---
title: "CVOpenGLESTextureGetCleanTexCoords(_:_:_:_:_:)"
framework: corevideo
role: symbol
role_heading: Function
path: "corevideo/cvopenglestexturegetcleantexcoords(_:_:_:_:_:)"
---

# CVOpenGLESTextureGetCleanTexCoords(_:_:_:_:_:)

Returns convenient normalized texture coordinates for the part of the image that should be displayed.

## Declaration

```swift
func CVOpenGLESTextureGetCleanTexCoords(_ image: CVOpenGLESTexture, _ lowerLeft: UnsafeMutablePointer<GLfloat>, _ lowerRight: UnsafeMutablePointer<GLfloat>, _ upperRight: UnsafeMutablePointer<GLfloat>, _ upperLeft: UnsafeMutablePointer<GLfloat>)
```

## Parameters

- `image`: The OpenGLES texture-based image buffer whose normalized texture coordinates are desired.
- `lowerLeft`: An array of two GLfloats where the s and t normalized texture coordinates of the lower left corner of the image will be stored.
- `lowerRight`: An array of two GLfloats where the s and t normalized texture coordinates of the lower right corner of the image will be stored.
- `upperRight`: An array of two GLfloats where the s and t normalized texture coordinates of the upper right corner of the image will be stored.
- `upperLeft`: An array of two GLfloats where the s and t normalized texture coordinates of the upper left corner of the image will be stored.

## Discussion

Discussion This function automatically takes into account whether or not the texture is flipped.

## See Also

### Inspecting Textures

- [CVOpenGLESTextureGetTarget(_:)](corevideo/cvopenglestexturegettarget(_:).md)
- [CVOpenGLESTextureGetName(_:)](corevideo/cvopenglestexturegetname(_:).md)
- [CVOpenGLESTextureIsFlipped(_:)](corevideo/cvopenglestextureisflipped(_:).md)
- [CVOpenGLESTextureGetTypeID()](corevideo/cvopenglestexturegettypeid().md)