Ok so these are my findings concerning shaders, hope they'll help fixing what is not working or creating a more clean packahe for ezio and the others:
(note that you need to overwrite the shaders folder as mentioned before)
In BOLD the Folder. I'll list which ones do work or seem to.
Anti...
Ok spent some hours with shaders amd most of those I injected do work! I'll post a list when I get a bit of time at hand.
Good news is that a couple good scanlines filters work too!
I was always able to use overlays in all versions so far, but they introduce glitches when the game scrolls up or down whyle the shaders do not make that effect that kills your eyes
Thanks! I'm sure many will love this! Before I try to put hands in it (and I hope not to kill anything) do any scanlines shader work? It's they only thing I miss!
Anyone knows if at least simple shaders are back in working? I can't imagine retroarch without scanlines shaders :D
Also libretro on twitter stated they would try to fix them for this release...