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

[Keith Packard]

Around 10 o'clock on May 18, Jim Gettys wrote:

> One strategy is to recomposite *everything* on the screen...

That's pretty much what the current compositing manager does; translucent windows 
which are damaged cause any related (underlying) windows to be redrawn
transitively.  

Because all of this really depends on efficient rendering of clipped 
operations, I've started poking around the X server insides to do more 
computation post-clip instead of pre-clip.  There's still a lot of places 
which assume the bounding box of the operation is closely approximated by 
the bounding box of the actual arguments.

-keith


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