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https://github.com/RetroPortingToolKit/psxrecomp
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Matthew Stanley
7e1421be7c
The first FMV A/B was run on a fresh worktree whose overlay shard cache was cold AND whose autocompile could never work: game.toml points at psxrecomp-v4/recompiler/build-t2/psxrecomp-game.exe while the documented build recipe builds the recompiler at build-recompiler/ in the worktree root, so it failed 8/8 with WinError 2 and the runtime silently ran interpreted (dispatch_native = 0). The '40 fps / ~19 underruns per second' attributed to master in the previous commit was that broken setup, not master. Re-measured against the fully warm cache with the pre-SPU exe as a control in the same worktree: interp_share 0.7813 vs 0.7775, exc_share 0.2386 vs 0.2381, 39.1 vs 38.0-38.4 fps. Identical within noise, so the DSP work is free. Separately characterises the real pre-existing defect: the FMV is 96% native by dispatch count but 78% interpreted by wall clock with 24% in exception handling, even warm. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>