[vtkusers] VTK 5.2 and 5.4 bug

[Rolf Anders Syvertsen]

When I try to set the render offscreen value on, my linux computers gets a segmentation fault. Works find on my windows computer.

I need a way to be able to render without the screen (xwindows), need to be able to render on my linux cluster, have loads of data that I need to render. Is it possible to do this with VTK? Or do I need to find an other way of doing this? Am a little feedup of messing with the !"well" documented vtk.


-----Opprinnelig melding-----
Fra: vtkusers-bounces at vtk.org [mailto:vtkusers-bounces at vtk.org] På vegne av Francois Bertel
Sendt: 31. mars 2009 15:43
Til: vtkusers at vtk.org
Emne: Re: [vtkusers] VTK 5.2 and 5.4 bug

Hi,

As mangle Mesa was pretty broken and there were other alternatives to perform offscreen rendering, it was decided a long time ago to stop maintaining  the vtkMesa* classes.

The other alternatives for offscreen rendering are:
* if you have mesa compiled with offscreen and you set VTK_OPENGL_HAS_OSMESA to ON during the VTK build and you set OffScreenRendering ivar to on on the vtkWindow (superclass of vtkXOpenGLRenderWindow), it will use it first.
* if not, if you graphics card support framebuffer object (FBO), it will use it
* if not, if supported, if will use pbuffers (pixel buffers) (note:
this has nothing to do with pixel buffer objects (PBO) )
* if not, it will use pixmaps.

On the VTK dashboard,
* arkadia.kitware covers offscreen with FBO
* hythloth.kitware covers Mesa
* dash16.kitware covers Mesa with VTK_OPENGL_HAS_OSMESA:BOOL=ON



On Tue, Mar 31, 2009 at 4:01 AM, Rolf Anders Syvertsen <Rolf.Anders.Syvertsen at rikshospitalet.no> wrote:
> The code will not compile with Mesa enabled. The Rendering/vtkMesa*.* 
> files are old.  Where are the correct files? Has the Mesa part been 
> forgotten? Is there an other way to run offscreen rendering on linux in the new versions?
> Did not work on linux on 5.2 by default with out mesa.
>
>
>
> Rolf Anders Syvertsen
> Software Developer
> IMI (Institute for Medical Informatics) Radiumhospitalet, Oslo 
> Universitetssykehus HF
> email: rolf.anders.syvertsen at rikshospitalet.no
>
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