FIX: Correct north, east, south, west bindings for Switch Pro Controller to match the physical layout of the device

Assets/Tests/InputSystem/Plugins/iOSTests.cs

@@ -56,13 +56,65 @@ public void Devices_SupportsiOSGamePad(string product, Type deviceType, Type par
         Assert.That(gamepad.rightTrigger.ReadValue(), Is.EqualTo(0.456).Within(0.000001));
 
         AssertButtonPress(gamepad, new iOSGameControllerState().WithButton(iOSButton.A), gamepad.buttonSouth);
+        AssertButtonPress(gamepad, new iOSGameControllerState().WithButton(iOSButton.A), gamepad.aButton);
         AssertButtonPress(gamepad, new iOSGameControllerState().WithButton(iOSButton.X), gamepad.buttonWest);
+        AssertButtonPress(gamepad, new iOSGameControllerState().WithButton(iOSButton.X), gamepad.xButton);
         AssertButtonPress(gamepad, new iOSGameControllerState().WithButton(iOSButton.Y), gamepad.buttonNorth);
+        AssertButtonPress(gamepad, new iOSGameControllerState().WithButton(iOSButton.Y), gamepad.yButton);
         AssertButtonPress(gamepad, new iOSGameControllerState().WithButton(iOSButton.B), gamepad.buttonEast);
+        AssertButtonPress(gamepad, new iOSGameControllerState().WithButton(iOSButton.B), gamepad.bButton);
         AssertButtonPress(gamepad, new iOSGameControllerState().WithButton(iOSButton.LeftShoulder), gamepad.leftShoulder);
         AssertButtonPress(gamepad, new iOSGameControllerState().WithButton(iOSButton.RightShoulder), gamepad.rightShoulder);
     }
 
+    [Test]
+    [Category("Devices")]
+    // this is a new test, as we need to assert the Nintendo layout (e.g. buttonSouth == B button)
+    public void Devices_SupportsSwitchProControlleriOS()
+    {
+        var device = InputSystem.AddDevice(
+            new InputDeviceDescription
+            {
+                interfaceName = "iOS",
+                deviceClass = "iOSGameController",
+                product = "Pro Controller"
+            });
+        Assert.That(device, Is.TypeOf(typeof(SwitchProControlleriOS)));
+        Assert.That(device, Is.InstanceOf(typeof(SwitchProController)));
+        Assert.That(device, Is.InstanceOf(typeof(Gamepad)));
+
+        var gamepad = (SwitchProControlleriOS)device;
+
+        InputSystem.QueueStateEvent(gamepad,
+            new iOSGameControllerStateSwappedFaceButtons()
+                .WithButton(iOSButton.LeftTrigger, true, 0.123f)
+                .WithButton(iOSButton.RightTrigger, true, 0.456f)
+                .WithAxis(iOSAxis.LeftStickX, 0.789f)
+                .WithAxis(iOSAxis.LeftStickY, 0.987f)
+                .WithAxis(iOSAxis.RightStickX, 0.654f)
+                .WithAxis(iOSAxis.RightStickY, 0.321f));
+        InputSystem.Update();
+
+        var leftStickDeadzone = gamepad.leftStick.TryGetProcessor<StickDeadzoneProcessor>();
+        var rightStickDeadzone = gamepad.leftStick.TryGetProcessor<StickDeadzoneProcessor>();
+
+        Assert.That(gamepad.leftStick.ReadValue(), Is.EqualTo(leftStickDeadzone.Process(new Vector2(0.789f, 0.987f))));
+        Assert.That(gamepad.rightStick.ReadValue(), Is.EqualTo(rightStickDeadzone.Process(new Vector2(0.654f, 0.321f))));
+        Assert.That(gamepad.leftTrigger.ReadValue(), Is.EqualTo(0.123).Within(0.000001));
+        Assert.That(gamepad.rightTrigger.ReadValue(), Is.EqualTo(0.456).Within(0.000001));
+        // testing for Pro Controller layout...
+        AssertButtonPress(gamepad, new iOSGameControllerStateSwappedFaceButtons().WithButton(iOSButton.A), gamepad.buttonEast);
+        AssertButtonPress(gamepad, new iOSGameControllerStateSwappedFaceButtons().WithButton(iOSButton.A), gamepad.aButton);
+        AssertButtonPress(gamepad, new iOSGameControllerStateSwappedFaceButtons().WithButton(iOSButton.X), gamepad.buttonNorth);
+        AssertButtonPress(gamepad, new iOSGameControllerStateSwappedFaceButtons().WithButton(iOSButton.X), gamepad.xButton);
+        AssertButtonPress(gamepad, new iOSGameControllerStateSwappedFaceButtons().WithButton(iOSButton.Y), gamepad.buttonWest);
+        AssertButtonPress(gamepad, new iOSGameControllerStateSwappedFaceButtons().WithButton(iOSButton.Y), gamepad.yButton);
+        AssertButtonPress(gamepad, new iOSGameControllerStateSwappedFaceButtons().WithButton(iOSButton.B), gamepad.buttonSouth);
+        AssertButtonPress(gamepad, new iOSGameControllerStateSwappedFaceButtons().WithButton(iOSButton.B), gamepad.bButton);
+        AssertButtonPress(gamepad, new iOSGameControllerStateSwappedFaceButtons().WithButton(iOSButton.LeftShoulder), gamepad.leftShoulder);
+        AssertButtonPress(gamepad, new iOSGameControllerStateSwappedFaceButtons().WithButton(iOSButton.RightShoulder), gamepad.rightShoulder);
+    }
+
     [Test]
     [Category("Devices")]
     [TestCase("Gravity", typeof(GravitySensor))]

