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# SCNRenderingAPI.openGLLegacy

Use the Legacy OpenGL API for SceneKit rendering in macOS.

```
case openGLLegacy
```

## Discussion

This option is available on all macOS systems supporting SceneKit. If you request the Metal rendering API for an [`SCNView`](/documentation/SceneKit/SCNView) object on a system that does not support Metal, SceneKit falls back to the Legacy OpenGL API.

---

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