[Bug 27145] Weapons Translucent Like Glass in FEAR 1 and 2.

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=27145

--- Comment #68 from Stefan Dösinger <stefan at codeweavers.com> ---
Prior to version 1.3.20 we misinterpreted the polygon offset and that caused
problems in games like Mass Effect 2 (flickering decals). FEAR sets an insanely
large polygon offset (Half the Z buffer range), and the offset pulls the
geometry in front of the camera. That's not supposed to matter because polygon
offset is applied after Z clipping. On Nvidia that's not the case, so the
geometry gets clipped away. The difference is demonstrated by attachment 37930.

It's interesting but not totally surprising that Nouveau is affected as well. I
guess the polygon offset vs Z clipping behavior is due to the hardware design
and not a simple driver bug.

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