It's documented here https://store.steampowered.com/oldnews/35534?l=
I don't think I ever found more documents on this feature. I assume it might need lots of users with matching result to ensure that bad actor can't upload malicious shader.
I don't think I ever found more documents on this feature. I assume it might need lots of users with matching result to ensure that bad actor can't upload malicious shader.
Tho i would expect (naive me) that the shaders at least might be cached locally - which is not the case since as i mentioned in my comment have to recompile them for every game every time i start.