<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 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 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 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 class="HOEnZb"><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
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