Blender Procedural Grunge with Ambient Occlusion 🗿

🌟 Product Overview

This product contains a Blender material for procedurally-generated grunge that grows and spreads in a pattern that's computationally based on an object's ambient occlusion. It’s designed to take any existing shader as input, and generate a grunge-texture pattern over top.

The material is created as a custom shader node group — making it easily configured, customized, duplicated, or extended to fit any of your needs 💪

✨ Key Features

• Customizable controls for the grunge spread, density, detail, color, bump strength, and more.
• Support for animating the generated texture noise through an “animation factor” input value.
• A clean, well-architected tree of nodes crafted with care for logical coherence and extensibility.
• A starter set of demo materials showcasing how the grunge nodes can be added over top of existing shaders.

📦 Contents

• A Blender file containing:
  • The procedural grunge as a self-contained, customizable shader node tree — exhibiting the key features described above.
  • A usage demo — showcasing a the nodes being applied within a number of different materials on different objects.
  • A “studio” setup with lighting, multiple cameras, and multiple backdrop surfaces to experiment with.
  • An environment-lighting setup with multiple “World” configurations to experiment with — each using different images, HDRI, light strengths, blending techniques, etc.
  • A Compositor setup with utility node groups for experimenting with different background compositions, glare effects, recoloring effects, and more.
• A collection of images showcasing final renders from the demo.

🧩 Compatibility Notes

• Built in Blender 4
• Should be compatible with previous versions of Blender.
• Configured for both the Cycles and EEVEE rendering engines.