I'm teaching myself DirectX 9.0, and right now I'm trying to figure out how to use it to multiply all the vectors* in a buffer by a rotation matrix with a single function call. I cannot find a ...
There's no reason you can't use both. OpenGL is graphics only whereas DirectX includes APIs for audio (DirectSound), 3d positional sound (DirectSound3D), video playback (DirectShow), network gaming ...
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