how to input same vertex position value in vertex and fragment function in shader graph

I want use the position to caculate a 3d voronoi noise.
I use the voronoi noise value to offset vertex position and also get the color.
But I can’t use the same positon value input to fragment function.
How can I input same position value into 3d voronoi noise to get same value in vertex and fragment function?
I want use the shader in vfx graph !

I want left(not shader graph made),but shader graph can only give me right:
7950862--1018051--upload_2022-3-9_15-51-14.png

Necroing this thread as it comes up when I search the same thing to no avail. Why is this? I have to do everything twice to achieve the effect. Seems pointless.