CMYK PSD files should copy alpha #3918
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Need the DCO sign-off on these commits as well. |
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Should all be squashed and signed now. |
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adding a test Signed-off-by: Jason Baumeister <[email protected]>
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lgritz
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Jul 29, 2023
…#3918) During the CMYK to RGB conversion in PSDInput, the alpha channel was never copied to the RGBA output. Converting a PSD to JPEG worked because it ignored all the 0 alpha values, but converting to WebP would result in a fully transparent image. I added a cmyk-with-alpha.psd test to the psd-colormodes test to check this Signed-off-by: Jason Baumeister <[email protected]>
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Description
During the CMYK to RGB conversion in PSDInput, the alpha channel was never copied to the RGBA output. Converting a PSD to JPEG worked because it ignored all the 0 alpha values, but converting to WebP would result in a fully transparent image.
Tests
I added a cmyk-with-alpha.psd test to the psd-colormodes test to check this
Checklist:
have previously submitted a Contributor License Agreement
(individual, and if there is any way my
employers might think my programming belongs to them, then also
corporate).
(adding new test cases if necessary).