[vtkusers] Reply : Why could vtkgl::GenBuffers == NULL ?

[Francois Bertel]

Can you submit an experimental build on VTK, please?

Just type this (-C Debug is important on windows):

$ ctest -D Experimental -C Debug

Once the build is submitted, let me know about the name of your
machine that shows on:
http://www.cdash.org/CDash/index.php?project=VTK


PS: explanation about -C Debug.

[

On windows, if you just type
$ ctest -D Experimental
you could have the following error:

Cannot find file: C:/VTK/BIN/bin/Release/DartConfiguration.tcl

it is probably because you build VTK in Debug mode. For
multi-configuration generators such as visual studio, it assumes that
you have built your project for the Release configuration. Add -C
Debug to explicitly asks ctest to test the Debug tree, like this:

ctest -D Experimental -C Debug

]

On Thu, May 27, 2010 at 1:22 PM, Francois Bertel
<francois.bertel at kitware.com> wrote:
> Are you using vtkgl::GenBuffers in you own code or does it happen in a
> vtk class?
>
> On Thu, May 27, 2010 at 11:17 AM, Oliver Kania
> <kania.oliver at googlemail.com> wrote:
>> Sadly, I am using VS 2008 on Windows and direct rendering.
>> Does someone know any other possible reason for vtkgl::GenBuffers == NULL ?
>>
>> Regards,
>> Oliver
>>
>> 2010/5/27 Francois Bertel <francois.bertel at kitware.com>
>>>
>>> Are you using indirect rendering mode on Linux? If so, try VTK git, it
>>> should be fixed (a workaround for a nVidia bug in indirect rendering
>>> mode on Linux)
>>>
>>> On Thu, May 27, 2010 at 6:51 AM, Oliver Kania
>>> <kania.oliver at googlemail.com> wrote:
>>> > In a previous post, I said that my App crashes with VTK 5.6 but not 5.2
>>> > because GenBuffers == NULL during Interactor::Render.
>>> > I found a post in the archive that says GenBuffers is NULL if the OpenGl
>>> > Version is < 1.5 and
>>> > a certain extension is not loaded.
>>> > How do I query the OpenGL version which is used by VTK and how do I
>>> > change
>>> > it ?
>>> > However, my driver supports GL > 2.0, and I guess VTK does load the best
>>> > possible version.
>>> > What other reason could there be for GenBuffers == NULL ?
>>> > Is it possible to avoid usage of this function by VTK ?
>>> >
>>> > Best Regards, Oliver
>>> >
>>> > _______________________________________________
>>> > Powered by www.kitware.com
>>> >
>>> > Visit other Kitware open-source projects at
>>> > http://www.kitware.com/opensource/opensource.html
>>> >
>>> > Please keep messages on-topic and check the VTK FAQ at:
>>> > http://www.vtk.org/Wiki/VTK_FAQ
>>> >
>>> > Follow this link to subscribe/unsubscribe:
>>> > http://www.vtk.org/mailman/listinfo/vtkusers
>>> >
>>> >
>>>
>>>
>>>
>>> --
>>> François Bertel, PhD  | Kitware Inc. Suite 204
>>> 1 (518) 371 3971 x113 | 28 Corporate Drive
>>>                      | Clifton Park NY 12065, USA
>>> _______________________________________________
>>> Powered by www.kitware.com
>>>
>>> Visit other Kitware open-source projects at
>>> http://www.kitware.com/opensource/opensource.html
>>>
>>> Please keep messages on-topic and check the VTK FAQ at:
>>> http://www.vtk.org/Wiki/VTK_FAQ
>>>
>>> Follow this link to subscribe/unsubscribe:
>>> http://www.vtk.org/mailman/listinfo/vtkusers
>>
>>
>
>
>
> --
> François Bertel, PhD  | Kitware Inc. Suite 204
> 1 (518) 371 3971 x113 | 28 Corporate Drive
>                      | Clifton Park NY 12065, USA
>



-- 
François Bertel, PhD  | Kitware Inc. Suite 204
1 (518) 371 3971 x113 | 28 Corporate Drive
                      | Clifton Park NY 12065, USA