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.
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.
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:
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