Re: [AD] X vsync emulation (timing)

[Elias Pschernig <elias@xxxxxxxxxx>]

On Thu, 2004-11-18 at 04:24 -0800, Chris wrote:
> > 
> > As a side effect, programs that use vsync() no longer take up 100% CPU
> > on X.  It's like calling rest().
> 
> I can't say I like this. For one, it forces the main thread to sleep
> for the durration of the timeslice, unconditionally, when vsync is
> called. Also, the current way of vsync'ing does not always run at
> 70Hz, but is adjusted if the screen refresh is known (or can be
> reasonably inferred). With this, it's basically timing against the
> scheduler at a static 100Hz, as opposed to timing against something
> reasonably assumed to be approximately near the actual refresh rate.
> 

I agree.. but with the XWIN driver, it doesn't matter, since not even X
itself cares about the VBI, AFAIK. So we can safely assume every X11 as
a 100Hz monitor :)

-- 
Elias Pschernig