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# EAGLDrawable

iOS objects that implement the `EAGLDrawable` protocol can be used as a rendering surface and displayed to the screen by an `EAGLContext` object. In iOS 2.0, this protocol is implemented only by the `CAEAGLLayer` class, but in the future other classes may choose to implement the protocol. The `EAGLDrawable` protocol is not intended to be implemented by objects outside of the iOS.

```
protocol EAGLDrawable
```

## Topics

### Drawable Properties

[`drawableProperties`](/documentation/OpenGLES/EAGLDrawable/drawableProperties)

A dictionary of values that specify the desired characteristics of the drawable surface.

### Constants

[Drawable Property Keys](/documentation/OpenGLES/drawable-property-keys)

Keys to specify in the `drawableProperties` dictionary.

[Color Formats](/documentation/OpenGLES/color-formats)

Color formats that can be specified under the `kEAGLDrawablePropertyColorFormat` key.


---

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