[haiku-appserver] Re: drawing thread
- From: "Rudolf" <drivers.be-hold@xxxxxxxxxxxx>
- To: haiku-appserver@xxxxxxxxxxxxx
- Date: Mon, 01 Nov 2004 12:14:20 +0100 CET
OK, OK one more update:
The difference between the setup as below, and the triple setup, is
that in the setup below the blit from back to front buffer has to be
done and completed _during_ retrace (doable I would guess);
While with the triple version you only need to flip during retrace.
Actual drawing from back to 'front' buffer may here be much slower.
Rudolf.
> Hi once more,
>
> > > IMHO, the only solution, is to always draw into the backbuffer
> > > and
> > > then blit into front buffer
> > > during retrace.
>
> On second thought: if this blit could always be started as soon as
> the
> retrace start, AND if this blit is so fast, it would always complete
> within retrace, than this is a good plan!
>
> It would mean we can slowly draw in the backbuffer during the entire
> screen active time, and then quicky blit to front buffer during
> retrace. Damn, didn't think of that: sounds even simpler. :-)
>
> Rudolf.
>
>
>
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