Re: Problems with Z-buffer.

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Thomas M. Miller (miller++at++acusoft.com)
Fri, 15 May 1998 13:09:26 -0400 (EDT)


> Kenneth Sewell wrote:
> >
> > I have been working on a flight sim that loads in several
> > rectangular patches of terrain. The problem is that the z-buffer
> > works correctly for the elements of each patch individually but
> > not between the elements of two different patches. I apologize
> > if I'm not being very clear, I'll give an example. If I have two
> > patches A and B (each of them made up of a few thousand
> > polygons) with A being closer to the viewer than B. All of
> > the polygons in A have been rendered properly with respect
> > to each other, all of the polygons of B have been rendered
> > properly with respect to each other. However parts of B
> > that should be hidden behind A, are drawn as though they
> > are nearer. This only happens to part of B, the rest of it is
> > behind A, like it should be. I am loading all of the patches
> > at the same time and they are all children of one DCS node.
> > I would appreciate any help you can offer. Thanks.
> >

Is It possible that you have a pfLayer Node in the tree that might cause this?

Or maybe some PFSTATE_DECAL mode set in your pfGeoStates?

--TMIV
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