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On Sun, 19 Sep 2021 00:01:51 -0400, Philip Webb wrote: |
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> Tibor Nagy of KDE Bugzilla has replied very promptly : |
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> |
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> My guess this happens due to botched gamma handling. |
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> Washed out images are a prime symptom of that kind of bugs. |
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> Seems like when a PNG gAMA chunk is present, |
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> Gwenview applies the gamma transform in the opposite direction it |
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> should, thus the washed out images. Seems to be Qt bug, already fixed |
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> in 5.15.x : |
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> https://github.com/qt/qtbase/commit/de2c3ccd49cb89e0c6912da3b03705a36ef03946 |
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> |
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> As you can see from the link above, some coder forgot to invert a value, |
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> using 'gamma' when it sb '1/gamma'. |
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> |
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> The patch is dated 'June 11', so it make take awhile yet to reach |
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> Gentoo. |
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5.15.2 is already in testing, which explains why I was unable to |
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reproduce this in the way it hit you, but there was still one washed out |
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image I saw. |
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-- |
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Neil Bothwick |
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667 - The FAX number of the beast |
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