# Unity Shader Graph

> Unity Shader Graph skill for visual shader authoring, custom nodes, and material effects.

- Skill: `a5c-ai/unity-shader-graph` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add a5c-ai/unity-shader-graph`
- Raw SKILL.md: https://api.skillmd.com/api/skills/a5c-ai/unity-shader-graph/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: a5c-ai (https://skillmd.com/u/a5c-ai)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/a5c-ai/unity-shader-graph

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# Unity Shader Graph Skill

Visual shader development using Unity Shader Graph.

## Overview

This skill provides capabilities for creating shaders visually using Unity's Shader Graph, enabling artists and developers to build complex materials without writing code.

## Capabilities

### Visual Authoring
- Create shader graphs for URP/HDRP
- Connect nodes for material logic
- Preview effects in real-time
- Handle shader variants

### Effect Types
- Surface shaders (Lit, Unlit)
- Vertex displacement
- UV manipulation
- Procedural textures

### Custom Development
- Create custom nodes
- Build subgraphs
- Implement shader keywords
- Handle multi-pass rendering

### Material System
- Generate materials from graphs
- Expose material properties
- Handle texture sampling
- Implement triplanar mapping

## Prerequisites

- Unity 2021.3+
- Shader Graph package
- URP or HDRP project

## Usage Patterns

### Common Node Patterns

```
Dissolve Effect:
Noise → Step → Alpha Clip Threshold → Alpha

Rim Lighting:
Fresnel Effect → Multiply → Add Emission

Scrolling UV:
Time → Multiply → Add UV → Sample Texture

Vertex Animation:
Noise → Position Offset → Position
```

### Custom Function Node

```hlsl
// Custom HLSL function for Shader Graph
void MyCustomFunction_float(float3 In, out float3 Out)
{
    Out = In * 2.0;
}
```

## Best Practices

1. Use subgraphs for reusable patterns
2. Minimize texture samples
3. Use shader keywords for variants
4. Profile on target platforms
5. Document exposed properties

## References

- [Shader Graph Documentation](https://docs.unity3d.com/Packages/com.unity.shadergraph@latest)