AI: THE SOMNIUM FILES - nirvanA Initiative

Update 1.0.2 (v131072), SDK 13.3.5. Unity 2020.3.30f1 IL2CPP (Patrick's Parabox's Unity, 0100E44016C22000) with FMOD and Addressables bundles. Modules main, subsdk0 (the movie module) and sdk. Plays on the Mac and on the iPhone; 60 fps (present interval 1). It needed no host change. The README lists its IPA at about 11.6 GB.

What it needs

Memory

• The NPDM declares 16 MB of system resource. nninitStartup (main+0x493300) hands application pool − used memory to StandardAllocator as virtual address memory (StandardAllocator::Initialize(nullptr, pool − used)) and never calls SetMemoryHeapSize, as Patrick's Parabox (the same Unity 2020.3.30f1).
• Node area cut on the sdk build 3644a6760469451cabc99f00c540acc2: the AddressRegionManager constructor is at sdk+0x37c130 (limit = alias start + 0x3fe00000 at +0x28, a unit heap of 0x30-byte nodes); the cut changes mov w8,#0x3fe00000 → mov w8,#0x3e00000 at sdk+0x37c140 (the node area limit) and mov w9 the same at sdk+0x37c1dc (its length registered as an occupied region), 62 MB. The same build's region alignment cuts (4 MB, 32 MB and 1 GB classes → 2 MB) came with Pokémon Scarlet and Subnautica: Below Zero (010014C011146000).
• Pool: with the hardware pool (3.2 GB), StandardAllocator's 1 GB-aligned region and Unity's own regions used the alias region up to +4.26 GB of 4.38 in the first 5 s (the NSP script's heap check). So the profile has a 1 GB pool; the heap check now sets that for such a game (profile_guess.py heap_signals: the alias region nearly full within seconds and no heap; dm/games/README.md, Adding a game).
• Measured on the Mac over 15 minutes from boot through a new game into the first investigation (probes on VammManager::AllocateAddressRegion's success path sdk+0x37c2a0 and FreeAddressRegion sdk+0x37caf8, commits from the DM_SVC map log): StandardAllocator takes 960 MB at +64 MB and commits 0.29 GB of it; Unity's allocator (main+0x484024) holds about 1.10 GB in 170 regions (16.25 MB and 2.25 MB blocks, created and freed as scenes load), 1.03 GB of it mapped; 2.1 GB of regions live in all, 1.26 GB mapped, 1.96 GB resident.
• The highest region end climbs (+3.77 GB after 7 minutes) while the live total stays flat: the SDK places each region at the bottom of the highest gap that fits (sdk+0x37c2d0 walks the gaps from the top down), so new regions go above the highest live one until the top is used, and only then into the holes below.

Movies

• subsdk0 is the movie module; the game's movies play through Unity's video player (960x540 NV12 frames).

Rendering

• Docked, the game draws 1280x720 by its own choice and crops the 1920x1080 window to it. It presents at interval 1 (60 fps).

Files and shaders

• The shaders are Shader objects in the Addressables bundles of StreamingAssets/aa (they carry type trees) and in Data/Resources, and 147 ComputeShader kernels, which Unity 2020.3 keys by keyword set (shader_split.py unity_compute, variantMap).
• 6 geometry shaders (a wireframe effect, Unity's VR blit) do not build (game.tsv).
• romfs_marker is Data/StreamingAssets/aa/settings.json.

Input

• Controller only, docked, with the 3D pad layout (the investigation's view is on the right stick).

Found on this game

• ComputeShader variants keyed by keyword set in Unity 2020.3 (shader_split.py unity_compute, variantMap).
• The heap check's 1 GB pool rule for a game whose alias region is nearly full within seconds and that sets no heap (profile_guess.py heap_signals): dm/games/README.md, Adding a game.

Open

• The 6 geometry shaders are listed as not building in game.tsv; no source says whether the geometry compute path that now builds AI: THE SOMNIUM FILES' three (010089B00D09C000) builds these.
• The game has no entry in the development notes; its route on the Mac (a new game into the first investigation) is known only from game.tsv's memory comment.