[Gtkradiant] ATI FireGL 8800 issues

[Timothee Besset]

> 
> 	* Xi Graphics have no driver for the FireGL 8800.
> 	  (ATI doesn't seem to care to give them specs and
> 	  permission... :-/ )
> 

Did you try DRI drivers? You might have better luck with them.

> I grabbed the CVS tree last friday, and got it working by always setting 
> both faces to the same mode. (Most importantly, GL_FILL for brushes, as 
> that's what caused brushes to vanish in the camera view on the 8800.) I 
> suspect that this "fix" also makes G400 cards run with h/w acceleration 
> again.
> 

Do you mean you have to render the brushes in a different way to deal with
ATI driver bugs? Is it valid for both platforms (win32 and linux)? A patch
would be of interest.
Also, does turning on/off the use of display lists change anything.

> 
> BTW, I had to make a few minor changes to get GtkRadiant to build on my 
> system. It might have to do with that system (still...) running Mandrake, 
> but if you're interested, I'll post a patch.
> 

We are aware of some issues which we haven't fixed yet. ETG could give you
some info. We need to do some config checks prior to build I think. Submit
a patch anyway, it may be a good start point to settle this cleanly.

TTimo

On Tue, 15 Oct 2002 11:58:45 +0200
David Olofson <david.olofson@reologica.se> wrote:

> 
> Ok; back again, with a status report:
> 
> 	* Xi Graphics have no driver for the FireGL 8800.
> 	  (ATI doesn't seem to care to give them specs and
> 	  permission... :-/ )
> 
> 	* glPolygonMode() seems to be broken on both Win2k
> 	  and Linux drivers. You can't use GL_LINE on one
> 	  face and GL_FILL on the other.
> 
> 	* I now remember that the Matrox G400 drivers have
> 	  a problem with that as well - althoug they switch
> 	  to 100% software rendering instead of just drawing
> 	  nothing visible, as the 8800 drivers do.
> 
> 
> I grabbed the CVS tree last friday, and got it working by always setting 
> both faces to the same mode. (Most importantly, GL_FILL for brushes, as 
> that's what caused brushes to vanish in the camera view on the 8800.) I 
> suspect that this "fix" also makes G400 cards run with h/w acceleration 
> again.
> 
> If anyone has an idea for a better workaround, I could give it a try. 
> (While I still have the FireGL - I'm probably going to return it and wait 
> for Xi Graphics drivers for the Parhelia or something... Might get a new 
> machine with a GeForce 4 for 3D stuff for now, and keep the G400 for 2D 
> desktop work. Dunno. 3D + high res 2D is just a major PITA. Don't waste 
> your money on real monitors, folks! ;-)
> 
> 
> BTW, I had to make a few minor changes to get GtkRadiant to build on my 
> system. It might have to do with that system (still...) running Mandrake, 
> but if you're interested, I'll post a patch.
> 
> 
> //David Olofson - Programmer, Composer, Open Source Advocate
> 
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