Procedural Damage & Wear System

Procedural Damage & Wear System is a Geometry Nodes-based Blender addon that generates realistic surface aging, weathering, and battle damage through intuitive sliders. Built by StraySpark for Blender 4.2+.

No hand-painting, no texture layering -- just select your mesh, apply the system, and dial in the exact level of wear you need.

Feature Overview

Feature	Details
Wear Channels	6 independent channels: edge wear, scratches, dirt accumulation, rust & corrosion, paint chipping, wetness
Damage Presets	4 built-in damage presets: Light Use, Heavy Industrial, Abandoned, Battle Damaged
Surface Type Presets	4 surface types: Metal, Wood, Concrete, Plastic
Generation	100% procedural via Geometry Nodes -- fully non-destructive and adjustable at any time
UV Required	No -- detection is geometry-based. UVs only needed for optional texture baking
Blender Version	4.2+
Dependencies	Zero -- pure Blender addon with no external libraries

How It Works

The system analyzes your mesh geometry and generates per-channel wear data through a multi-stage pipeline:

Your Mesh Object
    |
    |  Select mesh > N-Panel > Damage & Wear > Apply
    v
+--------------------------------------------------+
|  Stage 1: Mesh Geometry Analysis                 |
|  Evaluates topology, normals, and face angles     |
+--------------------------------------------------+
|  Stage 2: Curvature Detection                    |
|  Identifies edges, cavities, and convex surfaces  |
+--------------------------------------------------+
|  Stage 3: Per-Channel Attribute Generation       |
|  Edge wear, scratches, dirt, rust, paint, wetness |
|  Each channel driven by its own parameter set     |
+--------------------------------------------------+
|  Stage 4: Vertex Color Output                    |
|  Results stored as vertex color attributes        |
|  Ready for shader use or texture baking           |
+--------------------------------------------------+

1. Mesh geometry analysis evaluates the topology, normals, and face angles of your object
2. Curvature detection identifies edges, cavities, and convex surfaces to determine where wear naturally occurs
3. Per-channel attribute generation produces independent wear data for each of the 6 channels, driven by their respective parameters
4. Vertex color output stores the results as vertex color attributes, ready for direct shader use or optional texture baking

All stages run inside a Geometry Nodes modifier, so everything remains non-destructive. Adjust any slider and the result updates in real time.

Quick Start

1. Install the addon and enable it in Blender Preferences
2. Select any mesh object
3. Open the N-Panel and navigate to the Damage & Wear tab
4. Click Apply Damage System
5. Adjust the Age Factor slider to control overall wear intensity
6. Try the built-in presets for instant results

See the full Getting Started guide for detailed installation and setup instructions.

Documentation

• Getting Started -- Install the addon and apply your first damage pass
• Wear Effects -- Deep dive into each of the 6 wear channels and their parameters
• Presets -- Built-in damage presets, custom presets, and randomization
• Export -- Texture baking and export workflows for game engines
• Surface Types -- Surface type presets that control how wear distributes across your mesh
• API Reference -- Operator IDs, modifier properties, and vertex color attributes