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<p style="margin-top:0;margin-bottom:0">Which version of VTK are you using? The latest?</p>
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<p style="margin-top:0;margin-bottom:0">Since a while ago, VTK has a new OpenGL rendering backend.</p>
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<p style="margin-top:0;margin-bottom:0">Try initializing OpenGL2 instead of OpenGL. (just add a "2")</p>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> vtkusers <vtkusers-bounces@public.kitware.com> on behalf of shayan moradkhani <shayan.moradkhani@gmail.com><br>
<b>Sent:</b> June 26, 2018 9:25:54 AM<br>
<b>To:</b> vtkusers@vtk.org<br>
<b>Subject:</b> [vtkusers] error</font>
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<div class="PlainText">does anyone know what these errors are for?<br>
vtk.JPG <<a href="http://vtk.1045678.n5.nabble.com/file/t342474/vtk.JPG">http://vtk.1045678.n5.nabble.com/file/t342474/vtk.JPG</a>>
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--<br>
Sent from: <a href="http://vtk.1045678.n5.nabble.com/VTK-Users-f1224199.html">http://vtk.1045678.n5.nabble.com/VTK-Users-f1224199.html</a><br>
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