[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.


> 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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