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Subject:	Re: [ANNOUNCEMENT] mesa 11.0.9-2
To:	cygwin AT cygwin DOT com
References:	<announce DOT 201602220900 DOT u1M90xBM023169 AT int-mx11 DOT intmail DOT prod DOT int DOT phx2 DOT redhat DOT com>
From:	Marco Atzeri <marco DOT atzeri AT gmail DOT com>
Message-ID:	<570D122B.50307@gmail.com>
Date:	Tue, 12 Apr 2016 17:20:11 +0200
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On 22/02/2016 10:00, Yaakov Selkowitz wrote:
> The following packages have been uploaded to the Cygwin distribution:
>
> * mesa-11.0.9-2
> * dri-drivers-11.0.9-2
> * libglapi0-11.0.9-2
> * libGL1-11.0.9-2
> * libGL-devel-11.0.9-2
> * libOSMesa8-11.0.9-2
> * libOSMesa-devel-11.0.9-2
> * libEGL1-11.0.9-2
> * libEGL-devel-11.0.9-2
> * libGLESv2_2-11.0.9-2
> * libGLESv2-devel-11.0.9-2
> * windowsdriproto-11.0.9-2
>
> Mesa is an open-source implementation of the OpenGL specification, a system
> for rendering interactive 3D graphics.
>
> Complete documentation on OpenGL usage and configuration can be found here:
>
> http://x.cygwin.com/docs/ug/using-glx.html
>
> This release has been rebuilt for LLVM 3.7.
>
> --
> Yaakov
>

Hi Yaakov,
we found a case where the 32bit is segfaulting
while dri-drivers-11.0.9-1
works fine.
For reference:
https://cygwin.com/ml/cygwin/2016-04/msg00245.html
https://cygwin.com/ml/cygwin/2016-04/msg00251.html

To replicate with octave is enough :
run from xterm
   /usr/bin/octave-cli-4.0.1.exe

  x=1:100;
  plot(x,x)

as dri-drivers seems absent from mesa-debuginfo
I can not provide you a meaningful backtrace:

#0  0xfc6d00a0 in ?? ()
#1  0x43934357 in gallium_dri!__driDriverGetExtensions_swrast ()
    from E:/cygwin/lib/dri/swrast_dri.so
#2  0x439346c6 in gallium_dri!__driDriverGetExtensions_swrast ()
    from E:/cygwin/lib/dri/swrast_dri.so
...
#12 0x43563ce9 in gallium_dri!__driDriverGetExtensions_swrast ()
    from E:/cygwin/lib/dri/swrast_dri.so
#13 0x4abfa82c in opengl_renderer::set_polygon_offset (this=0x80610180,
     on=false, offset=0)
     at /usr/src/debug/octave-4.0.1-1/libinterp/corefcn/gl-render.cc:2916

However I see that also mesa-demos segfault

$ cd /usr/lib/mesa-demos
$ ./quad-clip.exe
GL_RENDERER   = Gallium 0.4 on llvmpipe (LLVM 3.7, 256 bits)
GL_VERSION    = 3.0 Mesa 11.0.9
GL_VENDOR     = VMware, Inc.
Segmentation fault (core dumped)

Regards
Marco


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