<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(11,83,148)">The biggest downside to using the OpenGL backend is that limited support on newer architectures as it uses the OpenGL 1.1 fixed function pipeline (deprecated since over a decade now). </div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(11,83,148)"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(11,83,148)">Some blog posts that provide more info on the OpenGL2 backend:</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(11,83,148)"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(11,83,148)"><a href="https://blog.kitware.com/new-opengl-rendering-in-vtk/">https://blog.kitware.com/new-opengl-rendering-in-vtk/</a></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(11,83,148)"><a href="https://blog.kitware.com/rendering-engine-improvements-in-vtk/">https://blog.kitware.com/rendering-engine-improvements-in-vtk/</a><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(11,83,148)"><a href="https://blog.kitware.com/volume-rendering-improvements-in-vtk/">https://blog.kitware.com/volume-rendering-improvements-in-vtk/</a><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(11,83,148)"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(11,83,148)">Having said that, do you have a specific use case for the vtkGUISupportQtOpenGL module? </div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(11,83,148)">For most applications, I find myself just compiling the vtkGUISupportQt module and using QVTKWidget and QVTKInteractor.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(11,83,148)"><br></div><div class="gmail_extra"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><span style="color:rgb(11,83,148)"><span style="font-family:verdana,sans-serif">Sankhesh</span></span><div><b></b><br> </div></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
<br><div class="gmail_quote">On Wed, Jun 29, 2016 at 10:43 AM, Elvis Stansvik <span dir="ltr"><<a href="mailto:elvis.stansvik@orexplore.com" target="_blank">elvis.stansvik@orexplore.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 class="gmail_extra"><div class="gmail_quote"><span class="">2016-06-29 16:37 GMT+02:00 Sankhesh Jhaveri <span dir="ltr"><<a href="mailto:sankhesh.jhaveri@kitware.com" target="_blank">sankhesh.jhaveri@kitware.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div style="font-family:verdana,sans-serif;font-size:small;color:rgb(11,83,148)">Hi Elvis,</div><div style="font-family:verdana,sans-serif;font-size:small;color:rgb(11,83,148)"><br></div><div style="font-family:verdana,sans-serif;font-size:small;color:rgb(11,83,148)">vtkGUISupportQtOpenGL module hasn't been ported to the OpenGL2 backend yet.</div><div style="font-family:verdana,sans-serif;font-size:small;color:rgb(11,83,148)"><br></div><div style="font-family:verdana,sans-serif;font-size:small;color:rgb(11,83,148)">See: <a href="https://github.com/Kitware/VTK/commit/e58ca401466f9af4c542c085f7b599b6bde939c8" target="_blank">https://github.com/Kitware/VTK/commit/e58ca401466f9af4c542c085f7b599b6bde939c8</a></div><div class="gmail_extra"><br></div><div class="gmail_extra"><div style="font-family:verdana,sans-serif;font-size:small;color:rgb(11,83,148)">For now, it just works with the OpenGL backend.</div></div></div></blockquote><div><br></div></span><div>Aha. That explains it. Thanks.<br><br></div><div>Are there any big downsides to using the OpenGL backend? What are the main benefits of the OpenGL2 backend?<span class="HOEnZb"><font color="#888888"><br><br></font></span></div><span class="HOEnZb"><font color="#888888"><div>Elvis<br> <br></div></font></span><span class=""><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><span><font color="#888888"><br clear="all"><div><div data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"></div></div></div></div></div></div></div></div></div></div></div></div></div>
<div style="font-family:verdana,sans-serif;font-size:small;color:rgb(11,83,148);display:inline">Sankhesh</div><br><br></font></span><div class="gmail_quote"><div><div>On Wed, Jun 29, 2016 at 10:22 AM, Elvis Stansvik <span dir="ltr"><<a href="mailto:elvis.stansvik@orexplore.com" target="_blank">elvis.stansvik@orexplore.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div dir="ltr"><div><div><div><div><div><div><div><div><div><div>Hi,<br><br></div>I'm building a custom Ubuntu package of VTK-7.0.0 at this PPA:<br><br> <a href="https://launchpad.net/~elvstone/+archive/ubuntu/vtk7" target="_blank">https://launchpad.net/~elvstone/+archive/ubuntu/vtk7</a><br><br></div>the full build log is at:<br><br> <a href="https://launchpadlibrarian.net/261625779/buildlog_ubuntu-xenial-amd64.vtk7_7.0.0-0ubuntu2_BUILDING.txt.gz" target="_blank">https://launchpadlibrarian.net/261625779/buildlog_ubuntu-xenial-amd64.vtk7_7.0.0-0ubuntu2_BUILDING.txt.gz</a><br><br></div>I only recently discovered that the vtkGUISupportQtOpenGL module was not included.<br><br></div>Anyone know how I can deduce from the build log why it wasn't built?<br><br></div>The only relevant message I could find in the CMake output is:<br><br> -- Group Qt modules: vtkRenderingQt;vtkGUISupportQtSQL;vtkGUISupportQt;vtkViewsQt<br><br></div>But I can't find anything stating the reason for vtkGUISupportQtOpenGL not being built.<br><br></div>The build slave has libqt5opengl5 and libqt5opengl5-dev installed (search for "Setting up libqt5opengl5" in the build log linked above).<br><br></div>Do I have to specify something more than -DVTK_Group_Qt=ON and -DVTK_QT_VERSION=5 to get this module?<br><br></div>Thanks in advance,<br></div>Elvis<br></div>
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