https://bugs.kde.org/show_bug.cgi?id=449092
Bug ID: 449092
Summary: Fuzzy canvas with trilinear/high quality filtering
Product: krita
Version: 5.0.2
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: OpenGL Canvas
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 145874
--> https://bugs.kde.org/attachment.cgi?id=145874&action=edit
Example KO with fuzzy canvas (trilinear filtering)
SUMMARY
In some situation, canvas is fuzzy/blurry.
The case occurs when Canvas Graphics Acceleration is enabled, with Open GL, for
*trilinear filtering* and *high quality filtering* modes.
With *bilinear filtering* and *nearest neighbour* everything is fine.
STEPS TO REPRODUCE
There's different method to reproduce it (painting, move tool, ...)
Here's the "move tool" steps (easy to reproduce and easy to check the problem):
1) create a big document (A4 @ 600dpi here)
2) zoom to fit
3) draw some abstract thing with *b) basic-5* brush for example
4) select move tool
5) start to move
6) zoom in ==> canvas is fuzzy, and it's not possible to work with displayed
content
7) select another layer/go back to current layer
8) start to move: canvas is now properly rendered
OBSERVED RESULT
If *trilinear filtering* or *high quality filtering* is active, on step 7)
canvas is fuzzy/blurry
If *bilinear filtering* or *nearest neighbour* is active, on step 7) canvas is
properly rendered
EXPECTED RESULT
In all case, whatever the scale filter applied, the canvas must be properly
rendered
SOFTWARE/OS VERSIONS
------------------------------------------------
Krita
Version: 5.0.2
Languages: en_GB, en, fr, en_GB, en
Hidpi: false
Qt
Version (compiled): 5.12.12
Version (loaded): 5.12.12
OS Information
Build ABI: x86_64-little_endian-lp64
Build CPU: x86_64
CPU: x86_64
Kernel Type: linux
Kernel Version: 4.19.0-18-amd64
Pretty Productname: Debian GNU/Linux 10 (buster)
Product Type: debian
Product Version: 10
Desktop: KDE
OpenGL Info
Vendor: "NVIDIA Corporation"
Renderer: "GeForce GTX 1060 3GB/PCIe/SSE2"
Version: "4.6.0 NVIDIA 418.211.00"
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
Extensions:
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"GL_ARB_internalformat_query"
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"GL_NV_register_combiners"
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QPA OpenGL Detection Info
supportsDesktopGL: true
supportsOpenGLES: true
isQtPreferOpenGLES: false
useBufferInvalidation (config option): false
Hardware Information
GPU Acceleration: auto
Memory: 64389 Mb
Number of Cores: 24
Swap Location: /tmp
Current Settings
Current Swap Location: /tmp
Current Swap Location writable: true
Undo Enabled: true
Undo Stack Limit: 350
Use OpenGL: true
Use OpenGL Texture Buffer: true
Disable Vector Optimizations: false
Disable AVX Optimizations: false
Canvas State: OPENGL_SUCCESS
Autosave Interval: 60
Use Backup Files: true
Number of Backups Kept: 4
Backup File Suffix: ~
Backup Location: Same Folder as the File
Backup Location writable: false
Use Win8 Pointer Input: false
Use RightMiddleTabletButton Workaround: false
Levels of Detail Enabled: false
Use Zip64: false
Display Information
Number of screens: 2
Screen: 0
Name: DP-4
Depth: 24
Scale: 1
Resolution in pixels: 3840x2160
Manufacturer: ViewSonic Corporation
Model: VP2780 SERIES
Refresh Rate: 59
Screen: 1
Name: HDMI-0
Depth: 24
Scale: 1
Resolution in pixels: 1920x1080
Manufacturer: Iiyama North America
Model: PL2410HD-
Refresh Rate: 60
Current Settings
Current Swap Location: /tmp
