GTA IV with DXVK: the sourced setup

Before you start: which GTA IV do you have?

The Complete Edition and older versions (1.0.7.0 and 1.0.8.0, used for some mods) keep different files, and mod support differs by version; the FusionFix project lists the versions it supports, so read its page rather than relying on us. Right-click GTAIV.exe, Properties, Details shows the file version. We did not test any edition.

Install DXVK for Grand Theft Auto IV

To undo it, delete the DLL: see the uninstall guide. The general steps, with the checklist and warnings, are on the Windows install page.

What DXVK already does for this game

The profile lists GTAIV.exe and EFLC.exe (Episodes from Liberty City). The options are DXVK’s own: it reports no more than 128 MB of video memory to the game, hides an NVIDIA GPU from the Direct3D 9 path, turns off DF texture formats and loses the device when the window loses focus. We have not tested what each does in the game.

DXVK applies these automatically when it recognises the exe name, so you do not need to copy them into a dxvk.conf. The release notes of DXVK 1.7, 1.9.1, 1.10, 2.0, 3.0 and 3.0.1 name this game among their fixes.

Mods

FusionFix, ZolikaPatch, ENB and ReShade often use file names such as d3d9.dll, dinput8.dll or vorbisFile.dll in the game folder. DXVK’s d3d9.dll would replace a file of the same name. Put the game folder into the Game Checker’s folder mode: it flags a conflicting d3d9.dll before you copy anything. See the conflicts page.

What we have not tested

• Any run of the game: FPS, stutter and crashes are unmeasured, so we make no speed claim.
• Whether DXVK is better or worse than the game’s normal Direct3D on your GPU.
• Mods and fixes: FusionFix, ZolikaPatch, ENB and ReShade setups, and the community advice that FusionFix can load DXVK from a file named vulkan.dll. We could not verify that claim (the FusionFix README was not reachable from our environment), so we do not give it as an instruction
• Whether the game’s online features still exist.

Check your own copy

The Game Checker reads your .exe on your device and tells you its bitness and Direct3D version. Our checker also flags files in the game folder that use the same name as DXVK’s DLLs.