pub type PFNGLVERTEXATTRIB4DARBPROC = Option<unsafe extern "C" fn(index: GLuint, x: GLdouble, y: GLdouble, z: GLdouble, w: GLdouble)>;Aliased Type§
pub enum PFNGLVERTEXATTRIB4DARBPROC {
None,
Some(unsafe extern "C" fn(u32, f64, f64, f64, f64)),
}