[comp.windows.x] Xsun/cgsix0

ram@claude.umb.EDU (Robert Morris) (03/08/90)

I can not tell the difference between Xsun with and without the cgsix0
support and would like some advice on what may be happening (or even a
torture test that would tell me _if_ something is happening).

I have a SparcStation 1 with a graphics accelerator on it. I
recompiled Xsun by putting #define FBTYPE_SUNFAST_COLOR in sun.cf. I
remade clean, Makefiles, includes and the required libraries. Then I
did make in the server directory. I verified that the cgsix code is
actually compiled in. I did MAKEDEV cgsix and really have a cgsix0
node. 

I start the server with 

	xinit -- /usr/local/src/other/X11R4/mit/server/Xsun -dev /dev/cgsix0

and find no performance difference between that and starting the
vanilla server via xinit or starting the new one with /dev/fb (or
indeed, starting the vanilla server with no /dev/cgsix0 present).

Most of my impressions are formed from twm and xterm's.


What should I be looking for (at?)

Thanks
Bob Morris

rws@EXPO.LCS.MIT.EDU (Bob Scheifler) (03/08/90)

The Xsun server from MIT does *not* make use of the graphics accelerator;
it simply uses the device as a dumb frame buffer.  If you want to make
use of the graphics accelerator, buy a server from someone that supports
it.  (If you just want to make the MIT Xsun server go a little faster, use
a CG3 instead. :-)