Thu, 08/20/2020 - 16:37
Forums:
Hello
My platform is MS win7 64-bt, VS2015 VC14, .Net v4.5.2 and my application can work.
But it gets an error when it's run in win10 system and the error message is below
TKOpenGL | Type: Error | ID: 0 | Serverity: High | Message:
OpenGL context reports version 4.6 but does not export required functions for 4.5 (glGetnCompressedTexImage)
Please report this issue to OpenGL driver vendor 'intel'
Anyone can help ?
Sun, 08/23/2020 - 15:25
The message indicates that your graphic vendor (Intel) has shipped a broken OpenGL driver, so that message suggests asking the vendor for a driver update fixing the problem.
Mon, 11/02/2020 - 12:57
Thanks, I solve it via re-install OS.
Thu, 08/12/2021 - 11:32
The problem is still in.
"OpenGL context reports version 4.6 but does not export required functions for 4.5 (glGetnTexImage)"
The latest intel drivers (July 2021) have been installed. I think it's bad idea to expect something from intel.
But the DRAW utility is ok, so could I switch off all the checkings OR use OpenGL version 4.4 without rebuilding OCCT?
Thu, 08/12/2021 - 15:58
Well, I would say that pushing Intel to fix their driver would be the best approach. AMD Radeon drivers have the same bug in their Crimson drivers, which has been fixed a long time ago.
You may specify OpenGl_Caps properties to contextMajorVersionUpper=4 and contextMinorVersionUpper=4, which would replace an error message with a warning.
Thu, 08/12/2021 - 21:28
Thanks a lot Kirill, I'm ready to join the collective bug request.
Thu, 08/12/2021 - 23:24
I don't know where to report Intel driver bugs. All my previous attempts (like this) have been ignored, and I don't think they have a public Bugtracker.
Fri, 08/13/2021 - 09:40
Done! And I encourage everyone to do the same.
Sun, 10/17/2021 - 13:24
I am also facing same kind of issue with OpenGL. I put a post in Intel community forum. (https://community.intel.com/t5/Graphics/OpenGL-error/td-p/1322594). If anybody find a solution, please reply here.
Sun, 10/17/2021 - 20:16
Vinojan, I don't think that you have the same problem discussed on this thread. The error message about OpenGL 4.6 on Intel drivers is a non-blocking one - it doesn't prevent viewer to work, while your description tells that you have problems with starting application.
So it should have another issue to solve - consider starting a new topic with more detailed description of what you are trying to do.
Thu, 10/28/2021 - 16:40
Kirill, Thank you for your quick response. I created a new topic (https://dev.opencascade.org/content/occt-750-build-3d-viewer-not-showing...) with detailed description.
Thanks and Regards.