Don't think it has any support round earth as far as I know. Doubt it will ever be re-purposed to make a flight sim. But like Ola mentioned, working with a physically based shader system is wonderful, and fairly straight forward. This is what I would wish for the most in X-plane....well that and maybe an FBX to OBJ converter Perhaps a pre-flight inspection would look like this (THIS NOT MY WORK!!!)...Again this is all direct from the engine, in realtime.