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 yb@imal.org asbl iMAL vzw rue d'Alost straat 7 1000 Bruxelles/Brussel tel 32 2 213 37 10