[Xorg] Re: Damage/Composite + direct rendering clients

[Keith Packard]

Around 9 o'clock on May 17, Alex Deucher wrote:

> Many video overlays support alpha blending with the graphics layer,
> it's just that support was never implemented since xfree86 never
> supported it.

Composite doesn't really expose things in a way that would make this 
hardware capability usable.

Instead, it expects the video to be painted into the window pixmap so that 
those pixels can be composed to form the screen image.

-keith


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