<div dir="ltr">Not really which is why there is OpenGL2. The old OpenGL backend supports all the way back to OpenGL 1.0. The problem is that most modern rendering techniques will not work on OpenGL 1.0. <div><br></div><div>Keeping OpenGL (or extending it) was resulting more and more in a situation where we had to say things like "Well LIC works, but only on these graphics cards" As more modern features were added it was getting to the point where what worked on your computer was in no way assured to work on another computer.</div><div><br></div><div>OpenGL2 moves the baseline to OpenGL version 3.2 which is about six or seven years old but has a lot of features that support modern graphics programming. Now we can say if it runs at all, every feature should work. This creates a different problem which we have been working on to make sure all platforms have an option to support OpenGL 3.2. For OSX it is easy as Apple already guarantees OpenGL 3.2 on any OS from the past many years. For linux and windows it is trickier. Often updating your driver or Mesa version solves the issue. Sometimes not.</div><div><br></div><div>Mesa will work on both platforms but currently we (and the operating systems) do not have a good approach to try for hardware OpenGL 3.2 and if not available, fall back to Mesa. It is something we think about regularly though and we have some hopes that in the near future a more general virtual dispatch mechanism will be implemented to solve this issue. </div><div><br></div><div>Thanks</div><div>Ken</div><div><br></div><div><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Jul 20, 2017 at 8:20 AM, Satwik <span dir="ltr"><<a href="mailto:satwik.k8@gmail.com" target="_blank">satwik.k8@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Is there anyway to increase the performance for VTK-7.1 configured OpenGL.<br>
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Regards,<br>
Satwik<br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div>Ken Martin PhD<div>Distinguished Engineer<br><span style="font-size:12.8px">Kitware Inc.</span><br></div><div>28 Corporate Drive<br>Clifton Park NY 12065<br><div><br></div><div><span style="font-size:10pt;font-family:Tahoma,sans-serif">This communication,
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