PIXXO 3D shows how to place dust or snow on certain parts of objects in Blender by reading normal directions.

This new Pixxo 3D Juandre (Jay) Labuschagne tutorial shows how to create a shader that can deposit dust or snow on certain model parts.

To make dust or snow look like it’s fallen on the top-facing surfaces of a model, Jay reads the normal information to tell which parts of the shader to display on which parts of the object.