I would like to know given x Mb of video RAM on a given DRI
supported video card, how can I calculate what the maximum
screen resolution should be?
width * height * fbbpp / 8 == 2D screensize
I'll need to take virtual screen dimensions into account, as well
as double buffering, etc.
I'd like to get as hard solid numbers as I can, as I would like
to have our configuration tools not allow stupid DRI
configurations. I get tonnes of bug reports in the form:
"I cant get 3D screensavers to run on my machine" or
"anything 3D crashes my machine when I leave it for a while"
and the like. Troubleshooting - 9 times out of 10 ends up
finding out that the person is trying to use a 1600x1200 virtual
screensize with a 1400x1050 desktop in depth 24 - on an 8Mb video
card. They expect this stuff to work if the configuration tools
allow it to be configured.
What I want to do is know first of all - what are the actual
valid configurations of DRI for:
Bit depths supported by 3D acceleration engine in hardware,
wether it is supported by DRI in 4.0.3, and if it is in 4.1.0?
I've filled in what I think is correct, please help me fill in
the rest:
Hardware 4.0.3 DRI 4.1.0 DRI
Voodoo 3: 16 16 16
Voodoo 4: 16 16 16
Voodoo 5: 16/32 16/32 16/32
Banshee : 16 16 16
G450 : 16/32 16/32 16/32
G400 : 16/32 16/32 16/32
G200 : 16/32 16/32 16/32
G100 : 16 16 16
r128 : 16/32 16/32 16/32
radeon : 16/32 16/32 16/32
3DLabs : ? ? ?
SiS : ? ? ?
Any others I have missed??
Given that a card supports DRI in a particular res, and using the
above calc to calculate the required memory just for 2d in the
given mode, is there an exact calculation that works across all
cards that i can use to say "This configuration is insane", and
have our configurator disable it?
Any help would be greatly appreciated.
----------------------------------------------------------------------
Mike A. Harris Shipping/mailing address:
OS Systems Engineer 190 Pittsburgh Ave., Sault Ste. Marie,
Red Hat Inc. Ontario, Canada, P6C 5B3
http://www.redhat.com Phone: (705)949-2136
----------------------------------------------------------------------
Latest XFree86 test RPMS: ftp://people.redhat.com/mharris/testing
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