Render the attached RIB. The result should be two Sierpinski-looking things. The right figure is several small black triangles atop a white triangle; the left figure is a white triangle with
holes cut in it. The left figure renders improperly.
I believe that the RIB's geometry is correct, as it renders correctly in BMRT and 3Delight. The model was adapted from the examples to "Renderman for Beginners", at http://smartcg.com/tech/cg/books/RfB/download/contents/Ch04_GeomPrim/Fig_4.19/index.html.
I'm running aqsis version 1.5.0 (revision 2522) on Ubuntu Hardy.