Unreal Lumen Skill
Lumen global illumination and reflections for Unreal Engine.
Overview
This skill provides capabilities for implementing Lumen dynamic global illumination and reflections in Unreal Engine.
Capabilities
Global Illumination
- Configure Lumen GI settings
- Handle final gather
- Manage infinite bounces
- Optimize trace settings
Reflections
- Configure reflection method
- Handle screen traces
- Manage reflection captures
- Optimize quality settings
Integration
- Combine with Nanite
- Handle emissive materials
- Manage sky light
- Configure exposure
Performance
- Hardware ray tracing option
- Software ray tracing fallback
- Scene complexity handling
- Platform scalability
Prerequisites
- Unreal Engine 5.0+
- Modern GPU (RTX for HW RT)
Usage Patterns
Project Settings
Lumen Global Illumination:
- Enable in Project Settings
- Configure final gather quality
- Set trace distance
- Configure scene detailPost Process Volume
1. Add Post Process Volume
2. Enable Infinite Extent
3. Configure Lumen settings
4. Adjust quality per areaBest Practices
- Use emissive for small lights
- Keep scenes well-lit
- Avoid very dark areas
- Profile with Lumen visualizations
- Test SW and HW ray tracing