Quote from trsr
I tried to do that by myself and the result was heavy failure.
I only managed to remove the background itself (and idk how, the logo) but the game still calls in the spinner-fogger-etc.. functions, therefore still causing lag. If i remove those calls, it won't compile...
Pretty much the only thing you had to do in order to stop the background from being drawn is comment out the first line of the drawScreen function, however you would have a weird gradient and if you remove that you get a very buggy background which you can fix by drawing a rectangle where the gradient used to be(I did this by writing some opengl code in immediate mode). I did this but since Hannestahmann already posted a link to what he did there is no reason for me to post mine.