[compiz] decoration mask

[David Reveman]

On Fri, 2007-03-02 at 00:28 -0600, Travis Watkins wrote:
> Beryl has this mask called PAINT_WINDOW_DECORATION_MASK that the
> decoration plugin sets when it's drawing the decorator windows. It
> lets you apply an effect to a window that doesn't affect the
> decorations. Does this sound like something that would be useful in
> compiz?

Some of my plans for the drawing infrastructure in compiz will solve
this problem nicely so if we can live without it for now, I'd be happy.

- David