEffectComponent()) I added RealityView to multiple HStacks and implemented the portal effect. I found that the portal effect would cause confusion in the rendering level on some machines, as shown in the figure

Hello :) As title, I have used RCP with reference objects to capture items in real world. My next step is to detect how close the user finger is that object. I had tried to get the entity's relative position to root but found the position, somehow, is always the same regardless of how and where I move around the camera or the object. The entity has a child transform with a collision component, which is used to detect collision when the finger is closed enough to calculate the distance, but it fails as well... Any help will be appreciated, ty

Hi, I have a problem in the new version of visionOS (2.0). When I call a magnify gesture for an attachment some times it works fine but some times the gesture doesn't call onEnded and onChanged is called just one time. Is it something known

Hi, I'm very new to 3D and am currently porting a SwiftUI iOS app to visionOS 2.0. I saw WWDC24 feature Blender in multiple spatial videos, and have begun integrating Blender models and animations into my VisionOS app (I would also like to integrate skeletons and programmatic rigging, more on that later). I'm wondering if there are “Best Practices” for this workflow - from Blender to USD to RCP 2.0 to visionOS 2 in Xcode. I’ve cobbled together the following that has some obvious holes: I’ve been able to find some pre-rigged and pre-animated models online that can serve as a great starting point. As a reference, here is a free model from SketchFab - a simple rigged skeleton with 6 built in animations: https://sketchfab.com/3d-models/skeleton-character-low-poly-8856e0138f424d68a8e0b40e185951f6 When exporting to USD from Blender, I haven’t been able to export more than one animation per USD file. Is there a workflow to export multiple animations in a single USDC file, or is this just not possible? As a temporary workaround, here is a python script I’ve been using to loop through all Blender animations, and export a model for each animation: import bpy import os # Set the directory where you want to save the USD files output_directory = “/path/to/export” # Ensure the directory exists if not os.path.exists(output_directory): os.makedirs(output_directory) # Function to export current scene as USD def export_scene_as_usd(output_path, start_frame, end_frame): bpy.context.scene.frame_start = start_frame bpy.context.scene.frame_end = end_frame # Export the scene as a USD file bpy.ops.wm.usd_export( filepath=output_path, export_animation=True ) # Save the current scene name original_scene = bpy.context.scene.name # Iterate through each action and export it as a USD file for action in bpy.data.actions: # Create a new scene for each action bpy.context.window.scene = bpy.data.scenes[original_scene].copy() new_scene = bpy.context.scene # Link the action to all relevant objects for obj in new_scene.objects: if obj.animation_data is not None: obj.animation_data.action = action # Determine the frame range for the action start_frame, end_frame = action.frame_range # Export the scene as a USD file output_path = os.path.join(output_directory, f"{action.name}.usdc") export_scene_as_usd(output_path, int(start_frame), int(end_frame)) # Delete the temporary scene to free memory bpy.data.scenes.remove(new_scene) print("Export completed.") I have also been able to successfully export rigging armatures as a single Skeleton - each “bone” showing getting imported into Reality Composer Pro 2.0 when exporting/importing manually. I would like to have all of these animations available in a single scene to be used in a RealityView in visionOS - so I have placed all animation models in a RCP scene and created named Timeline Action animations for each, showing the correct model and hiding the rest when triggering specific animations. I apply materials/textures to each so they appear the same, using Shader Graph. Then in SwiftUI I use notifications (as shown here - https://forums.developer.apple.com/forums/thread/756978) to trigger each RCP Timeline Action animation from code. Two questions: Is there a better way than to have multiple models of the same skeleton - each with a different animation - in a scene to be able to trigger multiple animations? Or would this require recreating Blender animations using skeleton rigging and keyframes from within RCP Timelines? If I want to programmatically create custom animations and move parts of the skeleton/armatures - do I need to do this by defining custom components in RCP, using IKRig and define movement of each of the “bones” in Xcode? I’m looking for any tips/tricks/workflow from experienced engineers or 3D artists that can create a more efficient/optimized workflow using Blender, USD, RCP 2 and visionOS 2 with SwiftUI. Thanks so much, I appreciate any help! I am very excited about all the new tools that keep evolving to make spatial apps really fun to build!

Hello, I’m trying to move my app into vision OS, my app is used for pilot to study the airplane system, is a 3d airplane cockpit build with scene kit and I use sprite scene to animate the cockpit instruments . Scenekit allow to apply as material a sprite scene , so I could animate easy all the different instruments and indication there, but I can’t find this option on reality compose pro , is this possible? any suggestions I can look into to animate and simulate instruments.

We can add many models in the Reality Composer Pro scene, but when I use RealityView to display and add modifiers in SwiftUI, the modifiers will have Effect, and I don't want to do this. I hope this modifier will be valid for a single model in the Reality Composer Pro scenario. May I ask how to add modifiers to a single model in the Reality Composer Pro scene?

