clip masks/simulating transparency

[Xavier Bestel]

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.

	Xav