Synchronization with CRT refresh

[Michel Dänzer]

On Wed, 2005-05-04 at 11:40 -0400, Jim Gettys wrote:
> On Tue, 2005-05-03 at 16:17 -0400, Michel Dänzer wrote:
> > 
> > One thing that's still missing is the ability to select the display
> > controller that should be waited for on cards with multiple controllers,
> > but the interface should be extensible enough that this could be added
> > in a backwards compatible way.
> 
> Vertical retrace is clearly a property of the monitor, rather than the
> graphics card itself...

We don't have any control over what the monitor does with the signal(s)
we generate, so synchronizing with the display controller is the best we
can do.


-- 
Earthling Michel Dänzer      |     Debian (powerpc), X and DRI developer
Libre software enthusiast    |   http://svcs.affero.net/rm.php?r=daenzer