Questions about Node Efficiency

Development Rendering
1

Hi,

I am trying to optimize my materials and I am wondering what approach is more efficient.

First question is about normal strength.

Here are the two ways I have found so far to tweak it in the material but which one of them is more efficient?

2

well what does it say in the stats? material instructions

3

Most efficient way to scale normal map is to only multiply z component. And you use inverse of normalStrength as scaling factor.



scaledNormal = float3(normal.xy, inverseScaleFactor * normal.z);