Just wanted to mention that the "old" 3Dfx compression tool is available at
glide.sourceforge.net. It's called TEXUS2 and is included in the Glide
"swlib" CVS module. It's a generic library that includes DXTn compression.
The Mesa 3Dfx accel driver uses it as an external library and works quite
well. The compression algorithm was keeped outside Mesa because of
S3/Microsoft's patent restriction and I think it would be safe to do the
same for DRI. see http://dri.sourceforge.net/cgi-bin/moin.cgi/S3TC

Hiroshi Morii
koolsmoky(at)users.sourceforge.net
http://glide.sourceforge.net


----- Original Message ----- 
From: "Dieter Nützel" <[EMAIL PROTECTED]>
To: "Roland Scheidegger" <[EMAIL PROTECTED]>
Cc: "Adam K Kirchhoff" <[EMAIL PROTECTED]>;
<[EMAIL PROTECTED]>
Sent: Saturday, December 27, 2003 10:57 PM
Subject: Re: [Dri-devel] S3TC & NWN.


Am Samstag, 27. Dezember 2003 02:47 schrieb Roland Scheidegger:
> Dieter Nützel wrote:
> > Am Freitag, 26. Dezember 2003 17:46 schrieb Adam K Kirchhoff:
> >>Just wanted to say that Roland's S3TC patches work incredibly well on my
> >>8500 with NWN.  I can now get just as high quality textures with the DRI
> >>drivers as I do with the FireGL drivers :-)
> >
> > Roland, do you have a new version (after Ian's hints) handy?
>
> patch is not quite ready, but I'm working on it.
> I've fixed a stupid problem with wrong texture alignment (could only be
> seen with small textures/mipmaps and only if the texture height is
> larger than the width), and integrated a texture compression algorithm
> (crappy but working), so the problem with reporting extensions but not
> really supporting them happily goes away ;-). Some Mesa changes were
> also necessary because Mesa can't handle the case when an application
> requests a compressed format and the ChooseTextureFormat function
> returns an uncompressed one (and vice versa, but that case doesn't
> exactly seem to be supported by the OGL spec).
> Need to clean it up a bit (and the DXT5 compressor isn't finished),
> probably early next week.

Do you had a look at the "old" 3dfx DXT tools?
I think there was a compression tool inside.
Have to digg...

-- 
Dieter Nützel
@home: <Dieter.Nuetzel () hamburg ! de>


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