I can't claim to know the ins and outs of either API, but as an avid gamer, I know that I prefer OpenGL over D3D by leaps and bounds. In my experience (at least on my RivaTNT card), GL yields a marginal to sometimes phenomenal increase in framerate over D3D. In addition, the image quality is almost always noticeably superior.
I guess I was always under the impression that OGL was a superior API, but that Direct3D was simply easier to program for and better supported.
*shrug*
(but you knew that)
I guess I was always under the impression that OGL was a superior API, but that Direct3D was simply easier to program for and better supported. *shrug*
-Degenerate