How to sum the elements of a vector?

[nodragem]

Godot Version

4.4

Question

Is there a simpler way to sum the elements of my Vector3 in the Shader Visual editor? I could not find a Sum function.

[dragonforge-dev]

DerivativeFunc, Vector3, Sum

[nodragem]

Thank you! it says that it is only for Vulkan though so I guess I can’t use it without knowing if my target devices support Vulkan.

[nodragem]

I found how to do it by reading the code of the triplanar shader.

Basically a dot product with a vector filled with 1 will give you the sum of the elements of Vector a: