[Paraview] GPU volume rendering failure on Intel HD XXXX/Iris, Windows and recent drivers

[Aashish Chaudhary]

Dear Simon,

On Fri, Jul 17, 2015 at 4:43 AM, Simon ESNEAULT <simon.esneault at gmail.com>
wrote:

> Hi All,
>
> We're experiencing GPU volume rendering failure on a lot (maybe all ?)
> Intel HD windows system with up to date drivers.
>
> This is reproducible in Paraview or with the GPURenderDemo example from
> VTK, just load a volume and try to render the volume... Here is a result
> image from paraview on a Dell Latitude E7450 (Intel HD 5500 inside), with
> GPU rendering [1] and the same volume with CPU VR rendering [2].
> Interestingly, the volume rendering used to work with drivers older or
> equal to the version 10.18.10.3496 [3]. As a work around, we ask our
> customers to downgrade their driver version to this one, and they're
> enjoying smooth GPU rendering. But this driver is quite old and does not
> support recent chipset...
>
> I've built and tested the GPURenderDemo with the brand new OpenGL2 backend
> on an affected machine and of course it does work out of the box
> (congratulations for this amazing work !).
>
Great!


> But our application is FDA/CE marked and we need to wait that this new
> backend is completely ready for prime time. So for now, we have to stick
> with VTK 6.1 ...
>

Most of the tests are passing for OpenGL2 (
https://open.cdash.org/index.php?project=VTK) on most of the dashboards
(various configurations etc) but it is a moving target just like VTK itself
is a moving target. I guess you are waiting for a VTK release that defaults
to OpenGL2 as oppose to OpenGL?

>
> Anyone has any clue ? They're some warning that pop up from paraview
> related to the extension "gl_version_1_2" that could not be loaded, not
> sure if that could be related ? Following this thread [4] and the fix
> proposed, I've tried to replace
> /*****************/
> extensions->LoadExtension("GL_VERSION_1_2")
> /*****************/
> by
> /*****************/
> extensions->LoadExtension("GL_EXT_texture3D");
> extensions->LoadExtension( "GL_ARB_texture_non_power_of_two" );
> /*****************/
> in the vtkOpenGLGPUVolumeRayCastMapper.cxx, The warning disappears but
> there is still no volume rendering (tested with GPURenderDemo). Maybe it
> needs some others extensions ?
>

Yes, there is a patch and I can send it to you. I have to talk to folks
here if we can fix the old mapper with those changes but as of now it is
not in the plan.


>
> Should I fill a bug in paraview, vtk ? Are there any plan to maintain and
> maybe fix this for the old backend ?
>

- Aashish


>
> Thanks,
> --
> ------------------------------------------------------------------
> Simon Esneault
> Rennes, France
> ------------------------------------------------------------------
>
> [1] http://picpaste.com/pics/Paraview-4-3-1-GPU-VR_fail.1437122217.PNG
> [2] http://picpaste.com/pics/Paraview-4-3-1-CPU-VR_win.1437122267.PNG
> [3] https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=23339
> [4] http://public.kitware.com/pipermail/vtkusers/2014-April/083584.html
>
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-- 



*| Aashish Chaudhary | Technical Leader         | Kitware Inc.            *
*| http://www.kitware.com/company/team/chaudhary.html
<http://www.kitware.com/company/team/chaudhary.html>*
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