What works
With pure D3D (no HW T&L): Almost perfect – minor glitches (some time, road fragments disappear, textures of destroyed buildings are... hmm hard to describe... they are moving with the camera(need to confirm that this does not happens on Windows too, sometime sounds are a bit noisy(however this also happens on Windows with certain cards and settings – so this may not be wine specific bug) however you will need rather powerful PC to play it. On my C2D E7200, GeForce9800GT and 4GB RAM I had to set Terrain Detail to lowest settings (it seams this setting only change bumpiness of map – it does not lower texture quality – it is really hard to spot a difference, except HUGE speed jump). With 1280x1024x24, NO AA , 8X AF and all other – in game – settings set to full AND visibility range set to 2500 meters, average frame rate was about 30-45, with a lot of action on screen, it slowed down to about 20 FPS – very playable. No other glitches were detected. NOTE: Without HW T&L, speed of Flashpoint is very similar in both windows and Linux – it is slow on both systems. (Still playable). With D3D HW T&L: A lot more glitches, shadows flicker continuously and roads disappears MUCH more often. Performance is much better, you can safely set terrain detail to normal or even high with no slowdowns at all (well almost), however speed tends to jump – especially while turning around and while switching from map to action – it is irritating, also performance in some places on map is much worse then in Windows.

What does not
See above.

What was not tested
See "Extra comments".

Additional Comments

I passed about 80% of 1985 campaign plus some home brew missions with many many MANY units on all sides – no crashes, only glitches mentioned above. NOTE: I played without HW T&L. I would rate it gold but HW T&L D3D still needs a lot of work. Silver for now.

NOTE:
Cedega worked better with most standard missions (and HW T&L is working perfectly in Cedega), however it started crashing with many units on screen – wine did not :). CodeWavers – please fix HW T&L in this game and I'm buying Crossover Games today :)