So I’m aiming to create a similar effect to this picture, featuring a hemisphere that uses a shader to create waves on top of it. I want to have a mesh that has one flat side facing upwards and change that flat side as I see fit. If possible, I’d prefer to do this arbitrarily, so that I can change out the mesh without having to supply a normal map. I have the shader graph to create waves, but the shader affects every single vertex in the mesh, not just the upwards-facing ones. How would I go about making the waves only affect the upwards normals?
Thanks much!