Update WDDM 1.0 to 1.1

Hi,

I'm to VM fusion and I have just installed a win7-64bit-Pro on fusion 6.0.5. I am now working on a project which required WDDM 1.1. I just mine using dxdiag where it is 1.0 on my OS.

Can anyone tell me how to update WDDM to 1.1for the VMware SVGA display adapter?

(I have installed vmware tools and I don't know if this may help solve this problem)

Thanks