Tiago Gusmão

> I'm having a HW problem and i can't enable AGP in linux, which makes the
> hunter, b1900d and the Nimitz lower FPSs dramatically, which i believe
> is caused by the NVRAM filling up with textures thus forcing texture
> transfers to the card (GF4 MX 440 64MB)
> 
> so after Surge mentioned texture compression, i added it in plib, with
> amazing performance improvements in those situations, It also appears to
> be improving FPS in general in other situations.
> 
> it doesn't check for the extension, **before trying**, check glxinfo for
> the presence of "EXT_texture_compression_s3tc"
> it's just an ugly hack, works for me and likely everyone else with s3tc,
> but it's bad code, i know,
> 
> a brief explanation: http://www.digit-life.com/articles/reviews3tcfxt1/
> spec:
> http://oss.sgi.com/projects/ogl-
> sample/registry/EXT/texture_compression_s3tc.txt
> 

I've applied this patch to my copy of plib-cvs. With a nVidia FX5200 card
there is no improvement in frame rate around KSFO, or near Nimitz (but I
don't get a drop there anyway). I think there is an improvement around SF
and the bridges.

I was hoping that it might enable me to run Jon's new KSFO scenery with
Tiger data, but no improvement there at all. Either Jon has to reduce the
ploy count markedly, or I have to upgrade my video card! 

On the other hand, this patch seems to have no adverse effects either.

Vivian




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