[Bug 43239] New: The Witcher 3: ground is too dark in some areas

https://bugs.winehq.org/show_bug.cgi?id=43239

Bug ID: 43239
           Summary: The Witcher 3: ground is too dark in some areas
           Product: Wine
           Version: 2.11
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: directx-d3d
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 58545
  --> https://bugs.winehq.org/attachment.cgi?id=58545
The Witcher 3: dark ground

In Velen area in the game, the ground looks too dark (almost black) which
contrasts it strongly with brighter vegetation. It looks like some lighting
issue.

See attached screenshot.

Note: sample_c_lz hack is applied, but it appears without it too.

Game version: GOG, 1.31.
System: Debian testing, x86_64.
OpenGL renderer string: AMD Radeon RX 480 Graphics (AMD POLARIS10 / DRM 3.10.0
/ 4.11.0-1-amd64, LLVM 4.0.1)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 17.2.0-devel
(git-f7f2fa8eb1)
Resolution: 1920x1200.
Settings: Max settings for all graphics (ambient occlusion: HBAO+), Nvidia
hairworks is off.