What is this mod for?

Enables resourcepacks to be able to replace sodium's shaders, similar to resourcepacks being able to replace vanilla's core shaders.

Resourcepack incompatible

Sodium may display the message The following resource packs are incompatible with Sodium listing your active core shaders. This message will always appear, even if the resourcepack supports sodium core shaders and can be ignored.

Wasn't there a similar mod before?

Yes there is a mod called Sodium Shader Support, which does the same thing.

Why another mod like this?

Sodium Shader Support has not been updated to newer versions of minecraft.

For Content Creators

If you are a resourcepack creator and want to make your core shaders work on sodium, please see the README.md on the github repository.