i made a real time outline that works in preview with backface culing and soildfy but goes all black in render
before
https://drive.google.com/file/d/0B7yIQ0LAJGEPZGJlNjdzd3E4VDA/view?usp=sharing
and after
https://drive.google.com/file/d/0B7yIQ0LAJGEPWGR5Nm9ZMVZBTWM/view?usp=sharing