Re: Future features (was Re: Discussing issues)

[Keith Packard <keithp@keithp.com>]

Around 17 o'clock on Apr 16, Havoc Pennington wrote:

> Something fully general that said "take this region of screen, scale
> it by factor N, and draw it to this drawable" certainly sounds nicer 
> than the damage extension, I can't argue.

I don't quite recall the discussions about the damage extension, but 
I think something very like your damage extension will be needed so that 
applications have control over when updates occur and how the bits are 
manipulated.  What is needed for a magnification application is 'save 
unders' so that the contents of the screen obscured by the magnification 
application are available for magnification.

For off-the-spot magnification, the damage extension and the existing 
Render extension (for the scaling) are sufficient.

-keith


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