https://bugs.kde.org/show_bug.cgi?id=404133
Bug ID: 404133
Summary: Artifacts when painting in RGB 32-bit float/channel
Product: krita
Version: nightly build (please specify the git hash!)
Platform: Manjaro
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Brush engines
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 117943
--> https://bugs.kde.org/attachment.cgi?id=117943&action=edit
Exported image showing artifacts
I attached an image to illustrate. The .kra file is beyond the size limit. I
only used paint and fill layers with normal blend mode.
Visual artifacts occur in the nightly appimage when painting in RGB 32-bit
float - not however in 16f, 16i or 8i and also not in LAB, CYMK, XYZ or
Grayscale in any combination. It is most obvious with a pixel engine brush
using wide spacing, but also occurs with the particle brush and the tangent
normal brush. The tangent normal brush seems to be an exception, here the
artifacts seem to apply once per painted brush tip instead of aligning to the
canvas. I didn't notice it with the shape, sketch or color smudge engines.
In 4.1.7 this problem didn't occur using the same file.
Version: 4.2.0-pre-alpha (git b8d64d3)
Qt
Version (compiled): 5.10.0
Version (loaded): 5.10.0
OS Information
Build ABI: x86_64-little_endian-lp64
Build CPU: x86_64
CPU: x86_64
Kernel Type: linux
Kernel Version: 4.20.7-1-MANJARO
Pretty Productname: Manjaro Linux
Product Type: manjaro
Product Version: unknown
OpenGL Info
Vendor: NVIDIA Corporation
Renderer: "GeForce GTX 860M/PCIe/SSE2"
Version: "4.6.0 NVIDIA 415.27"
Shading language: 4.60 NVIDIA
Requested format: QSurfaceFormat(version 3.0, options
QFlags<QSurfaceFormat::FormatOption>(DeprecatedFunctions), depthBufferSize 24,
redBufferSize -1, greenBufferSize -1, blueBufferSize -1, alphaBufferSize -1,
stencilBufferSize 8, samples -1, swapBehavior
QSurfaceFormat::SwapBehavior(DoubleBuffer), swapInterval 0, colorSpace
QSurfaceFormat::ColorSpace(DefaultColorSpace), profile
QSurfaceFormat::OpenGLContextProfile(CompatibilityProfile))
Current format: QSurfaceFormat(version 4.6, options
QFlags<QSurfaceFormat::FormatOption>(DeprecatedFunctions), depthBufferSize 24,
redBufferSize 8, greenBufferSize 8, blueBufferSize 8, alphaBufferSize 0,
stencilBufferSize 8, samples -1, swapBehavior
QSurfaceFormat::SwapBehavior(DoubleBuffer), swapInterval 0, colorSpace
QSurfaceFormat::ColorSpace(DefaultColorSpace), profile
QSurfaceFormat::OpenGLContextProfile(CompatibilityProfile))
Version: 4.6
Supports deprecated functions true
is OpenGL ES: false
Hardware Information
GPU Acceleration: auto
Memory: 15951 Mb
Number of Cores: 8
Swap Location: /tmp
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