title: Render everything that is in JFrame to a BufferedImage and then process this image
body: <p>I want to render everything that is in my JFrame to be rendered to a texture. Like this:
  <a href="https://i.stack.imgur.com/Xh9Rl.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Xh9Rl.png" alt="enter image description here" /></a></p>
  <p>Is there any method to do this? Maybe I should render Graphics to a texture? If yes how?</p>
  <p>When image is rendered to a texure, I want to process it (make it lighter, add bloom, blur). Is this possible to do without any libraries?</p>