[vtkusers] Frame Buffer

[VTK Novice]

Hi everyone,

i am new to vtk. I have a question that might seem very trivial to some of 
the vtk - gurus out there.

I want to render 2 objects. Areas of object 2 are occluded behind object 1.  
I want to preserve the data corresponding to the OCCLUDED areas, which are 
traditionally eliminated / overwritten in the frame buffer. I want to 
preserve the data so that I can use it when looking at the same 2 objects 
from a different camera position.

This is similar to the "Layered Depth  Images" approach.

Can anyone help me with this? How should I go about backing up that info 
before it is lost in the framebuffer?

Please help.....Any help will be highly appreciated.

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