[Bug 45278] New: Vietcong: invisible objects (staging 3.9)

https://bugs.winehq.org/show_bug.cgi?id=45278

Bug ID: 45278
           Summary: Vietcong: invisible objects (staging 3.9)
           Product: Wine-staging
           Version: 3.9
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail], [e-mail]
      Distribution: ArchLinux

Created attachment 61538
  --> https://bugs.winehq.org/attachment.cgi?id=61538
Wine staging 3.9 rendering issues in Vietcong

Wine-staging 3.9 has an issue with rendering objects in Vietcong - some parts
of soldier models are invisible (see attachment).

This problem does not exist in Wine-testing and all other Wine-staging versions
(so its only Wine-staging 3.9 issue).

Reproducible in Vietcong full [1] and demo [2] versions. See notes in AppDB how
to run the game.

Tested SW
Kernel 4.16.11
Mesa 18.0.4

Tested HW
Processor: Intel(R) Core(TM) i5-4210M CPU @ 2.60GHz
GPU 1: Intel HD Graphics 4600
GPU 2: AMD Radeon R7 M265

PS: Different Vietcong rendering bug occured also in Wine-staging 3.3, but it
has been fixed: bug #44712
PPS: Also note that some missions will crash without stagged
"wined3d-Indexed_Vertex_Blending" patch, see bug #39057 or #9337

[1] https://appdb.winehq.org/objectManager.php?sClass=version&iId=8864
[2] https://appdb.winehq.org/objectManager.php?sClass=version&iId=35621