Current Swap Location writable: true
Undo Enabled: true
Undo Stack Limit: 350
Use OpenGL: true
Use OpenGL Texture Buffer: true
Disable Vector Optimizations: false
Disable AVX Optimizations: false
Canvas State: OPENGL_SUCCESS
Autosave Interval: 60
Use Backup Files: true
Number of Backups Kept: 4
Backup File Suffix: ~
Backup Location: Same Folder as the File
Backup Location writable: false
Use Win8 Pointer Input: false
Use RightMiddleTabletButton Workaround: false
Levels of Detail Enabled: false
Use Zip64: false
Current Settings
Current Swap Location: /tmp
Current Swap Location writable: true
Undo Enabled: true
Undo Stack Limit: 350
Use OpenGL: false
Use OpenGL Texture Buffer: true
Disable Vector Optimizations: false
Disable AVX Optimizations: false
Canvas State: OPENGL_SUCCESS
Autosave Interval: 60
Use Backup Files: true
Number of Backups Kept: 4
Backup File Suffix: ~
Backup Location: Same Folder as the File
Backup Location writable: false
Use Win8 Pointer Input: false
Use RightMiddleTabletButton Workaround: false
Levels of Detail Enabled: false
Use Zip64: false
Current Settings
Current Swap Location: /tmp
Current Swap Location writable: true
Undo Enabled: true
Undo Stack Limit: 350
Use OpenGL: true
Use OpenGL Texture Buffer: true
Disable Vector Optimizations: false
Disable AVX Optimizations: false
Canvas State: TRY_OPENGL
Autosave Interval: 60
Use Backup Files: true
Number of Backups Kept: 4
Backup File Suffix: ~
Backup Location: Same Folder as the File
Backup Location writable: false
Use Win8 Pointer Input: false
Use RightMiddleTabletButton Workaround: false
Levels of Detail Enabled: false
Use Zip64: false
Current Settings
Current Swap Location: /tmp
Current Swap Location writable: true
Undo Enabled: true
Undo Stack Limit: 350
Use OpenGL: true
Use OpenGL Texture Buffer: false
Disable Vector Optimizations: false
Disable AVX Optimizations: false
Canvas State: TRY_OPENGL
Autosave Interval: 60
Use Backup Files: true
Number of Backups Kept: 4
Backup File Suffix: ~
Backup Location: Same Folder as the File
Backup Location writable: false
Use Win8 Pointer Input: false
Use RightMiddleTabletButton Workaround: false
Levels of Detail Enabled: false
Use Zip64: false
Current Settings
Current Swap Location: /tmp
Current Swap Location writable: true
Undo Enabled: true
Undo Stack Limit: 350
Use OpenGL: true
Use OpenGL Texture Buffer: false
Disable Vector Optimizations: false
Disable AVX Optimizations: false
Canvas State: TRY_OPENGL
Autosave Interval: 60
Use Backup Files: true
Number of Backups Kept: 4
Backup File Suffix: ~
Backup Location: Same Folder as the File
Backup Location writable: false
Use Win8 Pointer Input: false
Use RightMiddleTabletButton Workaround: false
Levels of Detail Enabled: false
Use Zip64: false
Current Settings
Current Swap Location: /tmp
Current Swap Location writable: true
Undo Enabled: true
Undo Stack Limit: 350
Use OpenGL: true
Use OpenGL Texture Buffer: true
Disable Vector Optimizations: false
Disable AVX Optimizations: false
Canvas State: TRY_OPENGL
Autosave Interval: 60
Use Backup Files: true
Number of Backups Kept: 4
Backup File Suffix: ~
Backup Location: Same Folder as the File
Backup Location writable: false
Use Win8 Pointer Input: false
Use RightMiddleTabletButton Workaround: false
Levels of Detail Enabled: false
Use Zip64: false
Current Settings
Current Swap Location: /tmp
Current Swap Location writable: true
Undo Enabled: true
Undo Stack Limit: 350
Use OpenGL: true
Use OpenGL Texture Buffer: true
