Re: [expert] Re: [Dri-devel] DRI direct (still, IRQ?) sloow

[Svante S. <sva...@te...>]

I've been digging some more into this issue. A  new version of XFree86
(XFree86-4.0.2-1mdk) is installed, a new kernel
(kernel22-2.2.18-1mdk), a new glibc (glibc-2.2-21mdk) etc. The problem
remains :-(

All seems to be due to an IRQ assignment problem. 
cat /proc/interrupts gives:
  5:     314465          XT-PIC  ESS Maestro 2, eth0
and lspci -v gives:
01:00.0 VGA compatible controller: 3Dfx Interactive, Inc. Voodoo Banshee (rev 03) (prog-if 00 [VGA])
	Subsystem: Guillemot Corporation Maxi Gamer Phoenix
	Flags: VGA palette snoop, 66Mhz, fast devsel, IRQ 5
	Memory at 40000000 (32-bit, non-prefetchable)
	Memory at 42000000 (32-bit, prefetchable)
	I/O ports at 1000

The following is pasted from another posting to ex...@li...:

Anyone knows why is IRQ 5 chosen both for my eth0 (tulip, external
card) driver and sound (maestro, on motherboard) on my Compaq Presario
5640/5670 when other interrupts are free: 4,6,7,9,10,11?

How to steer away one of the units from IRQ 5 to avoid interrupt
sharing? In the documentation to both the tulip and maestro driver I
have not found any option to control the IRQ. What unit takes care of
allocating IRQ's if the card driver does not require one, the kernel
or the BIOS?

The BIOS for this computer has very limited number of options, and as
mentioned above the sound hardware is on the motherboard. Also only
two PCI slots are available (one with the ethernet card, the other
with a PCTV card, IRQ 3), so shuffling cards is not much an option.

(I am using the non-fb kernel)

Thanks in advance,
/Svante

Svante Signell writes:
 > Nathan Hand writes:
 >  > > Svante Signell writes:
 > 
 >  > > Thank you all for your replies.
 >  > > The gears problem is solved, but the slowness still remains, see
 >  > > below.
 >  > > setting FX_GLIDE_SWAPINTERVAL=0 make gears jump to 611 fps
 >  > > 
 >  > > q3a demo001 is OK, both with libMesaVoodoGL (33.9 fps) from Q3A 1.11 and libGL from
 >  > > XFree86-4.0.1h (31.8 fps)
 >  > > 
 >  > > But ut, heretic2, hg2, sof-demo all seem to render in SW (or at
 >  > > creeping speeds in HW). Especially starting the games is really
 >  > > slow. For sof-demo and hg2 no sound as user, but as root running X
 >  > > (not as root in X terminal). Can the problems be due to the sound card
 >  > > or the mouse?
 >  > 
 >  > Possibly, but unlikely.
 >  > 
 >  > More likely the ut, heretic2, hg2, sof binaries are finding the
 >  > wrong libGL.so. At least heretic2 you can use +set gl_driver to
 >  > tell it explicitly which libGL.so to use. Otherwise go into the
 >  > games directory for each game and symlink libMesa's and libGL's
 >  > to the /usr/lib/libGL.so (DRI version).
 > I have already linked the real /usr/X11R6/lib/libGL.so.1.2 to libGl.so
 > for heretic. Today I also tried the +set gl_driver by editing the
 > config.cfg file. Same as before:
 > The game start up in windowed mode (not full screen, as edited in the
 > config file??). It refuses to go to full screen! Most noticeably, there
 > is a delay between the key pressing and sound when moving in the setup
 > menus. > 
 >  > There is nothing wrong with your setup now. The 611fps in gears
 >  > proves this. Your games not being accelerated means they've got
 >  > or found the wrong libGL.so.
 > I don't think so. Something else is wrong. Why is Q3 working
 > flawlessly (except for hacking sound)?
 > 
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