I'm making an online strategy game.

I want players to be able to embed overview images of their buildings to see how they're profits are doing and stuff. Like you could have a view of a building and a graph somewhere on the image. You could customize what information you want on it. The idea is you can embed it as a forum signature.

The problem is the Linux server doesn't have a graphics card for opengl. I only know how to write images using libjpeg and libpng. Also I don't know what library to use to respond to and process image requests.

What lib do you use for an http server? Berkeley lib or something? Also how would I render the building scene.