Miro is a native pdf viewer for Windows and Linux (and macOS) built with iced and mupdf-rs. You may remember it from my slightly aggressively titled post "I hate acrobat" (https://news.ycombinator.com/item?id=45598776).
Anyways, since then I've release 2 whole new versions with the aid of many helpful contributors. Most recently is a presentation mode to hide the UI and a toggle for fullscreen mode.