---
title: LitLightingModel.DiffuseModel.lambertian
framework: realitykit
role: symbol
role_heading: Case
path: realitykit/litlightingmodel/diffusemodel-swift.enum/lambertian
---

# LitLightingModel.DiffuseModel.lambertian

Lambertian diffuse, a simple and performant constant-factor model.

## Declaration

```swift
case lambertian
```

## See Also

### Choosing a diffuse model

- [LitLightingModel.DiffuseModel.orenNayar](realitykit/litlightingmodel/diffusemodel-swift.enum/orennayar.md)
- [LitLightingModel.DiffuseModel.hammon](realitykit/litlightingmodel/diffusemodel-swift.enum/hammon.md)