[vtkusers] VTK 5.2 and 5.4 bug

[Francois Bertel]

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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François Bertel, PhD  | Kitware Inc. Suite 204
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