<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12pt"><div id="yiv3655697610"><div><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12pt;">I'm out of the loop for now; found out that Hyper-V only supports OpenGL 1.1.<br><br>Doesn't solve my problem, but it's not VTK... :-(<br><br>Maarten<br clear="none"><div id="yiv3655697610yui_3_13_0_7_1384437632739_129"><span></span></div><div class="yiv3655697610yahoo_quoted" id="yiv3655697610yui_3_13_0_7_1384437632739_131" style="display: block;"> <br clear="none"> <br clear="none"> <div class="yiv3655697610yui_3_13_0_1_1384437632739_15610" style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12pt;"> <div class="yiv3655697610yui_3_13_0_1_1384437632739_15611"
style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12pt;"> <div class="yiv3655697610yqt5262887204" id="yiv3655697610yqt90233"><div dir="ltr"> <font face="Arial" size="2"> On Thursday, November 14, 2013 9:53:00 AM, Doug Hoppes <dhoppes@mbfbioscience.com> wrote:<br clear="none"> </font> </div> <div class="yiv3655697610y_msg_container"><div id="yiv3655697610"><style>#yiv3655697610
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<div class="yiv3655697610MsoNormal"><span style="font-size:11.0pt;">For us, we see the problem on the NVidia 9800 GT with the latest drivers from NVidia.</span></div>
<div class="yiv3655697610MsoNormal"><span style="font-size:11.0pt;"> </span></div>
<div class="yiv3655697610yqt5213032974" id="yiv3655697610yqt77081"><div class="yiv3655697610MsoNormal"><b><span style="font-size:10.0pt;">From:</span></b><span style="font-size:10.0pt;"> Aashish Chaudhary [mailto:aashish.chaudhary@kitware.com]
<br clear="none">
<b>Sent:</b> Thursday, November 14, 2013 9:46 AM<br clear="none">
<b>To:</b> Doug Hoppes<br clear="none">
<b>Cc:</b> vtkusers@vtk.org<br clear="none">
<b>Subject:</b> Re: [vtkusers] how to fix this problem:Extension GL_VERSION_1_2 could not be loaded</span></div>
<div class="yiv3655697610MsoNormal"> </div>
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<div class="yiv3655697610MsoNormal"> </div>
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<div class="yiv3655697610MsoNormal">On Thu, Nov 14, 2013 at 9:28 AM, Doug Hoppes <<a rel="nofollow" shape="rect" ymailto="mailto:dhoppes@mbfbioscience.com" target="_blank" href="mailto:dhoppes@mbfbioscience.com">dhoppes@mbfbioscience.com</a>> wrote:</div>
<div>
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<div class="yiv3655697610MsoNormal" style=""><span style="font-size:11.0pt;">Hi… This is Doug. Just wanted to chime in on this.</span></div>
<div class="yiv3655697610MsoNormal" style=""><span style="font-size:11.0pt;"> </span></div>
<div class="yiv3655697610MsoNormal" style=""><span style="font-size:11.0pt;">We have the same issue and we’re doing volume rendering.
</span></div>
</div>
</div>
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<div class="yiv3655697610MsoNormal"> </div>
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<div>
<div class="yiv3655697610MsoNormal">Yes, I expected that to happen. In fact for the newer drivers, it will happen for both geometry rendering and volume rendering. I think the fundamental problem is this: </div>
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<div class="yiv3655697610MsoNormal"> </div>
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<div class="yiv3655697610MsoNormal">We look for the GL version and then assume certain things such as multi texture is supported or not. My quick thought on this was that we need to be looking for the </div>
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<div>
<div class="yiv3655697610MsoNormal">extensions directly and not the GL versions since GL versions could be mis-leading. We will see if we can push a fix for this sometime soon. </div>
</div>
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<div class="yiv3655697610MsoNormal"> </div>
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<div>
<div class="yiv3655697610MsoNormal">Can you tell us about your driver version and the card?</div>
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<div class="yiv3655697610MsoNormal" style=""><span style="font-size:11.0pt;">We also seem to have a number of other issues with the NVidia graphics card (out of memory, lines
on the image, etc).</span></div>
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</blockquote>
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<div class="yiv3655697610MsoNormal"> </div>
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<div>
<div class="yiv3655697610MsoNormal">That sounds like a volume rendering issue. Create a new thread for this please. </div>
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<div class="yiv3655697610MsoNormal"> </div>
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<div>
<div class="yiv3655697610MsoNormal">- Aashish </div>
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<div class="yiv3655697610MsoNormal" style=""><span style="font-size:11.0pt;"> </span></div>
<div class="yiv3655697610MsoNormal" style=""><span style="font-size:11.0pt;">Doug</span></div>
<div class="yiv3655697610MsoNormal" style=""><span style="font-size:11.0pt;"> </span></div>
<div class="yiv3655697610MsoNormal" style=""><b><span style="font-size:10.0pt;">From:</span></b><span style="font-size:10.0pt;">
