Incorrect shading on some 3D objects in UFO: Extraterrestrials

[Snack555]

Some 3D objects in the game UFO: Extraterrestrials appear very dark. The easiest way to test this is to take the tank unit on your missions as it's always rendered like this. It used to work correctly on DXVK 2.3.1 but DXVK 2.4 and 2.4.1 have this problem. I have attached a comparison screenshot below of different DXVK versions and WINED3D.

Software information

Game: UFO: Extraterrestrials (DVD edition, patch 2 applied, but still happens without the patch)
No graphical settings changed and they do not seem to have an effect on this if changed

System information

• GPU: AMD R9 Nano
• Driver: Mesa 24.1.7
• Wine version: 9.17
• DXVK version: 2.4.1

Apitrace file(s)

https://mega.nz/file/2d12kLDa#sQb5k1HofKW9Ft4yRuQ1NBM_vkoA_O8__VGsgYpvORM

Log files

UFO_ET WINE.log

[Blisto91]

Thank you for the well made issue.

I have been unable to bisect the specific commit it regresses with in the 2.4 release as a lot of the commits in between it and 2.3.1 just show the game as black in the trace.