Using compiled glsl shaders

[fallingcats]

How would you go about using precompiled shaders like the ones provided for example by bloc97/Anime4K?
I am not sure if this is something that is currently supported because when selecting the shader I seem to get a bunch Expected identifier errors.

[Limeth]

It seems to me like the GLSL source files may be intended for the mpv software, and it make use of some special annotation-based syntax. You would probably have to rewrite the source code so that it looks like a regular fragment shader.