<div dir="ltr">Ahh I just saw your screenshots indicating Intel 2500. Maybe the master changes will work on that. I believe we have been having some hiccups with the older intel GPUs. I'd like to get them iron out.<div><br></div><div>Ken</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Feb 22, 2016 at 9:59 PM, Ken Martin <span dir="ltr"><<a href="mailto:ken.martin@kitware.com" target="_blank">ken.martin@kitware.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">If your card supports OpenGL 4 then I would think it would also provide a 3.2 context. I'm not aware of cards that support 4.0 but would not return a 3.2 context when requested. If you check out and build VTK master you could try running<div><br></div><div>ctest -R VBOPLY -VV</div><div><br></div><div>and</div><div><br></div><div>ctest -R Apple -VV</div><div><br></div><div>the output of those two tests can be helpful in debugging these issues. Also maybe your system has two GPUs? Like intel on chip plus a dedicated GPU and somehow you are not getting the dedicated GPU maybe? Just some ideas.</div><div><br></div><div><br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Feb 22, 2016 at 3:03 PM, David Gobbi <span dir="ltr"><<a href="mailto:david.gobbi@gmail.com" target="_blank">david.gobbi@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><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" target="_blank">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>
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<br></blockquote></div><span class="HOEnZb"><font color="#888888"><br><br clear="all"><div><br></div>-- <br><div>Ken Martin PhD<div>Chairman & CFO<br>Kitware Inc.<br>28 Corporate Drive<br>Clifton Park NY 12065<br><a href="tel:518%20371%203971" value="+15183713971" target="_blank">518 371 3971</a><div><br></div><div><span style="font-size:10pt;font-family:Tahoma,sans-serif">This communication,
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature">Ken Martin PhD<div>Chairman & CFO<br>Kitware Inc.<br>28 Corporate Drive<br>Clifton Park NY 12065<br>518 371 3971<div><br></div><div><span style="font-size:10pt;font-family:Tahoma,sans-serif">This communication,
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