https://bugs.kde.org/show_bug.cgi?id=458475
Bug ID: 458475
Summary: Performance highly degraded with filters
Product: krita
Version: 5.1.0
Platform: Other
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: Layer Stack
Assignee: krita-bugs-n...@kde.org
Reporter: grum...@grum.fr
Target Milestone: ---
SUMMARY
For a simple combination of filters, Krita took 10minutes to refresh
document....
STEPS TO REPRODUCE
1. Create a document large enough (7000x5000)
2. Add a group layer "G1"
3. In group layer "G1", add a paint layer "PL1"; fill it with a color
4. On paint layer "PL1", add a transform mask ("mesh transform") "TM1"
5. In group layer "G1", add a filter layer "FL1" (type gaussian blur with
default value of 5pixels)
6. Select paint layer "PL1"
7. Fill it with another color
OBSERVED RESULT
>From step 7, it took ~10minutes of "updating" process on my computer...
EXPECTED RESULT
The gaussian filter normally took a second to be applied
The transform mask normally took 2-3 second to be applied
Combination of both shouldn't take 10minutes to be applied
SOFTWARE/OS VERSIONS
Krita
Version: 5.2.0-prealpha (git 785619b)
Hidpi: false
Qt
Version (compiled): 5.12.12
Version (loaded): 5.12.12
OS Information
Build ABI: x86_64-little_endian-lp64
Build CPU: x86_64
CPU: x86_64
Kernel Type: linux
Kernel Version: 4.19.0-21-amd64
Pretty Productname: Debian GNU/Linux 10 (buster)
Product Type: debian
Product Version: 10
Desktop: KDE
Hardware Information
GPU Acceleration: auto
Memory: 64389 Mb
Number of Cores: 24
Swap Location: /tmp
Built for: sse2
Base instruction set: sse2
Supported instruction sets: fma3+avx2 avx2 fma3+avx avx fma4 fma3+sse4.2
sse4.2 sse4.1 ssse3 sse3 sse2
Current Settings
Current Swap Location: /tmp
Current Swap Location writable: true
Undo Enabled: true
Undo Stack Limit: 350
Use OpenGL: true
Use OpenGL Texture Buffer: true
Disable Vector Optimizations: false
Disable AVX Optimizations: false
Canvas State: OPENGL_SUCCESS
Autosave Interval: 600
Use Backup Files: true
Number of Backups Kept: 4
Backup File Suffix: ~
Backup Location: Same Folder as the File
Backup Location writable: false
Use Win8 Pointer Input: false
Use RightMiddleTabletButton Workaround: false
Levels of Detail Enabled: false
Use Zip64: false
ADDITIONAL INFORMATION
It can be reproduced with different combination of filter layer, filter mask,
transform mask...
This combination is really representative of problem (some other combination
like 2 gaussian filters are less visible)
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