[vtkusers] how to fix this problem:Extension GL_VERSION_1_2 could not be loaded

[Doug Hoppes]

For us, we see the problem on the NVidia 9800 GT with the latest drivers from NVidia.

From: Aashish Chaudhary [mailto:aashish.chaudhary at kitware.com]
Sent: Thursday, November 14, 2013 9:46 AM
To: Doug Hoppes
Cc: vtkusers at vtk.org
Subject: Re: [vtkusers] how to fix this problem:Extension GL_VERSION_1_2 could not be loaded


On Thu, Nov 14, 2013 at 9:28 AM, Doug Hoppes <dhoppes at mbfbioscience.com<mailto:dhoppes at mbfbioscience.com>> wrote:
Hi... This is Doug.  Just wanted to chime in on this.

We have the same issue and we're doing volume rendering.

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:

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
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.

Can you tell us about your driver version and the card?

We also seem to have a number of other issues with the NVidia graphics card (out of memory, lines on the image, etc).

That sounds like a volume rendering issue. Create a new thread for this please.

- Aashish

Doug

From: vtkusers-bounces at vtk.org<mailto:vtkusers-bounces at vtk.org> [mailto:vtkusers-bounces at vtk.org<mailto:vtkusers-bounces at vtk.org>] On Behalf Of Aashish Chaudhary
Sent: Thursday, November 14, 2013 9:26 AM
To: Maarten Beek
Cc: vtkusers; yas ---
Subject: Re: [vtkusers] how to fix this problem:Extension GL_VERSION_1_2 could not be loaded

Also,

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.

- Aashish


On Thu, Nov 14, 2013 at 9:20 AM, Aashish Chaudhary <aashish.chaudhary at kitware.com<mailto:aashish.chaudhary at kitware.com>> wrote:
On Thu, Nov 14, 2013 at 9:08 AM, Maarten Beek <beekmaarten at yahoo.com<mailto:beekmaarten at yahoo.com>> wrote:
Same problem here.

VTK 6.0.0
Nividia GeForce GT 630  (with newest driver (version 331.65, released 7/Nov/13) supposedly supporting OpenGL 4.4).

I see. Ok, I think I know where its coming from.

Quick question: How it affects your program? Is it just the message or or a real problem for you?

- Aashish




On Tuesday, November 5, 2013 6:17:23 PM, Aashish Chaudhary <aashish.chaudhary at kitware.com<mailto:aashish.chaudhary at kitware.com>> wrote:
Its better to provide complete information. What are you trying to accomplish in the code? What is your hardware / software (VTK version)

Thanks,


On Tue, Nov 5, 2013 at 5:46 PM, yas --- <yas2349 at gmail.com<mailto:yas2349 at gmail.com>> wrote:
Hello
When I run my code ,this error is happen!!

" Error In D:\VTK\Rendering\vtkOpenGLExtensionManager.cxx, line 393
vtkOpenGLExtensionManager (042B72A0): Extension GL_VERSION_1_2 could
not be loaded
"
How to fix this problem?

Thanks a lot!!
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--
| Aashish Chaudhary
| R&D Engineer
| Kitware Inc.
| www.kitware.com<http://www.kitware.com/>

_______________________________________________
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--
| Aashish Chaudhary
| R&D Engineer
| Kitware Inc.
| www.kitware.com<http://www.kitware.com>



--
| Aashish Chaudhary
| R&D Engineer
| Kitware Inc.
| www.kitware.com<http://www.kitware.com>

_______________________________________________
Powered by www.kitware.com<http://www.kitware.com>

Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html

Please keep messages on-topic and check the VTK FAQ at: http://www.vtk.org/Wiki/VTK_FAQ

Follow this link to subscribe/unsubscribe:
http://www.vtk.org/mailman/listinfo/vtkusers



--
| Aashish Chaudhary
| R&D Engineer
| Kitware Inc.
| www.kitware.com<http://www.kitware.com>
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