https://bugs.kde.org/show_bug.cgi?id=428090
Bug ID: 428090
Summary: Pattern feature produce lag in brush editor when
parameters are adjusted
Product: krita
Version: 4.4.0
Platform: Appimage
OS: All
Status: REPORTED
Severity: normal
Priority: NOR
Component: Brush engines
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 132626
--> https://bugs.kde.org/attachment.cgi?id=132626&action=edit
images to compare the problem with lag in pattern feature
SUMMARY
Brush editor suffer lacks while editing parameters if we use a normal RGB
pattern. In my desktop with Win10 and i7 the elag is like 0.5 seconds. a bit.
But in the laptop with Kubuntu last update october 2020 and i5 CPU The lag is
arround 3-4 seconds.
Only happens in brush editor while pattern is active. If we deactivate pattern
feature the brush editor works perfectly again.
The problem also dissapear if we use greyscale png images. I give link to 2
images as reference.
Maybe is this maybe i am doing something wrong with RGB saving? let me know
please.
The default Patterns works ok. this lag happens when you copy the png files to
a pattern folder
STEPS TO REPRODUCE
1. Import two patterns included RGB and Greyscale png patterns. or Copy
directly to the pattern folder
https://drive.google.com/drive/folders/1_g_VSbLhGUND7xre1BmXKv-BEnp2LPeH?usp=sharing
2. Open Krita if it is not open
3. Activate the pattern feature and compare with the 2 imported patterns.
OBSERVED RESULT
lag with RGB png file
no lag with greyscale png file
EXPECTED RESULT
SOFTWARE/OS VERSIONS
Windows:10
macOS:
Linux/KDE Plasma:Kubuntu 2020
(available in About System)
KDE Plasma Version:
KDE Frameworks Version:
Qt Version:
ADDITIONAL INFORMATION
Tested in 4.3 and 4.4. Same result.
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