bulletphysics/bullet3 — pull request #161 by XBog (2014-04-12 16:16:19+00:00)
Title: subdivision backface shouldnt be in front

with Subdivision turned on, the triangle face were wrong in my case.
i am not realy sure if its the same problem as in this issue:
https://code.google.com/p/bullet/issues/detail?id=772&colspec=Modified%20ID%20Type%20Stars%20Status%20Owner%20Summary