[vtkusers] Shadows not being created?

[Arnaud BARRE]

I've just tried under MacOS X 10.5 with VTK 5.10 and everything is black. I
have no light.

The console returns me this errror several times:

ERROR: In
/Users/Alzathar/Downloads/Code/vtk-5.10/Rendering/vtkOpenGLProperty.cxx,
line 407
vtkOpenGLProperty (0x1c25230): Using the current shader program is invalid
with the current OpenGL state. Validation log=Validation Failed: Sampler
error:
  Samplers of different types use the same texture image unit.
   - or -
  A sampler's texture unit is out of range (greater than max allowed or
negative).

Do you have this kind of error message too? Maybe your problem is related
to shader program?

Arnaud

On Sun, Oct 28, 2012 at 7:33 PM, David Doria <daviddoria at gmail.com> wrote:

> In this wiki example:
> http://www.vtk.org/Wiki/VTK/Examples/Cxx/Visualization/Shadows
>
> it is supposed to create shadows on the plane, like this:
>
> https://gitorious.org/vtkwikiexamples/wikiexamples/blobs/master/Testing/Baseline/Visualization/TestShadows.png
>
> However, on my machine, it is producing:
>
> https://gitorious.org/vtkwikiexamples/wikiexamples/blobs/master/Testing/Baseline/Visualization/TestShadows_1.png
>
> Does anyone know what might cause the shadows not to be created?
>
> Thanks,
>
> David
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