[Feature Request] Bump map node

[emberlightstudios]

Very useful plugin. Thank you. I'm surprised a lot of this isn't already available directly in the engine.

Any chance of getting a node to convert grayscale bump baps to normal maps?

This would be useful for procedural normals, e.g. procedural skin shaders.

I am told this is implemented here: https://www.shadertoy.com/view/Xtd3DS

[DigvijaysinhGohil]

I will implement it.

[emberlightstudios]

It seems godot handles normal maps a bit differently than most. I think they do not use the blue channel. So that example may not work.