Function ulSetGamepadDetails 

pub unsafe extern "C" fn ulSetGamepadDetails(
    renderer: ULRenderer,
    index: c_uint,
    id: ULString,
    axis_count: c_uint,
    button_count: c_uint,
)

Describe the details of a gamepad, to be used with ulFireGamepadEvent and related events below. This can be called multiple times with the same index if the details change.

@param renderer The active renderer instance.

@param index The unique index (or “connection slot”) of the gamepad. For example, controller #1 would be “1”, controller #2 would be “2” and so on.

@param id A string ID representing the device, this will be made available in JavaScript as gamepad.id

@param axis_count The number of axes on the device.

@param button_count The number of buttons on the device.