The D321 stage-flag writer probe (chrSetStageFlags/chrUnsetStageFlags in
chraction.c, GAS_RELEASING destruction timestamp in propobj.c) did its job
(D321 trigger chain mapped + closed); all three blocks were #ifdef PORT
diagnostics with no N64-build or runtime effect when unset. Dropped the
GE-ENV-PROBES.md row too (drift check passes).
getenv hot-path sweep (D302 follow-up, HANDOFF M-192): function-level scan
of all 171 GE_* getenv sites found no uncached calls at frame/triangle rate
-- the only candidates are snd.c's event-rate probe guards (all #ifdef PORT)
and bossReturnTitleStage (once per title return). fast3d has zero raw
'if (getenv(' sites.
D255 was root-caused and fixed for real at M-140 (a 32-bit pointer
truncation in vtxstore_fix_refs, not a destroy-path race). This
objFree/getenv("GE_D255") trace was a correlation aid for the
now-superseded race hypothesis and never fires against the real fix;
HANDOFF already flagged it as strip-candidate scaffolding. The
vtxstore.c comment documenting the actual fix is untouched.
Adds a live-repro diagnostic for D255 (Facility door-opening terminal
SIGSEGV, Linux/Steam-Deck-only): vtxstore.c's vtxstore_fix_refs
(sub_GAME_7F09BAC4) skips-and-logs instead of dereferencing when it
finds a NULL model on an active PROP_TYPE_OBJ record, logging the
record's identity/state; propobj.c's objFree logs every free call so
the two logs can be correlated by prop/obj pointer. Both gated behind
GE_D255 (off by default, getenv-cached per the D250 lesson) - zero
behavior change unless set.
Attempted a live Windows repro this session (5 terminal activations
across 3 direct -level_34 launches): zero probe hits, zero crashes.
Combined with the existing WSL-negative result, this is now two
negatives against one Linux/Steam-Deck positive - the bug does not
reproduce on Windows, likely a genuine allocator/timing difference.
Landing the probes anyway since they're inert by default and are the
fastest path to a real trace whenever a Linux/Deck session is
available; no more Windows time should go toward a live repro here.
Claude-Session: https://claude.ai/code/session_01KwZViAFaXua3PKgHHjNgvi
* D222/D218: fix high-FovScale culling + add Video.DrawDistance
D222 (high FovScale breaks screen-edge culling): currentPlayerSetCameraScale()
derives both the frustum-cull plane normals and the fog/LOD
distance-visibility-fade scale (c_scalelod/c_lodscalez) from c_perspfovy,
which every viSetFovY/viSetAspect/viSetFov/viSetZRange call in fr.c was
setting from the nominal fovy -- never the portFovScale-widened value D211
already computes for the actual render projection two lines away. Factored
the widen-FOV math into a shared port/src/video.c helper (portScaleFovY,
same logic D211 already had inline) and fed it into all 4 currentPlayerSetPerspective
call sites. Identity at FovScale=100 by construction. Audited: the affected
fields are consumed only by render-side fog-visibility-fade and screen-space
transform code (propobj.c/bondview.c), not NPC AI visibility/behavior.
D218 (wide FOV exposes the fog/far-clip boundary): implements the
previously-parked plan. Video.DrawDistance (percent, 100-400, explicit
override) and Video.DrawDistanceAutoFov (couples the multiplier to FovScale
by default) applied in fogLoadCurrentEnvironment (bgfog.c) to both the
far-clip plane and the fog-blend distance read, so they stay consistent.
Clamped to [1.0, 2.5] per the plan's own far-field z-fighting caution.
Both new knobs added to the F10 overlay alongside FovScale.
Rebuilt clean, crash-free at FovScale=150/DrawDistanceAutoFov=1 on Dam.
bunker1 golden framediff was inconclusive in this dev box -- confirmed via
an A/B stash/rebuild that the unmodified baseline also fails it by a
similar/larger margin (pre-existing frame nondeterminism, not a regression
from this change).
D249 (default-FOV culling, sometimes) is unrelated/still open -- different
mechanism, not touched here.
Needs a human's eyes: does high-FOV screen-edge culling and the wide-FOV
fog/draw-distance artifacting actually look fixed now.
Claude-Session: https://claude.ai/code/session_016DQUKGLZxFtPy52MkKXXog
* D249 follow-up: add Video.LodDistance geometry-LOD scaling
Found a real, distinct geometry-LOD system in src/game/model.c:
MODELNODE_OPCODE_LOD nodes whose children are shown/hidden per-frame by
modelUpdateDistanceRelations() testing a view-space distance (scaled by
getPlayer_c_lodscalez(), now FOV-consistent per this branch's D222 fix)
against each node's MinDistance/MaxDistance -- separate from the
fog-visibility-fade D218 already covers. It has an existing ground-truth
multiplier hook, g_ModelDistanceScale, already used transiently by the
game itself (chr.c's 0.3125f close-up override, front.c/title.c's menu
modelSetDistanceDisabled calls).
