Systems / PC

CoD1-Reissued

Call of Duty (2003)

Status

In game

Platforms

Linux x86-64; macOS on Apple Silicon (training played by hand)

Game release

Steam (app 2620), v1.5b, single player

Repository

JTM-rootstorm/CoD1-Reissued

SwARc

platforms/win32 (commits)

Updated

2026-11-09

A native port of Call of Duty’s single player. Goals beyond running natively: widescreen at any resolution with a UI and HUD that scale properly, Hor+ field of view, and high refresh rates without the Quake 3 engine family’s frame-rate-dependent physics.

Status

The game’s five modules (CoDSP.exe, gamex86.dll, cgamex86.dll, uix86.dll and EaxMan.dll) are lifted and linked into one native program. It boots through the intro cinematics to the main menu with its music, starts a new game through the briefing, and the training level plays through to completion (played by hand). EAX 3 works through the game’s own EAX Manager on SwARc’s providers.

macOS

Builds and runs on Apple Silicon (tested on an M3 Pro, macOS 27) with SDL_GPU on Metal, and passes its tests. Scripted runs play the intro and reach the training level at 60 fps (vsync, also fullscreen on a 5K display). The training level has been played by hand on the Mac through the obstacle course: the signs, the squad’s run, the fences, crawling under the wire and the machine-gun section, the TAB objectives, with EAX 3 and with Miles. Not yet played to the end of training or past it on the Mac.

Native replacements

Each replaces lifted functions and is checked bit for bit against the lifted original by the project’s tests.

• Widescreen and frame rate: any resolution, borderless or exclusive fullscreen, Hor+ FOV (cg_fov is the 4:3 horizontal FOV), and an exact com_maxfps that sleeps instead of spinning.
• HUD on wide screens: elements anchored to the edges keep their shapes; menus, briefings and cinematics stay 4:3.
• Player movement: footsteps at any step length, pmove_fixed without rounding.
• Collision traces, once about 45% of the main thread in training.
• Renderer hot path: culling, sky clipping, texture coordinate generation and the draw surface sort; lifted renderer code on the main thread went from 12.9% to 4.5%.
• Renderer back end, all of it: the GL state, the stages and every stage iterator, the dlight and shadow passes, the vertex deforms, the colour, alpha and texture coordinate generators, every surface type, the sky, flares, portals, the 2D commands and the command loop. Its GL calls go straight to SwARc’s GL state, and its vertex array draws to the graphics device, no longer through the reimplemented opengl32. Each piece is also checked against the lifted original over 200,000 random cases and against planted bugs the tests must catch, which covers the paths the training level never reaches.
• XAnim evaluation and updates.
• Files: the pk3 directory scan, zlib and the JPEG inverse DCT on the host.
• CPU skinning and a cinematic fix.

Next

The renderer’s front end, natively from the bottom up: the view and its projection, the draw surface list, the world’s cells and static models, the cell walk through portals, and the scene’s entities and polygons.

The project’s FINDINGS.md tracks progress and ARCHITECTURE.md the plan.