[Mesa-dev] gallium r300 driver for PowerPC

[Herminio Hernandez, Jr.]

I have done some more debugging and I do have a question. The clearest,
repeatable issue I am seeing is when I run glxgears in apitrace. The crash
always occrs at GLXChooseVisual. It returns NULL and from the documentation
this means that it is encountering an undefined attribute. I see this when
I am running either Ubuntu or Debian. The other tools (ie gdb and valgrind)
have not given as clear an indication where the problem is (granted I admit
that I may be not using them correctly either). My question is how would I
determine what is causing this? I have search and have not found a clear
explanation on how to troubleshoot this on the web.

Thanks
Herminio

On Tue, Feb 2, 2016 at 4:08 PM, Herminio Hernandez, Jr. <
herminio.hernandezjr at gmail.com> wrote:

> Mike,
>
> When I trace in gdb and let the program run I get the standard error:
>
> Using host libthread_db library "/lib/powerpc-linux-gnu/libthread_db.so.1".
> libGL: OpenDriver: trying /usr/lib/powerpc-linux-gnu/dri/tls/r300_dri.so
> libGL: OpenDriver: trying /usr/lib/powerpc-linux-gnu/dri/r300_dri.so
> libGL error: No matching fbConfigs or visuals found
> libGL error: failed to load driver: r300
> libGL: OpenDriver: trying /usr/lib/powerpc-linux-gnu/dri/tls/swrast_dri.so
> libGL: OpenDriver: trying /usr/lib/powerpc-linux-gnu/dri/swrast_dri.so
> libGL error: No matching fbConfigs or visuals found
> libGL error: failed to load driver: swrast
>
> Both r300 and swrast driver fail to load and I do not get a backtrace.
> When run gdb again and force an interrupt at the point the r300 fails to
> load I see in the trace that it is failing at the driOpenDriver function.
> When I run the program again and stop when the swrast driver fails in the
> trace I see it fail at the same spot. Unless I am reading the backtrace
> wrong I think that is where is the issue is. I am attaching the file so you
> can see.
>
> Herminio
>
>
>
> > On Jan 26, 2016, at 7:49 PM, Michel Dänzer <michel at daenzer.net> wrote:
> >
> > On 26.01.2016 19:15, Herminio Hernandez Jr.  wrote:
> >> Would the same thing apply swrast driver? I see glxgears trying to
> >> fall back to it and relieving the same error.
> >
> > Possibly, though that's a bit weird indeed. Anyway, trace the code
> > execution (e.g. in gdb) and see.
> >
> >
> > --
> > Earthling Michel Dänzer               |               http://www.amd.com
> > Libre software enthusiast             |             Mesa and X developer
>
>
>
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