Xoliul, I think your proposal makes a lot of sense : not breaking existing functionality and adding some more. I'm copying Eric comments for review as a possible solution. GLib, I note your request for better documentation. thanks for your feedback, don`t hesitate if you have some more comments, I'll keep reading for a…
My biggest request would be that whatever is done in terms of tangent basis, please make it transparent either somewhere in the RTT dialogue, or documented somewhere in the help docs. I don't really care if it's "correct", I just care if I can get a description of how you derived that tangent space so I can pass it on to a…