Hello,
I thought I would share my impression of running DOOM3 (250SEK on sale!) using DRI drivers (free!).
SUMMARY: - hardware TCL broken. - some lighting problems with software TCL. - few lockups (save frequently!). - average 10 FPS on AMD XP1800+, Radeon 8500LE, 640x480.
FOLLOWUP:
My goal was to run DOOM3 with a minimal number of changes since
this is a "production" machine. I used kernel-2.6.10-1.741_FC3 and patched xorg-x11-6.8.1.902-1.
Trying to compile current Mesa against xorg-x11-6.8.1.902 is a major PIA[1]. I ended up using mesa-6.2.1 that comes with xorg and port the R200 part of Roland Scheidegger's S3TC patch to this code. See
http://www.theochem.kth.se/~pawsa/dri/ for few more details.
I could confirm that hardware TCL is broken (at least in the version I used) - does anybody know how to fix it?
http://www.theochem.kth.se/~pawsa/dri/tcl-enabled.png
http://www.theochem.kth.se/~pawsa/dri/tcl-disabled.png
Software TCL appears to have some problems, too: http://www.theochem.kth.se/~pawsa/dri/lighting-problem1.png http://www.theochem.kth.se/~pawsa/dri/lighting-problem2.png - can anybody else confirm that?
I could repeatedly get a hardware lockup when standing in certain place and looking at certain point:
http://www.theochem.kth.se/~pawsa/dri/sure-hang.png
The lockup happened twice also when looking at the moving bridge few corridors later.
Pawel
[1] current mesa CVS appears to use a number of constants mostly related to HYPERZ without defining them. Perhaps I should have followed build instructions exactly. I have a patch that gets me through the compilation (it is not something to commit, rather to give an idea where the problems lie). Still, the linking phase stops with some error related to software shaders, I believe.
http://www.theochem.kth.se/~pawsa/dri/mesa-build-changes-20041207.patch
I think the DRI building instruction phase is all nice and great but the whole process is complex and limits the number of people testing the code to hardcore hackers (or perhaps the goal is to reduce number of reporters that have no idea what they are writing about? In a way, I can understand that...:).
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