Brandon Bergren writes:
> There is no visibility culling whatsoever in FG. (other than maybe 
> back-face).  FG depends upon distance culling instead.
> 
> I don't think BSP works very well outdoors, anyway :)

FlightGear uses view frustum culling (and in most cases has back face
culling turned on as well.)

Regards,

Curt.
-- 
Curtis Olson   IVLab / HumanFIRST Program       FlightGear Project
Twin Cities    [EMAIL PROTECTED]                  [EMAIL PROTECTED]
Minnesota      http://www.menet.umn.edu/~curt   http://www.flightgear.org

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