---
title: cp_drawable_get_tracking_areas_texture
framework: compositorservices
role: symbol
role_heading: Function
path: compositorservices/cp_drawable_get_tracking_areas_texture
---

# cp_drawable_get_tracking_areas_texture

Returns the tracking areas texture at the specified index in the drawable.

## Declaration

```occ
id<MTLTexture>cp_drawable_get_tracking_areas_texture(cp_drawable_t drawable, size_t index);
```

## Parameters

- `drawable`: The drawable for a frame.
- `index`: The index of the texture you want. The index must be greater than or equal to 0 and less than the value that doc://com.apple.compositorservices/documentation/CompositorServices/cp_drawable_get_tracking_areas_texture_count returns.

## Return Value

Return Value The Metal object index texture at the specified index.

## Discussion

Discussion Use the returned texture in your render pipeline to store the tracking areas ID used for hover effects and indirect gestures. The layer’s texture topology determines the layout and content for each texture. The drawable’s views contain information about how those views map to the textures.