>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.
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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