4.4.5 and 5.0 Scratchpad and canvas have different effect of color smearing.

This is Google Translate.

This is true for 4.4.5 and 5.0.

The effect on Scratchpad is as if Smear alpha is checked, in fact I did not check Smear alpha.

It is found that the forum cannot upload kpp brush files. The following are the brush settings.

Krita

Version: 4.4.5
Languages: en_US, en, en_US, en, en_US, en, en_US, en, en_US, en, en_US, en, en_US, en, en_US, en, zh_CN, zh, en_US, en
Hidpi: true

Qt

Version (compiled): 5.12.9
Version (loaded): 5.12.9

OS Information

Build ABI: x86_64-little_endian-llp64
Build CPU: x86_64
CPU: x86_64
Kernel Type: winnt
Kernel Version: 10.0.19042
Pretty Productname: Windows 10 (10.0)
Product Type: windows
Product Version: 10

OpenGL Info

Vendor: “Google Inc.”
Renderer: “ANGLE (NVIDIA GeForce GTX 970 Direct3D11 vs_5_0 ps_5_0)”
Version: “OpenGL ES 3.0 (ANGLE 2.1.0.57ea533f79a7)”
Shading language: “OpenGL ES GLSL ES 3.00 (ANGLE 2.1.0.57ea533f79a7)”
Requested format: QSurfaceFormat(version 3.0, options QFlagsQSurfaceFormat::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 3.0, options QFlagsQSurfaceFormat::FormatOption(), depthBufferSize 24, redBufferSize 8, greenBufferSize 8, blueBufferSize 8, alphaBufferSize 8, stencilBufferSize 8, samples 0, swapBehavior QSurfaceFormat::DefaultSwapBehavior, swapInterval 0, colorSpace QSurfaceFormat::DefaultColorSpace, profile QSurfaceFormat::NoProfile)
Version: 3.0
Supports deprecated functions false
is OpenGL ES: true

QPA OpenGL Detection Info
supportsDesktopGL: true
supportsAngleD3D11: true
isQtPreferAngle: true

Hardware Information

GPU Acceleration: auto
Memory: 32693 Mb
Number of Cores: 16
Swap Location: C:/Users/xi/AppData/Local/Temp

Current Settings

Current Swap Location: C:/Users/xi/AppData/Local/Temp
Current Swap Location writable: true
Undo Enabled: true
Undo Stack Limit: 30
Use OpenGL: true
Use OpenGL Texture Buffer: true
Use AMD Vectorization Workaround: false
Canvas State: OPENGL_SUCCESS
Autosave Interval: 900
Use Backup Files: true
Number of Backups Kept: 1
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: \.\DISPLAY1
Depth: 32
Scale: 1
Resolution in pixels: 2560x1440
Manufacturer:
Model:
Refresh Rate: 59
Screen: 1
Name: \.\DISPLAY2
Depth: 32
Scale: 1
Resolution in pixels: 1920x1080
Manufacturer:
Model:
Refresh Rate: 60

As far as I can tell, the scratchpad doesn’t have transparancy. So it’s basically like painting on an opaque layer - it’s not alpha that’s being smeared, but the white background.

1 Like

This is Google Translate.

Thank you, I tried to draw on a white background layer, the effect is the same.

It seems that I did something stupid. :rofl: