유니티에서 안드로이드의 DP, iOS의 포인트 해상도를 사용하기

CanvasSizeToMobilePointSize.cs

using UnityEngine;
using UnityEngine.UI;

public class CanvasSizeToMobilePointSize : MonoBehaviour
{
    private CanvasScaler _canvasScaler;

    private void Awake()
    {
        _canvasScaler = GetComponent<CanvasScaler>();
        Resize();
    }

    private void Resize()
    {
        if (Application.isEditor)
        {
            return;
        }

        _canvasScaler.uiScaleMode = CanvasScaler.ScaleMode.ConstantPixelSize;
#if UNITY_ANDROID
        _canvasScaler.scaleFactor = Screen.dpi / 160;
#elif UNITY_IOS
        _canvasScaler.scaleFactor = MyApplePlugin.GetNativeScaleFactor();
#endif
    }
}

MyApplePlugin.cs

using System.Runtime.InteropServices;
using UnityEngine;

public static class MyApplePlugin
{
#if UNITY_IOS
      [DllImport("__Internal")]
      private static extern float _GetNativeScaleFactor();

      public static float GetNativeScaleFactor()
      {
          return _GetNativeScaleFactor();
      }
#endif
}

MyApplePlugin.mm

+(float)getNativeScaleFactor
{
    UIScreen* uiScreen = [UIScreen mainScreen];
    return uiScreen.nativeScale;
}
@end
extern "C"
{
    float _GetNativeScaleFactor() {
        return [MyApplePlugin getNativeScaleFactor];
    }
}