ac7ultrawide

Runtime ultrawide fix for ACE COMBAT 7: SKIES UNKNOWN (PC / Steam).

Loaded automatically at game startup via Ultimate ASI Loader. No permanent changes are made to the game executable.

What it does

Patch	Description
Black bar removal	Disables the letterbox that the game forces on ultrawide resolutions
FOV fix	Widens the horizontal field of view to match your aspect ratio, preserving the original vertical FOV
HUD shift	Updates Mods/hudtextfix.ini with the correct shift constant so HUD elements stay centred

Patches 1 and 2 work by scanning the game's in-memory image and writing a small number of bytes at runtime. The game executable is never modified on disk.

Requirements

• ACE COMBAT 7: SKIES UNKNOWN (Steam, original/unpatched Ace7Game.exe)
• Ultimate ASI Loader — place version.dll in the game root
• For the HUD patch: hudtextfix (Nexus Mods) installed under Mods/hudtextfix.ini

Installation

1. Build the project (see below), or download a pre-built release.
2. Copy ac7ultrawide.asi to your game root (next to Ace7Game.exe).
3. Ensure version.dll (Ultimate ASI Loader) is also in the game root.
4. Launch the game normally. A log file ac7ultrawide.log will be written to the game root on each run.

Building

Rust (recommended)

cd ac7ultrawide-rs
build.bat

Requires the MSVC toolchain and cargo. The .cargo/config.toml sets the target to x86_64-pc-windows-msvc. The output DLL is at target/x86_64-pc-windows-msvc/release/ac7ultrawide.dll — rename it to ac7ultrawide.asi.

C++

cmake -B build -A x64
cmake --build build --config Release

Requires CMake 3.20+ and MSVC. The output is build/Release/ac7ultrawide.asi.

Optionally, pass -DGAME_DIR="..." to have CMake copy the .asi directly into the game folder after each build:

cmake -B build -A x64 -DGAME_DIR="C:/SteamLibrary/steamapps/common/ACE COMBAT 7"

Notes

• The game uses Steam DRM which encrypts the .text section on disk. The ASI waits 500 ms after load and retries the black bar pattern scan up to 10 times (at 200 ms intervals) to give the DRM stub time to finish decrypting memory.
• If you previously used magic.py to patch the exe on disk, restore Ace7Game.exe from its .bak backup before using this ASI.
• The FOV fix is only applied when your aspect ratio is wider than 16:9.