> Could be very well, though, that your problem has a completely different
>    source.

Another trouble could be that the normals don't point to the same side of
the triangle. I recall lighting issues when some of the normals of the
triangle were calculated clockwise and some counterclockwise when generating
them using my MMM with a faulty code.

Additionally, what's the size of your triangles? If they're *very* tiny, you
could run into the floating-point precision problem.

Regards,
Tim

-- 
aka "Tim Nikias v2.0"
Homepage: <http://www.nolights.de>

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