WorldAlign blend (landscape)

Hi all,

I’m working on landscape material, In which I have a Worldalignblend setup for my detail rock textures. It has been copied from
the StylizedLandscape material(EPIC).

I have packed my textures and I’m using the geen channel (Rock). I’m using two textures as I’m
using a distance blend too. I have noticed top texture that it has empty alpha slot. Do I need to multiply/append this? Can any body
give any suggestions how you would set this up??