Hi,
Is karma able to render concave polygon?

Thanks.

karma can only render triangles, It's probably just convexing it differently than the opengl viewer, which also can only draw triangles. If you explicitly convert to triangles before rendering, you can control how the shape is convexed.

Please submit a bug with the example file - Karma should be generating proper triangulation.

Bug is reported as #143309.

I think I have this problem on my current project.
Does this bug is resolved ? Or does we need to triangulated all our polygon to avoid bad surprise ?

This bug has been fixed.