Capry

Applied all the review notes

That's my bad, I'll go over them again

Apologies about all the issues with the shader file formatting This is my first time working on these

> Why the effect is so different in mobile than forward? It's a simpler calculation than forward+ I wouldn't mind putting the same calculation as forward+ into the mobile shader...

I fixed an error in using the direct light affect slider modified AO in the bent normal specular occlusion calculation instead of the baseline AO. This is now accurate to...

I added a comment linking a PDF of the paper mentioned for spherical cap intersections. This paper was only briefly mentioned in the main paper so I thought it'd be...

I created a [small scene](https://github.com/LunaCapra/godot-bent-normals-test/releases/download/1.0.0/BentNormalTest.zip) with CC0 models from polyhaven that I also generated bent normals for. This should make testing this PR easier. The project has TAA, SSAO, SSIL...

> [@LunaCapra](https://github.com/LunaCapra) should bent normals work with triplanar? There's no technical reason why they shouldn't

 Confirmed on my end (master [`88f3b5f`](https://github.com/godotengine/godot/commit/88f3b5f9d52f740b24fabfb8bc01b8b7026ba279)) This is somewhat vaguely hinted at in the documentation for [C# Variant](https://docs.godotengine.org/en/latest/tutorials/scripting/c_sharp/c_sharp_variant.html#variant-compatible-types) where it notes that a standard array is equivalent to `Godot.Collections.Array`...

I found that exporting native C# arrays of a godot object type (e.g. resource) does work as well, so it's not just packed arrays that work.