# UpdateExternalTexture(IntPtr)

> Updates Unity texture to use different native texture object.

## Definition

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

```csharp
public void UpdateExternalTexture(IntPtr nativeTex)
```

### Parameters

**** (\[IntPtr]\(https\://learn.microsoft.com/dotnet/api/system.intptr)): Native 3D texture object.

### Remarks

This function is mostly useful for [native code plugins](/engine/6000.0/manual/scripting/compilation-and-code-reload/plug-ins/native-plugin-interface.md) that create platform specific texture objects outside of Unity, and need to use these textures in Unity Scenes. For a texture created with [Texture3D.CreateExternalTexture](/engine/6000.0/script-reference/unityengine/texture3d/createexternaltexture.md), this function switches to another underlying texture object if/when it changes.

Additional Resources: [Texture3D.CreateExternalTexture](/engine/6000.0/script-reference/unityengine/texture3d/createexternaltexture.md).