MSAA should work with all Direct3D applications in Wine. (Wine is using FBOs to implement MSAA for Direct3D)
How nice that a feature supports emulated apps before native ones
That has more to do with the quality of "native" linux ports. Oh, and wine is not an emulator, a native windows game running in wine is more native to linux then a java app or a C# app running in mono.
Perhaps you missed the smiley
Also it has nothing to do with port quality. It's simply often easier to use an AA visual, so guess which method most apps use.
It gets better:
r600g: use better sample positions for 8x MSAA
Taken from the intel driver. The sample positions are actually a solution to the 8 queens puzzle. It gives more accurate and smoother AA.
r600g: implement texturing with 8x MSAA compressed surfaces for Evergreen
The 2x and 4x MSAA cases are completely broken. The lfdptr instruction returns garbage there.
The 8x MSAA case is broken on Cayman, though at least the result looks somewhat correct.
Only the 8x MSAA case works on Evergreen and is enabled.