pub type PFNGLIMPORTSYNCEXTPROC = Option<unsafe extern "C" fn(external_sync_type: GLenum, external_sync: GLintptr, flags: GLbitfield) -> GLsync>;Aliased Type§
pub enum PFNGLIMPORTSYNCEXTPROC {
None,
Some(unsafe extern "C" fn(u32, i64, u32) -> *mut __GLsync),
}