https://bugs.kde.org/show_bug.cgi?id=514871
Bug ID: 514871
Summary: [regression] Canvas runs off when click+hold very
zoomed in (ex. when doing pixel art operations)
Classification: Applications
Product: krita
Version First git master (please specify the git hash!)
Reported In:
Platform: Compiled Sources
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Tools
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Canvas runs off when you zoom in the canvas and click and hold in the rectangle
tool, line tool, rectangular selection tool, gradient tool, bezier curves tool,
and probably many others. (It even runs off if you click and hold the polygonal
selection tool though it's not how you're supposed to use it). It makes many
tools completely unusable in those conditions, and it's a regression.
I believe it's related to the warnings we now see in the console about the
offsets.
That warning happens only once/twice per opening Krita but I noticed weirdness
about pixel art operations roughly around the time that warning started to show
up in my console.
"The imageRectInWidgetPixels topLeft() does not match the documentOffsetF!
imageRectInWidgetPixels: QRectF(-0.6,-0.6 0x0)
documentOffsetF: QPointF(1,1)
Dialog "krita/generators/seexpr" has a widget without an object name:
QScrollBar(0x5e0e79d37ef0)
Dialog "krita/generators/seexpr" has a widget without an object name:
QScrollBar(0x5e0e6a886d60)
Dialog "krita/generators/seexpr" has a widget without an objectName:
QScrollBar(0x5e0e79d37ef0)
Dialog "krita/generators/seexpr" has a widget without an objectName:
QScrollBar(0x5e0e6a886d60)
QPainter::begin: Paint device returned engine == 0, type: 2
QPainter::setRenderHint: Painter must be active to set rendering hints
QPainter::setWorldTransform: Painter not active
The imageRectInWidgetPixels topLeft() does not match the documentOffsetF!
imageRectInWidgetPixels: QRectF(-0.6,-0.6 0x0)
documentOffsetF: QPointF(1,1)
corrected offset: QPointF(-1757,-208)"
SUMMARY
STEPS TO REPRODUCE
1. Create a 2000x2000 (or 200x200, or any other) canvas
2. Zoom in enough to see the pixel grid, one pixel should be around 0.5-1cm on
your screen (comfortable zoom for pixel art) (it's around 4000% on 2000x2000
canvas)
3. Try to create a rectangle of size 5x5 using the Rectangle Tool
OBSERVED RESULT
Canvas runs off and you can't make any precise rectangle.
EXPECTED RESULT
You can make a precise rectangle.
SOFTWARE/OS VERSIONS
git master: e8631b83ba
Krita
Version: 5.3.0-prealpha (git 249e1df)
Hidpi: true
Qt
Version (compiled): 5.15.7
Version (loaded): 5.15.7
OS Information
Build ABI: x86_64-little_endian-lp64
Build CPU: x86_64
CPU: x86_64
Kernel Type: linux
Kernel Version: 6.5.0-45-generic
Pretty Productname: Ubuntu 20.04.6 LTS
Product Type: ubuntu
Product Version: 20.04
Desktop:
Appimage build: Yes
Locale
Languages: en_US, en, en_Latn_US
C locale: en_US.UTF-8
QLocale current: en
QLocale system: en
QTextCodec for locale: UTF-8
OpenGL Info
Qt Platform Name: "xcb"
Vendor: "Mesa/X.org"
Renderer: "llvmpipe (LLVM 12.0.0, 256 bits)"
Driver version: "4.5 (Core Profile) Mesa 21.2.6"
Shading language: "4.50"
Requested format: QSurfaceFormat(version 3.3, 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::CompatibilityProfile)
Current format: QSurfaceFormat(version 4.5, 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)
GL version: 4.5
Supports deprecated functions false
Is OpenGL ES: false
supportsBufferMapping: true
supportsBufferInvalidation: true
forceDisableTextureBuffers: false
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