pub type PFNGLMAPNAMEDBUFFERRANGEEXTPROC = Option<unsafe extern "C" fn(buffer: GLuint, offset: GLintptr, length: GLsizeiptr, access: GLbitfield) -> *mut c_void>;Aliased Type§
enum PFNGLMAPNAMEDBUFFERRANGEEXTPROC {
None,
Some(unsafe extern "C" fn(_: u32, _: isize, _: isize, _: u32) -> *mut c_void),
}