up and left input directions not recognised using controller adapter on macOS

Description

Controller up and left directions not recognised when using a Genesis controller connected to the "GENESIS Controller USB" adapter

Expected behavior

• all controller inputs should be recognised

Actual behavior

• up and left directions not recognised

Steps to reproduce the bug

1. plug in controller adapter "GENESIS Controller USB"
2. plug in controller
3. start RetroArch
4. configure controller

The inputs do not respond even after adding the inputs manually to the autoconfig.

input_driver = "hid"
input_device = "GENESIS Controller USB"
input_vendor_id = "4754"
input_product_id = "18245"
input_start_btn = "6"
input_up_axis = "-1"    # added manually
input_down_axis = "+1"
input_left_axis = "-0"    # added manually
input_right_axis = "+0"
input_a_btn = "0"
input_b_btn = "1"
input_x_btn = "2"

Similar cfg for dinput: here

Bisect Results

• 1.90 happens
• 1.96 happens
• 1.99 happens

Environment information

• OS: macOS Big Sur 11.6 (20G165)

Notes

• the centre position for the adapter is actually not centre (off by one? rounding error?)
• this seems to be throwing off the detection of up/left in RA

Other tests

The following 1 app also misses up/left

• Enjoy2

The following 7 apps report up/left correctly

• Controllers
  
• Controllers Lite
  
• Enjoyable
  
• Joystick Doctor
  
• Joystick Monitor
  
• Joystick Show
  
• SDL GamepadTool
  

Start by reproducing the missing up and left inputs on macOS with the GENESIS Controller USB adapter, then compare the HID behavior with dinput/GENESIS_ATARI Controller USB.cfg. Inspect RetroArch's controller input and center-position handling; done means the adapter recognizes all directions, including up and left, during configuration.