"Curtis L. Olson" <[EMAIL PROTECTED]> said:

> If that is not the case, then you will only be introducing odd
> rendering effects and you probably need to come up with a different
> approach.
> 
> It makes sense to change the near clip plane and clear the depth
> buffer before drawing the 3d aircraft model *if* it is going to be
> closer to the eye point than any terrain or other objects in the
> scene.  This should be the case for 'chase plane' type external views.
> 
> However, for tower views or any long distance viewing of models, the
> near/far clip planes should not be changed before drawing them so they
> can be properly integrated with the rest of the scene and the hidden
> surface removal will work right.
> 

Yes, what you have written is understood.  The problems I'm seeing do not 
appear to be just Z fighting and clearly have nothing to do with the near/far
plane settings.  Even with fp error, it seems the problem in that second
picture shouldn't be happening.

Best,

Jim

http://www.spiderbark.com/fgfs/KSFO-sinking.png
http://www.spiderbark.com/fgfs/KSFO-truman-show.png


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