Assets/Tests/InputSystem/SwitchTests.cs

@@ -56,9 +56,13 @@ public void Devices_SupportsHIDNpad()
         Assert.That(currentRight, Is.EqualTo(expectedRight).Using(new Vector2EqualityComparer(0.01f)));
 
         AssertButtonPress(controller, StateWithButton(SwitchProControllerHIDInputState.Button.A), controller.buttonEast);
+        AssertButtonPress(controller, StateWithButton(SwitchProControllerHIDInputState.Button.A), controller.aButton);
         AssertButtonPress(controller, StateWithButton(SwitchProControllerHIDInputState.Button.B), controller.buttonSouth);
+        AssertButtonPress(controller, StateWithButton(SwitchProControllerHIDInputState.Button.B), controller.bButton);
         AssertButtonPress(controller, StateWithButton(SwitchProControllerHIDInputState.Button.X), controller.buttonNorth);
+        AssertButtonPress(controller, StateWithButton(SwitchProControllerHIDInputState.Button.X), controller.xButton);
         AssertButtonPress(controller, StateWithButton(SwitchProControllerHIDInputState.Button.Y), controller.buttonWest);
+        AssertButtonPress(controller, StateWithButton(SwitchProControllerHIDInputState.Button.Y), controller.yButton);
         AssertButtonPress(controller, StateWithButton(SwitchProControllerHIDInputState.Button.StickL), controller.leftStickButton);
         AssertButtonPress(controller, StateWithButton(SwitchProControllerHIDInputState.Button.StickR), controller.rightStickButton);
         AssertButtonPress(controller, StateWithButton(SwitchProControllerHIDInputState.Button.L), controller.leftShoulder);
@@ -168,6 +172,7 @@ public void Devices_SupportsSwitchLikeControllers(int vendorId, int productId)
             });
 
         Assert.That(device, Is.TypeOf<SwitchProControllerHID>());
+        Assert.That(device, Is.InstanceOf(typeof(SwitchProController)));
     }
 
 #endif

Packages/com.unity.inputsystem/CHANGELOG.md

@@ -13,6 +13,10 @@ however, it has to be formatted properly to pass verification tests.
 ### Added
 - Exposed MediaPlayPause, MediaRewind, MediaForward keys on Keyboard.
 
