Looks like I was wrong! GNOME Screenshot worked fine. Attached are both the full-resolution unedited screenshot, and a screenshot with several of the exact same icons overlaid pixel-doubled properly as an example of how it should look.
Looks like I was wrong! GNOME Screenshot worked fine. Attached are both the full-resolution unedited screenshot, and a screenshot with several of the exact same icons overlaid pixel-doubled properly as an example of how it should look.