pls check the attached image and explain the logic behind the nodes.
well.
i can t detail more for the vertex part, its the vertex related instruction cost of your material (uv, vertexcolor…).
and the sampler is the number of texture sampler you have in your material within the limit of 16 in a single material ( but that doesn t include the shared samplers )
what is texture sampler ? 
. and there is 2 or 3 / 16 texture sampler even empty material. can someone explain how it works.
well a texture sample is just where you sample a texture 
