How to enable dx11 and AA?

[civvver]

I just installed civ5 on my new computer, it's very capable of running civ5 at high settings (core i5, gtx 460 gpu), and I am running windows7. But for some reason when I launch it says dx9 is recommended and I can't select dx11. Also in the video options I am not able to select anti aliasing. Is anti aliasing only enabled with dx11? Do I need to change something in my gpu setup to enable it? I know sometimes you can select to let the software control AA and some games you have to do it with the hardware management.

 

[tokala]

Maybe Steam is running in Vista compatibility mode? That was for me the reason DX11 was not available. AA in DX 9 mode can be forced via 3rd party tools like nhancer

 

[Rick80]

Thanks for the reply Tokala, I'd the same problem and I resolved!