Matthew Stanley
e7f7fb6cf0
overlay: unify cache read/write location + fix missing ws_cull symbol in DLLs
...
Two framework bugs that made overlay variants run interpreted forever (the
"agonizing lag" in overlay-heavy areas like Tomba's dwarf village):
1. Cache read/write divergence. The loader reads <exe>/cache and the runtime
writes captures to <exe>/overlay_captures.json, but the gcc autocompile path
used the game.toml command verbatim, whose hard-coded --out-dir/--captures
pointed elsewhere (build-stable/build-modern). So compiled shards landed where
the loader never looked and captures were read stale -> the variant never went
native. Fix: the runtime now injects PSX_OVERLAY_CACHE_DIR / PSX_OVERLAY_CAPTURES
(the canonical loader paths) into every autocompile spawn; compile_overlays.py
honors them over any CLI flag (--captures now optional). One source of truth for
the cache location, uniform across all games, dev or prod. gcc/tcc stay separated
by the existing <compiler> namespace.
2. Overlay DLL preamble missing psx_ws_cull_sltiu. auto_screen_x emits this helper
at every width-cull site into EVERY build's C (identity at 4:3), and the main EXE
links it from gpu.c, but the overlay DLL preamble never defined it -> any overlay
variant with cull sites failed to link -> no shard -> interpreter. Fix: provide
the self-contained helper (depends only on the already-forwarded psx_ws_x_margin)
in the DLL preamble.
Proven on Tomba dwarf village: dispatch_native 29/s -> 11454/s (was ~97% interp,
now ~97% native).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com >
2026-06-25 18:57:57 -07:00
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