Browser zoom fucks image rendering resolution

[alterNERDtive]

Describe the bug

(At least in the Tauri builds; I used to use Electron which can’t zoom, so … might or might not be a general bug 🤷)

This is entry number 3 in the “what the zoom?” series. See also #679 and #680!

If your browser zoom is not 100%, image rendering resolution is incorrect (noticeably lower). I was going to post some pictures of my lovely plants, but i think text illustrates it even better:

Both of those are at “100%” in the image viewer, anti aliasing turned off. The first is 100% browser zoom, the second is 80% browser zoom.

Reproduction

1. Use the Tauri nightly build.
2. Look at a picture at 100% in the image viewer.
3. Change browser zoom to 80% (control+minus or control+mouse wheel).
4. Look at the same picture at 100% in the image viewer.
5. Those are (not) the same picture.

Expected behavior

Image rendering should not be affected by browser zoom. Pretty please? :<

Platform and versions

1. OS: Fedora 43, Sway
2. Browser: CEF (Tauri)
3. Sable version: nightly (doesn’t matter which, it’s been broken the entire time)
4. Matrix homeserver: very not relevant :)

Additional context

Using the app setting for zoom doesn’t break image rendering, but has other issues (see the others in the “what the zoom?” series).

[alterNERDtive]

Oh yeah; obviously it gets worse if you change zoom level in the image viewer.