Hello all.

I do not know if this is the right place to post. I apologize to the moderators if it is not the right place.
I'm testing animations with biped and just made a static and export to .dae (3d max):

and rendered with c ++ and opengl (asp), but the result was kind of weird, some "faces" appear where it does not have:

all other objects I render are normal. This is normal ? Am I doing something wrong?

Thank you