found out a RR rom dont have wifi direct.
so sad, yesterday want to receive a big video file from friend,
cant detect my phone but cant send, checked online and realize AOSP AOKP dont have wifi direct function
too heavy hearted to leave RR due to this but i do need wifi direct.
samsung rom is no go cos long FC bug.
solution?
tried dual boot from siyah kernal.
first time try it, its ridiculously easy.
i have a sensation rom CWM backup in my internal memory
just go siyah recovery, and choose restore backup to 2nd rom.
done in 15 minutes.
now use RR as main, and restart into sensation if need send or receive big big files using wifi direct.

Good info....