[vtkusers] GPURayCast and Texture3D volume mappers fail to render

[burlen]

in your vtk build dir, what does the output of

    $ ctest -R LoadOpenGL --verbose | grep GL_

say? If it's not reporting the expected versions then you could verify 
which driver VTK using with:

    $ ldd bin/vtkRenderingVolumeCxxTests | grep GL

you may try this also on your app to verify. Do VTK's tests have the 
same issue?

    $ ctest -R GPURay --verbose

if none of this helps, would you be willing to work with the development 
version of VTK? it will be easier to find and fix the bug.

Burlen

On 09/10/2013 07:21 PM, Miro Drahos wrote:
> Hi all,
> I am having an issue with volume mappers and hope someone can provide 
> some constructive feedback.
> When trying to use vtkGPUVolumeRayCastMapper rendering fails with the 
> message:
> ERROR: In 
> /home/miro/BUILDS/VTK5.10.1/VolumeRendering/vtkOpenGLGPUVolumeRayCastMapper.cxx, 
> line 4011
> vtkOpenGLGPUVolumeRayCastMapper (0x12e15ce0): Rendering failed because 
> the following OpenGL extensions are required but not supported:  
> OpenGL 1.3 is required but not supported
>
> If I run
> glGetString(GL_VERSION)
> I get the correct output string:
> 4.3.0 NVIDIA 310.44
>
> and yet the 
> vtkOpenGLExtensionManager::ExtensionSupported("GL_VERSION_1_3") 
> somehow returns 0.
>
> I am using vtk 5.10, my graphics card is NVIDIA GT520, using NVIDIA 
> propriatory driver 310.44 on Linux Mint 15 (same thing with 
> open-source nouveau driver).
> Some terminal output that may be relevant:
>
> $ glewinfo   | grep GL_VER
> GL_VERSION_1_1: OK
> GL_VERSION_1_2: OK
> GL_VERSION_1_2_1: OK
> GL_VERSION_1_3: OK
> GL_VERSION_1_4: OK
> GL_VERSION_1_5: OK
> GL_VERSION_2_0: OK
> GL_VERSION_2_1: OK
> GL_VERSION_3_0: OK
> GL_VERSION_3_1: OK
> GL_VERSION_3_2: OK
> GL_VERSION_3_3: OK
> GL_VERSION_4_0: OK
> GL_VERSION_4_1: OK
> GL_VERSION_4_2: OK
>
> $ inxi -Gx
> Graphics:  Card: NVIDIA GF119 [GeForce GT 520] bus-ID: 01:00.0
>            X.Org: 1.13.3 drivers: nvidia (unloaded: 
> fbdev,vesa,nouveau) Resolution: 1920x1080 at 60.0hz, 1920x1080 at 60.0hz
>            GLX Renderer: GeForce GT 520/PCIe/SSE2 GLX Version: 4.3.0 
> NVIDIA 310.44 Direct Rendering: Yes
>
>
> More puzzling yet it gets when I try to use vtkVolumeMapperTexture3D, 
> I get
> ERROR: In 
> /home/miro/BUILDS/VTK5.10.1/VolumeRendering/vtkOpenGLGPUVolumeRayCastMapper.cxx, 
> line 4011
> vtkOpenGLGPUVolumeRayCastMapper (0x12e15ce0): Rendering failed because 
> the following OpenGL extensions are required but not supported:
>
> With no list of problem extensions...
>
> Thank you very much for any input on this!
>
> ------------------------------------------------------------------------
> Miroslav Drahos(
> software engineer
> <http://www.robodoc.com>
> *Curexo Technology Corporation*
> 47320 Mission Falls Ct
> Fremont CA, 94539
> Tel: (510) 249-2300 x2372
> Fax: (510) 249-2396
> www.robodoc.com <http://www.robodoc.com>
>
>
>
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