offscreen rendering images dim on win32
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
captured images from a vtkWin32OpenGLRenderWindow offscreen context are dimmer than their onscreen counterparts. this seems to happen only when the user adds lights to the scene. Some initial scanning of the mailing lists give http://public.kitware.com/pipermail/vtkusers/2003-March/066054.htm and also http://public.kitware.com/pipermail/vtkusers/2003-April/066928.html as hints.