<div dir="ltr"><div>If you get the master branch, it includes this patch which might be related:</div><a href="https://gitlab.kitware.com/vtk/vtk/commit/8d0daf13">https://gitlab.kitware.com/vtk/vtk/commit/8d0daf13</a><br><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Feb 22, 2016 at 12:33 PM, Matthias Blaicher <span dir="ltr"><<a href="mailto:matthias@blaicher.com" target="_blank">matthias@blaicher.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi David,<br>
<br>
I guess you are right, it looks like this is the issue. According to<br>
OpenGL Extensions Viewer, the card exposes OpenGL 4.<br>
<br>
If I understood it correctly, the problem seems to be that gpu_shader4<br>
is not exposed in the 2.1 context. And 3.2 is tested but fails (have to<br>
check that for my card).<br>
<br>
Is there any patch, which would try a 3.1 context too? I've seen some<br>
commits in master (e.g. ca65662fa "Merge topic<br>
'try_more_recent_opengl_add_getversion'"). I'll give the master branch a<br>
spin and report back.<br>
<br>
Best,<br>
<br>
Matthias<br>
</blockquote></div><br></div></div>