[OpenJDK 2D-Dev] X11 uniform scaled wide lines and dashed lines; STROKE_CONTROL in Pisces

Denis Lila dlila at redhat.com
Thu Sep 2 22:20:57 UTC 2010

> Do we use Pisces for non-AA?  Pisces should clock in slower for AA than 
> non-AA, but I think we use one of the other pipes (not Ductus) for 
> non-AA and maybe it just isn't as good as Pisces?

We definitely use it for non-AA.
I traced it.


----- "Jim Graham" <james.graham at oracle.com> wrote:

> On 9/2/2010 2:43 PM, Denis Lila wrote:
> > Actually, I had a question about the test I wrote which takes 20
> seconds. When
> > I turned antialiasing on, the test dropped from 20 seconds to 2.5.
> This is very
> > puzzling, since antialiasing is a generalization of non-antialiased
> rendering
> > (a generalization where we pretend there are 64 times more pixels
> than there
> > actually are). Of course, the paths followed after pisces for AA and
> non-AA are
> > completely different, but whatever came after pisces in the non-AA
> case would
> > have the same input as Renderer has in the AA case (input gotten
> from Stroker).
> > Can you take a guess as to what was causing such a large
> difference?

> I think Pisces was integrated only as a Ductus replacement which means
> it was used only for AA, but check if I'm mistaken...
> 			...jim

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