Re: A possible problem with an external compositing manager

Around 23 o'clock on Nov 21, Soeren Sandmann wrote:

> > Assuming our compositing manager can do screen updates within some 
> > reasonable time bound, the GetImage trick will do the same here, with 
> > perhaps a longer lag.
> 
> Only if GetImage actually is actually guaranteed to return the
> contents of the root window, right?

Of course, GetImage on the root will return root window contents, but 
because the compositing manager is an external agent, there's no assurance 
that those contents will contain the results of any specific application 
rendering; that will be delayed an arbitrary amount by the compositing 
manager.

We have no current mechanism to discover when specific application 
rendering results are visisble to the user.  We need to figure out how to 
make this possible, and Composite just throws another wrench in the works.

-keith