I was just curious...In some of the major games out there (thinking specifically of first-player), you can choose to play using software, OpenGL, or DirectX APIs. Are there conversion programs out there that will translate your OpenGL code to DirectX, or do these companies (like Valve, for instance) have programmers that create the game in both OpenGL and DirectX seperately?

If you''re careful on how you build your game in the first place, replacing something like the rendering code isn''t really all that difficult. I think just about all companies do that kind of thing themselves.

Jonathan