Is it possible to save the animation of openGL in the form of series of bitmaps or to grab the animations in some sort of buffer for further processing.......... if so then what is the function that helps us do so........ Reply Needed ASAP

depending on want you want to do you could simply render to a texture and use that for whatever you want to do or you could read from the framebuffer directly with glGetPixel which is horribly slow but still might be what you want. as i said i largly depends on what you are going to do