Fix shader guessing consistently failing to find all shader files

[Morilli]

• also adds the new .dx9sm3 extension. Might wanna consider combining all the hardcoded paths into a for() expression at this point..

[benoitryder]

Might wanna consider combining all the hardcoded paths into a for() expression at this point.

I agree, that would be cleaner. Also maybe improve the detection of "shared extension" using a regexp for instance.

[Morilli]

Which "shared extension detection" do you mean here? This part?

shader_paths = [path for path in self.known.values() if any(extension in path for extension in shader_extensions)]

[benoitryder]

Yes. shader_extensions and the any(...) could be replaced by using a regexp.

[Morilli]

Okay, have refactored a fair bit, and it works much better now imo.