#101 GeneralPolygons with holes are corrupted.

open-accepted
nobody
None
6
2008-10-19
2008-10-17
Adam Buchbinder
No

Render the attached RIB. The result should be two white five-pointed stars, each with an upside-down five-pointed star inside it. The left figure is a black star on top of a white star; the right figure is a white star with a hole cut in it. The right star renders improperly.

I believe that the RIB's geometry is correct, as it renders correctly in Aqsis, 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 Pixie SVN (r1169) on Ubuntu Hardy.

Discussion

  • RIB

     
    Attachments
  • Scene as rendered by r1169.

     
    • priority: 5 --> 6
     
  • Okan Arikan
    Okan Arikan
    2008-10-19

    Yes, there seems to be a bug in triangulation of polygons with holes. Will solve it soon.

     
  • Okan Arikan
    Okan Arikan
    2008-10-19

    • status: open --> open-accepted