Error with non textured subfaces (pfLayers)

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Mario Veraart (rioj7++at++fel.tno.nl)
Tue, 6 Jan 1998 21:34:15 +0100 (MET)


Hello pfAll,

I have a problem with a database that consists of polygons with
subfaces that are all non textured. (In the database version where
they are textured I don't have a problem).

The database format I have is Multigen flight V15.4, with loader
version 15.2d.

The subface polygons partially overlap. The higher layers
overlap the first subfaces. When the polygons are non textured they
are all put into one pfGeoset for each base polygon. And probaly the
tri-stripper reorganises them in a way that the order as modeled is not
preserved. The result is that adjacent superfaces have a discontinuity
for at the colors for the different layers. (The polygons that should
cover part of otherpolygons are sometimes drawn first)

When the subfaces are textured the order as modeled is preserved and
the database looks as it should be. That's because all the polygons with
one texture are put in a separate pfGeoset and there order is
maintained in the pfGeode that forms the first layer in the pfLayer
node.

Is there a solution to this problem?

Is it possible to disable the tri-stripper, to see if it's the cause?

Mario Veraart
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