[Wine] When will Wine use Direct3D directly?

[s3a]

According to http://www.phoronix.com/scan.php?page=article&item=mesa_gallium3d_d3d11&num=1, Direct3D 10 and 11 are supported in Linux natively. Is this only with the open source drivers? Anyone have an approximation as to when Direct3D Windows games will use this instead of having the added overhead of translating to OpenGL?

Any input would be appreciated!
Thanks in advance!