Strange speed differences on composite

[Zack Rusin]

On Wednesday 15 February 2006 02:07, Carsten Haitzler wrote:
> algorithms. tehcnically speakin xrender COULD get smart and learn to
> cache parts of drawables in system ram and use dirty masks (or tiles)
> to know when they invalidate to speed this up and avoid the read from
> video ram wherever possible - but this is going to be very involved
> code.

This is not something XRender could or more importantly should do. That 
is something that acceleration architecture and its memory management 
code should be doing. 
Interestingly enough this is something Exa is already doing (even though 
the migration semantics are a little random, hopefully Eric will fix 
that pretty soon).

Zack

-- 
With reasonable men I will reason; with humane men I will plead; but to 
tyrants I will give no quarter. -- William Lloyd Garrison