https://bugs.kde.org/show_bug.cgi?id=501932
Dmitry Kazakov <dimul...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Latest Commit| |https://invent.kde.org/grap
| |hics/krita/-/commit/d211566
| |997174204c611148941f8683399
| |c76678
Status|CONFIRMED |RESOLVED
--- Comment #2 from Dmitry Kazakov <dimul...@gmail.com> ---
Git commit d211566997174204c611148941f8683399c76678 by Dmitry Kazakov.
Committed on 27/03/2025 at 13:20.
Pushed by dkazakov into branch 'master'.
Fix speed regression in Dissolve blendmode
When porting to Qt6 qrand() was directly replaced to
QRandomGenerator::global(), while the latter one uses a global
mutex inside, which makes Dissolve blendmode work extremely slow.
Hence we should use a local copy of a random generator to remove this
bottle-neck.
The bug was introduced by:
https://invent.kde.org/graphics/krita/-/commit/af99e90fa8a4dbbb98059c3c8a4d72daffbbda1d
M +14 -2 libs/pigment/compositeops/KoCompositeOpDissolve.h
M +4 -3 plugins/tools/basictools/kis_tool_multihand.cpp
M +2 -0 plugins/tools/basictools/kis_tool_multihand.h
https://invent.kde.org/graphics/krita/-/commit/d211566997174204c611148941f8683399c76678
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