https://bugs.kde.org/show_bug.cgi?id=414025
Bug ID: 414025
Summary: Jagged lines when canvas is too big and zoom out, it
makes impossible to draw a smooth circle
Product: krita
Version: 4.2.7.1
Platform: Other
OS: macOS
Status: REPORTED
Severity: grave
Priority: NOR
Component: Brush engines
Assignee: krita-bugs-n...@kde.org
Reporter: liss...@gmail.com
Target Milestone: ---
Created attachment 123838
--> https://bugs.kde.org/attachment.cgi?id=123838&action=edit
big circle was made at 50% zoom, smaller circle was done at 200% zoom, and the
smallest one at 300% zoom approx.
SUMMARY
Lines are jagged when canvas is too big and zoom out. It results impossible to
draw a circle
STEPS TO REPRODUCE
1. Create a big canvas (2160x2160)
2. Zoom out so you see the whole canvas in the screen
3. Draw a circle (relatively fast), using the notebook trackpad, a mouse or a
drawing tablet (I've try with these three and the result is the same - the pen
pressure is correctly detected when using the tablet, but the circles are still
not smooth, same shape as drawing with the mouse or trackpad)
OBSERVED RESULT
Lines are really jagged, it is impossible to draw a circle, it looks more like
a polygon (see image attached, big circle was made at 50% zoom, smaller circle
was done at 200% zoom, and the smallest one at 300% zoom)
EXPECTED RESULT
Smooth circle
SOFTWARE/OS VERSIONS
Windows:
macOS: macOS Mojave (10.14)
Linux/KDE Plasma:
(available in About System)
KDE Plasma Version:
KDE Frameworks Version:
Qt Version: 5.12.5
ADDITIONAL INFORMATION
Krita
Version: 4.2.7.1
Languages: en_NZ
Hidpi: true
Qt
Version (compiled): 5.12.5
Version (loaded): 5.12.5
OS Information
Build ABI: x86_64-little_endian-lp64
Build CPU: x86_64
CPU: x86_64
Kernel Type: darwin
Kernel Version: 18.7.0
Pretty Productname: macOS Mojave (10.14)
Product Type: osx
Product Version: 10.14
Hardware Information
GPU Acceleration: desktop
Memory: 8192 Mb
Number of Cores: 4
11 Nov 2019 21:40:29 +1300: Created image "Unnamed", 2160 * 2160 pixels, 300
dpi. Color model: 8-bit integer/channel RGB/Alpha (sRGB-elle-V2-srgbtrc.icc).
Layers: 2
11 Nov 2019 21:40:29 +1300: Instant Preview Setting: 0
11 Nov 2019 21:40:29 +1300: Disabled smoothing.
11 Nov 2019 21:40:29 +1300: Disabled smoothing.
11 Nov 2019 21:40:29 +1300: Disabled smoothing.
11 Nov 2019 21:40:29 +1300: Instant Preview Setting: 0
11 Nov 2019 21:40:30 +1300: Instant Preview Setting: 0
11 Nov 2019 21:41:42 +1300: Saving Document as /Users/username/test3.kra
(mime: application/x-krita). 2160 * 2160 pixels, 3 layers. 101 frames, 24
framerate. Export configuration: No configuration
11 Nov 2019 21:41:42 +1300: Converting from application/x-krita to
application/x-krita. Location: /Users/username/test3.kra. Real location:
/Users/username/test3.kra. Batchmode: 0. Configuration: none
11 Nov 2019 21:41:42 +1300: Completed saving /Users/username/test3.kra (mime:
application/x-krita). Result: OK
11 Nov 2019 21:42:32 +1300: Closing.
OpenGL Info
Vendor: "Intel Inc."
Renderer: "Intel(R) HD Graphics 615"
Version: "4.1 INTEL-12.10.14"
Shading language: "4.10"
Requested format: QSurfaceFormat(version 3.2, options
QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize 24, redBufferSize 8,
greenBufferSize 8, blueBufferSize 8, alphaBufferSize 8, stencilBufferSize 8,
samples -1, swapBehavior QSurfaceFormat::DoubleBuffer, swapInterval 0,
colorSpace QSurfaceFormat::DefaultColorSpace, profile
QSurfaceFormat::CoreProfile)
Current format: QSurfaceFormat(version 4.1, options
QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize 24, redBufferSize 8,
greenBufferSize 8, blueBufferSize 8, alphaBufferSize 8, stencilBufferSize 8,
samples 0, swapBehavior QSurfaceFormat::DoubleBuffer, swapInterval 0,
colorSpace QSurfaceFormat::DefaultColorSpace, profile
QSurfaceFormat::CoreProfile)
Version: 4.1
Supports deprecated functions false
is OpenGL ES: false
QPA OpenGL Detection Info
supportsDesktopGL: true
supportsOpenGLES: false
isQtPreferOpenGLES: true
== log ==
Supported renderers: QFlags(0x2)
Surface format preference list:
* QSurfaceFormat(version 3.2, options QFlags<QSurfaceFormat::FormatOption>(),
depthBufferSize 24, redBufferSize 8, greenBufferSize 8, blueBufferSize 8,
alphaBufferSize 8, stencilBufferSize 8, samples -1, swapBehavior
QSurfaceFormat::DoubleBuffer, swapInterval 0, colorSpace
QSurfaceFormat::DefaultColorSpace, profile QSurfaceFormat::CoreProfile)
2
Probing format... QSurfaceFormat::DefaultColorSpace 2
Found format: QSurfaceFormat(version 3.2, options
QFlags<QSurfaceFormat::FormatOption>(), depthBufferSize 24, redBufferSize 8,
greenBufferSize 8, blueBufferSize 8, alphaBufferSize 8, stencilBufferSize 8,
samples -1, swapBehavior QSurfaceFormat::DoubleBuffer, swapInterval 0,
colorSpace QSurfaceFormat::DefaultColorSpace, profile
QSurfaceFormat::CoreProfile)
2
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