Yves Bernard

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 

any advise or recent experiences on this issue?

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);

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

http://www.imal.org
http://www.i-cult.be


openGL context on multiple monitors