Rather than write to that shared global (would fight those existing
overrides), compose a second multiplier at the same call site:
portLodDistanceMultiplier() (port/src/video.c), driven by new
Video.LodDistance (percent, 25-400, default 100) and
Video.LodDistanceAutoFov (default OFF, unlike DrawDistanceAutoFov --
this is meant as a standalone perf lever to pull down, not something
that silently costs more as FovScale widens). Inverse-scaled: 200%
keeps full detail twice as far (more cost), 50% drops to the lower LOD
twice as soon (less cost). Both new keys in the F10 overlay.
Identity at LodDistance=100. Rebuilt clean, crash-free at LodDistance=40
(aggressive) on Dam and at defaults on bunker1.
Claude-Session: https://claude.ai/code/session_016DQUKGLZxFtPy52MkKXXog
* D222/D218 follow-up: fix guard fade-early regression, retune draw-distance coupling
Live playtest on Dam found two issues in the D222/D218/D249 work:
1. Regression: D222's c_lodscalez widening (correct for the screen-edge
cull planes) is also read directly by propobj.c's
chrobjFogVisRangeRelated()/sub_GAME_7F054C58() -- the character/prop
fog-visibility-fade cutoff. Uncompensated, this made guards fade
sooner at wide FOV than before D222. Fixed by dividing that same
c_lodscalez reading by portDrawDistanceMultiplier() at both call
sites, so the "how far can you see" question stays answered
consistently across both consumers.
2. Tuning: a straight 1:1 FovScale auto-coupling on
portDrawDistanceMultiplier() wasn't aggressive enough -- live-tested
up twice (1x -> 2x -> 4x FovScale, clamp ceiling raised 2.5x -> 4.0x
-> 6.0x each time) until guards held up and the Dam tunnel's blue fog
artifact receded. Re-verified the fog ramp itself (not just the
far-clip cutoff) scales with the multiplier end-to-end.
User confirms this is good for now.
Temporary env-gated probe in handle_alarm_gas_timer_calldamage to force
and trace the alarm klaxon while investigating D207 (user report: alarm
SFX overrides other audio). #ifdef PORT + getenv, inert unless set.
Remove once D207 is resolved (see findings.md D207 / HANDOFF).
The vestigial u8* param2/param3 receive an AMMOTYPE enum and a u32 at
both callsites. GCC 14 treats enum->pointer as a hard 'incompatible type
for argument' error that -fpermissive does not downgrade (unlike the
int<->pointer permerrors). Guard the definition with #ifdef PORT to match
the callsites' actual types; params stay unused so codegen is unchanged
and the N64 source path is literally untouched.
- Commit CLAUDE.md + AGENTS.md so a fresh clone has the operating manual and
the ABI/no-game-logic rules (trimmed of stale phase status; the personal
pd_port path removed; points at the split docs).
- Sweep every stale doc reference across the tree after the restructure:
PCPortResearch.md -> internals.md / dev/findings.md,
PORT-LEARNINGS.md -> porting-notes.md,
AGENT-WORKFLOW.md -> dev-process.md,
docs/{GRAPHICS-BACKLOG,HANDOFF-ARCHIVE,GE-ENV-PROBES,LEVEL-*,TEXTURE-GLITCH-ANALYSIS,AUDIT-M6-*,AUDIO-PLAN}.md -> docs/dev/.
- Drop the superseded docs/PLAN-linear-level-sweep.md.
- docs/HANDOFF.md + docs/BACKLOG.md stay local-only (rolling working files);
CLAUDE.md now handles their absence in a fresh clone.
First real human WS6 playthrough. Each crash is a subsystem the 21-level
boot sweep never exercises.
- D135 (propobj.c) bgTestHitOnObj: unported N64 GBI parser — raw 8-byte-Gfx
byte/word indices desync on the PC 16-byte Gfx stream, walk off the DL.
Ported #ifdef PORT to gdl->words.w0/.w1 shifts (mirrors pd_port bg.c:3635).
Sub-fix: objHit:9717 div-by-0 — texnum recovery not portable, force -1.
- D137 (gunfire.c) gunDrawSight: s32 sp54 holds a Gfx*; 4-byte slot splices
adjacent stack into the pointer -> wild DL write on right-mouse aim.
#ifdef PORT: Gfx *sp54.
- D138 (snd.c) sndCreatePostEvent: parked audio never drains evtq->allocList,
per-objTick positional-sound posts stall the main thread ("1 room from the
end" freeze). #ifdef PORT no-op until audio lands (D77).
- D139 (cleanup_objects.c) cleanupObjects: read the propDef type via
(u8)obj[0] — correct only big-endian (type = low byte of the header word).
On LE that's extrascale -> walk never hits PROPDEF_END -> runs off the blob
-> frees garbage -> stage-unload crash. #ifdef PORT uses pdef->type.
UNVERIFIED (fast teardown test hit D140 first).
