Axel Davy and Patrick Rudolph landed nearly 50 patches today into Mesa Git master for improving this D3D9 state tracker. This work is landing just in time for the Mesa 11.2 branching later this month.
The "st/nine" work includes a number of fixes, a render state validation layer, window occlusion handling, support for more formats, and a variety of other changes.
Gallium3D Nine with Wine users can learn more via the Mesa Git log. This is the first Nine state tracker focused improvements in more than five months.