Missing remotefx 3D adapter in Hyper-v Server 2012 R2

I have installed Hyper-V Server 2012 R2 and have installed all the available roles as can be seen in pic2.

I have also installed GPU ATI HD7750 and installed its drivers to the HOST as you can see also in the pic2 below.

Now the problem is that I can't seem to add RemoteFX 3D adapter to my Win 8.1 ENT evaluation VM.

Could someone please guide me in the right direction?

Pic1

http://social.technet.microsoft.com/Forums/getfile/436927

Pic2

http://social.technet.microsoft.com/Forums/getfile/436928