http://bugs.winehq.org/show_bug.cgi?id=28347
--- Comment #18 from Alexey Loukianov mooroon2@mail.ru 2011-10-13 15:00:34 CDT --- Henri, I've got a small update on the topic.
First of all, today I had changed the GPU in my home workstation, now it's GeForce GTX 550 Ti 1Gb instead of GeForce GTS 250 1Gb. I know that GTX 550 Ti despite being more modern than GTS 250 isn't much faster. Right after GPU change I spent some time re-testing FPS issues this bug is about. Looks like that on the GTX 550 Ti FPS with orm=bb is even worse than it was on the GTS 250. With Wine 1.3.28 + GTX 550 Ti I've got ~15-19 FPS when looking at the core which is 1.5 times lower than it was with 1.3.28 + GTS 250. Also I had timedemo'ed demos I had attached here, results with GTX 550 Ti are:
Wine 1.3.4 162 FPS for "not looking at core" 39 FPS for "looking at core"
Wine 1.3.28 63 FPS for "not looking at core" 15(!) FPS for "looking at code"
Second thing I want to bring your attention to is that it looks like some surfaces/shaders are broken with orm=bb + latest official nVIDIA driver 285.05.09. Examples are street screens like one with Dr.Kleiner on ep1_background02 map (open the console while in main menu and use "map_background ep1_background02" command to load this map) and the screen that was causing all the troubles fixed in bug #13313. I had tried to downgrade drivers to 280.13 and it seems to fix this render bug. Don't know if this bug belongs to Wine or to nVIDIA drivers, so it would be cool it you would find some time to look into this prior I submit another bug report.