Linux and OpenGL hardware

[David Gobbi]

Interesting development,

The G400 will do 32-bit textures with VTK, however, I had to patch
vtkOpenGLTextureMapper to make VTK explicitly request 32 bit texture
maps.  So, my thought is that this card is a much better choice than
the TNT2 cards as far as Linux support goes. 

It would probably be worthwhile to have a Set/Get mode in vtkTexture
to allow the user to choose between 16 bit/32 bit textures.  

 - David

--
  David Gobbi, MSc                    dgobbi at irus.rri.on.ca
  Advanced Imaging Research Group
  Robarts Research Institute, University of Western Ontario

On Wed, 15 Dec 1999, David Gobbi wrote:

> Hi Oliver,
> 
> We have been using both the TNT2 cards (ELSA Erazor III, Viper V770)
> and Matrox cards (G200 and G400).  Both work very well, except for
> some issues with memory cleanup for texture maps (if you don't do
> intensive texture map reloading, you won't notice the problem).
> The TNT2 support is 16-bit only under Linux, and I haven't gotten
> the 32-bit texture support for the G400 working.
> 
> My pick would be the G400.  Linux support appears to be moving ahead 
> much more rapidly than the TNT2 or Voodoo boards and it provides 
> better visual quality than either. 
> 
> There is also commercial (i.e. $100US and up) support for 3DLabs, 
> ATI, and Evans and Sutherland from Accelerated X.
> 
>  - David
> 
> --
>   David Gobbi, MSc                    dgobbi at irus.rri.on.ca
>   Advanced Imaging Research Group
>   Robarts Research Institute, University of Western Ontario
> 
> On Wed, 15 Dec 1999, Oliver Gloth wrote:
> 
> > Hi everyone,
> > 
> > Due to the budget system at German universities we have to buy a PC,
> > which will also be used for VTK-based visuliasation, by Friday. My
> > question is what graphics hardware to people recommend. We plan to use
> > Linux on that PC. Unfortunately we don't have lot's of experience with
> > OpenGL. Right now we use the MesaGL library (software rendering only).
> > Any help is very welcome!
> > 
> > Thanks in advance,
> > Oliver
> > 
> > 
> > 
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> 



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