[Bug 10636] simcity 4 3D objects become invisible

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=10636


Pierre Willenbrock <pierre at pirsoft.de> changed:

           What    |Removed                     |Added
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                 CC|                            |pierre at pirsoft.de




--- Comment #21 from Pierre Willenbrock <pierre at pirsoft.de>  2009-05-26 08:52:34 ---
This is probably the same z-buffer issue described in the comments of bug
#7260. With glxsnoop(available in the progs/xdemos directory of mesa), one can
see that the tiles(that is, everything that is static) only sometimes get drawn
to the z-buffer, while the moving parts(cars, sims, ...) are always drawn to
the z-buffer. The z-buffer is only cleared if the game rerenders tiles. 

So, i guess Sim city 4 tries to render the tiles without the depth-test, but
still rendering to the z-buffer. This would be accomplished by using
glDepthFunc(GL_ALWAYS), but instead it seems like glDisable(GL_DEPTH_TEST) is
in effect.

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