Fix: Some joystick hats not returning centered correctly on Windows HID

src/OpenTK/Platform/Windows/WinRawJoystick.cs

@@ -342,14 +342,32 @@ namespace OpenTK.Platform.Windows
         HatPosition GetHatPosition(uint value, HidProtocolValueCaps caps)
         {
             if (caps.LogicalMax == 8)
-                return (HatPosition)value;
-            else if (caps.LogicalMax == 7)
             {
+                //Hat states are represented as a plain number from 0-8
+                //with centered being zero
+                //Padding should have already been stripped out, so just cast
+                if (value > 8)
+                {
+                    //Value out of bounds, so return centered
+                    return HatPosition.Centered;
+                }
+                return (HatPosition)value;
+            }
+            if (caps.LogicalMax == 7)
+            {
+                //Hat states are represented as a plain number from 0-7
+                //with centered being 8
+                if (value > 8)
+                {
+                    //Return zero if our value is out of bounds ==> e.g.
+                    //Thrustmaster T-Flight Hotas X returns 15 for the centered position
+                    return HatPosition.Centered;
+                }
                 value++;
                 value %= 9;
                 return (HatPosition)value;
             }
-            else
+            //The HID report length is unsupported
             return HatPosition.Centered;
         }