[Xorg] SHAPE and Composite Extensions

Keith Packard keithp at keithp.com
Thu Aug 12 08:06:41 PDT 2004

Around 11 o'clock on Aug 12, "Amir Bukhari" wrote:

> The Shape Extension gives Applications the ability to define non-rectangular
> window. What happened when this window is redirect to an off-screen?

The window will be stored in a pixmap of the size of the window as if it 
were unshaped; areas beyond the shape will be undefined.  Automatic 
compositing will copy only those areas within the shape.  Manual 
compositing should respect the shape.  xcompmgr demonstrates how to do 
this by constructing a region from the window clip list.


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