pub type PFNGLGETVARIANTPOINTERVEXTPROC = Option<unsafe extern "C" fn(id: GLuint, value: GLenum, data: *mut *mut c_void)>;Aliased Type§
pub enum PFNGLGETVARIANTPOINTERVEXTPROC {
None,
Some(unsafe extern "C" fn(u32, u32, *mut *mut c_void)),
}