GNOME Bugzilla – Bug 72880
Incorrect RGBA resampling in layer previews
Last modified: 2005-01-01 21:56:06 UTC
If two pixels have different opacity values (alpha channel), then their colors are not averaged correctly in the layer previews. This affects the layers displayed in the L&C&P dialog box and in the icons shown when a drawable can be selected in a plug-in or script. This is not a serious problem because the previews do not have to be 100% accurate and they are usually so small that the problem is hardly visible, but they are incorrect anyway. See bug #70335 for some test images and a longer description of the problem. This problem affects many other tools and plug-ins.
Changed target milestone of several bugs to 2.0 - these are not features, and don't look to me like blockers for a pre-release, but they have to be addressed before 2.0. Dave.
Bumping the milestone for this bug, and all that depend on it, to 2.2. In the absence of someone actively working on this, there is no point keeping it on the 2.0 milestone. If someone wants to work on this, fixes to this family would also be accepted on the stable branch. Dave.
Bumping the milestone for this bug to Future. In the absence of someone actively working on this, there is no point keeping it on the 2.2 milestone.
Fixed in CVS: 2004-12-15 Michael Natterer <mitch@gimp.org> Sven Neumann <sven@gimp.org> * app/core/gimpdrawable-preview.c (gimp_drawable_preview_scale): fixed RGBA resampling by using premultiplied values for the intermediate accumulation buffer. Fixes bugs #72880 and #72881.