[vtkusers] positional light

[Franz Th. Langer]

Dear VTK-users,

I am using 2 Actors:

one vtkActor with vtkPolyData and 2d-Text with vtkActor2D.

I can show both at the same time when I use normal light conditions!

as soon as I switch the light to positional light, only the polygonal
data are shown,
and the space where the 2d-Text should be is empty?

has anybody an explanation for this behavier?
regards Franz