clip masks/simulating transparency

[Xavier Bestel]

On Tue, 2011-05-31 at 09:58 +0200, Xavier Bestel wrote:
> On Tue, 2011-05-31 at 15:28 +1000, Amy C wrote:
> > Can anyone think of an alternative way to do this (have the penguins
> > walk over a screen of my choosing and restore said window after
> > they've passed through, without too much flickering?
> 
> You should use compositing of an ARGB pixmap. It will only work with a
> compositor but nowadays all desktop use one (Compiz/Unity,
> Mutter/GnomeShell, Kwin). Compositing is implemented much more
> efficiently than windows shaping.

My bad, I looked at the source, it doesn't use shaped windows.
Still, using composited windows per pinguin may be a win.

	Xav