使用 Unity 和 ARKit 的屏幕截图

Question

我正在使用 Unity 应用程序截屏

ScreenCapture.CaptureScreenshot ("screenshot.png", 2);

但是 ARKit 渲染的 AR 背景最终是完全黑色的，而其他游戏对象正确渲染（在黑色空间中浮动）。

其他人遇到过这个问题吗？ 有已知的解决方法吗？

Answer 1

ScreenCapture.CaptureScreenshot 的错误太多。此时不要使用此功能在 Unity 中执行任何屏幕截图。不只是iOS，编辑器的这个功能也有bug。

这是该功能的翻版，可以截取 png、jpeg 或 exr 格式的屏幕截图。

IEnumerator CaptureScreenshot(string filename, ScreenshotFormat screenshotFormat)
{
    //Wait for end of frame
    yield return new WaitForEndOfFrame();

    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();

    string filePath = Path.Combine(Application.persistentDataPath, "images");
    byte[] imageBytes = null;

    //Convert to png/jpeg/exr
    if (screenshotFormat == ScreenshotFormat.PNG)
    {
        filePath = Path.Combine(filePath, filename + ".png");
        createDir(filePath);
        imageBytes = screenImage.EncodeToPNG();
    }
    else if (screenshotFormat == ScreenshotFormat.JPEG)
    {
        filePath = Path.Combine(filePath, filename + ".jpeg");
        createDir(filePath);
        imageBytes = screenImage.EncodeToJPG();
    }
    else if (screenshotFormat == ScreenshotFormat.EXR)
    {
        filePath = Path.Combine(filePath, filename + ".exr");
        createDir(filePath);
        imageBytes = screenImage.EncodeToEXR();
    }

    //Save image to file
    System.IO.File.WriteAllBytes(filePath, imageBytes);
    Debug.Log("Saved Data to: " + filePath.Replace("/", "\\"));
}

void createDir(string dir)
{
    //Create Directory if it does not exist
    if (!Directory.Exists(Path.GetDirectoryName(dir)))
    {
        Directory.CreateDirectory(Path.GetDirectoryName(dir));
    }
}

public enum ScreenshotFormat
{
    PNG, JPEG, EXR
}

用法：

void Start()
{
    StartCoroutine(CaptureScreenshot("screenshot", ScreenshotFormat.PNG));
}