unity - 拍照后不释放 GPU RAM

【问题标题】：unity - GPU RAM is not released after taking a photounity - 拍照后不释放 GPU RAM
【发布时间】：2019-03-22 08:27:42
【问题描述】：

如何在拍照后释放 gpu ram 内存当达到〜1000张照片时，我的计算机卡住了，因为我使用了所有的gpu ram 现在我正在使用下面的代码来创建照片：

IEnumerator takePhoto(字符串文件名) { yield return new WaitForEndOfFrame();

    // Debug.Log(gameObject.name + " Save Color Photo");

    Texture2D screenImage = new Texture2D(Screen.width, Screen.height);
    //Get Image from screen
    screenImage.ReadPixels(new Rect(0, 0, Screen.width, Screen.height), 0, 0);
    screenImage.Apply();

    if(resolution == Resolution.Half)
    {
        screenImage = Utils.Resize(screenImage, Screen.width / 2, Screen.height / 2);
        // screenImage.Apply();
    }

    //Convert to png
    byte[] imageBytes = screenImage.EncodeToPNG();

    //Save image to file
    System.IO.File.WriteAllBytes(filename + "_scene.png", imageBytes);
}

【问题讨论】：

标签： unity3d

【解决方案1】：

Textur2D 是一个 Unity 对象，这意味着它将在脚本范围之外持续存在（它存在于场景中）。要么使用单例模式，这样你只需要一个纹理块在内存中，要么你需要Destroy它：

    //Save image to file
    System.IO.File.WriteAllBytes(filename + "_scene.png", imageBytes);

    // Destroy Textur2D Object
    Destroy(screenImage);
}

我个人推荐单例模式：

// Create texture as class-level field, outside of function
Texture2D screenImage = new Texture2D(Screen.width, Screen.height);

IEnumerator takePhoto(string filename) { yield return new WaitForEndOfFrame();

    // Debug.Log(gameObject.name + " Save Color Photo");

    //Get Image from screen
    screenImage.ReadPixels(new Rect(0, 0, Screen.width, Screen.height), 0, 0);
    screenImage.Apply();

【讨论】：