seedds
626e6a6188
- Files and shaders: Next Level Games' engine keeps every RomFS file but the Wwise banks in archives of its own, <name>.dict indexing zlib chunks in <name>.data; update 1.4.0 ships <name>.patch beside the unchanged base files, a variant bitmask and per-section records that rebuild each section from base and patch bytes (the game's algorithm, main+0x1c8d0 / 0x1cbd0). shader_split.py nlg_shaders reads both: 5,317 shaders (5,149 in the base game), all in init, control sections back to back in one section and their code areas in the same order in another, one NVN program per stage (SINGLE_STAGE '#NLG'); 46 of the first 103 the title uses exist only in the update (docs/agents 01)
- Shader chain, for every game: a texture array over the driver table c2 (Ryujinx's texture array from a buffer, fp_t2das_cb2_0: 586 shadow-cascade pixel shaders indexed by (0x80 + cascade offset) / 8) is named tex_c2a / samp_c2a with its c2 offset (dmsh_build.py c2_array), and the replay fills element k from the slot whose c2 word lies at that offset + 8k (nvn_refl NVN_RB_TEXA / NVN_RB_SAMPA, nvn_mtl.m c2_handle). A pixel shader that writes an output from integer bits, or nothing but constants, gets a second entry point main0_u whose colour outputs are the unsigned vectors of the same bits (dmsh_build.py fs_uint); a pipeline whose written colour attachments are all unsigned integer formats takes it (pso_all_uint). The G-buffer is R32Uint + RGBA8Uint: about 1,400 pipelines failed to build and every scene draw was skipped. Every other profile's dmsh_chain.h rewritten with its c1_full / cb_extent lists carried over (the change touches no c1 or uniform read); Luigi's Mansion 3 built for Mac and iOS
- Host, for every game: the game patches texture handles into its recorded command buffers in place, at the command start + 0x10 it took from GetCommandMemoryUsed before nvnCommandBufferBindTexture (main+0x7c8964; the store at main+0xb7d0d4), so a single texture bind is recorded in the hardware's layout, {stage, slot, handle at +0x10, texture / sampler pool bases} (OP_BIND_TEX1, nvn_obj.h bind_rec decodes it at every replay site); the host's own layout put the patched handle over the bind count, the post passes read stale handles (a stretched icon over the title, a white screen in a new game) and a corrupted record now gets a red line. t_nvn: the handle patched at the command start + 0x10 is the one replayed (102 checks)
- Host, for every game: a depth texture drawn through a colour view of the same pixel size (a D16 1024x1024 texture through an R16 view; Metal has no colour view of a depth texture, and the boot aborted in pipeline validation) draws into a colour shadow, copied in before and back after the pass as a compressed target is (nvn_mtl.m shrt_block, D16 and D32F); nvnCommandBufferSetDebugLabel; nvnBlendStateSetAdvancedMode (red line for a mode other than none); a draw whose program has a geometry shader with no library gets a red line naming it (it is drawn without that stage, with the vertex shader's positions as clip coordinates)
- Frame rate: 60 fps (30 on the Switch). The frame limiter (main+0x7a3e70, a frame callback called with the milliseconds since the frame began, main+0xb7c308) runs jobs or sleeps until 33.333 ms have passed, a float in read-only data (main+0x13c94dc), and the game steps by the time that really passed: the same 2 s walk and 1.5 s turn from the same save end at the same spot at 30 and 60 fps, and the title's animation matches at time scale 1.00 (DM_NVN_REGLUM). hle_fpslock.c gets rows with no pointer (the field at main + offset; the loader leaves read-only data writable, the image's data block on iOS too) and a frame-time kind: 1000 / fps_target, at 60 less 0.5 ms, since the work after the limiter made an exact 16.667 ms 59.6 fps with a frame shown twice every 2.5 s; slightly shorter, the presents set the pace (lobby 60.0 fps, display interval p99 18.69 → 16.67 ms). Profile fps_target 60 with present_interval display (the game also asks for interval 2); DM_FPS_TARGET=30 keeps the game's 33.333 ms
- Not done: the tessellation stages (15 hull, 18 domain shaders: two programs draw twice a frame for about 30 frames, in the title scene behind the file select as it slides out before a new game; skipped, since Metal 4 has no tessellation stage) and 10 geometry shaders (none drawn from the title to the lobby). Vertex shaders that feed them can be found from the shader headers (docs/agents 04)
- Mac: the boot notices, the title, a new game, the opening cutscene (the bus ride, the arrival at the hotel) and the lobby in play at 60 fps, about 3.7 GB phys_footprint (3.0 GB of Metal allocations); red lines at run time: the geometry shader that does not build, the conditional render the host draws anyway, primitive restart 0xff (no 8-bit strip seen). Diagnostics: DM_NVN_TREG_ID=n logs that texture ID's registrations; the pass dump prints the handles of texture binds
134 B
134 B
| 1 | # chain b-de816a27c566 2026-10-23T08:37:08+08:00 (list carried over from b-60dcdd3b2f22: that chain change did not touch any c1 read) |
|---|