Type Alias PFNGLINDEXFUNCEXTPROC 

pub type PFNGLINDEXFUNCEXTPROC = Option<unsafe extern "C" fn(func: GLenum, ref_: GLclampf)>;

Aliased Type

pub enum PFNGLINDEXFUNCEXTPROC {
    None,
    Some(unsafe extern "C" fn(u32, f32)),
}

Variants

None

No value.

Some(unsafe extern "C" fn(u32, f32))

Some value of type T.