Ace Combat 04 PC Port 2.2.3

Ace Combat 04 PC Port 2.2.3 Beta

This public beta fixes startup on PCs where the game window appeared and then
vanished while the game kept running in the background, seen on a laptop with
AMD graphics. Download Ace-Combat-04-PC-Port-2.2.3-beta-Setup.exe and select
your unmodified USA ISO (SLUS-20152). Setup verifies the executable inside the
disc, creates the game folder, imports the ISO and local memory image, and offers
a desktop shortcut. No ISO or extracted game assets are included in the download.

Requirements and installation

• Windows 10/11 x64, .NET Framework 4.8 and a Vulkan 1.3 GPU/driver.
• Your own uncompressed USA ISO and about 4 GB of free disk space.
• An empty destination folder. The default is under your user's Local AppData
  folder; administrator access and build tools are not required.
• Leave Create a desktop shortcut selected to add the game to your desktop.
  Start it through that shortcut or Ace Combat 04.exe in the game folder.
• For an update, install into a new folder and copy your existing saves/ folder.

The installer is unsigned. SHA256SUMS.txt identifies the exact uploaded build;
it does not provide a publisher signature.

Changes since 2.2.2 Beta

• On PCs with two GPUs (such as laptops), the game now checks each GPU and uses
  one that can actually run it and draw to the window, instead of giving up when
  the preferred one cannot
  (#6).
  The log lists every GPU and why any was skipped.
• If the graphics still cannot start, the game shows an error message and closes,
  instead of running invisibly in the background with sound.

Earlier in 2.2.2 Beta

• Anisotropic filtering fixes
  (#4) and
  no more per-frame swapchain rebuilds, a likely cause of stutter on AMD
  (#5).

Included fixes and defaults

• AC4 widescreen camera and configurable HUD placement, with target diamonds
  aligned to their target boxes.
• Corrected hangar selection guides, objectives-screen scan clipping and
  downward chase-view framebuffer effects.
• Startup audio staging-buffer fix, confirmed in normal play.
• High/3x rendering, UI smoothing and FXAA enabled; original game textures.
• ISAF application icon, bundled shaders/DLLs, and project/third-party licenses.
• AC4 mod API naming with legacy compatibility aliases.

Validation and coverage

Tests reject incorrect/modified disc executables, compare the generated memory
image with the recompiler's output, verify an exact ISO copy and shortcut target,
and exercise cancellation cleanup and protection of existing folders. The
installed runtime passes a 180-field ISO startup smoke test without using the
development data directory. Widescreen, audio and patch regression checks pass.

Mission 01 has been completed in live play. The full campaign is not yet
validated, so this release is marked as a beta/prerelease. F4 opens settings.
For a report, run DIAGNOSTICS.bat and provide the log, mission, camera and settings.

Ace Combat 04 PC Port 2.2.2

Ace Combat 04 PC Port 2.2.2 Beta

This public beta fixes graphical problems with anisotropic filtering and a likely
cause of picture and audio stutter, both reported on AMD graphics cards. Download
Ace-Combat-04-PC-Port-2.2.2-beta-Setup.exe and select your unmodified USA ISO
(SLUS-20152). Setup verifies the executable inside the disc, creates the game
folder, imports the ISO and local memory image, and offers a desktop shortcut.
No ISO or extracted game assets are included in the download.

Requirements and installation

• Windows 10/11 x64, .NET Framework 4.8 and a Vulkan 1.3 GPU/driver.
• Your own uncompressed USA ISO and about 4 GB of free disk space.
• An empty destination folder. The default is under your user's Local AppData
  folder; administrator access and build tools are not required.
• Leave Create a desktop shortcut selected to add the game to your desktop.
  Start it through that shortcut or Ace Combat 04.exe in the game folder.
• For an update, install into a new folder and copy your existing saves/ folder.

The installer is unsigned. SHA256SUMS.txt identifies the exact uploaded build;
it does not provide a publisher signature.

Changes since 2.2.1 Beta

• Anisotropic filtering no longer garbles or smears textures on some GPUs
  (#4). The
  final picture is no longer anisotropically filtered. With the setting off, the
  picture is unchanged.
• The display swapchain is rebuilt only when the window size changes. Drivers that
  report it as suboptimal on every frame no longer stall the game each frame, a
  likely cause of picture and audio stutter on AMD
  (#5).
  Rebuilds are now recorded in the log.
• Both fixes were tested on an NVIDIA GPU; confirmation on AMD hardware is pending.

Included fixes and defaults

• AC4 widescreen camera and configurable HUD placement, with target diamonds
  aligned to their target boxes.
• Corrected hangar selection guides, objectives-screen scan clipping and
  downward chase-view framebuffer effects.
• Startup audio staging-buffer fix, confirmed in normal play.
• High/3x rendering, UI smoothing and FXAA enabled; original game textures.
• ISAF application icon, bundled shaders/DLLs, and project/third-party licenses.
• AC4 mod API naming with legacy compatibility aliases.

