---
title: LitLightingModel.SpecularModel.anisotropicGGX
framework: realitykit
role: symbol
role_heading: Case
path: realitykit/litlightingmodel/specularmodel-swift.enum/anisotropicggx
---

# LitLightingModel.SpecularModel.anisotropicGGX

Anisotropic GGX specular, for surfaces with directional highlight variation such as brushed metal.

## Declaration

```swift
case anisotropicGGX
```

## See Also

### Choosing a specular model

- [LitLightingModel.SpecularModel.ggx](realitykit/litlightingmodel/specularmodel-swift.enum/ggx.md)
- [LitLightingModel.SpecularModel.blinnPhong](realitykit/litlightingmodel/specularmodel-swift.enum/blinnphong.md)
- [LitLightingModel.SpecularModel.sheen](realitykit/litlightingmodel/specularmodel-swift.enum/sheen.md)