Roman Haefeli a écrit :
...
it still think, that i have 'good' acceleration. for example i can run
opengl based games like armagetron in fullscreen mode without any
performance problems. also does xscreensaver run without using much cpu
in fullscreen mode. i tried once to build something with a similar
number of polygons like one of the screensaver animations in gem, but at
least when i switch to fullscreen mode, my cpu goes to 100% and the
framerate dramatically drops down to 5 frames per second or slower.
because of this behaviour, i believe that gem is the only opengl based
software on my computer, that does *not* use hardware acceleration,
whereas it seems that other programs do. unfortunately i still don't
know a reliable way to make sure, whether gem uses hardware acceleration
or not, besides comparing its performance with other software.
ok.
anyway,
on my computer, when i create a gem window, i'v got this on the pd log :
Direct Rendering enabled!
GEM: Start rendering
so, this tell you that you do (or do not) have direct rendering with Gem.
my problem in other words:
how can i make sure at compile time, that gem is compiled so, that it
uses hardware acceleration afterwards?
and i am still hoping to hear some succes stories....
well, there is no reason that gem did not work.
i used fglrx with warty and hoary (it was a ati radeon mobility 9000 i think).
now, i use nvidia card...
your ./configure output look ok for me.
can you double check that you have all fglrx-dev package etc...
sorry, can't help more
cyrille
roman
well, i hope it help,
cyrille
Roman Haefeli a écrit :
hi all
i am trying to use gem, since i changed to ubuntu. i used gem before
successfully on windows on the same computer. but since i started
compiling gem myself on ubuntu dapper, i am not convinced by its
performance and i strongly believe that i am doing something wrong, or
anything on my computer is not optimized etc.
specs:
Pentium M 1.7GHz
Ati Radeon Mobility 9600
Ubuntu Dapper
Xorg 7.0.0
xorg-driver-fglrx
gem from cvs (checked out today)
the output of './configure':
http://romanhaefeli.net/gem_configure.txt
why am i thinking that gem is not working well on my computer?
the screensaver also does opengl stuff, that seems to be quite
complicated in my eyes and it does eat only a little of the cpu-power,
when running. also running the same gem-patches on windows seems to be
not only 2x-3x faster, but maybe 30-50 times. running fgl_glxgears gives
me values between 440 and 450 frames per second, which makes me assume,
that hardware accelerated opengl works on my computer.
you should have 10 time more with this card.
so i suspect gem
no to use any hardware acceleration at all and i wonder why. is there a
way to check, if gem uses hardware acceleration? if yes and if my gem is
_not_ using hardware acceleration, what do i need to do in order to make
gem use of it?
many thanks in advance
roman
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