public static IMTLDevice [] GetAllDevices(ref NSObject observer, MTLDeviceNotificationHandler handler)
{
if (observer == null)
{
throw new ArgumentNullException("observer");
}
IntPtr handle = observer.Handle;
unsafe
{
BlockLiteral *block_ptr_handler;
BlockLiteral block_handler;
block_handler = new BlockLiteral();
block_ptr_handler = &block_handler;
block_handler.SetupBlockUnsafe(static_notificationHandler, handler);
var rv = MTLCopyAllDevicesWithObserver(ref handle, (void *)block_ptr_handler);
var obj = NSArray.ArrayFromHandle <IMTLDevice> (rv);
if (handle != observer.Handle)
{
observer = Runtime.GetNSObject(handle);
}
return(obj);
}
}
public static IMTLDevice [] GetAllDevices(ref NSObject observer, MTLDeviceNotificationHandler handler)
{
var rv = GetAllDevices(handler, out var obs);
observer = obs;
return(rv);
}
public static IMTLDevice [] GetAllDevices(MTLDeviceNotificationHandler handler, out NSObject observer)
{
var block_handler = new BlockLiteral();
block_handler.SetupBlockUnsafe(static_notificationHandler, handler);
var rv = MTLCopyAllDevicesWithObserver(out var observer_handle, ref block_handler);
var obj = NSArray.ArrayFromHandle <IMTLDevice> (rv);
NSObject.DangerousRelease(rv);
block_handler.CleanupBlock();
observer = Runtime.GetNSObject(observer_handle);
NSObject.DangerousRelease(observer_handle); // Apple's documentation says "The observer out parameter is returned with a +1 retain count [...]."
return(obj);
}
