Re: About Compositing

[Bill Haneman <Bill Haneman Sun COM>]

Soeren Sandmann wrote:

> Bill Haneman wrote:
>
> > One worry/concern to keep in mind is that at least for the forseeable 
> > future we need to keep the metacity-compositing stuff 
> > eye-candy/optional only.  The reason for this IMO is not just that 
> > COMPOSITE isn't yet universal, but that accessibility magnification 
> > will need to use compositing for its own purposes; specifically, the 
> > magnification service will need to be the compositing manager. 
>
>
> Why does it need to *be* the compositing manager? Isn't it sufficient 
> for the magnifier to
> just know that there *is* a compositing manager (so that the contents 
> of windows is
> available offscreen?)

No, the magnifier needs to do the actual compositing, in order to 
control the way the windows are displayed onscreen. 

I didn't think a random client could access the uncomposited pixmap 
contents of the window tree.  Anyhow, for performance reasons we 
wouldn't want to, it should be the compositing manager itself.

Bill

> Soren