Re: [gentoo-user] cairo USE flags
Am 19.01.2013 12:36, schrieb Daniel Troeder: > Am 19.01.2013 11:49, schrieb Florian Philipp: >> Hi list! >> >> I've noticed that there is probably a lot of performance to be gained >> from activating backend acceleration in cairo. It's just that I have no >> clue about the details: >> >> drm, gallium and opengl are all described as accelerating backends. Does >> that mean they are mutually exclusive or can I activate them all and >> cairo will sort it out? >> >> What does the qt4 use flag do? Is it just a language binding? >> To answer myself on this: Yes it is. >> Does anyone know a simple benchmark for cairo? >> >> Thanks in advance! >> Florian Philipp >> > I found your question very interesting, and so I used... google :D > > -> Cairo seems to bring a benchmark with the source in cairo\perf. > -> http://cworth.org/intel/performance_measurement/ > I stumbled across this, too, while looking at the source tar-ball. I've done some benchmarks with the "macro" tests (i.e. traces) on mylaptop with Intel graphics and a desktop with the free radeon driver. In both cases, opengl was usually faster (sometimes considerably) than xlib. xcb never finished for some reason. > -> The Phoronix test suit ofc has a performance test for cairo :) > -> I looked into some examples, and there are BIG differences between >gfx cards: > http://openbenchmarking.org/prospect/1204129-SU-NVIDIAGEF19/3653c29c52e5da38d1879d193dc660515f97d242 > > -> This posting is most interesting: > http://lists.cairographics.org/archives/cairo/2012-October/023609.html > > As a nvidia blob user it seems I should be using the XRender backend. > But how? I can USE=-opengl to have that out of the way, but what's with > the other USE flags? [...] > Now I wonder if cairo doesn't simply choose the best one automatically? > Or should I "X -xcb -opengl -openvg"? > (Keeping "glib qt4 svg" for apps on.) > > [..] > > I used cairo-trace to start some programs and it seems like programs can > set their desired backend. There is a "/type" setting: > > /type 42 set (firefox, soffice, clementine, evince, opera, > crack-attack, digikam, inkscape) > /type /xlib set(firefox, soffice, clementine, evince, > crack-attack, digikam, inkscape) > /type /xrender set (firefox, soffice, clementine) > > > I wonder what "42" is... > I think that's related to a font format. Regards, Florian Philipp signature.asc Description: OpenPGP digital signature
Re: [gentoo-user] cairo USE flags
Am 19.01.2013 11:49, schrieb Florian Philipp: > Hi list! > > I've noticed that there is probably a lot of performance to be gained > from activating backend acceleration in cairo. It's just that I have no > clue about the details: > > drm, gallium and opengl are all described as accelerating backends. Does > that mean they are mutually exclusive or can I activate them all and > cairo will sort it out? > > What does the qt4 use flag do? Is it just a language binding? > > Does anyone know a simple benchmark for cairo? > > Thanks in advance! > Florian Philipp > I found your question very interesting, and so I used... google :D -> Cairo seems to bring a benchmark with the source in cairo\perf. -> http://cworth.org/intel/performance_measurement/ -> The Phoronix test suit ofc has a performance test for cairo :) -> I looked into some examples, and there are BIG differences between gfx cards: http://openbenchmarking.org/prospect/1204129-SU-NVIDIAGEF19/3653c29c52e5da38d1879d193dc660515f97d242 -> This posting is most interesting: http://lists.cairographics.org/archives/cairo/2012-October/023609.html As a nvidia blob user it seems I should be using the XRender backend. But how? I can USE=-opengl to have that out of the way, but what's with the other USE flags? looking at the ebuild I see, that I only need "X" :) $(use_with X x) \ $(use_enable X xlib) \ $(use_enable X xlib-xrender) \ $(use_enable aqua quartz) \ $(use_enable aqua quartz-image) \ $(use_enable debug test-surfaces) \ $(use_enable directfb) \ $(use_enable glib gobject) \ $(use_enable doc gtk-doc) \ $(use_enable openvg vg) \ $(use_enable opengl gl) \ $(use_enable qt4 qt) \ $(use_enable static-libs static) \ $(use_enable svg) \ $(use_enable xcb) \ $(use_enable xcb xcb-shm) \ $(use_enable drm) \ $(use_enable gallium) \ Now I wonder if cairo doesn't simply choose the best one automatically? Or should I "X -xcb -opengl -openvg"? (Keeping "glib qt4 svg" for apps on.) [..] I used cairo-trace to start some programs and it seems like programs can set their desired backend. There is a "/type" setting: /type 42 set (firefox, soffice, clementine, evince, opera, crack-attack, digikam, inkscape) /type /xlib set(firefox, soffice, clementine, evince, crack-attack, digikam, inkscape) /type /xrender set (firefox, soffice, clementine) I wonder what "42" is... Greetings, Daniel
[gentoo-user] cairo USE flags
Hi list! I've noticed that there is probably a lot of performance to be gained from activating backend acceleration in cairo. It's just that I have no clue about the details: drm, gallium and opengl are all described as accelerating backends. Does that mean they are mutually exclusive or can I activate them all and cairo will sort it out? What does the qt4 use flag do? Is it just a language binding? Does anyone know a simple benchmark for cairo? Thanks in advance! Florian Philipp signature.asc Description: OpenPGP digital signature
