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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 Sun, Dec 08, 2002 at 02:38:52PM +0500, Antonino Daplas wrote:
> On Sun, 2002-12-08 at 11:19, Ville Syrjälä wrote:
> > Well, the async flip stuff would only work with triple buffering. With
> > just two buffers you will end up drawing to the front buffer.
> > 
> Not necessarily. For standard 2d/3d apps, that is true. For frontends
> that guarantee a steady frame rate, this is useful and you will have
> extra CPU cycles to spare. I've been using this capabability, and I'm
> only getting 1-3% cpu usage.

Well unless you have special hardware there's nothing to guarantee that
the input and output are running in sync. With video players the input is
usually synced to the audio card and output is synced to the video card.

-- 
Ville Syrjälä
syrjala@sci.fi
http://www.sci.fi/~syrjala/


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