I want to implement a new BRDF in Cycles.
I've already tried to code an OSL node but I couldn't because the way that BRDF closures are implemented in OSL seem to only permit BRDF closure composition.
I would like to now the standard (simplest) protocole to add a new BRDF closure in Cycles. I've already had my own blender build so I can modify the source code if there isn't another solution.
Edit : Or maybe, somebody eventually know where I can ask to get the answer ?