Shader language guide

[icculus]

No, I don't think it is. I think we should have a shader authoring guide that lives somewhere dedicated and that way we can address specific shader languages and compiler tools when necessary.

Originally posted by @thatcosmonaut in libsdl-org/sdlwiki#728 (comment)

[icculus]

I put this in SDL, but this could be an sdlwiki thing once we make decisions.

[thatcosmonaut]

I'm writing a long-form article about this right now. I think at some point having this and/or per-language guidelines directly on the wiki is probably a good idea.