How can i make Screenshots with Gizmos?

Hello Guys,

i found a script here to take a HiResScreenshots from the Camera as a RenderTexture. This works fine in Editor-Mode too. I changed the script from a MonoBehaviour to a standard class, to use this as a GUILayout.Button-Function.

My problem is i need the Gizmos in the Screenshot! Unity allows you to show/hide the Gizmos in the Game-View via "Gizmos"-toggle button. How can i modify the script to render Gizmos to the RenderTexture, too?

 using UnityEngine;
 using System.Collections;
 
 public class HiResScreenShots {
 
     private int resWidth = 4096; 
     private int resHeight = 4096;
 
     private string screenshotPath = Application.dataPath;
     private string screenshotNamePrefix = "screen";
 
     private UnityEngine.Camera cameraObject = null;
 
     public HiResScreenShots(int _width, int _height, UnityEngine.Camera _cameraObject, string _screenshotPath, string _screenshotNamePrefix) {
         this.resWidth = _width;
         this.resHeight = _height;
         this.cameraObject = _cameraObject;
         this.screenshotPath = _screenshotPath;
         this.screenshotNamePrefix = _screenshotNamePrefix;
     }
 
     private static string ScreenshotName(string screenshotPath, string screenshotNamePrefix, int width, int height) {
         return string.Format("{0}/{1}_{2}x{3}_{4}.png", 
              screenshotPath, 
              screenshotNamePrefix,
              width, height, 
              System.DateTime.Now.ToString("yyyy-MM-dd_HH-mm-ss"));
     }
 
     public void TakeScreenshot()
     {
         if (cameraObject != null) {
             RenderTexture rt = new RenderTexture(resWidth, resHeight, 24);
             cameraObject.targetTexture = rt;
             Texture2D screenshot = new Texture2D(resWidth, resHeight, TextureFormat.RGB24, false);
             cameraObject.Render();
             RenderTexture.active = rt;
             screenshot.ReadPixels(new Rect(0, 0, resWidth, resHeight), 0, 0);
             cameraObject.targetTexture = null;
             RenderTexture.active = null;
             byte[] bytes = screenshot.EncodeToPNG();
             string filename = ScreenshotName(screenshotPath, screenshotNamePrefix, resWidth, resHeight);
             System.IO.File.WriteAllBytes(filename, bytes);
             Debug.Log(string.Format("HiResScreenShot: Took screenshot to: {0}", filename));
         }
     }
 }