# Enable(BuiltinShaderDefine)

> Enable a specific shader keyword.

## Definition

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

```csharp
public void Enable(BuiltinShaderDefine define)
```

### Parameters

**** (\[BuiltinShaderDefine]\(/engine/6000.0/script-reference/unityengine/rendering/builtinshaderdefine)):&#x20;