[vtkusers] Incorrect zbuffer values...........Please Help !!!!!!

[Deepak Roy]

      Hello,
   
  I am experiencing really hard times with the zbuffer.
   
  I have converted the zbuffer to an image on disk. 
   
  Attached at the end of this message is the snapshot of the offscreen render widnow showing the geometry i rendered ( a hemisphere ) and the corresponding zbuffer returned by vtkWin32OpenGLRenderWindow.
   
  I played with various values of the clipping range, but what i get back is a complete inert behaviour, nothing really seems to change.
   
  All i get finally is a set of junk values in the zbuffer, which in no way correspond to the geometry i rendered.
   
  Any explanations for this wierd phenomenon ?
   
  Thanks in Advance.
   
  Regards,
   
  Deepak
   




			
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