That is a per producer detail. Its all in the contract that he/she will have for a client to sign. Some require royalties, some dont. Depends on who you are working with and how big of a name they carry. As are most things in life, the contract should be negotiable. Dont sign anything you dont feel mostly comfortable with. It costs money, but It cant help to get a contract looked over by a music industry lawyer, or other legal help.

Hope this helps

on average yes they get points. and they get and advance as opposed to a fee. an advance is more important than ever these days as that is usually ALL the producer will see.