# compareFunctionBack

> The function used to compare the reference value to the current contents of the buffer for back-facing geometry.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine.Rendering](/engine/6000.0/script-reference/unityengine/rendering.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
public CompareFunction compareFunctionBack { get; set; }
```