---
title: fog
framework: GLKit
role: symbol
role_heading: Instance Property
platforms: [iOS 5.0+, iPadOS 5.0+, macOS 10.8+, tvOS 9.0+]
path: glkit/glkbaseeffect/fog
---

# fog

The fog properties to apply to the scene.

## Declaration

```swift
var fog: GLKEffectPropertyFog { get }
```