[vtk-developers] VTKEdge on OS X 10.6

[Francois Bertel]

My question is more like: what do you even see the file
vtkKWEOpenGLGPUVolumeRayCastMapper.cxx yet.

This file should be gone.

On Mon, Feb 22, 2010 at 10:36 AM, Fauze Polpeta <fauze.polpeta at gmail.com> wrote:
> Hi Francois;
>
> Unless the pre-processor rule (#ifdef __APPLE__ ...) is inputed during
> CMake configuration in Snow Leopard, I'm not seeing it in
> vtkKWEOpenGLGPUVolumeRayCastMapper.cxx any more.
>
> Since in my first attempts I copied my configuration from Snow Leopard
> to Leopard, such code was there.
>
> Further, in order to inspect the problems I'm facing with GPU-based
> Ray Cast, I checked out the code again in Leopard and didn't see this
> piece of code any more.
>
> Best Regards
>
> Fauze
>
> On Mon, Feb 22, 2010 at 11:39 AM, Francois Bertel
> <francois.bertel at kitware.com> wrote:
>> Hi Fauze,
>>
>> What do you mean by "4) ... these statements were removed from
>> vtkKWEOpenGLGPUVolumeRayCastMapper.cxx.?
>>
>> vtkKWEOpenGLGPUVolumeRayCastMapper.cxx has been removed from VTKEdge
>> and moved as vtkOpenGLGPUVolumeRayCastMapper.cxx in
>> VTK/VolumeRendering and the statement about snow leopard is still there.
>>
>>
>>
>> On Fri, Feb 19, 2010 at 8:21 PM, Fauze Polpeta <fauze.polpeta at gmail.com> wrote:
>>> Dear David;
>>>
>>> Last 2 weeks I'm pursuing to get vtkOpenGLGPUVolumeRayCastMapper properly
>>> working on Mac OS X. In respect to that consider the following:
>>>
>>> 1) vtkOpenGLGPUVolumeRayCastMapper has been moved to VTK repository, but it
>>> still can be found at
>>>
>>> "https://www.kitware.com/svn/KWPublic/trunk/VTKEdge-5-4-0/" instead of
>>> https://www.kitware.com/svn/KWPublic/trunk/VTKEdge/
>>>
>>> 2) The error you are facing is probably a consequence of the following
>>> statements in vtkKWEOpenGLGPUVolumeRayCastMapper.cxx
>>>
>>> #ifdef __APPLE__
>>> this->LoadExtensionsSucceeded = 0;
>>> return;
>>> #endif
>>>
>>> 3) This was placed to avoid a bug in NVidia driver for Snow Leopard (a
>>> infinite loop) but such statements were also affecting Leopard.
>>>
>>> 4) Today, I saw that these statements were removed from
>>> vtkKWEOpenGLGPUVolumeRayCastMapper.cxx. So after updating your source code,
>>> you will probably be able to get GPU-based Ray Cast working in Leopard but
>>> not yet in Snow Leopard.
>>>
>>> 5) However, I'm facing two problems that I'm not able to set them as VTKEdge
>>> issues or new NVidia bugs in Mac OS X.
>>>
>>> a) GPU-based Ray Cast is not working for DICOM CT datasets that have more
>>> than 170 images (aprox.) and are 512x512 in size. Resultant volume is very
>>> "scratched".
>>>
>>> b) Shading (3D Textures, etc) doesn't work as well. Interacting with the
>>> volume is very compromised, I can say impossible.
>>>
>>> 6) I run the same tests on Linux and everything went fine.
>>>
>>> 7) I tried VolView 3.2, which, in principle, relies on the same approach
>>> (perhaps, the same library) for performing GPU-based Ray Cast, but it
>>> crashes when GPU support is active. My guess this is caused by the
>>> statements mentioned in 2).
>>>
>>> 8) More on this you will find on my submissions to the VTKEdge mailing list:
>>>
>>> http://public.kitware.com/pipermail/vtkedge/2010-February/000295.html
>>> http://public.kitware.com/pipermail/vtkedge/2010-February/000296.html
>>>
>>> Hope it helps you.
>>>
>>> Best Regards
>>>
>>> Fauze
>>>
>>>
>>> On Fri, Feb 19, 2010 at 3:04 PM, David Gobbi <david.gobbi at gmail.com> wrote:
>>>>
>>>> I'm seeing the following error when I try to use the new GPU ray cast
>>>> mapper on my Mac.  The last time that I tried VTKEdge on this machine
>>>> (a few weeks ago) there were no problems.
>>>>
>>>>
>>>> ERROR: In
>>>> /Volumes/Work/Kitware/vtk-cvs/VolumeRendering/vtkOpenGLGPUVolumeRayCastMapper.cxx,
>>>> line 4128
>>>> vtkOpenGLGPUVolumeRayCastMapper (0x10081a000): Rendering failed
>>>> because the following OpenGL extensions are required but not
>>>> supported:
>>>>
>>>> Segmentation fault
>>>>
>>>>
>>>> There are also some rendering errors related to combined clipping and
>>>> cropping that I see under Linux.  Cropping blocks being displayed when
>>>> they are not flagged, or blocks displayed on the wrong side of the
>>>> clipping plane.  I'm not sure if these were present with VTKEdge.  I
>>>> can provide screenshots when I get back to my Linux PC this evening.
>>>>
>>>>  - David
>>>> _______________________________________________
>>>> Powered by www.kitware.com
>>>>
>>>> Visit other Kitware open-source projects at
>>>> http://www.kitware.com/opensource/opensource.html
>>>>
>>>> Follow this link to subscribe/unsubscribe:
>>>> http://www.vtk.org/mailman/listinfo/vtk-developers
>>>>
>>>
>>>
>>> _______________________________________________
>>> Powered by www.kitware.com
>>>
>>> Visit other Kitware open-source projects at
>>> http://www.kitware.com/opensource/opensource.html
>>>
>>> Follow this link to subscribe/unsubscribe:
>>> http://www.vtk.org/mailman/listinfo/vtk-developers
>>>
>>>
>>>
>>
>>
>>
>> --
>> François Bertel, PhD  | Kitware Inc. Suite 204
>> 1 (518) 371 3971 x113 | 28 Corporate Drive
>>                      | Clifton Park NY 12065, USA
>> _______________________________________________
>> Powered by www.kitware.com
>>
>> Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html
>>
>> Follow this link to subscribe/unsubscribe:
>> http://www.vtk.org/mailman/listinfo/vtk-developers
>>
>>
>



-- 
François Bertel, PhD  | Kitware Inc. Suite 204
1 (518) 371 3971 x113 | 28 Corporate Drive
                      | Clifton Park NY 12065, USA