Roman Haefeli a écrit :
hi all
i'd like to drive two screens in fullscreen mode with puredata/gem and
wonder, which is the best way to go performance-wise.
the setup, that i'm working with:
- ubuntu jaunty
- pd-extended-41.4
- nvidia geforce 9800gt with two heads (if i recall correctly, can't
check at the moment)
- two monitors with different resolutions (1280x768 and 1280x1024)
so far, i came up with having two separate X screens, so that i can tell
[gemwin] with a 'create <screen-id>' message, on which screen to open.
this requires two instances of pd/gem, of course.
i wonder now, if it makes a difference performance-wise, when having
only one gem window, that spans both screens.
well, if you have a dual core computer, then 2 pd would help using your 2 core.
if you have to display the same geometry on the 2 screen in a way that you can
send less information in the GPU then, it could help to have only 1 windows.
anyway, best is to make benchmark...
however, when switching to
'twinview(tm)' mode, so that i have one big desktop spanning both
screens, i still cannot make the gemwin bigger than the size of the
screen, where it initially was displayed. is this because the do not
have the same resolution?
did you try with border 0?
otherwise, your gemwin is certainly resized by you windows manager.
it seems to actually work ok with the current setup, but i am curios,
what strategy other people followed, when trying to drive more then one
video output with gem.
if possible, using many computer certainly help for performance.
if performance is not a problem, then a dualhead2go from matrox help to drive 2
screen from 1 VGA/DVI output.
Cyrille
roman
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