Systems / PC

DS1-Rebuilt

Dungeon Siege (2002)

Status

Playable

Platforms

Linux x86-64; macOS on Apple Silicon (in game, scripted runs)

Game release

GOG, version 1.11.1

Repository

JTM-rootstorm/DS1-Rebuilt

SwARc

platforms/win32 (commits)

Updated

2026-11-10

The project SwARc grew out of: the lifter, x87 model, runtime and HLE were written for Dungeon Siege and factored out into the shared library on 2026-10-12.

Status

Single player is playable from a new game to Wesrin Cross (about an hour of hand-played testing). Verified in play:

• menus, hero creation, the intro cinematic, Options and Exit;
• movement and combat, with the frame rate holding with a party at the krug camp;
• inventory, journal, map, spells, potions, hotkeys, skill level-ups;
• NPC conversations with voice, multi-stage quests, shops and the pack mule, party members, death and resurrection;
• region and basement transitions through Stonebridge to Wesrin Cross, and the first crypt;
• saving and loading;
• Miles audio (with EAX) and Bink movies.

Debug and release builds hold the game’s own 60 fps cap in game.

Not yet seen: regions past Wesrin Cross, the ending.

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 go from the menus and a new game through the intro cinematic (with its voice lines) into the farm: terrain, animated water, fog, the HUD, the pause menu, sound and voices, at a steady 60 fps, including fullscreen on a 5K display with the GPU cursor. Started and checked by hand (the intro, 5K fullscreen, the cursor) but not yet played by hand.

Native replacements

• Widescreen: the game’s window and display mode follow the host desktop instead of a fixed 1024x768, and the resolution list goes past 1024x768 to the desktop size and 16:9 modes up to 3840x2160 (listed in the Video tab; choosing one there not yet tried).
• Hor+ field of view: wide screens keep 4:3’s vertical view and see more at the sides, with nothing culled at the edges. On the view-distance branch, the world’s frustum widens with it, so terrain and objects load as far out at the sides as they did at 4:3.
• UI scale: the HUD and windows keep their 1024x768 proportions at any height, the compass and the cursor with them.
• The C runtime, on the same branch: the EXE’s statically linked Visual C++ 6 runtime (string and memory functions, 64-bit helpers, number parsing and formatting, the sprintf and sscanf engines, math intrinsics) runs on SwARc’s native copy, each function checked against the lifted original on random arguments. STL code is named for reading (every std::map and std::set, vector, list, deque and string), each name with its evidence.
• Software cursor on the GPU: the cursor is blended on the GPU with an asynchronous readback, which took a 5K display from ~50 to a steady 60 fps with the window focused.

Known gaps

• The GDI “Lucida Console” font texture is blank (dev console and debug text).
• IME functions are not provided.

The project’s FINDINGS.md tracks what works, what was fixed and what is known to be missing.