I think you are misunderstanding open GL. Most if not all programs that offer it also offer a way to offload the graphics processing back to the processor if an Open GL graphics card is not available. also Open GL is only involved in the on screen preview. It allows you to get a better idea of what your final render will look like. Open GL is what games are using to get those awsome graphics and effects. The final render will probably still be handled by the P4 or P5 rendering engine just like the current itteration. (speculation) I'm sure CL would answer that unless they've changed the rendering engine. (Which i doubt)