fix off by one with tilt on ps3 guitars (#15144)

src/joystick/hidapi/SDL_hidapi_ps3.c

@@ -347,6 +347,11 @@ static float HIDAPI_DriverPS3_ScaleAccel(Sint16 value)
     return ((float)(value - 511) / 113.0f) * SDL_STANDARD_GRAVITY;
 }
 
+static float HIDAPI_DriverPS3ThirdParty_ScaleAccel(Sint16 value)
+{
+    return ((float)(value - 512) / 113.0f) * SDL_STANDARD_GRAVITY;
+}
+
 static void HIDAPI_DriverPS3_HandleMiniStatePacket(SDL_Joystick *joystick, SDL_DriverPS3_Context *ctx, Uint8 *data, int size)
 {
     Sint16 axis;
@@ -1020,9 +1025,9 @@ static void HIDAPI_DriverPS3ThirdParty_HandleStatePacket19(SDL_Joystick *joystic
     if (ctx->report_sensors) {
         float sensor_data[3];
 
-        sensor_data[0] = -HIDAPI_DriverPS3_ScaleAccel(LOAD16(data[20], data[19]));
-        sensor_data[1] = -HIDAPI_DriverPS3_ScaleAccel(LOAD16(data[22], data[21]));
-        sensor_data[2] = -HIDAPI_DriverPS3_ScaleAccel(LOAD16(data[24], data[23]));
+        sensor_data[0] = -HIDAPI_DriverPS3ThirdParty_ScaleAccel(LOAD16(data[19], data[20]));
+        sensor_data[1] = -HIDAPI_DriverPS3ThirdParty_ScaleAccel(LOAD16(data[21], data[22]));
+        sensor_data[2] = -HIDAPI_DriverPS3ThirdParty_ScaleAccel(LOAD16(data[23], data[24]));
         SDL_SendJoystickSensor(timestamp, joystick, SDL_SENSOR_ACCEL, timestamp, sensor_data, SDL_arraysize(sensor_data));
     }