[vtk-developers] OSMesa regression

[Dan Lipsa]

On Tue, Sep 8, 2015 at 1:27 PM, Dan Lipsa <dan.lipsa at kitware.com> wrote:

> Hi Bill,
> I am not sure why you got the link error with your initial combination of
> parameters.
> VTK_USE_X=ON overrides VTK_OPENGL_HAS_OSMESA=ON so the QT modules should
> have linked fine. They do link on my machine. Do you have a CMakeCache.txt?
> In that case, there is no offscreen rendering though.
>

Actually, I misstated - I did not see the Qt modules linking. I seen the
second link error I mentioned, the one in Rendering/OpenGL. After I fixed
that the Qt modules linked fine. So do you mind trying the branch in my
merge request to see if that fixes the problems you seen. Thanks,
Dan





>
> I did get the link error for VTK_OPENGL_HAS_OSMESA=ON and VTK_USE_X=OFF as
> QVTKWidget needs X. I have a merge request that excludes Qt modules
> if VTK_OPENGL_HAS_OSMESA=ON
>
> I also got a link error for VTK_OPENGL_HAS_OSMESA=ON and VTK_USE_X=ON
> because some cxx files in Rendering/OpenGL used code ifdef
> with VTK_OPENGL_HAS_OSMESA instead of VTK_USE_OSMESA.
>
> The merge request that fixes these problems is:
>
> https://gitlab.kitware.com/vtk/vtk/merge_requests/637
>
> All these were parameter combinations not test by our dashboards. When we
> wanted OSMESA we did VTK_OPENGL_HAS_OSMESA=ON and VTK_USE_X=OFF and we
> disabled the Qt modules.
>
> Dan
>
>
> On Mon, Sep 7, 2015 at 4:01 PM, Dan Lipsa <dan.lipsa at kitware.com> wrote:
>
>> Hi Bill,
>> I'll look into it.
>>
>> Dan
>>
>>
>> On Mon, Sep 7, 2015 at 2:43 PM, Bill Lorensen <bill.lorensen at gmail.com>
>> wrote:
>>
>>> More information...
>>>
>>> This build uses off screen rendering with os mesa. The system has qt
>>> installed.
>>>
>>> Originally I had these settings. Worked OK until the git bisect commit.
>>> VTK_BUILD_ALL_MODULES:BOOL=ON
>>> VTK_USE_OFFSCREEN:BOOL=ON
>>> VTK_OPENGL_HAS_OSMESA:BOOL=ON
>>> VTK_USE_X:BOOL=ON
>>>
>>> Then I changed to the following:
>>> VTK_BUILD_ALL_MODULES:BOOL=OFF
>>> VTK_USE_OFFSCREEN:BOOL=ON
>>> VTK_OPENGL_HAS_OSMESA:BOOL=ON
>>> VTK_USE_X:BOOL=OFF
>>> VTK_Group_Imaging:BOOL=ON
>>> VTK_Group_Qt:BOOL=OFF
>>> VTK_Group_Rendering:BOOL=ON
>>> VTK_Group_StandAlone:BOOL=ON
>>> VTK_Group_Views:BOOL=ON
>>>
>>> So the referenced commit is still a regression, but I can workaround it.
>>>
>>> Bill
>>>
>>>
>>>
>>>
>>> On Sat, Sep 5, 2015 at 1:11 PM, Bill Lorensen <bill.lorensen at gmail.com>
>>> wrote:
>>> > Folks,
>>> >
>>> > git bisect identified this commit
>>> > # first bad commit: [f09903e468b60c20a1e30cb665a5a72a8ab3140f] COMP:
>>> > Add logic to selectively use OpenGL or OSMesa.
>>> > https://gitlab.kitware.com/vtk/vtk/merge_requests/427
>>> >
>>> > causes these errors in my OSMesa build:
>>> > Linking CXX shared library ../../lib/libvtkGUISupportQt-6.3.so
>>> > CMakeFiles/vtkGUISupportQt.dir/QVTKWidget.cxx.o: In function
>>> > `QVTKWidget::x11_setup_window()':
>>> > /home/lorensen/ProjectsGIT/VTKGerrit/GUISupport/Qt/QVTKWidget.cxx:736:
>>> > undefined reference to `XGetWindowAttributes'
>>> > /home/lorensen/ProjectsGIT/VTKGerrit/GUISupport/Qt/QVTKWidget.cxx:740:
>>> > undefined reference to `XCreateWindow'
>>> > /home/lorensen/ProjectsGIT/VTKGerrit/GUISupport/Qt/QVTKWidget.cxx:746:
>>> > undefined reference to `XGetWMColormapWindows'
>>> > /home/lorensen/ProjectsGIT/VTKGerrit/GUISupport/Qt/QVTKWidget.cxx:750:
>>> > undefined reference to `XFree'
>>> > /home/lorensen/ProjectsGIT/VTKGerrit/GUISupport/Qt/QVTKWidget.cxx:777:
>>> > undefined reference to `XSetWMColormapWindows'
>>> > /home/lorensen/ProjectsGIT/VTKGerrit/GUISupport/Qt/QVTKWidget.cxx:780:
>>> > undefined reference to `XFree'
>>> > /home/lorensen/ProjectsGIT/VTKGerrit/GUISupport/Qt/QVTKWidget.cxx:782:
>>> > undefined reference to `XFlush'
>>> > collect2: error: ld returned 1 exit status
>>> > make[3]: *** [lib/libvtkGUISupportQt-6.3.so.1] Error 1
>>> > make[2]: *** [GUISupport/Qt/CMakeFiles/vtkGUISupportQt.dir/all] Error 2
>>> > make[1]: *** [GUISupport/Qt/CMakeFiles/vtkGUISupportQt.dir/rule] Error
>>> 2
>>> > make: *** [vtkGUISupportQt] Error 2
>>>
>>>
>>>
>>> --
>>> Unpaid intern in BillsBasement at noware dot com
>>>
>>
>>
>
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