On Wed, Feb 20, 2002 at 10:32:31PM +0000, Keith Whitwell wrote:

> Ian Romanick wrote:
>
> > Since the G550 is, basically, just a slightly enhanced G400/G450, it is
> > supported by the DRI, right?  If so, then does anyone have any information
> > about the "partial T&L support" in the G550?  Now that we've got some T&L
> > support for the Radeon, it might be nice to look at this card, too.
> 
> I don't have any information about it, in fact I've never had access to one of
> the cards to test or verify that the driver works on it.

I looked in the support forums on the Matrox site, and people seem to be
having mixed results.  400 fps in gears (ouch!), but Q3 and UT being
playable.  Not exactly sure how that could work...

> However, if you can get doco, it should be reasonably easy to add
> transformation support (I don't think the card does lighting???).

In searching the net, I don't even think it really supports transformations.
As near as I can tell, it only supports blending transformed verticies.  I'm
starting to wonder if that's even useful at all.

On another note, there was some brief discussion in May of last year about
environment bump-map (EMBM) support on the Matrox cards.  The final
"conclusion" was that it was not supported by the DRI because there was no
extension that covered it.  About 3 months after that discussion, the
ATI_envmap_bumpmap extension appeared.  Does anyone know if this extension
and the functionality of the Matrox hardware are a good match?  The
extension document (see the link below) doesn't mention anything about IP
status, but that may or may not actually mean anything...

http://oss.sgi.com/projects/ogl-sample/registry/ATI/envmap_bumpmap.txt
http://www.mail-archive.com/dri-devel%40lists.sourceforge.net/msg00490.html

-- 
Tell that to the Marines!

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