Hi fellows, I am developing a conceptual prototype to explore how Apple Vision Pro can be applied in Real Estate selling. But I encounter an problem and to consult with the developer community. When rendering a massive 3D entity, sometimes it work fine but sometimes my Vision Pro device automatically reboot (all the running apps are shutdown and then Apple logo appears to reboot) while running the app. I have a 1:1 3D entity imported into the Reality Composer Pro, and I managed to develop a simple rendering Vision Pro app. It works great after I finally made it work and see the 1:1 building in front of me. You can see the full demo video for details: https://www.icloud.com/iclouddrive/0d5QA-sYSehmLF9rEMXsCUyDg#REPtt02_Demo_v1.1 But sometimes when rendering the 1:1 building, my Vision Pro device suddenly reboot. So far I have no clues on its root cause. It might be caused by the not-enough-memory or for safety concern? (since the 3D entity is big and might block a big area of the view) Can any one or even an official provide some guidance here and identify the root cause? Thx much!

hello i wanna play mp4 file in VideoMaterial avPlayer. so first i make to use reality composer pro. I created matterial using the sphere provided by default in Reality Composer Pro and exported it to usdz. and when i play mp4 file in sphere matterial, it's good play But i wanna custom created matterial (ex. shaper3d create 3d modeling) not good play. i make custom created matterial - it's curved matterial curved matterial in shaper3d and exported it to usdz. curved matterial in Reality Composer Pro Scene and exported it to usdz. when i play mp4 file in curved matterial, it's not good play -> not adjust screen play How can I adjust and display the video in a custom usda file?

HI eveyone i've read that USDZ supports LOD to have 3 meshes with high medium and low polygon detail to be visible depending on the distance from the user to the entity... but i dont know how to use it... any experience or... god bless you... a downloadable file with a sample??? thanks a lot !!!!

this week i was watching https://developer.apple.com/videos/play/wwdc2024/10105/ with the amazing "configuration" feature to change the color or mesh straight in quick look, but i tried a lot with goarounds but nothing bring me to success how do i write in the usda files? anytiome i overwrite the usda even with just a "{}" inside... Reality composer pro rejects the file to be open again where is the developer man in the tutorial writing the usda? how is the usda compressed in usdz? (none of the compressors i tried accepeted the modified usda file) this is the code it's suggested in the video #usda 1.0 ( defaultPrim = "iPhone" ) def Xform "iPhone" ( variants = { string Color = "Black_Titanium" } prepend variantSets = ["Color"] ) { variantSet "Color" = { "Black_Titanium" { } "Blue_Titanium" { } "Natural_Titanium" { } "White_Titanium" { } } } but i dont understand how to do it with my own files,

Hello just getting this error as I am trying to run the any new project this error is looking up Thanks Zipzy Games X

Is there a way to make a SpatialAudio object autoplay its assigned track strictly via settings in Reality Composer Pro, no Swift code involved?

With WWDC 24, I was excited to see that apple is bringing their APIs from Vision OS to iOS. I tried using the Object Anchoring component in Reality Composer Pro. Which this works with a Vision Pro, it looks like the entity will spawn at origin if we run the same on iOS and the object anchoring doesn't seem to work. Is this intended? Below is how I'm doing this. I added an Anchoring component and added the .referenceObject file I trained using CreateML. This is the code I'm using to load this scene in. // GrootView.swift // ARTest-New // // Created by Sravan Karuturi on 6/10/24. // import SwiftUI import RealityKit import Box struct GrootView: View { @StateObject private var grootVM = GrootViewModel() @State private var ent: Entity? = nil @State var anchor: Entity? = nil @State var wallAnchor: Entity? = nil @State var floorAnchor: Entity? = nil var body: some View { RealityView{ content in #if os(iOS) await content.setupWorldTracking() content.camera = .worldTracking #endif ent = try? await Entity(named: "Box", in: boxBundle) print(ent?.children) anchor = ent?.findEntity(named: "ObjectAnchor") wallAnchor = ent?.findEntity(named: "WallAnchor") floorAnchor = ent?.findEntity(named: "FloorAnchor") let updateSum = content.subscribe(to: SceneEvents.Update.self){ event in if let anc = anchor, anc.isAnchored { print("Found Item") } if let anc = floorAnchor, anc.isAnchored { print("Found Floor") } if let anc = wallAnchor, anc.isAnchored { print("Wall Anchor") } } content.add(ent!) } } } #Preview { GrootView() } While, something similar seems to work on visionOS, the same doesn't seem to work with iOS. When I run this app, we see all the children and the Found Item is printed constantly even when we don't have the item in the scene. Not really sure if this is just not supported yet on iOS ( I really hope that's not the case ) or if I messed up something somehow

I saw onnoffitacation in the Behavior configuration of Reality Composer pro, which asked me to enter the Nofficatition name, that is to say, this requires swift in Xcode to send a message. There is a message name in the message, so I hope you can write an list for me how to use Swift in Xcode to send a message containing the message name.