Hi all, 

recently, Raspbian Gets Experimental OpenGL Driver [1].
So I build Gem and it works.
I didn't test it deeply but few examples, from basics to shader passing through particule system work fine.
For now, I don't know any way to create a Gem window without a X server, but maybe it's somehow possible.
There are two versions in deken already, an APT one, and a more recent one.
Cheers

Antoine

--
do it yourself                      
http://antoine.villeret.free.fr