[vtkusers] Render to two windows

[Gilles Rosset]

Hello,

I'm trying to paint the output of a renderer to two different render 
windows. The problem is that only one displays the expected result (i.e. 
the last one defined in my code), the other one remains black. Is it an 
OpenGL problem (only one OpenGL window) or a pipeline problem (the 
output of the renderer can be used by only one window) ?

Any ideas?

Thanks by advance,

Gilles Rosset