XAML support added

Hi,

I’m working on a game engine called Solarus used for Snes Zelda-like games, and I’ve just recently added DirectX support on top of XAML, right now because of threading issues, there must be two functions, one to init SDL and the other one the SDL game loop.

I don’t know how to submit this or if it’s a good patch to have.

This is the way it works:

Right now I’m looking towards using Angle and OpenGL with XAML, do you have any progress on this?

Thanks!