pub type PFNGLGETPERFQUERYIDBYNAMEINTELPROC = Option<unsafe extern "C" fn(queryName: *mut GLchar, queryId: *mut GLuint)>;
enum PFNGLGETPERFQUERYIDBYNAMEINTELPROC { None, Some(unsafe extern "C" fn(_: *mut i8, _: *mut u32)), }
No value.
Some value of type T.
T