A variable that causes SDL to use the old axis and button mapping for XInput devices.
Defined in SDL_hints.h
#define SDL_HINT_XINPUT_USE_OLD_JOYSTICK_MAPPING "SDL_XINPUT_USE_OLD_JOYSTICK_MAPPING"
This hint is for backwards compatibility only and will be removed in SDL 2.1
The default value is "0". This hint must be set before SDL_Init()