# CVOpenGLESTextureGetCleanTexCoords(_:_:_:_:_:) Returns convenient normalized texture coordinates for the part of the image that should be displayed. ``` func CVOpenGLESTextureGetCleanTexCoords(_ image: CVOpenGLESTexture, _ lowerLeft: UnsafeMutablePointer, _ lowerRight: UnsafeMutablePointer, _ upperRight: UnsafeMutablePointer, _ upperLeft: UnsafeMutablePointer) ``` ## Parameters `image` The OpenGLES texture-based image buffer whose normalized texture coordinates are desired. `lowerLeft` An array of two `GLfloat`s where the `s` and `t` normalized texture coordinates of the lower left corner of the image will be stored. `lowerRight` An array of two `GLfloat`s where the `s` and `t` normalized texture coordinates of the lower right corner of the image will be stored. `upperRight` An array of two `GLfloat`s where the `s` and `t` normalized texture coordinates of the upper right corner of the image will be stored. `upperLeft` An array of two `GLfloat`s where the `s` and `t` normalized texture coordinates of the upper left corner of the image will be stored. ## Discussion This function automatically takes into account whether or not the texture is flipped. --- 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)