Open: D140 pause-menu watch-model NULL matrix; D118c aim-mode mouse-down
-> crouch. New harness tools_pc/repro_gdb.sh + build-pc/d136_cmds.txt.
-level_09 unregressed (91.65%). Docs: PCPortResearch §F D135-D140,
PORT-LEARNINGS §B/§C, HANDOFF M-23 + M-24 next-task.
D59/D64: the 'external GL DLL' crash was an unbounded blood-RLE write
(sentinel die_blood_image_end lost its N64 section adjacency on PC)
clobbering the gun-barrel sub-DL at ptr_logo_and_walletbond_DL+0x200.
D60: osPiStartDma DMA-target validation (VirtualQuery-based) in libultra.c.
D61/D63: TEMP env-gated ROM-read / VTX-pool / menu probes (strip list in
HANDOFF Task 3). D62: OSMesgQueue/OSScMsg PC layout verification.
D65/D65b: enum HEADS/BODIES signed sentinels under PORT (PC GCC picks
unsigned underlying types; N64 semantics were signed).
D66: romCopyAligned + ramrom replay 64-bit pointer width (s32 truncation
of .bss targets > 4 GiB). D67: struct image_entry N64 layout
reconstruction (dataoffset:24 first, all-u32 bitfields, sizeof==8).
D68: Globalimagetable BE->LE fixup (port/src/gimgfixup.c): bswap the
IMAGESEG-marked Gfx w1 words in the 17 ROM-copied DLs + sImageTableEntry.
index in the 32 tables after texReset's romCopy; marker scan moved to
bytes 6..7 under PORT; compiled globalDL shadows synced post-texLoad for
explosion.c's g_ExplosionDisplayLists.
Result: game boots, plays intro music, and renders the entire ~3.5-minute
intro (logo -> gun barrel with Brosnan -> cast screen) at ~59 fps. New
blocker D69: load_bg_file faults on first stage load - BG-file headers are
N64 big-endian segment-0x0F offsets read LE on PC. Full analysis + strategy
in PCPortResearch.md §F/D69; HANDOFF rewritten for the D69 session.
- D38: implicit function declarations truncated pointer returns on x86-64;
added port/include/pc_protos.h prototype shim (398 decls, C-only, anchored
in port/shim/PR/ucode.h) + pc_netorder.c for ntohl/ntohs; build warning-clean.
- D39: Globalimagetable rebasing - per-symbol offsets + GIMG_OFF() in
image_bank.c (== N64 (u32)&sym incl. the 0x02000000 base); segment end
markers extended to the true 0x13F8 size (CSV entry truncated by 0x930).
- D40: g_ModelHitEntries pool sized for the 40-byte PC ModelHitEntry stride
(was a 12KB .bss overflow clobbering is_ramrom_flag -> demo-replay SIGSEGV).
- D41: release the GL context from the host main thread after videoInit so
the game scheduler thread can bind it (WGL single-thread currency; this
SDL2 build's MakeCurrent return value is an inverted ABI artifact).
- D42: rsp.c g_gfxTaskSettingsList XOR toggle -> explicit toggle on x86-64.
Boot now renders real frames ([NOTE] frame N rendered in ... us). Next
blocker D43 (model-file loading ABI mismatch) documented in PCPortResearch.md
section F/H; HANDOFF.md rewritten for it.
All ~235 translation units now compile and the target links under MSYS2
GCC 16 + CMake/Ninja (ninja ge007 -k 0: 236/236, zero errors). N64 build
untouched; every src/ change is -DPORT-gated.
Portability fixes (findings D7-D17 in docs/PCPortResearch.md section 11):
- AI X-macro system: SWITCH() call sites activated to the author's
hand-written byte-identical references under PORT; port/shim/
bondaicommands.h + bondconstants.h + CPPLib.h re-emit the IDO paste
tricks (isSubroutine, file-record macros, generated CALL) GCC-clean.
- 64-bit pointer-in-word initializers: monAnim jump targets now go
through an index table resolved by the interpreter (chrai.h/propobj.c);
UsetuplenZ.c credits pointer PORT-gated to 0.
- IDO printf engine compiled for PC (xprintf/xlitob/xldtob) with a
shadow xstdio.h resolving the _Printf prototype clash.
- Host-libc gaps stubbed in port/: bcopy/bzero, __libm_qnan_f,
tlbmanage*, g_ViXScales/YScales; chrObjRandom PRNG ported from .s.
Asset data strategy (D16): single-file assets compiled for real
(animation tables, fonts, textures, rareware logo); obseg per-file .c
excluded (colliding file-local globals the N64 build isolates via
per-ELF linking); 758 ROM-derived table symbols + ramrom_* + segment
markers stubbed in port/src/assetstubs.c / n64stubs.c.
fast3d is a no-op placeholder (port/src/gfxstub.c) until Phase 2 brings
in the real software RSP. Binary not yet runnable end-to-end: ROM
loading in romdata.c is still a TODO.
James Dansereau