[Wine] Unable to launch any game, weird assertion

[qdii]

Hello,
I'm on Gentoo 64 bits, using wine-1.1.32 within a 32-bit chrooted environment.
I tried and install Half-life 2 deathmatch from Steam, and Command and Conquer 3 Tiberium Wars.
At launch, both game crashed with that error : 

brw_eu_emit.c:59: brw_set_dest: Assertion `dest.nr < 128' failed.

Any idea why ?

# why 32-bit chrooted environment ?
The reason why I'm using a 32-bit chrooted environment is here : wine uses 32-bit library. Within the normal environment, it has to use the 32-bit emulated libraries, but in Gentoo, these libraries don't use the hardware acceleration (they just render the scene with software computation) resulting in really slow game performance