How to draw to frame buffer without rendering

[fmaxgarcia]

Hey everyone,
I'm new to LWJGL, so I apologize if this question seems trivial, but I haven't been able to find the answer to my problem.

I am running a simple game with OpenGL and LWJGL and everything works fine. I have a research idea for which I am going to be using this game.
This work depends on my being able to access the raw pixel data (which I am able to do through glReadPixels), so far so good. Now the only issue is that, actually rendering the current frames to screen becomes a bottleneck, so I would like to keep everything in memory without any display.

My question is, is it possible to run the game without drawing or displaying anything to screen? As in, I have some frame in memory (which I can access through the frame buffer), I move the character in the game and the frame gets updated in memory (so I can access it again through the frame buffer).

Thanks a lot!

[quew8]

In LWJGL3, it is as simple as never setting the glfw window to be visible. You get an offscreen context which works as normal except that there is no visible window.