Re: [Dri-devel] DRI direct sloow, how to debug/trace (please)?

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

Nathan,

thanks for your reply. See below.

Nathan Hand writes:
 > On Tue, Jan 16, 2001 at 12:58:16AM +0100, Svante Signell wrote:
 > > 
 > > Q3A: OK, no problem, using libGL.so.1,2 from Mesa-3.4
 > > HG2: OK
 > > Heretic 2: OK after full screen patch 1.06a
 > > sof-demo: OK
 > > descent3-demo: not OK
 > 
 > In what way is descent 3 not OK?
Back later on this one, problably same as for UT (SW fallbacks?).
 > 
 > > ut(436): not OK. The introductory video 'never' finishes. Sound hacks
 > > on and off and video runs at normal speed, the suddenly slows down,
 > > normal speed again, slows down, creeps...<ESC>. Same when in game mode.
 > > Since the Glide libraries in UT requires libglide.so.2 and this is not
 > > supported in X4, this option is no alternative!? 
 > 
 > You can install both glide libraries, but you'll have to close X
 > in order to use a glide application.
...
 > 
 > > Please, anyone give me a hint how to proceed the tracking down the
 > > causes of problems. More info on request.
 > 
 > UT is just slow. But you can check the following...
 > 
 >     $ cd /home/nathanh/.loki/ut/System
 >     $ emacs UnrealTournament.ini
 > 
 > In the section marked [Engine.Engine] make sure you have
 > 
 >     GameRenderDevice=SDLGLDrv.SDLGLRenderDevice
 >     WindowedRenderDevice=SDLGLDrv.SDLGLRenderDevice
 >     RenderDevice=SDLGLDrv.SDLGLRenderDevice
Yes, I have.
 > 
 > In the section marked [SDLGLDrv.SDLGLRenderDevice] you need
 > 
 >     OpenGLLibName=/usr/lib/libGL.so.1
Yes, the same libGl.so.1.2 as for Q3A, see above,  is used.
 > 
 > Finally, make sure you're using 16bpp mode. Unreal Tournament is
 > unbearably slow in 32bpp mode. 
Yes, I'm using 16 bpp.

I don't beleive UT would be this slow. The driver seems to switch back
and forth between SW and HW mode?? The previous Glide+3.3.x solution on the
same computer was running at a reasonable speed, at least at
640x480x16bits. On another computer (2x450MHz) with a G400 DH no max,
I don't experience this problem: getting around 15 fps avg @800x600x16bit
for utbench.

/Svante