Hollow Knight

Update 1.5.12620 (v589824) over the base game, SDK 20.5.21. Unity 6000.0.61f1 IL2CPP with FMOD (one AudioOut) on NVN. Modules main, subsdk0 (the SDK's movie library, for the MP4 cinematics) and sdk. Plays on the Mac: the title, a new game, the prologue text and opening cinematic, then King's Pass: walking, jumping, nail attacks, breaking its walls, killing crawlids, geo, damage, death, the shade, respawning, and a save loaded after a restart. No game-specific rewriter cut and no host change of its own. iPhone and iPad validation remains open.

What it needs

Frame rate

• 60 fps, as the game asks. While the opening cinematic plays it asks for present interval 2 (30 fps, frame time p50 33.3 ms).
• With a window, on the title: frame time p50 16.67 ms, p95 16.70 ms, max about 16.9 ms, with one 189 ms frame early in the title's load.
• Windowless, the fixed 60 Hz timer shows p95 up to 20 ms on the title and after a respawn, against 16.77 ms in other stretches of the same run. The window's numbers show that this does not reach the screen, so compare frame times only between runs of the same kind.

Memory

• As in Hollow Knight: Silksong: main never sets a heap and the log shows no StandardAllocator; Unity maps its memory itself in the alias region. See Unity 6 takes its memory with no StandardAllocator and no heap.
• The node area takes the SDK-wide function-matched cut on sdk+0x145d0c / +0x145d78 (dm/tools/sdk_patches.py MATCH_CUTS).
• Measured on the Mac in King's Pass over an 8-minute run with a death and respawn: the alias region's high-water mark +1.75 GB of 4.38 GB, 1.25 GB mapped; resident about 1.5 to 1.56 GB and 0.83 to 0.86 GB of GPU memory in play. A run from a loaded save stayed in the same range (+1.51 GB, resident 1.55 GB, 0.9 GB of GPU memory). Later areas are not measured.

Files and shaders

• The merged RomFS has 1,641 files, 3.46 GB: serialized assets, 228 FMOD banks and 16 MP4 movies.
• 1,812 shaders from the Shader objects of data.unity3d and the UnityFS bundles, read by unityfs.py; main also holds 11 GLSLC outputs of Unity's player.
• The prebuild makes 858 pipeline bases from 873 shader pairs on the Mac: none fail, 15 are left to the draws.
• pso_manifest.tsv has 110 lines, recorded along the route below and through a save load.

Mac routes

• Build with scripts/build_ipa_from_nsp.py <NSP folder> -k <prod.keys> --platform mac and use its printed command.
• From a fresh save, the title is up by about 25 s. A on Start Game, A on the first slot, then the prologue text and the opening cinematic (about two minutes; skipping was not tried) lead to King's Pass.
• In King's Pass, hold right. Walls of vines block the way until struck with Y (five strikes were always enough). Then there are a pit (B to jump out) and crawlids.
• A save written there loads with A, A from the title and returns to King's Pass.

Found on this game

• The prepare step inside the shader map's once: the crash at the first program with a window, already found and fixed on other games; this port added the kept prefetch items and the test.
• Existing Unity 6 Shader objects and the node area's function-matched cut work without another change.

Open

• iPhone and iPad runtime validation; no IPA has been built.
• Sound is checked only in the log (one AudioOut, no underruns): nobody has listened to it. Input has gone only through DM_CTL, not a controller or the keyboard.
• Dirtmouth and everything past King's Pass. Precise platforming through DM_CTL was impractical, so no door between rooms has been crossed here, and memory in later areas is not measured.
• The base game alone (v0) was not played or registered; packing it takes a derived profile.