How to load new scene asynchronously while displaying progress in Unity(in C#)

	using UnityEngine;
	using System.Collections;
	public delegate void ProgressDelegate(float progress);
	public class MyScript {
	public void OnStartMyScene() {
	StartCoroutine(LoadSceneAsyncByName("MySceneName", OnLoadLevelProgressUpdate));
	}
	public static IEnumerator LoadSceneAsyncByName(string nextLevel, ProgressDelegate progressDelegate) {
	AsyncOperation async = UnityEngine.SceneManagement.SceneManager.LoadSceneAsync(nextLevel);
	while (!async.isDone) {
	progressDelegate (async.progress);
	async.allowSceneActivation = async.progress > 0.8;
	yield return null;
	}
	}
	private void OnLoadLevelProgressUpdate(float progress) {
	Debug.Log ("async.progress: " + progress);
	}
	}

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