How many framebuffers does openmoko has?

[Vishwas P S]

OK. In that case how do we prevent tearing of images on the screen ? i.e.
how do we implement a tearing-less display solution ?
Normally as far as I know, /dev/fb's memory would be mapped to apps and
there is no way for the driver to sync memory updates with Vsync ... Pl
correct me if I'm wrong

- Vishwas


On 5/8/08, The Rasterman Carsten Haitzler <raster at openmoko.org> wrote:
>
> On Thu, 8 May 2008 13:16:37 +0530 "Vishwas P S" <vishwas.ps at gmail.com>
> babbled:
>
> > Can the display/video card recognize two planes (a BG and an FG) .. If
> yes,
> > it would be very easy to overlay one (FG )onto the other and the
> app/driver
> > generating the video(FG) data need not worry abt graphics FB and
> delegate
> > the job of combining to the hardware ?
> >
> > Is this a possibility on the Glamo ?
>
> no.
>
> > - Vishwas
> > (Am sorry if this is an irrelavent question ... i've seen this on the
> > Freescale chipset that i work on .. so am just curious to know if this
> is a
> > possibility)
> >
> >
> > On 5/8/08, The Rasterman Carsten Haitzler <raster at openmoko.org> wrote:
> > >
> > > On Thu, 8 May 2008 11:04:37 +0800 "Bin Chen" <binary.chen at gmail.com>
> > > babbled:
> > >
> > > > Hi,
> > > >
> > > > I just take a look at media player source code, seems the mplayer
> use
> > > > the fbdev directly instead of X. So I think there are two fbdev in
> > > > system? One for X the other for mplayer?
> > >
> > > nup. there can be only one. (yes - bad quote...) :) yes. they will
> > > conflict. if
> > > both draw at once... you will get artifacts.
> > >
> > > > Otherwise it will conflict.
> > > >
> > > > Thanks.
> > > > Bin
> > > >
> > > > _______________________________________________
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> > > > community at lists.openmoko.org
> > > > http://lists.openmoko.org/mailman/listinfo/community
> > >
> > >
> > > --
> > > Carsten Haitzler (The Rasterman) <raster at openmoko.org>
> > >
> > > _______________________________________________
> > > Openmoko community mailing list
> > > community at lists.openmoko.org
> > > http://lists.openmoko.org/mailman/listinfo/community
> > >
> >
>
>
> --
> Carsten Haitzler (The Rasterman) <raster at openmoko.org>
>
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