I learned most of what I know about graphics programming with gamestudio and that is probably more than 99.9% of Unity users do.
There is no problem with postprocessing, deferred lighting, reflecting water and shadow mapping with A7 Comm.

Lite-C Tut. 1 Lite-C Tut. 2 Lite-C Tut. 3 (en)
Shader Tutorial (ger)

http://www.slindev.com