LLMMaterial

JSON-driven UE5 Material Asset Generation System. Define material node graphs in JSON, AI outputs .llmmat files, and the system automatically generates compilable Material Blueprint assets.

Core Features

• JSON ↔ Material bidirectional conversion
• Full Expression node support (30+ types)
• UE5 Substrate BSDF material support
• Custom HLSL function (.ush) generation
• Automatic node layout (Sugiyama algorithm)
• In-editor panel, import/preview/generate
• SubsurfaceProfile skin materials
• Texture parameter and sampling support
• Material Domain and Blend Mode configuration
• Schema-driven type system

Quick Preview

{
  "version": "1.0",
  "name": "RedMetal",
  "domain": "Surface",
  "shadingModel": "DefaultLit",
  "nodes": [
    { "id": "color", "type": "Constant3Vector",
      "properties": { "Constant": [1.0, 0.0, 0.0] }}
  ],
  "output": {
    "baseColor": { "node": "color", "pin": "Result" }
  }
}

Supported Material Types

Category	Supported Content
Domain	Surface, PostProcess, UserInterface, VirtualTexture
BlendMode	Opaque, Masked, Translucent, Additive, Modulate
ShadingModel	DefaultLit, Unlit, Subsurface, SubsurfaceProfile, ClearCoat, Hair, Cloth, Eye, Strata
Substrate	SubstrateSlabBSDF, SubstrateHairBSDF, VerticalLayering, HorizontalMixing

Next Steps

• Getting Started - Installation and basic usage
• Node Types - All supported nodes
• Substrate - UE5 Substrate materials
• Examples - Various material type examples