# CVOpenGLTextureGetCleanTexCoords(_:_:_:_:_:) Returns the texture coordinates for the part of the image that should be displayed. ``` func CVOpenGLTextureGetCleanTexCoords(_ image: CVOpenGLTexture, _ lowerLeft: UnsafeMutablePointer, _ lowerRight: UnsafeMutablePointer, _ upperRight: UnsafeMutablePointer, _ upperLeft: UnsafeMutablePointer) ``` ## Parameters `image` The Core Video OpenGL texture whose clean tex coordinates you want to obtain. `lowerLeft` On output, the `GLFloat` array holds the *s* and *t* texture coordinates of the lower-left corner of the image. `lowerRight` On output, the `GLFloat` array holds the *s* and *t* texture coordinates of the lower-right corner of the image. `upperRight` On output, the `GLFloat` array holds the *s* and *t* texture coordinates of the upper-right corner of the image. `upperLeft` On output, the `GLFloat` array holds the *s* and *t* texture coordinates of the upper-left corner of the image. ## Discussion This function automatically takes into account whether or not the texture is flipped. ## See Also [Core Video Programming Guide](https://developer.apple.com/library/archive/documentation/GraphicsImaging/Conceptual/CoreVideo/CVProg_Intro/CVProg_Intro.html#//apple_ref/doc/uid/TP40001536) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)