Comment 1 for bug 1598805

If Mir is part of this bug at all, then it was implemented a few years ago in mir_proving_server (Super+mousewheel) and still works today. It's fun and super-smooth.

If Unity8 would like to reuse that implementation instead of doing its own then I'm open to the idea of moving the code into a location where USC can trigger it.

On that note, I've been thinking there may be some full-screen effects (zoom/contrast/negative) that are better implemented in the system compositor than Unity8. So they work seemlessly between sessions. Also as an added bonus: They already exist in mir_proving_server (Super+wheel/C/N). So again, I'm open to the idea of moving these existing effects to a location where USC can use them...