Gaming API's and 3d cards

[albert e martinez eet stnt]

        I want to put together a Linux PC.  Before I can do that I have a lot to
learn.  I read the Linux Quake article in the Jan. Linux Journal and I
have a question.  Why would OpenGL Quake require a Voodoo or Voodoo2 card
and not another card that runs OpenGL like a TNT card?  I thought they
were different API's and 3dfx cards required only for Glide.


Thanks,
        AL