device.supportsRaytracing can be used to check if the device supports Raytracing. It seems most of the devices support Raytracing. However, only M3 and iPhone 15 Pro supports hardware Raytracing. How do I check programmatically if a device supports hardware Raytracing? Thank you.

I have followed the tutorial below to build a Vision Pro app. https://developer.apple.com/tutorials/develop-in-swift/create-3d-models-in-the-shared-space When I run the app in Vision Pro Simulator, the models are much darker than the sample in the last picture of the above link. How to fix the problem? Do I need to create lights to illuminate the model? It was not mentioned in the tutorial.

I tried to use the application icon from sample project https://developer.apple.com/documentation/visionos/diorama, but the 3 layers of the app icon are not separated when I hover on the icon in the Vision Pro simulator. Could you please advise how to fix the problem? I am using the latest Xcode Version 15.4 (15F31d). Thank you.

How to create fire effect in Reality Composer Pro? Should I use particle emitter?

I have no clue at all. Any suggestions are welcome. Thank you.

I have tested the MagnifyGesture code below on multiple devices: Vision Pro - working iPhone - working iPad - working macOS - not working In Reality Composer Pro, I have also added the below components to the test model entity: Input Target Collision For macOS, I tried the touchpad pinch gesture and mouse scroll wheel, but neither approach works. How to resolve this issue? Thank you. import SwiftUI import RealityKit import RealityKitContent struct ContentView: View { var body: some View { RealityView { content in // Add the initial RealityKit content if let immersiveContentEntity = try? await Entity(named: "Immersive", in: realityKitContentBundle) { content.add(immersiveContentEntity) } } .gesture(MagnifyGesture() .targetedToAnyEntity() .onChanged(onMagnifyChanged) .onEnded(onMagnifyEnded)) } func onMagnifyChanged(_ value: EntityTargetValue<MagnifyGesture.Value>) { print("onMagnifyChanged") } func onMagnifyEnded(_ value: EntityTargetValue<MagnifyGesture.Value>) { print("onMagnifyEnded") } }