# UNITY_PBS_USE_BRDF1

> UNITY_PBS_USE_BRDF1 is set if Standard Shader BRDF1 should be used.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine.Rendering](/engine/6000.3/script-reference/unityengine/rendering.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
UNITY_PBS_USE_BRDF1 = 10
```

### Remarks

Additional Resources: [TierSettings.standardShaderQuality](/engine/6000.3/script-reference/unityeditor/rendering/tiersettings/standardshaderquality.md).