Rendering same context to 2 windows

    Sep 21 2011 | 4:57 pm
    I will be performing soon in a place where I won't be able to see the screen on which I am projecting my video. I would need to have a window in my patch which allows me to see the video I am improvising, while still sending the video out to the beamer.
    Since it is not possible to have 2 with the same gl context name, anybody can give me any clue about how to achieve this?
    Thanks in advance!