https://bugs.kde.org/show_bug.cgi?id=475111
Bug ID: 475111
Summary: Pen stroke lacks pressure and has significant delay on
first stroke if under filter layer.
Classification: Applications
Product: krita
Version: nightly build (please specify the git hash!)
Platform: Kubuntu
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Filter Layers
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 162012
--> https://bugs.kde.org/attachment.cgi?id=162012&action=edit
Filter layer bug example file
SUMMARY
After moving the canvas in any way, (panning, zooming, rotating), the first and
only the first brush stroke is severely delayed and, if it's a tablet pen,
occasionally lacks pen pressure. A less severe version of the bug occurs if the
layer is not in a group.I've divided them into bug 1 and 2.
Bug 1.
If the layer is in a group and under a filter layer, this bug happens every
time the canvas is moved.
Bug 2.
If the layer is outside of a group but under a filter later, the bug only
happens the first time the layer is moved under the filter layer in the stack.
STEPS TO REPRODUCE
BUG 1
1. Open the attached file, select the 'Layer' Layer.
2. Move the canvas in any way
3. Draw a brush stroke.
Observe that the pen lacks pressure sensitivity, and the stroke itself is
heavily delayed in rendering.
BUG 2
1. Open the attached file, move both 'Filter' and "Layer' layers outside of the
group.
2. Move the 'Layer' layer above the filter layer
3. Move the 'Layer' layer below the filter layer.
4. Draw a brush stroke
Observe that the same bug as bug #1 occurs, but that it only happens once and
never again until the layer is moved again.
System information
--------------------------------
Krita
Version: 5.3.0-prealpha (git 27302a3)
Qt
Version (compiled): 5.15.7
Version (loaded): 5.15.7
OS Information
Build ABI: x86_64-little_endian-lp64
Kernel Version: 6.2.0-33-generic
Pretty Productname: Ubuntu 23.04
OpenGL Info
Vendor: "NVIDIA Corporation"
Renderer: "NVIDIA GeForce RTX 4090/PCIe/SSE2"
Driver version: "4.6.0 NVIDIA 535.104.05"
Shading language: "4.60 NVIDIA"
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 4.6, 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)
GL version: 4.6
Supports deprecated functions false
Is OpenGL ES: false
supportsBufferMapping: true
supportsBufferInvalidation: true
forceDisableTextureBuffers: false
QPA OpenGL Detection Info
supportsDesktopGL: true
supportsOpenGLES: true
isQtPreferOpenGLES: false
Detected renderers:
(Supported) NVIDIA GeForce RTX 4090/PCIe/SSE2 (OpenGL ES 3.2 NVIDIA
535.104.05)
(Supported) NVIDIA GeForce RTX 4090/PCIe/SSE2 (4.6.0 NVIDIA 535.104.05)
Hardware Information
Memory: 61 Gb
Cores: 32
Swap: /tmp
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