dhewm3 VS DOOM-3-BFG-VR

The installation is different from what you might be used to from your typical mod. Download dhewm3_1.5.2_win32.zip from the githup page, unzip it, then copy, as instructed by the WHAT_TO_DO.txt files in the base and d3xp directories of the unzipped mod the .pk4 files from the game directory over (d3xp is only there if you installed the Resurrection of Evil add-on first). You can then uninstall the game from Steam.

I played through it with dhewm3 recently. Really enjoyed it.

There is a source port of Doom 3 if you want to play it on Linux or macOS.

if you are going to play it on PC, then get the original 2004 release, with the dhewm3 source port since it can get to widescreen easily and is friendlier on modern devices.

Why do you want to run old, buggy code through wine when you could use native dhewm3 to play the original (non-BFG) version of doom3 with Bugfixes, OpenAL audio and proper widescreen support? https://dhewm3.org/

for me go for the original Doom 3 + dhewm3 source port since the source port can get to widescreen easily and is friendlier on modern devices. BFG Edition aint that bad but its very easy and lacking other content that the original Doom 3 had (especially ROE) and it has less enemy count.

Doom 3 BFG VR mod (Fully Possessed)

Talking about this mod: https://github.com/NPi2Loup/DOOM-3-BFG-VR/releases

This is great for those wanting to play Doom 3 in VR! Before, you had to consider what version of Doom 3 for PC you had to buy based on your preferred VR platform with the Oculus Quest port requiring files from the original version while the PCVR mod uses the BFG Edition.

The Doom 3 code you linked is ancient, the most updated branch is here: https://github.com/NPi2Loup/DOOM-3-BFG-VR/releases

Personally I think Doom 3 (https://github.com/NPi2Loup/DOOM-3-BFG-VR/releases) is the best VR modification yet and Half-Life 2 VR also looks promising (https://www.youtube.com/watch?v=Uy0Z4GnDdus).