I have following section in my shader graph, that I want to simplify. At the moment I have to set manual boolean Use Normal Map in order to decide if I want to use a Normal Map texture or default Normal vector. Ideally, I want to figure out a way to change this and detect if Normal Map was provided: if yes go to Sample Texture 2D step, if not use default Normal Vector. This way getting rid of that manual boolean.
I tired checking for null, but I can't seem to be able and plug in normal map into that.