https://bugs.kde.org/show_bug.cgi?id=464256
Bug ID: 464256
Summary: Tablet pen is incorrectly offset when using
non-default QT_SCALE_FACTOR in recent builds
Classification: Applications
Product: krita
Version: nightly build (please specify the git hash!)
Platform: Kubuntu
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: * Unknown
Assignee: krita-bugs-n...@kde.org
Reporter: i...@ralek.art
Target Milestone: ---
My current nightly build works fine, build 8e8c855 from a little while ago.
When attempting to update to a newer nightly ( 5c98a72 ), I found that my pen
is incorrectly offset when using the environment variable QT_SCALE_FACTOR set
to anything but 1. For me it is set to 1.5. The distance the pen is offset
seems to be proportional to this value. Krita seems to believe the pen is
further toward the bottom of the screen than anticipated.
As my tablet is 4k and my main monitor is not, and KDE does not currently
support fractional scaling, I must scale Krita using QT_SCALE_FACTOR in a bash
script before launch. This has worked fine for a couple years now, but no
longer works and I'm not sure exactly which build the problem began.
OS Information
Build ABI: x86_64-little_endian-lp64
Build CPU: x86_64
CPU: x86_64
Kernel Type: linux
Kernel Version: 5.19.0-29-generic
Pretty Productname: Ubuntu 22.10
Product Type: ubuntu
Product Version: 22.10
OpenGL Info
Vendor: "NVIDIA Corporation"
Renderer: "NVIDIA GeForce RTX 4090/PCIe/SSE2"
Version: "4.6.0 NVIDIA 525.60.11"
Shading language: "4.60 NVIDIA"
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 4.6, 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: 4.6
Supports deprecated functions true
is OpenGL ES: false
supportsBufferMapping: true
supportsBufferInvalidation: true
forceDisableTextureBuffers: false
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