[vtkusers] OffScreen Rendering using Mangled Mesa

[Gerrick Bivins]

Hi Dave,
Are you suggesting that we don't need to use mesa for offscreen rendering if
our graphics cards support it?
This is what I thought but the example for this (these are pretty new,
correct?) still uses Mesa:
(http://www.vtk.org/Wiki/VTK_Examples_Off_Screen_Rendering)


Gerrick

On Mon, Jan 18, 2010 at 12:49 PM, David E DeMarle
<dave.demarle at kitware.com>wrote:

> I recommend against venturing down the mangled mesa path. First, its
> main use, that of providing offscreen rendering to supplement GPUs
> that lack it, is mostly obviated by recent GPUs. If your cards still
> lack support, it is far better to use Mesa's own OSMesa library.
> Secondly, neither the mesa nor VTK communities have supported it in
> several years.
>
> David E DeMarle
> Kitware, Inc.
> R&D Engineer
> 28 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-371-3971 x109
>
>
>
> On Mon, Jan 18, 2010 at 1:41 PM, Hassan Amin <hassan.amin at nu.edu.pk>
> wrote:
> > Hi,
> >
> >  I set up various options regarding rendering and offscreen rendering
> > in VTK, but it requires mangled mesa. I am using vtk 5.2.1 and ubuntu
> > 9.1. I was wondering which packages on ubuntu will provide appropriate
> > version of mesa for me. Currently, I am getting the following error
> > when compiling vtk :
> >
> > [ 70%] Building CXX object
> > Rendering/CMakeFiles/vtkRendering.dir/vtkOpenGLExtensionManager.o
> > /home/hassan/vision/VTK/Rendering/vtkOpenGLExtensionManager.cxx: In
> > member function ‘virtual void (*
> > vtkOpenGLExtensionManager::GetProcAddress(const char*))()’:
> > /home/hassan/vision/VTK/Rendering/vtkOpenGLExtensionManager.cxx:270:
> > error: ‘glXGetProcAddressARB’ was not declared in this scope
> > make[2]: ***
> [Rendering/CMakeFiles/vtkRendering.dir/vtkOpenGLExtensionManager.o]
> > Error 1
> > make[1]: *** [Rendering/CMakeFiles/vtkRendering.dir/all] Error 2
> > make: *** [all] Error 2
> >
> > Any help in resolving this error will be appreciated.
> >
> > Best Wishes,
> >
> > --
> > Dr. Hassan Amin
> > Assistant Professor
> > Head of Computer Science Department
> > National University(NUCES)
> > Peshawar Campus
> > Pakistan
> > Phone:0092-(0)91-111-128-128
> > Email: hassan.amin at nu.edu.pk
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