Thanks for your reply. I’m on Retropie 3.6 at the moment.
Edit: Ok, I understand my mistake. I was speaking about ” cycling” through the shader using M and N key, not the difference between the shader “lines” in the config file (thanks for your previous reply for this).
I can’t find it on the forum, but i’m pretty sure there was an issue about this functuionnality previously…
I simply want to launch a game, then press M or N and cycle through the various shader and choose de right one. But at the moment, it doesn’t work for me. And of course I’ve seen Floob videos. 🙂