Version: 2017.4
public static int NextPowerOfTwo (int value);

説明

値以上のもっとも近い 2 のべき乗を返します

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { void Example() { Debug.Log(Mathf.NextPowerOfTwo(7)); Debug.Log(Mathf.NextPowerOfTwo(139)); } }