Function CVOpenGLTextureIsFlipped 

pub extern "C-unwind" fn CVOpenGLTextureIsFlipped(
    image: &CVOpenGLTexture,
) -> bool

👎Deprecated: OpenGL/OpenGLES is no longer supported. Use Metal APIs instead. (Define COREVIDEO_SILENCE_GL_DEPRECATION to silence these warnings)

Available on crate features CVBuffer and CVImageBuffer and CVOpenGLTexture only.

Returns whether the image is flipped vertically or not.

Parameter image: Target CVOpenGLTexture

Returns: True if 0,0 in the texture is upper left, false if 0,0 is lower left