[cairo] cairo design

[Owen Taylor]

On Fri, 2004-04-23 at 17:37, Jon Smirl wrote:
> --- Keith Packard <keithp at keithp.com> wrote:
> > As you correctly surmise, doing this efficiently below the cairo API would 
> > require a cairo wire protocol and a full cairo server on the far side of 
> > the wire -- there's no other representation which could capture the 
> > correct results.  You can't just capture the tesselation and re-use that, 
> > you have to retesselate at each transformation to ensure that the 
> > pixelization of the result was accurate.
> 
> Another solution to this is to introduce display lists into the Cairo API. xlib
> Cairo would keep doing things like it does currently and implement the display
> lists locally. Glitz could use OpenGL displays lists (which get stored on the
> server) and eliminate the net traffic. 
> 
> Shared display lists could also really speed up toolkit drawing. It would be
> good to get these in Cairo early and explain why you need them so that apps will
> take advantage of them.

Or maybe instead we should do some apps and see if they are actually
necessary? Presumably a display list looks a whole lot like a 
"stored group" - I don't imagine that introducing them later compatibly
would be a problem.

Regards,
						Owen

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