hybrid-graphics-linux team mailing list archive

[Ted <tedr56@xxxxxxxxx>]

Is this can help?

http://www.phoronix.com/scan.php?page=news_item&px=OTQwNw

> 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 :) 
> 
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