Question Need help with screen capture

Code (CSharp):

1.  
2.     private IEnumerator CutSpriteFromScreen()
3.       {
4.         string folderPath = Application.persistentDataPath; // the path of your project folder
5.         string screenshotName = "Screenshot_" + System.DateTime.Now.ToString("dd-MM-yyyy-HH-mm-ss") + ".png";
6.         yield return new WaitForEndOfFrame();
7.         int width  = 783, height = 1050, startX = 569, startY = 12;
8.         var tex = new Texture2D(width, height, TextureFormat.RGB24, false);
9.         Rect rex = new Rect(startX, startY, width, height);
10.         tex.ReadPixels(rex, 0, 0);
11.         tex.Apply();
12.         var bytes = tex.EncodeToPNG();
13.         Destroy(tex);
14.         File.WriteAllBytes(System.IO.Path.Combine(folderPath, screenshotName), bytes);
15.       }
16.  

This is my code currently. It does indeed capture the specified portion of the screen, but at VERY low resolution. The image on the screen is sharp; the captured image is not. I need this to be super-high resolution, for printing professionally. Can anyone help with this?

 

Any reason you're not just using ScreenCapture.CaptureScreenshot?

 

Yes, because I wanted to capture only a portion of the screen. Unless there's a way to crop the image after the fact...

 

yes you can use getpixels and setpixels on a new texture

 

Could you provide me a code sample for the getpixels/setpixels?

 

You are saying the PNG does not have a size of 783 x 1050? What's your window size?

By the way, the selected region is taller than it is wide. Is that intentional?

 

Code (CSharp):

1.    
2.         private IEnumerator CutSpriteFromScreen()
3.           {
4.      
5.  
6.             int width  = 783, height = 1050, startX = 569, startY = 12;
7.  
8.  
9.  
10. Color[] p = screenshotToCrop.GetPixels(startX, startY, width , height);
11.  
12.             var tex = new Texture2D(width, height, TextureFormat.RGB24, false);
13.  
14. tex.SetPixels(p);
15.    
16.  
17.             tex.Apply();
18.             var bytes = tex.EncodeToPNG();
19.             Destroy(tex);
20.             File.WriteAllBytes(System.IO.Path.Combine(folderPath, screenshotName), bytes);
21.           }
22.    
23.  

 

screenshotToCrop is not a valid Unity command.

 

Q: You are saying the PNG does not have a size of 783 x 1050?
A: Yes, it actually does.

Q: What's your window size?
A: Currently, 1920x1080.

Q: By the way, the selected region is taller than it is wide. Is that intentional?
A: Yes; it's representative of an 8 1/2 x 11 page.

I'm guessing that to start, I need to increase the resolution of my window. I'm going to try that today.

 

Ok, my window size is now 3840 x 2160, and the image size is now 1528 x 2056.
The resolution is MUCH improved. I'm wondering if I can get it even better...

 

My window size is now 7680 x 4320, and the image size is now 3022 x 4056.
The resolution is stunning. I don't think I'm going to mess with it any more.

 

You could render to a render target that is bigger than the screen but no need to go through the effort if a big window works too.