[vtk-developers] OpenGL backend - 1.1 vs 2.0

[Ken Martin]

Yes :-) The thought was that the old backend would go away fairly quickly
and then OpenGL2 would be renamed OpenGL. I don't think we expected the old
backend to be needed this long. One of the reasons I'd like to see Mesa as
a fallback is to allow us to get rid of the old backend as at that point we
should have a solution that works on everything above a vt100 :-)

On Wed, May 10, 2017 at 9:28 AM, Ben Boeckel <ben.boeckel at kitware.com>
wrote:

> On Wed, May 10, 2017 at 03:14:44 -0700, Vladimir Engelgardt wrote:
> > Is there any workaround for this problem, i.e. detect GL version at
> runtime
> > and use 1.1 or 2.0? If no, we are going to switch for OpenGL 1.1.
>
> Note that the 1 vs. 2 meaning is a VTK-ism. The OpenGL2 backend requires
> features from OpenGL 3.2 (at least). The "2" comes from the fact that
> it's the second OpenGL backend, not the version of OpenGL.
>
> --Ben
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-- 
Ken Martin PhD
Distinguished Engineer
Kitware Inc.
28 Corporate Drive
Clifton Park NY 12065

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