Ambient Grunge provides a set of procedural shader nodes for creating dirt effects on objects. The node setup uses Ambient Occlusion and Bevel nodes to calculate where dirt should accumulate on a model's surface.

The system is modular, allowing users to combine different nodes to customize the grunge effect. It includes parameters for adjusting the dirt appearance and accepts color inputs for passing texture maps through the setup. The material is designed primarily for Cycles, though it functions in EEVEE with limitations related to screen-space ambient occlusion during animation.