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[directfb-dev] Re: Seeing "tearing" using mplayer dfbmga
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[directfb-dev] Re: Seeing "tearing" using mplayer dfbmga

On Tue, Dec 10, 2002 at 05:11:43AM +0500, Antonino Daplas wrote:
> On Mon, 2002-12-09 at 18:25, Denis Oliver Kropp wrote:
> > Quoting Antonino Daplas (
> > > 4.  Which is why we really need an AGP surface in DirectFB for things
> > > like video :)
> > 
> > Yes, we really need that, but I'm too lazy to refactor the surface manager
> > stuff for such an extension.
> > 
> Attempted it once too, but it will need someone who knows the ins and
> outs of DirectFB :-)

Well my AGP patch should provide the low-level stuff. I was wondering
about just adding something like DSCAPS_AGPONLY so the impact on the rest
of the system would be minimal. For Matrox cards and mplayer this would be
enough since the card can blit directly to/from AGP memory. There's no
point in copying back and forth between video and AGP memory. It will need
to register another surface manager for the AGP memory. I think the
surface code wouldn't need much changes since each surface is already
linked to it's surface manager. We'd only need to add AGP-only surfaces
to the various switch statements. gfxcard and card driver code probably
need some more changes though. Perhaps I'm jut being too optimistic. Dok,
what do you think?

Ville Syrjälä

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