+### Fixed
+- Fixed `buttonSouth` returning the state of the east button (and so on for all the compass named buttons) when using a Nintendo Switch Pro Controller on iOS [ISXB-1632](issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1632)
+- Fixed `aButton` returning the state of the east button (and so on for all the letter named buttons) when using a Nintendo Switch Pro Controller on Standalone & iOS [ISXB-1632](issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1632)
+
 ## [1.14.2] - 2025-08-05
 
 ### Fixed

Packages/com.unity.inputsystem/InputSystem/Devices/Gamepad.cs

@@ -806,4 +806,39 @@ public virtual void SetMotorSpeeds(float lowFrequency, float highFrequency)
         private static int s_GamepadCount;
         private static Gamepad[] s_Gamepads;
     }
+
+    /// <summary>
+    /// Base class for Nintendo Switch Pro Controllers that provides the correct button mappings for Nintendo's face button layout where A is east, B is south, X is north, and Y is west.
+    /// If you use InputSystem.GetDevice and the ABXY properties to represent the labels on the device, you must query for this class
+    /// </summary>
+    public abstract class SwitchProController : Gamepad
+    {
+        /// <summary>
+        /// A Button for a Nintendo Switch Pro Controller.
+        /// If querying via script, ensure you cast the device to a Switch Pro Controller class, rather than using the Gamepad class.
+        /// The gamepad class will return the state of buttonSouth, whereas this class returns the state of buttonEast
+        /// </summary>
+        public new ButtonControl aButton => buttonEast;
+
+        /// <summary>
+        /// B Button for a Nintendo Switch Pro Controller.
+        /// If querying via script, ensure you cast the device to a Switch Pro Controller class, rather than using the Gamepad class.
+        /// The gamepad class will return the state of buttonEast, whereas this class returns the state of buttonSouth
+        /// </summary>
+        public new ButtonControl bButton => buttonSouth;
+
+        /// <summary>
+        /// Y Button for a Nintendo Switch Pro Controller.
+        /// If querying via script, ensure you cast the device to a Switch Pro Controller class, rather than using the Gamepad class.
+        /// The gamepad class will return the state of buttonNorth, whereas this class returns the state of buttonWest
+        /// </summary>
+        public new ButtonControl yButton => buttonWest;
+
+        /// <summary>
+        /// X Button for a Nintendo Switch Pro Controller.
+        /// If querying via script, ensure you cast the device to a Switch Pro Controller class, rather than using the Gamepad class.
+        /// The gamepad class will return the state of buttonWest, whereas this class returns the state of buttonNorth
+        /// </summary>
+        public new ButtonControl xButton => buttonNorth;
+    }
 }

Packages/com.unity.inputsystem/InputSystem/Plugins/Switch/SwitchProControllerHID.cs

@@ -147,7 +147,7 @@ namespace UnityEngine.InputSystem.Switch
     /// A Nintendo Switch Pro controller connected to a desktop mac/windows PC using the HID interface.
     /// </summary>
     [InputControlLayout(stateType = typeof(SwitchProControllerHIDInputState), displayName = "Switch Pro Controller")]
-    public class SwitchProControllerHID : Gamepad, IInputStateCallbackReceiver, IEventPreProcessor
+    public class SwitchProControllerHID : SwitchProController, IInputStateCallbackReceiver, IEventPreProcessor
     {
         [InputControl(name = "capture", displayName = "Capture")]
         public ButtonControl captureButton { get; protected set; }

