[OT] is graphics acceleration/GL dependent on X11?

[Krzys Majewski]

Another graphics adapter question.  Under linux, are the drivers which
exploit hardware acceleration dependent on X11? My guess is some games
will run  under svgalib  or whatever,  but is that  it? It  would seem
reasonable to me to have some  interface to the graphics card which is
independent  of  X11  (for example  so  I  could  watch DVD's  on  the
console), but i'm not sure if that is really the case.. 
-chris