off screen render using PBuffer

[kapcip]

I need to implement off screen rendering where I can draw without creating the Display Window.
Then I would save the pixels to the file system as JPEG/PNG image.

I've read on Internet that PBuffer is one lead. I created PBuffer and didn't create the Display (Display.create()) but that is not getting updated after each draw or some other operation.

What is the way to do it or any working example of PBuffer?