[cairo] Premultiplied transparency causes streaks in images

Paril paril at alteredsoftworks.com
Fri Nov 12 05:11:51 PST 2010

Hmm, well it looks interesting, not a big fan of graph-based processing
though, the API just seems like a front to put together the XML data and
then compile it. I was more or less looking for something just like Cairo
where I can.. draw things rather simply. It's surprising that I can't seem
to find anything for this already. The C# binding for GEGL, I can't even
find the .cs files in the git root..

I'll keep looking I guess.


On Fri, Nov 12, 2010 at 7:50 AM, Andrea Canciani <ranma42 at gmail.com> wrote:

> On Fri, Nov 12, 2010 at 1:41 PM, Paril <paril at alteredsoftworks.com> wrote:
> > I see, so it's the ImageSurface part.
> >
> > I've been fighting this issue for a week now. I started out with GDI+,
> and
> > now Cairo, both of which have the same underlying problem (from what I
> > understand from what you're telling me): floating point pixel data.
> >
> > Are there no other surfaces in Cairo's arsenal that I can use here? I see
> a
> > lot of other stuff like Xlib, Glitz, Xcb, does any of this give me
> anything
> > I could work with perhaps?
> Right now, I'm afraid that there is no portable way to have floating point
> surfaces in cairo.
> >
> > I'd look at GIMP but with such a large project I'm not exactly sure where
> > I'd look. There has to be something available to me that supports what
> I'm
> > looking to do..
> I think that GEGL http://www.gegl.org/ is probably what you're looking
> for.
> Andrea
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