[cairo] Mozilla on Cairo

[Alexander Larsson]

On Fri, 2005-06-10 at 09:23 -0700, Carl Worth wrote:
> On Fri, 10 Jun 2005 15:07:59 +1200, Robert O'Callahan wrote:
> > So far the suggestions have been:
> > 1) force all edges to coincide with pixel edges at layout time
> > 2) draw without coverage-based antialiasing and apply FSAA if resources
> > allow
> > 3) perform some sort of full-scene analysis (either in the app or in
> > cairo) to identify shared edges and deal with them
> 
> There was another suggestion:
> 
> 4) Draw all objects front to back, taking advantage of
>    CAIRO_OPERATOR_SATURATE.
> 
> This won't be entirely general as it will only work if all objects
> have a uniform Z value, (but I assume all mozilla objects have that
> property).
> 
> This approach is exactly the way that OpenGL solves seam problems, (as
> far as I understand), and as such it will be quite amenable to
> hardware acceleration.

Does this really work for partially transparent objects?

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 Alexander Larsson                                            Red Hat, Inc 
                   alexl at redhat.com    alla at lysator.liu.se 
He's a short-sighted day-dreaming dog-catcher haunted by an iconic dead 
American confidante She's a mentally unstable streetsmart mermaid with an evil 
twin sister. They fight crime!