static if(!(__traits(isSame, extension, KHR_xlib_surface)))
static if(!(__traits(isSame, extension, KHR_xcb_surface)))
static if(!(__traits(isSame, extension, KHR_wayland_surface)))
static if(!(__traits(isSame, extension, KHR_android_surface)))
static if(__traits(isSame, extension, KHR_win32_surface))