KisakCOD VR v0.10.0-beta.2 — Smoother Frames, Stable Horizon and Audio Fix

KisakCOD VR v0.10.0-beta.2 is a frame-pacing, comfort, audio, and controls update over v0.10.0-beta.1.

Highlights

• Substantially smoother fresh-frame delivery with much less head-turn jitter.
• Fixed scratchy, metallic, or corrupted looping audio, including the Airlift helicopter sequence.
• Stabilized the horizon during sprinting, rappelling, and scripted camera movement.
• Added right-stick up for jump/stand and right-stick down for crouch.
• Preserved horizontal 45-degree snap turning and right-stick-click melee.
• Added a supported lower-performance render preset.
• Retains beta.1's tracked left hand and physical magazine reloading.

Frame pacing and VR rendering

The capture bridge now associates each stereo image with the exact OpenXR pose used to render it. Completed captures are consumed in order through a four-slot queue rather than alternating between reused frames and discarded fresh frames.

This substantially reduces consumer skips, reused-frame streaks, pose mismatch, and the visible jitter caused by the old producer/consumer phase race. Occasional hardware- or runtime-dependent judder may still occur because this remains a beta.

The incompatible 3072x1536 packed mode is no longer recommended. Supported presets are:

• 6016x2688 with output scale 1.0
• 4768x2016 with output scale 0.75

Camera comfort

The game-authored VR camera base is now reduced to yaw before physical HMD motion is applied. This prevents COD4's sprint, rappel, and scripted camera pitch/roll from banking the entire world while preserving physical head pitch, yaw, roll, and translation.

Audio correction

COD4 normally performs one renderer sound update per game view. The VR renderer creates left-eye, right-eye, and sometimes scope views, which caused the full update to run two or three times in one game frame.

It now runs only for the first VR view. Additional eye and scope views skip the duplicate update, preventing long looping sounds from being repeatedly disturbed or audibly corrupted.

Updated controls

• Move: left thumbstick
• Snap turn: right thumbstick left/right
• Jump or stand: right thumbstick up; left index trigger also remains available
• Crouch: right thumbstick down; right B tap also remains available
• Prone: hold right B
• Melee: click right thumbstick
• Fire: right index trigger
• Use: left X
• Sprint: click left thumbstick
• Magazine eject or native reload: right A
• Rifle grenade and night vision: right-thumbrest plus left-stick directional modifier

Vertical stick gestures trigger once and must return near neutral before they can trigger again. Vertically dominant input is required, so they do not interfere with horizontal snap turning.

Existing tracked-hand and reloading features

The tracked left hand and physical manual magazine reload introduced in beta.1 remain included. For supported detachable-magazine rifles, SMGs, and pistols:

1. Press right A to eject the current magazine.
2. Move the left controller to the left hip and hold the left grip.
3. Move the magazine to the weapon.
4. Release the grip inside the magazine well.

Unsupported weapon types retain COD4's native right-A reload behavior.

Installation

1. Install and launch the original 2007 Call of Duty 4: Modern Warfare once.
2. Open the folder containing iw3sp.exe.
3. Extract KisakCOD-VR-v0.10.0-beta.2.zip directly into that folder and allow it to replace the previous mod files.
4. Start the desired OpenXR runtime.
5. Run Launch-KisakCOD-VR.bat.

The package contains no COD4 maps, fastfiles, saves, original executables, or other game data. A legitimate copy of the original game is required.

Tested configuration

• Meta Quest 3
• Virtual Desktop OpenXR runtime
• NVIDIA RTX 3080 Ti

Other headsets, controller profiles, GPUs, and OpenXR runtimes remain experimental.

Known limitations

• Death From Above is not supported. Open the console and enter /spmap bog_b to continue with War Pig.
• Physical scope placement may need headset-specific calibration in VR-Settings.bat.
• Some runtime- or performance-dependent judder may remain.
• Mission-specific weapon, scripting, save, or checkpoint problems should be reported with the mission, checkpoint, headset/runtime, and relevant main/console.log lines.

Source and bug reports

• Source tag: https://github.com/jplakon/CallOfDuty4_VR/tree/v0.10.0-beta.2
• Changes since beta.1: v0.10.0-beta.1...v0.10.0-beta.2
• Issues: https://github.com/jplakon/CallOfDuty4_VR/issues
• Patreon: https://www.patreon.com/c/J_Play

The attached .sha256 file verifies the Windows package.

KisakCOD VR v0.10.0-beta.1 - Tracked Hands and Manual Reloading

Matching-runtime clean-install fix

The Windows ZIP now includes the exact 32-bit Steamworks, Bink, and Miles runtime files used by KisakCOD. This fixes clean-install steam_api.dll failures and the _AIL_sample_stage_property@28 entry-point error caused by an incompatible retail mss32.dll.

Clean-install packaging fix

The Windows ZIP now includes the required steam_api.dll. A clean extraction into an original COD4 installation no longer requires files from an older KisakCOD VR update.

Tracked hands and physical manual reloading

This beta adds a palm-aligned tracked left hand and physical detachable-magazine reloading for supported rifles, SMGs, and pistols.

