GNOME Bugzilla – Bug 779827
Brushes in Symmetry Tiling mode are off by one pixel
Last modified: 2017-03-10 13:08:52 UTC
Symmetry Tiling mode appears to have a minor bug; when clicking with the Pencil tool, the drawn area is 1 pixel right and 1 pixel down from where the mouse was clicked. Sometimes it's only off in one direction. The Brush tool on radius 1 always draws a 2x2 box. (Maybe it's off by half a pixel?)
This isn't really noticeable with larger brush sizes, but when doing pixel art it makes the symmetry tiling tool nigh-unusable.
Mirror and Mandala modes seem unaffected.
Commit 8ca855d (git master at time of posting), built from the AUR - https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=gimp-git
It looks like the commit I built is actually 8e68ca85 - the first three characters got truncated in the version string somehow. I'd imagine this is an issue with the PKGBUILD and not GIMP, but adding the note since I got the hash wrong in the first comment.
Hi! I'll have a look. Thanks for the report.
Author: Jehan <firstname.lastname@example.org>
Date: Fri Mar 10 03:56:57 2017 +0100
Bug 779827 - Brushes in Symmetry Tiling mode are off by one pixel.
Computation for tiled brush position has to be done in integer, not
double, to avoid funky type conversion rounding.
Great, thanks for the quick fix! Keep up the good work.