https://bugs.kde.org/show_bug.cgi?id=437950
Bug ID: 437950
Summary: Huge pattern size slows down the whole brush editor
Product: krita
Version: git master (please specify the git hash!)
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Brush engines
Assignee: krita-bugs-n...@kde.org
Reporter: tamtamy.tym...@gmail.com
Target Milestone: ---
SUMMARY
When a huge pattern is selected in Texture->Pattern tab in brush editor, the
rest of the editor is very very slow. Most probably because either there is no
signal compressor, or even with the signal compressor the rate of repainting a
stroke is too high for Krita to be able to paint it.
Note that the same brush doesn't really have trouble painting on the canvas in
small sizes.
STEPS TO REPRODUCE
1. Download Flow's bundle 1.0 from here:
https://krita-artists.org/t/flows-mixer-concept-brushes-v1-1-work-in-progress-krita-5/24304
. If it cannot be downloaded, any big pattern (1024x1024, or maybe 2048x2048)
in .jpg format (not sure if format is important) will do.
2. Select f) Bristles-3 Large Smooth.
3. Confirm you can change the Spacing in Brush Tip tab easily.
4. Select "TheFlow Canvas 01".
OBSERVED RESULT
All sliders are super slow now. See Brush Tip -> Spacing, for example.
If you close the editor (with still usually high Spacing) and start painting,
you'll see that the brush is painting with usual speed (very responsive).
EXPECTED RESULT
All sliders are still fast and responsive.
SOFTWARE/OS VERSIONS
Krita
Version: 5.0.0-prealpha (git 626af155fb)
Languages: pl, pl_PL, pl
Hidpi: true
Qt
Version (compiled): 5.12.8
Version (loaded): 5.12.8
OS Information
Build ABI: x86_64-little_endian-lp64
Build CPU: x86_64
CPU: x86_64
Kernel Type: linux
Kernel Version: 5.4.0-58-generic
Pretty Productname: Linux Mint 20.1
Product Type: linuxmint
Product Version: 20.1
Desktop: X-Cinnamon
OpenGL Info
Vendor: "Intel"
Renderer: "Mesa Intel(R) Iris(R) Plus Graphics (ICL GT2)"
Version: "4.0 (Compatibility Profile) Mesa 20.2.6"
Shading language: "4.60"
Requested format: QSurfaceFormat(version 3.0, options
QFlags<QSurfaceFormat::FormatOption>(DeprecatedFunctions), depthBufferSize 24,
redBufferSize 8, greenBufferSize 8, blueBufferSize 8, alphaBufferSize 8,
stencilBufferSize 8, samples -1, swapBehavior QSurfaceFormat::DoubleBuffer,
swapInterval 0, colorSpace QSurfaceFormat::DefaultColorSpace, profile
QSurfaceFormat::CompatibilityProfile)
Current format: QSurfaceFormat(version 4.0, options
QFlags<QSurfaceFormat::FormatOption>(DeprecatedFunctions), depthBufferSize 24,
redBufferSize 8, greenBufferSize 8, blueBufferSize 8, alphaBufferSize 8,
stencilBufferSize 8, samples -1, swapBehavior QSurfaceFormat::DoubleBuffer,
swapInterval 0, colorSpace QSurfaceFormat::DefaultColorSpace, profile
QSurfaceFormat::CompatibilityProfile)
Version: 4.0
Supports deprecated functions true
is OpenGL ES: false
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