Disable Vector Optimizations: false
Disable AVX Optimizations: false
Canvas State: TRY_OPENGL
Autosave Interval: 60
Use Backup Files: true
Number of Backups Kept: 4
Backup File Suffix: ~
Backup Location: Same Folder as the File
Backup Location writable: false
Use Win8 Pointer Input: false
Use RightMiddleTabletButton Workaround: false
Levels of Detail Enabled: false
Use Zip64: false
Current Settings
Current Swap Location: /tmp
Current Swap Location writable: true
Undo Enabled: true
Undo Stack Limit: 350
Use OpenGL: true
Use OpenGL Texture Buffer: true
Disable Vector Optimizations: false
Disable AVX Optimizations: false
Canvas State: TRY_OPENGL
Autosave Interval: 60
Use Backup Files: true
Number of Backups Kept: 4
Backup File Suffix: ~
Backup Location: Same Folder as the File
Backup Location writable: false
Use Win8 Pointer Input: false
Use RightMiddleTabletButton Workaround: false
Levels of Detail Enabled: false
Use Zip64: false
Current Settings
Current Swap Location: /tmp
Current Swap Location writable: true
Undo Enabled: true
Undo Stack Limit: 350
Use OpenGL: true
Use OpenGL Texture Buffer: true
Disable Vector Optimizations: false
Disable AVX Optimizations: false
Canvas State: TRY_OPENGL
Autosave Interval: 60
Use Backup Files: true
Number of Backups Kept: 4
Backup File Suffix: ~
Backup Location: Same Folder as the File
Backup Location writable: false
Use Win8 Pointer Input: false
Use RightMiddleTabletButton Workaround: false
Levels of Detail Enabled: false
Use Zip64: false
Current Settings
Current Swap Location: /tmp
Current Swap Location writable: true
Undo Enabled: true
Undo Stack Limit: 350
Use OpenGL: true
Use OpenGL Texture Buffer: true
Disable Vector Optimizations: false
Disable AVX Optimizations: false
Canvas State: TRY_OPENGL
Autosave Interval: 60
Use Backup Files: true
Number of Backups Kept: 4
Backup File Suffix: ~
Backup Location: Same Folder as the File
Backup Location writable: false
Use Win8 Pointer Input: false
Use RightMiddleTabletButton Workaround: false
Levels of Detail Enabled: false
Use Zip64: false
Current Settings
Current Swap Location: /tmp
Current Swap Location writable: true
Undo Enabled: true
Undo Stack Limit: 350
Use OpenGL: true
Use OpenGL Texture Buffer: true
Disable Vector Optimizations: false
Disable AVX Optimizations: false
Canvas State: TRY_OPENGL
Autosave Interval: 60
Use Backup Files: true
Number of Backups Kept: 4
Backup File Suffix: ~
Backup Location: Same Folder as the File
Backup Location writable: false
Use Win8 Pointer Input: false
Use RightMiddleTabletButton Workaround: false
Levels of Detail Enabled: false
Use Zip64: false
Current Settings
Current Swap Location: /tmp
Current Swap Location writable: true
Undo Enabled: true
Undo Stack Limit: 350
Use OpenGL: true
Use OpenGL Texture Buffer: true
Disable Vector Optimizations: false
Disable AVX Optimizations: false
Canvas State: TRY_OPENGL
Autosave Interval: 60
Use Backup Files: true
Number of Backups Kept: 4
Backup File Suffix: ~
Backup Location: Same Folder as the File
Backup Location writable: false
Use Win8 Pointer Input: false
Use RightMiddleTabletButton Workaround: false
Levels of Detail Enabled: false
Use Zip64: false
------------------------------------------------
ADDITIONAL INFORMATION
https://krita-artists.org/t/solved-artwork-canvas-randomly-goes-fuzzy/35715?u=grum999
Krita 4.4.8: everything works fine
>From the oldest Krita 5-prealpha tested (b1530e3) the problem is already here..
:-/
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