Sadly, I am using VS 2008 on Windows and direct rendering.<br>Does someone know any other possible reason for vtkgl::GenBuffers == NULL ?<br><br>Regards,<br>Oliver<br><br><div class="gmail_quote">2010/5/27 Francois Bertel <span dir="ltr"><<a href="mailto:francois.bertel@kitware.com">francois.bertel@kitware.com</a>></span><br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Are you using indirect rendering mode on Linux? If so, try VTK git, it<br>
should be fixed (a workaround for a nVidia bug in indirect rendering<br>
mode on Linux)<br>
<div><div></div><div class="h5"><br>
On Thu, May 27, 2010 at 6:51 AM, Oliver Kania<br>
<<a href="mailto:kania.oliver@googlemail.com">kania.oliver@googlemail.com</a>> wrote:<br>
> In a previous post, I said that my App crashes with VTK 5.6 but not 5.2<br>
> because GenBuffers == NULL during Interactor::Render.<br>
> I found a post in the archive that says GenBuffers is NULL if the OpenGl<br>
> Version is < 1.5 and<br>
> a certain extension is not loaded.<br>
> How do I query the OpenGL version which is used by VTK and how do I change<br>
> it ?<br>
> However, my driver supports GL > 2.0, and I guess VTK does load the best<br>
> possible version.<br>
> What other reason could there be for GenBuffers == NULL ?<br>
> Is it possible to avoid usage of this function by VTK ?<br>
><br>
> Best Regards, Oliver<br>
><br>
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