Packages/com.unity.inputsystem/InputSystem/Plugins/iOS/IOSGameController.cs

@@ -1,5 +1,6 @@
 #if UNITY_EDITOR || UNITY_IOS || UNITY_TVOS || UNITY_VISIONOS || PACKAGE_DOCS_GENERATION
 using System.Runtime.InteropServices;
+using UnityEngine.InputSystem.Controls;
 using UnityEngine.InputSystem.DualShock;
 using UnityEngine.InputSystem.Layouts;
 using UnityEngine.InputSystem.LowLevel;
@@ -95,6 +96,66 @@
             return this;
         }
     }
+
+    /// <summary>
+    /// State for iOS Gamepads using a layout where B button is south, A is east, X is north, and Y is west
+    /// This layout is typically seen on Nintendo gamepads, such as the Switch Pro Controller.
+    /// </summary>
+    [StructLayout(LayoutKind.Sequential)]
+    internal unsafe struct iOSGameControllerStateSwappedFaceButtons : IInputStateTypeInfo
+    {
+        public static FourCC kFormat = new FourCC('I', 'G', 'C', ' ');
+        public const int MaxButtons = (int)iOSButton.Select + 1;
+        public const int MaxAxis = (int)iOSAxis.RightStickY + 1;
+
+        [InputControl(name = "dpad")]
+        [InputControl(name = "dpad/up", bit = (uint)iOSButton.DpadUp)]
+        [InputControl(name = "dpad/right", bit = (uint)iOSButton.DpadRight)]
+        [InputControl(name = "dpad/down", bit = (uint)iOSButton.DpadDown)]
+        [InputControl(name = "dpad/left", bit = (uint)iOSButton.DpadLeft)]
+        [InputControl(name = "buttonSouth", bit = (uint)iOSButton.B)]
+        [InputControl(name = "buttonWest", bit = (uint)iOSButton.Y)]
+        [InputControl(name = "buttonNorth", bit = (uint)iOSButton.X)]
+        [InputControl(name = "buttonEast", bit = (uint)iOSButton.A)]
+        [InputControl(name = "leftStickPress", bit = (uint)iOSButton.LeftStick)]
+        [InputControl(name = "rightStickPress", bit = (uint)iOSButton.RightStick)]
+        [InputControl(name = "leftShoulder", bit = (uint)iOSButton.LeftShoulder)]
+        [InputControl(name = "rightShoulder", bit = (uint)iOSButton.RightShoulder)]
+        [InputControl(name = "start", bit = (uint)iOSButton.Start)]
+        [InputControl(name = "select", bit = (uint)iOSButton.Select)]
+        public uint buttons;
+
+        [InputControl(name = "leftTrigger", offset = sizeof(uint) + sizeof(float) * (uint)iOSButton.LeftTrigger)]
+        [InputControl(name = "rightTrigger", offset = sizeof(uint) + sizeof(float) * (uint)iOSButton.RightTrigger)]
+        public fixed float buttonValues[MaxButtons];
+
+        private const uint kAxisOffset = sizeof(uint) + sizeof(float) * MaxButtons;
+        [InputControl(name = "leftStick", offset = (uint)iOSAxis.LeftStickX * sizeof(float) + kAxisOffset)]
+        [InputControl(name = "rightStick", offset = (uint)iOSAxis.RightStickX * sizeof(float) + kAxisOffset)]
+        public fixed float axisValues[MaxAxis];
+
+        public FourCC format => kFormat;
+
+        public iOSGameControllerStateSwappedFaceButtons WithButton(iOSButton button, bool value = true, float rawValue = 1.0f)
+        {
+            buttonValues[(int)button] = rawValue;
+
+            Debug.Assert((int)button < 32, $"Expected button < 32, so we fit into the 32 bit wide bitmask");
+            var bit = 1U << (int)button;
+            if (value)
+                buttons |= bit;
+            else
+                buttons &= ~bit;
+
+            return this;
+        }
+
+        public iOSGameControllerStateSwappedFaceButtons WithAxis(iOSAxis axis, float value)
+        {
+            axisValues[(int)axis] = value;
+            return this;
+        }
+    }
 }
 
 namespace UnityEngine.InputSystem.iOS
@@ -134,5 +195,14 @@
     public class DualSenseGampadiOS : DualShockGamepad
     {
     }
+
+    /// <summary>
+    /// A Switch Pro Controller connected to an iOS device.
+    /// If you use InputSystem.GetDevice, you must query for SwitchProControlleriOS rather than Gamepad in order for aButton, bButton, yButton and xButton to be correct
+    /// </summary>
+    [InputControlLayout(stateType = typeof(iOSGameControllerStateSwappedFaceButtons), displayName = "iOS Switch Pro Controller Gamepad")]
+    public class SwitchProControlleriOS : SwitchProController
+    {
+    }
 }
 #endif // UNITY_EDITOR || UNITY_IOS || UNITY_TVOS || UNITY_VISIONOS

Packages/com.unity.inputsystem/InputSystem/Plugins/iOS/iOSSupport.cs

@@ -37,6 +37,12 @@ public static void Initialize()
                     .WithDeviceClass("iOSGameController")
                     .WithProduct("DualSense Wireless Controller"));
 
+            InputSystem.RegisterLayout<SwitchProControlleriOS>("SwitchProGamepadiOS",
+                matches: new InputDeviceMatcher()
+                    .WithInterface("iOS")
+                    .WithDeviceClass("iOSGameController")
+                    .WithProduct("Pro Controller"));
+
             InputSystem.RegisterLayoutMatcher("GravitySensor",
                 new InputDeviceMatcher()
                     .WithInterface("iOS")