Veature request about dualgpu cards: can i use both gpus for openCL ? and (openGL?)

[Qaridarium]

is it possible to use both GPUs on dual cards if i buy a compatible card for openCL with the opensource driver?

or will it be possible in the future?

can i run on one gpu openGL for gaming and and on the other GPU openCL ?

is this useful or just painful ?

i think about a replacement card for my hd4770 because its a lost generation of hardware......