Validation and coverage

Tests reject incorrect/modified disc executables, compare the generated memory
image with the recompiler's output, verify an exact ISO copy and shortcut target,
and exercise cancellation cleanup and protection of existing folders. The
installed runtime passes a 180-field ISO startup smoke test without using the
development data directory. Widescreen, audio and patch regression checks pass.

Mission 01 has been completed in live play. The full campaign is not yet
validated, so this release is marked as a beta/prerelease. F4 opens settings.
For a report, run DIAGNOSTICS.bat and provide the log, mission, camera and settings.

Ace Combat 04 PC Port 2.2.1

Ace Combat 04 PC Port 2.2.1

This release refreshes the Windows installer from main, with the EXE
launcher used throughout player packages and updated documentation. Download
Ace-Combat-04-PC-Port-2.2.1-beta-Setup.exe and select your unmodified USA ISO
(SLUS-20152). Setup verifies the executable inside the disc, creates the game
folder, imports the ISO and local memory image, and offers a desktop shortcut.
No ISO or extracted game assets are included in the download.

Requirements and installation

• Windows 10/11 x64, .NET Framework 4.8 and a Vulkan 1.3 GPU/driver.
• Your own uncompressed USA ISO and about 4 GB of free disk space.
• An empty destination folder. The default is under your user's Local AppData
  folder; administrator access and build tools are not required.
• Leave Create a desktop shortcut selected to add the game to your desktop.
  Start it through that shortcut or Ace Combat 04.exe in the game folder.
• For an update, install into a new folder and copy your existing saves/ folder.

The installer is unsigned. SHA256SUMS.txt identifies the exact uploaded build;
it does not provide a publisher signature.

Changes since 2.2.0 Beta

• Player packages use Ace Combat 04.exe as the launcher.
• Added source visual regression checks, frame-timing analysis and opt-in runtime
  profiling tools for development; no performance gain is claimed by this release.
• Updated contribution/support guidance, compatibility coverage and source-only CI.

Included fixes and defaults

• AC4 widescreen camera and configurable HUD placement, with target diamonds
  aligned to their target boxes.
• Corrected hangar selection guides, objectives-screen scan clipping and
  downward chase-view framebuffer effects.
• Startup audio staging-buffer fix, confirmed in normal play.
• High/3x rendering, UI smoothing and FXAA enabled; original game textures.
• ISAF application icon, bundled shaders/DLLs, and project/third-party licenses.
• AC4 mod API naming with legacy compatibility aliases.

Validation and coverage

Tests reject incorrect/modified disc executables, compare the generated memory
image with the recompiler's output, verify an exact ISO copy and shortcut target,
and exercise cancellation cleanup and protection of existing folders. The
installed runtime passes a 180-field ISO startup smoke test without using the
development data directory. Widescreen, audio and patch regression checks pass.

Mission 01 has been completed in live play. The full campaign is not yet
validated. F4 opens settings.
For a report, run DIAGNOSTICS.bat and provide the log, mission, camera and settings.

Ace Combat 04 PC Port 2.2.0 Beta

Ace Combat 04 PC Port 2.2.0 Beta

This release adds a Windows installer for the current AC4 port. Download
Ace-Combat-04-PC-Port-2.2.0-beta-Setup.exe and select your unmodified USA ISO
(SLUS-20152). Setup verifies the executable inside the disc, creates the game
folder, imports the ISO and local memory image, and offers a desktop shortcut.
No ISO or extracted game assets are included in the download.

Requirements and installation

• Windows 10/11 x64, .NET Framework 4.8 and a Vulkan 1.3 GPU/driver.
• Your own uncompressed USA ISO and about 4 GB of free disk space.
• An empty destination folder. The default is under your user's Local AppData
  folder; administrator access and build tools are not required.
• Leave Create a desktop shortcut selected to add the game to your desktop.
  Start it through that shortcut or Ace Combat 04.exe in the game folder.
• For an update, install into a new folder and copy your existing saves/ folder.

The installer is unsigned. SHA256SUMS.txt identifies the exact uploaded build;
it does not provide a publisher signature.

Included fixes and defaults

• AC4 widescreen camera and configurable HUD placement, with target diamonds
  aligned to their target boxes.
• Corrected hangar selection guides, objectives-screen scan clipping and
  downward chase-view framebuffer effects.
• Startup audio staging-buffer fix, confirmed in normal play.
• High/3x rendering, UI smoothing and FXAA enabled; original game textures.
• ISAF application icon, bundled shaders/DLLs, and project/third-party licenses.
• AC4 mod API naming with legacy compatibility aliases.

Validation and coverage

Tests reject incorrect/modified disc executables, compare the generated memory
image with the recompiler's output, verify an exact ISO copy and shortcut target,
and exercise cancellation cleanup and protection of existing folders. The
installed runtime passes a 180-field ISO startup smoke test without using the
development data directory. Widescreen, audio and patch regression checks pass.

Mission 01 has been completed in live play. The full campaign is not yet
validated, so this release is marked as a beta/prerelease. F4 opens settings.
For a report, run DIAGNOSTICS.bat and provide the log, mission, camera and settings.