Every cross-platform engine is written in C + + . Performance aside, having Metal C + + API would save tremendous amount of effort for developers worldwide.

Same problem. Apple, don't be Google!

I have a Mac mini (2012) with macOS Catalina 10.15.7. So NEHotspotNetwork.fetchCurrent() is not available. Here is my test code: mLocationManager = CLLocationManager() mLocationManager!.delegate = self mLocationManager!.requestAlwaysAuthorization() ... func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {      print("status: \(status.rawValue)")      let interfaces = CNCopySupportedInterfaces() as NSArray?     print("interfaces: \(interfaces!.count)")      let interface = interfaces![0] as! CFString      print("interface: [\(interface)]")      let info = CNCopyCurrentNetworkInfo(interface) as NSDictionary?      if (info == nil) {       print("info: nil")      } else {       print("info: not nil")      } } // OUTPUT: status: 0 (notDetermined) interfaces: 1 interface: [en0] 2022-08-03 10:43:23.335260+0100 DimensionX[3066:1830775] [] nehelper sent invalid result code [1] for Wi-Fi information request info: nil

I'm not getting any prompt. Calling requestAlwaysAuthorization() in viewDidLoad of my view class ARViewCtrl: UIViewController, MTKViewDelegate, UITextInputTraits, CLLocationManagerDelegate { ... } Why doesn't this prompt appear?

The problem is solved. I changed requestAlwaysAuthorization() tp requestWhenInUseAuthorization() and added NSLocationWhenInUseUsageDescription to info.plist. Once the prompt showed up everything started to work including the SpatialAnchors lib. Thanks for helping me!