<a rel="nofollow" shape="rect" ymailto="mailto:vtkusers-bounces@vtk.org" target="_blank" href="mailto:vtkusers-bounces@vtk.org">vtkusers-bounces@vtk.org</a> [mailto:<a rel="nofollow" shape="rect" ymailto="mailto:vtkusers-bounces@vtk.org" target="_blank" href="mailto:vtkusers-bounces@vtk.org">vtkusers-bounces@vtk.org</a>]
<b>On Behalf Of </b>Aashish Chaudhary<br clear="none">
<b>Sent:</b> Thursday, November 14, 2013 9:26 AM<br clear="none">
<b>To:</b> Maarten Beek<br clear="none">
<b>Cc:</b> vtkusers; yas ---<br clear="none">
<b>Subject:</b> Re: [vtkusers] how to fix this problem:Extension GL_VERSION_1_2 could not be loaded</span></div>
<div>
<div>
<div class="yiv3655697610MsoNormal" style=""> </div>
<div>
<div class="yiv3655697610MsoNormal" style="">Also,</div>
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<div class="yiv3655697610MsoNormal" style=""> </div>
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<div>
<div class="yiv3655697610MsoNormal" style="">I need to know if your application is doing volume rendering or geometry rendering. The problem is that the code for checking extensions is not updated and not quite right either. </div>
</div>
<div>
<div class="yiv3655697610MsoNormal" style=""> </div>
</div>
<div>
<div class="yiv3655697610MsoNormal" style="">- Aashish</div>
</div>
<div>
<div class="yiv3655697610MsoNormal" style=""> </div>
</div>
</div>
<div>
<div class="yiv3655697610MsoNormal" style="margin-bottom:12.0pt;"> </div>
<div>
<div class="yiv3655697610MsoNormal" style="">On Thu, Nov 14, 2013 at 9:20 AM, Aashish Chaudhary <<a rel="nofollow" shape="rect" ymailto="mailto:aashish.chaudhary@kitware.com" target="_blank" href="mailto:aashish.chaudhary@kitware.com">aashish.chaudhary@kitware.com</a>> wrote:</div>
<div>
<div>
<div class="yiv3655697610MsoNormal" style="">On Thu, Nov 14, 2013 at 9:08 AM, Maarten Beek <<a rel="nofollow" shape="rect" ymailto="mailto:beekmaarten@yahoo.com" target="_blank" href="mailto:beekmaarten@yahoo.com">beekmaarten@yahoo.com</a>> wrote:</div>
</div>
<div>
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<div>
<div>
<div class="yiv3655697610MsoNormal" style=""><span style="">Same problem here.<br clear="none">
<br clear="none">
VTK 6.0.0<br clear="none">
Nividia GeForce GT 630 (with newest driver (version 331.65, released 7/Nov/13) supposedly supporting OpenGL 4.4).</span></div>
</div>
</div>
</blockquote>
<div>
<div class="yiv3655697610MsoNormal" style=""> </div>
</div>
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<div>
<div class="yiv3655697610MsoNormal" style="">I see. Ok, I think I know where its coming from. </div>
</div>
<div>
<div class="yiv3655697610MsoNormal" style=""> </div>
</div>
<div>
<div class="yiv3655697610MsoNormal" style="">Quick question: How it affects your program? Is it just the message or or a real problem for you? </div>
</div>
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<div class="yiv3655697610MsoNormal" style=""><span style="color:#888888;"> </span></div>
</div>
<div>
<div class="yiv3655697610MsoNormal" style=""><span style="color:#888888;">- Aashish</span></div>
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<div class="yiv3655697610MsoNormal" style=""><span style=""> </span></div>
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<div class="yiv3655697610MsoNormal" style=""><span style=""> </span></div>
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<div class="yiv3655697610MsoNormal" style="margin-bottom:12.0pt;"><span style=""> </span></div>
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<div>
<div class="yiv3655697610MsoNormal" style=""><span style="">On Tuesday, November 5, 2013 6:17:23 PM, Aashish Chaudhary <<a rel="nofollow" shape="rect" ymailto="mailto:aashish.chaudhary@kitware.com" target="_blank" href="mailto:aashish.chaudhary@kitware.com">aashish.chaudhary@kitware.com</a>>
wrote:</span></div>
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<div>
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<div>
<div class="yiv3655697610MsoNormal" style=""><span style="">Its better to provide complete information. What are you trying to accomplish in the code? What is your hardware / software (VTK
version) </span></div>
<div>
<div class="yiv3655697610MsoNormal" style=""><span style=""> </span></div>
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<div class="yiv3655697610MsoNormal" style=""><span style="">Thanks,</span></div>
</div>
<div>
<div class="yiv3655697610MsoNormal" style=""><span style=""> </span></div>
</div>
</div>
<div>
<div class="yiv3655697610MsoNormal" style="margin-bottom:12.0pt;"><span style=""> </span></div>
<div>
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<div class="yiv3655697610MsoNormal" style=""><span style="">On Tue, Nov 5, 2013 at 5:46 PM, yas --- <<a rel="nofollow" shape="rect" ymailto="mailto:yas2349@gmail.com" target="_blank" href="mailto:yas2349@gmail.com">yas2349@gmail.com</a>> wrote:</span></div>
<div class="yiv3655697610MsoNormal" style=""><span style="">Hello<br clear="none">
When I run my code ,this error is happen!!<br clear="none">
<br clear="none">
" Error In D:\VTK\Rendering\vtkOpenGLExtensionManager.cxx, line 393<br clear="none">
vtkOpenGLExtensionManager (042B72A0): Extension GL_VERSION_1_2 could<br clear="none">
not be loaded<br clear="none">
"<br clear="none">
How to fix this problem?<br clear="none">
<br clear="none">
Thanks a lot!!<br clear="none">
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