hybrid-graphics-linux team mailing list archive

[Florian Berger <florian.berger@xxxxxxxxx>]

yes sure GPL!!
a stated before i actually wanted to do extend it on my own.
but i think i wont find the time so soon. and for now i can live with
this simple approach.
so id be really happy if you improve it. do whatever you want with this
code. its free as a bird ;)

  -harp1n

On Fri, 06 May 2011 11:28:59 +0200
Joakim Gebart <joakim.gebart@xxxxxx> wrote:

> I've been using this with great success the last couple of days. On my
> i3 2.4GHz I can run it at 60fps (the usleep in the code changed to
> 16000) with around 30% cpu usage on a single core.
> In my opinion the other method using virtualgl and passing data as
> jpeg is not the optimal solution to the optimus problem and feels a
> bit too complex. Using the quick and dirty solution, sharing an RGB
> buffer between two servers, should be able to get better framerate
> after some optimizations since we don't need to do any encoding of
> the data. For comparison: I get around 4000fps in glxgears on my GF
> GT310 using this method, although I only display 60fps on the intel
> card. I've been playing with the idea of running the windump program
> as a root window on the intel X display and then running Gnome or
> whatever on only the nvidia display. Another thing I've been wanting
> to test is to use the intel card's opengl for rendering and putting
> the XShm image in a texture. Also syncing with the intel card's
> refresh rate should be easy using opengl.
> 
> Florian: You didn't mention any license on the code you posted, would
> you like to release it under the GPL?
> I'm interested in working some more on this program, but I want to be
> able to release my modifications if I manage to achieve anything. Like
> markc said, github is excellent for this kind of project.
> 
> Best regards,
> Joakim
> 
> 2011-05-01 16:30, Joaquín Ignacio Aramendía skrev:
> > El dom, 01-05-2011 a las 12:13 +1000, Pigeon escribió:
> >> Hi Florian,
> >>
> >>> i recently bought a laptop (msi cx640) using nvidia optimus
> >>> unknowingly, that it was pretty unusable to me on linux.
> >>> however i found a (rather dirty) hack to be able to at least use
> >>> my nvidia graphics card, so that i dont have to throw my laptop
> >>> into the trashbin.
> >> 	I've been experimenting the same kind of approach by using
> >> vnc (x11vnc + vncviewer). I'm running two X servers on the same
> >> host, one intel and one nvidia. I have to force the two X servers
> >> to be on the same vt to trick both X to "render" at the same time,
> >> rather dirty too.
> >>
> >> 	Performance isn't great as expected. I got quite a lot of
> >> tearing when I was testing with some GL apps/games. But it's
> >> usable at least.
> >>
> >> 	I haven't tried your windump app yet. I believe you can get
> >> some performance gain by using the Xdamage protocol, which x11vnc
> >> uses by default. Though I'm not an X expert either. 
> >>
> >> 	This is on an Alienware M11x-R2 btw.
> >>
> >>
> >> Pigeon.
> >
> > Small steps for you... big ones for hybrid graphics I think :)