Display problems on Big Sur when using NSImageInterpolation none on a NSBitmapGraphicsContext

UI Frameworks AppKit
LiveQuartz OP
Created Aug ’20
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Does anybody have some problems with NSImageInterpolation set to none not correctly taken into account on NSBitmapGraphicsContexts since Big Sur?
Replies  3
Boosts  0
Views  1.1k
Participants  4
neomobili OP
Jan ’21
I am facing the same issue. Did you find a workaround?
1
DrTacoMD OP
Apr ’21
Yep, same issue here. Some of the workarounds I've tried that didn't work:

  • Bypassing NSGraphicsContext and drawing directly into a CGContext

  • Creating a CGImage directly and passing false for shouldInterpolate

  • Passing false to CGContextSetShouldAntialias() before drawing)

I filed a feedback about it with a sample app (FB9081098) but that's all I can think to do at the moment.
1
owwlo OP
Apr ’21
I am having the same issue: https://github.com/lwouis/alt-tab-macos/pull/705#issuecomment-809008246

code pointer: https://github.com/lwouis/alt-tab-macos/commit/ce6de1402493535cf121fbab8d73105e683c6311

I have 2 Big Sur devices, and they show the same consistent results.
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Display problems on Big Sur when using NSImageInterpolation none on a NSBitmapGraphicsContext
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