从相机中取截图然后将其禁用(WaitforendOffRame)是正确的吗?

Question

我制作了这个非常简单的脚本，该脚本应附加到带有RenderTexure的无活动相机游戏对象上。如果相机游戏对象处于活动状态，则该假设仅将一个帧记录到RenderTexure，然后将其保存到一个.png的路径中。之后应禁用相机。

    public static string path;
void Update()
{
    StartCoroutine(SSOT());
}
public static void SaveRTToFileToSharing()
{
    RenderTexture rt = Resources.Load<RenderTexture>(@"Render Texure/ScreenShot") as RenderTexture;
    RenderTexture.active = rt;
    Texture2D tex = new Texture2D(rt.width, rt.height, TextureFormat.RGB24, false);
    tex.ReadPixels(new Rect(0, 0, rt.width, rt.height), 0, 0);
    //RenderTexture.active = null;
    tex.Apply();
    byte[] bytes;
    bytes = tex.EncodeToPNG();
    path = Application.persistentDataPath + "Test Shot.png";
    System.IO.File.WriteAllBytes(path, bytes);
    Destroy(tex);
}
IEnumerator SSOT()
{
    yield return new WaitForEndOfFrame();
    SaveRTToFileToSharing();
    gameObject.SetActive(false);
}

该脚本按照我的预期工作，但我不确定它是否真的只记录一帧或更多帧。如果您要更改任何东西，您会更改什么？

Answer 1

应该没关系，因为您在启用的同一帧中停用对象。

无论如何只是为了确保我而不是使用Update，这就是每一个帧，只需将StartCoroutine调用到OnEnable，而每次都称为游戏对象。

private void OnEnable()
{
    StartCoroutine(SSOT());
}

---

为了使其更具性能，您只能做几件事并重用它们 - 取决于您的优先级：如果您的优先级是很少的记忆使用情况，并且性能对屏幕截图无关紧要，那么您就可以了当然。否则我可能会像

那样做

private RenderTexture rt;
private Texture2D tex;
private string path;
private void Awake ()
{
    // Do this only once and keep it around while the game is running
    rt = (RenderTexture) Resources.Load<RenderTexture>(@"Render Texure/ScreenShot");
    tex = new Texture2D(rt.width, rt.height, TextureFormat.RGB24, false);
    path = Application.persistentDataPath + "Test Shot.png";
}
private void SaveRTToFileToSharing()
{
    RenderTexture.active = rt;
    tex.ReadPixels(new Rect(0, 0, rt.width, rt.height), 0, 0);
    //RenderTexture.active = null;
    tex.Apply();
    byte[] bytes;
    bytes = tex.EncodeToPNG();
    // This happens async so your game can continue meanwhile 
    using (var fileStream = File.Open(path, FileMode.OpenOrCreate, FileAccess.Write))
    {
        fileStream.WriteAsync(bytes, 0, bytes.Length);
    }
}