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As a graphics developer, I am a strong proponent of OpenGL. The graphics code is cross platform, so I can compile it on a Mac, *NIX, Windows, etc without rewriting the program completely.
Both platforms have essentially the same features and performance. Both DX and OGL are very fast and can do a lot of things.
On the surface, they may appear to be the same. However, they are worlds apart
- OGL supports extensions to the code base. For example, if ATI wants to add some hardware-specific function to their boards, OGL can take advantage of it and you don't need to rewrite the OGL API around it
- OGL is not COM based. For most programmers, this is a godsend. DX is COM based, and there is no way around that.
- OGL is not OO. You can write OGL code in a straightforward linear fashion, or you can write it with an OO style. DX is OO by design.
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