Re: Composition [was Re: gnome-session proposal]

[Bastien Nocera <hadess hadess net>]

On Thu, 2008-06-26 at 23:02 +0100, Iain * wrote:
> On Thu, Jun 26, 2008 at 10:49 PM, Patryk Zawadzki <patrys pld-linux org> wrote:
> 
> > Nah, one thing about a compositor is that it keeps off-screen copies
> > of all the windows so it does not have to invalidate regions when the
> > stacking order changes.
> 
> To be totally honest, I've never really thought of that as being all
> that important.
> I don't think I've ever thought "You know, I wish that window would
> redraw faster" when I've restacked it
> but maybe thats just me.
> 
> If a compositor just kept off screen copies of windows, and didn't
> have live previews etc etc, would you honestly use it?

I think Patryk was thinking more of the case where the application
"hangs" and doesn't redraw. Which looks really bad. Compositors fix
that.