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<div class="moz-cite-prefix"><br>
<blockquote type="cite">
<pre style="margin-top: 0px; margin-bottom: 0px; color: rgb(0, 0, 0); font-size: 13px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: left; text-indent: 0px; text-transform: none; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; background-color: rgb(216, 216, 216);">vtkRenderingOpenGLCxx-LoadOpenGLExtension ...***Exception: SegFault 0.21 sec</pre>
</blockquote>
Perhaps you've linked libraries from multiple drivers? I've seen
this test segv when two GL libs are mixed, the render context is
invalid and glGetString returns NULL. In that case it's not a bug
in VTK but rather a build issue since you should only be using a
single OpenGL library.<br>
<br>
Could you report the output of<br>
<br>
grep ^OPENGL_ CMakeCache.txt<br>
<br>
If you haven't already rm your build re-configure and re make. you
should do this after any changes to the open gl drivers.<br>
<br>
On 08/29/2013 10:47 AM, Jose Ignacio Prieto wrote:<br>
</div>
<blockquote
cite="mid:CANkppu43VZE6XQpnKYjoBtcZafzkS7bzKSfVVJaUbNyaM26CEQ@mail.gmail.com"
type="cite">
<div dir="ltr">The issue is <a moz-do-not-send="true"
href="http://www.vtk.org/Bug/view.php?id=14254">0014254</a></div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Thu, Aug 29, 2013 at 12:51 PM,
burlen <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:burlen.loring@gmail.com" target="_blank">burlen.loring@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>Jose, <br>
<br>
with all of your driver woes I think it's likely that
you're unintentionally using Ubuntu's Mesa libGL rather
than NVIDIA's. At least this will explain the error
report below.<br>
<br>
Mesa, depending on release version and renderer, has
some bugs that prevent this class from working correctly
and some or all of the vtkOpenGLGPUVolumeRayCastMapper
ctests fail. That's why the class has been disabled if
the driver is Mesa.<br>
<br>
To confirm which driver you're using include the output
from<br>
<br>
ctest -R LoadOpenGLExt --verbose<br>
<br>
Please include this in your bug report.<span
class="HOEnZb"><font color="#888888"><br>
<br>
Burlen</font></span>
<div>
<div class="h5"><br>
<br>
On 08/29/2013 08:27 AM, David E DeMarle wrote:<br>
</div>
</div>
</div>
<div>
<div class="h5">
<blockquote type="cite">
<div dir="ltr">Yes please file a bug on mantis at <a
moz-do-not-send="true"
href="http://vtk.org/Bug/my_view_page.php"
target="_blank">http://vtk.org/Bug/my_view_page.php</a>.
<div><br>
</div>
<div>In the report, please fill in the whatever
error messages you can and point out that
commit 520ba015c0b7a451242d0712bd60fd953aa9dfcf
was the likely culprit.</div>
<div><br>
</div>
<div>thanks</div>
</div>
<div class="gmail_extra"><br clear="all">
<div>David E DeMarle<br>
Kitware, Inc.<br>
R&D Engineer<br>
21 Corporate Drive<br>
Clifton Park, NY 12065-8662<br>
Phone: <a moz-do-not-send="true"
href="tel:518-881-4909" value="+15188814909"
target="_blank">518-881-4909</a></div>
<br>
<br>
<div class="gmail_quote">On Thu, Aug 29, 2013 at
11:20 AM, Jose Ignacio Prieto <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:joseignacio.prieto@gmail.com"
target="_blank">joseignacio.prieto@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0
0 0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">
<div dir="ltr">
<div>I finally installed and uninstall
nvidia drivers and xorg and nothing
worked. Then I realized that the
conflicting file
Rendering/volumeopengl/vtkopenglgpuvolumeraycasmapper.cxx
was modified 8 days ago. I switched back
from head to v.6.0.0 and it worked again.<br>
</div>
I don't know how to report bugs the
institutional way. I will try to assign a
mantis ticket later. <br>
</div>
<div>
<div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Wed, Aug 28,
2013 at 2:44 PM, Jose Ignacio Prieto <span
dir="ltr"><<a
moz-do-not-send="true"
href="mailto:joseignacio.prieto@gmail.com"
target="_blank">joseignacio.prieto@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px #ccc
solid;padding-left:1ex">
<div dir="ltr">
<div>
<div>
<div>
<div>Hi, I know this is not
exactly vtk but I hope you
can get my opengl error. I
made a mistake updating a
driver and now I have no
idea how to solve it. <br>
</div>
I got interested in trying
itk filters solved through
gpu, so I installed CUDA
following this link:<br>
<a moz-do-not-send="true"
href="http://docs.nvidia.com/cuda/cuda-getting-started-guide-for-linux/index.html#package-manager-installation"
target="_blank">http://docs.nvidia.com/cuda/cuda-getting-started-guide-for-linux/index.html#package-manager-installation</a><br>
</div>
Then I realized they were
useless so I built a new set
of vtk6.1+itk4.5+qt4.8.5. The
problem is that my old files
compiled with
vtk6.1+itk4.5+qt4.8.4 don't
work anymore. Specifically I
had a volume rendered with
vtkGPUVolumeRayCastMapper and
now it shows an error <br>
<p
style="margin:0px;text-indent:0px"><span
style="font-family:'Monospace';font-size:9pt;color:rgb(190,20,20)">ERROR:
In
/home/cib/Source/Vtk6/Rendering/VolumeOpenGL/vtkOpenGLGPUVolumeRayCastMapper.cxx,
line 4101</span></p>
<p
style="margin:0px;text-indent:0px"><span
style="font-family:'Monospace';font-size:9pt;color:rgb(190,20,20)">vtkOpenGLGPUVolumeRayCastMapper
(0x7299be0): Rendering
failed because the
following OpenGL
extensions are required
but not supported: <br>
</span></p>
<p
style="margin:0px;text-indent:0px"><br>
<span
style="font-family:'Monospace';font-size:9pt;color:rgb(190,20,20)"></span></p>
I have installed-uninstalled
nvidia drivers many times but
I have no clue on what is
going on. Seems that it
changed
/usr/local/x86.../libGL.so and
libGLU.so <br>
</div>
I am using ubuntu 12.4, my
graphics card is nvidia geforce
9800 and qt 4.8.5<br>
<br>
</div>
Thank you very much!<span><font
color="#888888"><br>
<div>
<div>
<div>
<div><br clear="all">
<div>
<div>
<div><br>
-- <br>
José Ignacio
Prieto<br>
celular(nuevo):
94348182 </div>
</div>
</div>
</div>
</div>
</div>
</div>
</font></span></div>
</blockquote>
</div>
<br>
<br clear="all">
<br>
-- <br>
José Ignacio Prieto<br>
celular(nuevo): 94348182 </div>
</div>
</div>
<br>
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<br>
</div>
</div>
</div>
</blockquote>
</div>
<br>
<br clear="all">
<br>
-- <br>
José Ignacio Prieto<br>
celular(nuevo): 94348182
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