Added

• Palm-aligned controller-tracked left hand
• Free-hand, rifle-support, and magazine-grip poses
• Physical magazine ejection, left-hip draw, insertion, rotation, and dropping
• Two-bone shoulder and elbow placement
• OpenXR palm-pose support with grip-pose fallback
• Settings for disabling tracked hands or physical reloading
• Removed the colored controller-axis diagnostic overlay

Complete Meta Quest Touch controls

This is the primary tested control map. Other OpenXR controller profiles remain experimental.

Action	Control
Look and physically turn	Move the headset or turn your body
Move	Left thumbstick; movement follows HMD direction
Snap turn	Right thumbstick left/right; 45-degree turns
Aim weapon	Point the right controller
Fire	Right index trigger
Two-hand rifle support	Hold the left grip near the weapon’s fore-end
Aim down sights / use scope	Hold the left grip and physically shoulder the weapon near the headset sight line
Jump	Left index trigger
Use / interact / pick up	Left X
Eject magazine or reload	Right A
Sprint	Click and hold the left thumbstick while moving
Crouch	Tap right B
Prone	Hold right B
Melee	Click the right thumbstick
Next weapon	Tap left Y
Frag grenade	Hold left Y for at least 0.3 seconds, then release to throw
Flashbang / tactical grenade	Right grip
Night vision	Right thumbstick down
Rifle grenade launcher / weapon slot 5	Right thumbstick up
Pause / open menu	Left controller menu button

Physical magazine reloading

For supported detachable-magazine rifles, SMGs, and pistols:

1. Press right A to eject the current magazine.
2. Move the left controller to your left hip.
3. Squeeze and hold the left grip to draw a fresh magazine.
4. Carry the magazine to the weapon while continuing to hold the grip.
5. Release inside the magazine well to insert it.
6. Releasing away from the magazine well drops the magazine.

Shotguns, launchers, bolt-action rifles, belt-fed weapons, and weapons without a usable detachable magazine use right A for COD4’s original reload behavior.

Physical reloading can be disabled by setting KISAK_VR_MANUAL_RELOAD=0 in VR-Settings.bat.

Mission-action shortcuts

Touch and hold the right controller’s thumbrest sensor while moving the left thumbstick. Normal movement is suspended while the modifier is active.

Modified input	Action
Right thumbrest + left stick up	Rifle grenade launcher / weapon slot 5
Right thumbrest + left stick down	Night vision
Right thumbrest + left stick left	Airstrike / mission action slot 6
Right thumbrest + left stick right	C4 / mission action slot 7

Menus

Action	Control
Move virtual cursor	Left thumbstick
Confirm / select	Right A
Back	Right B
Open or close pause menu	Left controller menu button

Right A therefore reloads during gameplay but remains the confirm button while a menu is open.

Special weapons and mission sequences

• Javelin and Stinger: Aim with the right controller, hold the left grip, bring the weapon into the eye-level aiming pose, wait for target lock, and fire with the right trigger.
• Mounted and vehicle weapons: Aim with the right controller and fire with the right trigger.
• Fixed scoped rifles/turrets: Aim with the headset, use the left thumbstick vertically to adjust zoom, and fire with the right trigger.

Known limitations

• Death From Above remains unsupported and must be skipped.
• Continuous touch-driven finger curling is not implemented; the hand uses authored free, rifle-grip, and magazine-grip poses.
• Meta Quest 3 with Virtual Desktop OpenXR is the primary tested configuration. Other OpenXR headsets, runtimes, and controller profiles are experimental.

KisakCOD VR v0.9.0-beta.1 — First Public Beta

The first public beta of KisakCOD VR is now available.

KisakCOD VR converts the original 2007 Windows release of Call of Duty 4: Modern Warfare into a single-player OpenXR VR experience.

Features

• Stereoscopic OpenXR rendering
• 6DoF headset tracking
• Motion-controller weapon aiming
• Physical sniper scopes
• VR-positioned HUD elements
• Campaign-specific VR compatibility fixes
• New Game begins with Crew Expendable because the F.N.G. training mission performs poorly in VR

Current status

The campaign is playable from Crew Expendable through the ending when Death From Above is skipped. Death From Above is not supported in this beta.

The primary tested configuration is:

• Meta Quest 3
• Virtual Desktop OpenXR runtime
• NVIDIA RTX 3080 Ti

Other OpenXR headsets, controllers, GPUs, and runtimes are experimental. Reports from those configurations are especially welcome.

Installation

1. Install and launch the original 2007 Call of Duty 4 once.
2. Open its installation folder—the folder containing iw3sp.exe.
3. Extract the contents of KisakCOD-VR-v0.9.0-beta.1.zip directly into that folder.
4. Start your OpenXR runtime.
5. Run Launch-KisakCOD-VR.bat.

Read INSTALL.md, CONTROLS.md, and KNOWN-ISSUES.md before playing.

This package contains no Call of Duty maps, fastfiles, executables, or other game data. A legitimate installation of the original game is required.

If Windows warns about the unsigned executable, verify the supplied SHA-256 checksum. Please report reproducible bugs through GitHub Issues with your headset, OpenXR runtime, GPU, mission, checkpoint, and relevant main/console.log lines.