Warp wrote:

>   These bugs usually show up as small black areas in certain parts of the
> heightfield. These areas are not shadows (no_shadow as no effect on them)
> and they depend on the location of the camera (when the the heightfield is
> looked from a bit different location, the size of these black areas change
> or they disappear).

  Hmmm... seems like "missing triangles" to me, they are very coincident 
with triangles when you trace it big enough. Also, it seems it is something 
to do with smooth, because I can't reproduce it without that keyword.

-- 
Jaime Vives Piqueres

La Persistencia de la Ignorancia
http://www.ignorancia.org

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