475737 2023-10-17 13:57:25 +0000 Exporting CMYK32 to PNG leaves vertical lines 2024-03-27 16:54:13 +0000 1 1 2 Applications krita File formats 5.2.0 Other Other RESOLVED FIXED regression, triaged NOR normal --- 1 penguinflyer2222 krita-bugs-null griffinvalley https://invent.kde.org/graphics/krita/-/commit/df9b50fe00dbf8cd66cc2789b787865864579f9b 0 oldest_to_newest 2259534 0 penguinflyer2222 2023-10-17 13:57:25 +0000 SUMMARY As reported on KA (https://krita-artists.org/t/on-export-to-png-blue-areas-now-have-thin-vertical-purple-lines/76230), exporting CMYK32 to PNG leaves discolored vertical lines at intervals. This happens on 5.2.0, but not 5.1.5. It appears to have been caused by commit e152f99c12 (https://invent.kde.org/graphics/krita/-/commit/e152f99c12). STEPS TO REPRODUCE 1. Create a CMYK32 image with a whitish background, draw some blue scribbles. 2. Export to PNG. OBSERVED RESULT Purple lines, and a blueish background. EXPECTED RESULT To look the same as in Krita- with no lines and a whitish background. SOFTWARE/OS VERSIONS Krita 5.2.0 2259777 1 griffinvalley 2023-10-18 10:27:12 +0000 I can confirm this. 2306168 2 dimula73 2024-03-27 16:53:45 +0000 Git commit 03349d25a2f745dfc8d05feafca7ce4f0f3b58dd by Dmitry Kazakov, on behalf of Rasyuqa A. H.. Committed on 27/03/2024 at 16:53. Pushed by dkazakov into branch 'master'. PNG: prevent multiple color conversions M +23 -27 libs/ui/kis_png_converter.cpp https://invent.kde.org/graphics/krita/-/commit/03349d25a2f745dfc8d05feafca7ce4f0f3b58dd 2306169 3 dimula73 2024-03-27 16:54:13 +0000 Git commit df9b50fe00dbf8cd66cc2789b787865864579f9b by Dmitry Kazakov, on behalf of Rasyuqa A. H.. Committed on 27/03/2024 at 16:54. Pushed by dkazakov into branch 'krita/5.2'. PNG: prevent multiple color conversions (cherry picked from commit 03349d25a2f745dfc8d05feafca7ce4f0f3b58dd) M +23 -27 libs/ui/kis_png_converter.cpp https://invent.kde.org/graphics/krita/-/commit/df9b50fe00dbf8cd66cc2789b787865864579f9b