I am attempting to run an openGL application from a remote pc.
Both pc's are on intranet (so GBit connection) and both are running ubuntu 13.04.

If I share the desktop of the pc running this openGL application , and connect to it with Remmina's remoteFX option, I can indeed -to my surprise- run this application.

Trying the same using tightvnc fails, because the application says it can not use some GL extensions..

Trying with ssh -Y also fails for the same reason.

So, what is the big picture (and the finer details) that make remoteFX possible?
Is it possible to enable something from command line, and enable this functionality for other X forwarding applications (like ssh -Y, nx, other vnc servers etc).

Thank you