use with mesa

[Burlen Loring]

On 11/07/2013 10:48 AM, José Fonseca wrote:
>
>
>
> On Thu, Nov 7, 2013 at 6:22 PM, Burlen Loring <bloring at lbl.gov 
> <mailto:bloring at lbl.gov>> wrote:
>
>     On 11/07/2013 10:02 AM, José Fonseca wrote:
>>
>>
>>
>>     On Thu, Nov 7, 2013 at 5:42 PM, Burlen Loring <bloring at lbl.gov
>>     <mailto:bloring at lbl.gov>> wrote:
>>
>>         On 11/07/2013 09:31 AM, Alexander Monakov wrote:
>>
>>
>>             On Thu, 7 Nov 2013, Burlen Loring wrote:
>>
>>                 Hi,
>>
>>                 I tried to use apitrace with a debug build of mesa
>>                 today and it segv'd.
>>                 However it works fine when used with the system
>>                 installed ATI drivers. With
>>                 the mesa build I tried setting LD_PRELOAD and
>>                 LD_LIBRARY_PATH to no avail. Any
>>                 ideas what am I doing wrong?
>>
>>             No.  Many people use apitrace with Mesa, including debug
>>             builds.  Try showing
>>             your exact command line and backtrace from gdb.  Details
>>             on how you configured
>>             Mesa might also help.
>>
>>             Alexander
>>
>>         Alexandr, thanks for trying to help, here are details you
>>         asked about.
>>
>>         my mesa conig:
>>         ./configure CXXFLAGS="-O2 -g" CFLAGS="-O2 -g" --disable-xvmc
>>         --disable-glx --disable-dri --with-dri-drivers=
>>         --with-gallium-drivers= --enable-texture-float
>>         --disable-shared-glapi --disable-egl --with-egl-platforms=
>>         --enable-osmesa --with-osmesa-bits=32
>>         --enable-gallium-llvm=no --prefix=/work/apps/mesa/devel/classic
>>
>>         how I ran apitrace
>>         LD_PRELOAD=/work/apps/mesa/devel/classic/lib/libOSMesa32.so
>>         /work/apps/apitrace/devel/bin/apitrace trace
>>         --output=mesa-line-trace
>>         /work/VTK/vtk-mesa-dev/bin/vtkChartsCoreCxxTests
>>         "TestPieChart" "-D"
>>         "/work/VTK/vtk-mesa-dev/ExternalData/Testing" "-T"
>>         "/work/VTK/vtk-mesa-dev/Testing/Temporary" "-V"
>>         "/work/VTK/vtk-mesa-dev/ExternalData/Charts/Core/Testing/Data/Baseline/TestPieChart.png"
>>
>>
>>     I strongly suspect that the problem is the LD_PRELOAD will
>>     interfere with a apitrace, as apitrace too, uses LD_PRELOAD to do
>>     its thing. I think think this will ever work.
>>
>>     If you want to trace Mesa, I suggest you build the pure XLIB
>>     libGL.so sw rasterizer, and then use LD_LIBRARY_PATH=... . This
>>     works -- I use it very often.
>>
>>     Jose
>>
>
>     Hi Jose, Thanks for trying to help. With/without LD_PRELOAD the
>     result is the same. I'm working on a parallel rendering
>     application for use on systems that do not run X11, and thus I
>     don't built mesa with any X11 features. Is X11 a requirement for
>     apitrace?
>
>
> On Linux X11 is a requirement when tracing with `apitrace trace 
> --api=gl`.  EGL is a requirement when tracing with --api=egl. We don't 
> support anything else on unices -- let's say that apitrace is not 
> "window API agnostic" -- it needs to know windows specfic things like 
> GL contexts etc.
>
I see. A feature request then: OSMesa support for apitrace. :-)

Thanks for helping me figure out what the issue is
Burlen

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