The forum

A new D3D9 state tracker for Mesa/Gallium is here and it is stable, plus a Wine patch:

http://www.phoronix.com/scan.php?page=news_item&px=MTQxMjk
https://github.com/chrisbmr/Mesa-3D/tree/gallium-nine
https://github.com/chrisbmr/wine/tree/d3dadapter9-wip

R600g driver is almost as fast as AMD Catalyst, even without the new back-end:
http://www.phoronix.com/vr.php?view=19048

Nouveau for Nvidia at least for GTX300 and before, is also in a good state. Intel's to.

It will be good to have a D3D state tracker installation from PlayOnLinux, plus a patched Wine with other patches to (like awesomium).

I believe these things will be in fast development state inside 2013. Intel and Mesa people have decided for an OpenGL version release every 3 months instead of 6, and also to update Mesa version releases every 15 days.