<div dir="ltr">BTW, I took a look but I do not see any way for a third party VTK or PV application that would not use CMake machinery (and use VTK_OPENGL_BACKEND) to know if the VTK it uses is based on OpenGL backend 1 or 2.<br>VTK_OPENGL2 is a compiler definition provided to build VTK or PV but, as there is no global VTK configuration header, shouldn't we add a function in vtkRenderWindow to return the version of the backend it is based on?<br><div class="gmail_extra"><br clear="all"><div><div><div dir="ltr"><b>Joachim Pouderoux</b><br><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><font size="1"><i>PhD, Technical Expert</i></font><br><b><font size="1"><a href="http://www.kitware.fr" target="_blank">Kitware SAS</a></font></b><br></blockquote>
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<br><div class="gmail_quote">2015-12-08 19:58 GMT+01:00 Ben Boeckel <span dir="ltr"><<a href="mailto:ben.boeckel@kitware.com" target="_blank">ben.boeckel@kitware.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span>On Mon, Dec 07, 2015 at 14:49:51 -0500, Tim Thirion wrote:<br>
> I'm looking to provide run-time identification of the current OpenGL<br>
> backend in use. Some questions:<br>
><br>
> 1. VTK #defines VTK_OPENGL2, but ParaView #defines VTKGL2. Is there a<br>
> particular reason we have both?<br>
<br>
</span>VTK used to have both. VTKGL2 should be migrated to VTK_OPENGL2 (as VTK<br>
did).<br>
<span><br>
> 2. Is there an ideal place to define such a constant? Perhaps on the render<br>
> window?<br>
<br>
</span>The About dialog has a list of information already (versions of Python,<br>
matplotlib, numpy, Qt, etc.).<br>
<br>
--Ben<br>
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