bugGNU GRUB - Bugs: bug #59337, Using optipng compressed icons...


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bug #59337: Using optipng compressed icons uses black instead of transparency

Submitted by:  Stuart Hayhurst <dragon8oy>
Submitted on:  Sat 24 Oct 2020 06:21:51 PM UTC  
Category:  User Interface Severity:  Major
Priority:  5 - Normal Item Group:  None
Status:  None Privacy:  Public
Assigned to:  None Originator Name: 
Open/Closed:  Open Release: 
Release:  other Reproducibility:  Every Time
Planned Release:  None

Sat 24 Oct 2020 06:21:51 PM UTC, original submission:  

Using a png with transparency works fine, but when the icon is losslessly compressed using optipng, transparency appears as black instead. This happens regardless of the compression level / arguments used.
I've attached 2 files, `debian-compressed.png` causes the black to appear instead of transparency, and was compressed using `optipng -o7 debian-compressed.png`
The other file, `debian.png` works fine, and isn't compressed.

Stuart Hayhurst <dragon8oy>


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