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[bug #59337] Using optipng compressed icons uses black instead of transp
From: |
Stuart Hayhurst |
Subject: |
[bug #59337] Using optipng compressed icons uses black instead of transparency |
Date: |
Sat, 24 Oct 2020 14:21:53 -0400 (EDT) |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36 |
URL:
<https://savannah.gnu.org/bugs/?59337>
Summary: Using optipng compressed icons uses black instead of
transparency
Project: GNU GRUB
Submitted by: 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:
Originator Email:
Open/Closed: Open
Release:
Release: other
Discussion Lock: Any
Reproducibility: Every Time
Planned Release: None
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Details:
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.
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