pub type PFNGLPROGRAMUNIFORM2FPROC = Option<unsafe extern "C" fn(program: GLuint, location: GLint, x: GLfloat, y: GLfloat)>;
enum PFNGLPROGRAMUNIFORM2FPROC { None, Some(unsafe extern "C" fn(_: u32, _: i32, _: f32, _: f32)), }
No value.
Some value of type T.
T