I couldn’t build the 3dslicer project because 8.1.2 only has vtkGUISupportQtOpenGL when VTK_RENDERING_BACKEND=OpenGL, which is limiting in other respects. Also see here: http://vtk.1045678.n5.nabble.com/Find-reason-for-exclusion-of-vtkGUISupportQtOpenGL-in-build-output-td5738976.html

Is vtkGUISupportQtOpenGL available in 8.2.0 with VTK_RENDERING_BACKEND=OpenGL2 ?

yurivict (Yuri) November 23, 2018, 1:12am 5

What you recommend would only work on Linux, because VTK doesn’t build on BSDs without patches.
I want to create the FreeBSD port for slicer.

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