On Thursday 24 May 2001 04:59, Steven Newbury wrote:
> >Aaron Holtzman wrote:
> >> It would seem that Gareth Hughes ([EMAIL PROTECTED]) said:
> >> > At no time has the Matrox DRI driver used AGP memory for textures.
> >>
> >> Can you give us a quick outline of the work required to make this
> >> happen?
> >>
> >> cheers,
> >> aaron
> >
> >well.. i tried but couldnt make it stable.
> >one client works from for some time but two wont.
> >i guess its because i still couldnt figure out how to sync
> >texture uploads between contexts.
> >agptexture support was pretty complete anyway :)
> >when someone else wants to take a look....
>
> [patch snipped]
>
> I have been trying your patch against the current XFree86-CVS and it seems
> to work quite well with my G400MAX. running quake2,Q3A and xscreensaver
> hacks. Running at 1600x1200x32 with 32Mb allocated to agpsize I did not
> encounter any instability. I have been playing Q3 with no crashes at all -
> even running lament from XScreenSaver 3.32 at the same time doesn't seem to
> cause any problems.
>
> There are a couple of quirks though, The option AGPSize seems to have no
> effect, I haven't looked into this but I suppose it should be quite an easy
> fix. For my tests I just hardcoded the agpsize in mga_dri.c.
>
> There does seem to be a strange problem with Q3 when running in vertex
> mode. The frame rate drops down to 5-7 FPS for short periods in certain
> places. It seems like is doing a texture upload but it keeps doing it..
> Running in lightmap mode seems okay. It doesn't seem to matter what
> detail textures are used either, it runs fine at maximum with lightmap
> turned on.
My mistake, the slowdowns occur when 32bit depth is selected as apposed to
default., makes more sense really.
>
> I did encounter problems when I tried settimg the onboard texture memory to
> zero though. Normally at 1600x1200x32 I have about 2.5Mb left for textures
> on my G400, wIth it set to zero, Q3 seemed okay when first run but
> suffered texture upload errors of some kind and died when the video was
> restarted. Also the Q3 cinematics ran in Mach64/Voodoo compatibility
> mode?!?
>
> My system is: G400MAX, AMD K6-2@550, Microstar ALI chipset
> motherboard,128Mb 100Mhz SDRAM AGP2x linux-2.4.4-ac9+tux+imon RedHat-7.1
> (gcc-2.96)
>
> Now all I need to do is to upgrade my K6-2 to an Athlon and run at AGP4x
> with 266Mhz ram :)
>
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