[Bug 48548] Re: broken gaussian blur

[Adam Sampson]

This is an upstream bug in GIMP's Gaussian blur plugin -- it got fixed in 2.2.13. See:
http://bugzilla.gnome.org/show_bug.cgi?id=343047

And here's the commit:
http://cvs.gnome.org/viewcvs/gimp/plug-ins/common/gauss.c?r1=1.18.2.3&r2=1.18.2.4

It'd be nice if the fix could make it into LTS's GIMP, since it makes
Gaussian blur pretty much useless as-is; we've just tried to get a bunch
of schoolkids doing graphical stuff using Ubuntu and got hit by this.

It's very easy to reproduce: create a new image. Fill the background
red. Create a new transparent layer. Draw a sharp-edged green squiggle
on it. Select all and do a 15px Gaussian blur. On 2.2.11 you get a black
halo around the squiggle; on 2.2.13 you get a smooth blur.

-- 
broken gaussian blur
https://launchpad.net/bugs/48548