I actually have 2 Q's
the files I'm working with only provide 4x3 inverse bind matrices for bones.
what I first need is a function that writes the 4th row of the matrix
and then I need to know PyOpenGL's matrix inversion function
(since it's faster than my current function)
so as for my 2 Q's:
how do you turn a 4x3 matrix into a 4x4 matrix??
what's PyOpenGL's matrix inversion function??