openGL context on multiple monitors

    Apr 29 2006 | 11:40 am
    Hi All,
    there is a huge performance problem when some openGL context is
    displayed in a window extending multiple screens, typically 2
    monitors driven by the same graphic card;
    here on a DP G5 2.7Ghz with an ATI Radeon 9600, the frame rate is at
    25fps when the window is entirely on one screen, but as soon as it
    extends on 2 screens, fps drops at 12 fps...
    this topic has been probably discussed before, i think there are
    graphic cards which handle much better dual monitors display
    (nVidia?), or probably there are some new ones coming out there (the
    Matrox DualHead2Go box);
    any advise or recent experiences on this issue?
    Yves Bernard
    asbl iMAL vzw
    rue d'Alost straat 7
    1000 Bruxelles/Brussel
    tel 32 2 213 37 10