Function fltk::gl::glCompressedTexImage2D

pub unsafe extern "C" fn glCompressedTexImage2D(
    target: u32, 
    level: i32, 
    internalformat: u32, 
    width: i32, 
    height: i32, 
    border: i32, 
    imageSize: i32, 
    data: *const c_void
)