Topic: Capture the screen in C# to threat it in Unity but with the less possible preformance lost

[EloiStree]

I need to convert the screen(s) to Texture2D in unity to be able to make pixel condition and shadergraph filtering to improve the toolbox OMI. You can use the classic C# and user32 dll to copy the screen but it often crash and is very very slow 400-1000 milliseconds. I use also a java version that take 100-600 ms.

I need something more smooth. Because of performance but also because I would like to create my own virtual desktop version in Unity in an open source way in the future to make working environment.

So apparently they are ways of doing it. But that in skills I don't own. So let's learn new skills.

[EloiStree]

The main topic that send on large range of topic:

• https://stackoverflow.com/questions/5069104/fastest-method-of-screen-capturing-on-windows
  • Fraps like
  • OBS like
  • XDriver
  • Tutor on GDiI (user32) Directx and Windows Media API ways
  • "dc-capture.h" use in OBS
  • AVRecorder: C# open source tool to record screen
  • Java/FFMPeg open source way to do it

[EloiStree]

Using System.Drawing

 // Making fullscreen screenshot
    public static Bitmap makeScreenshot() 
    {
        Bitmap screenshot = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height, PixelFormat.Format32bppArgb);

            Graphics gfxScreenshot = Graphics.FromImage(screenshot);

            gfxScreenshot.CopyFromScreen(Screen.PrimaryScreen.Bounds.X, Screen.PrimaryScreen.Bounds.Y, 0, 0, Screen.PrimaryScreen.Bounds.Size, CopyPixelOperation.SourceCopy);

            gfxScreenshot.Dispose();

            return screenshot;
    }