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M4.03

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@VTSTech VTSTech released this 18 Oct 17:53
· 62 commits to main since this release
M4.03
89963da

[M4.03] — 2026-10-18

Dead-code texture-reference fix: the corpus verdict moved from 2,567 LOAD /
91 FAIL to 2,637 LOAD / 21 FAIL — zero regressions at the pinned corpus
revision.

Fixed

  • Sampled-but-unbound textures behind preprocessor dead code (70 presets:
    Mega Bezel NO-REFLECT variants' ReflectionPass, uborder
    ambi_temporal_pass wrappers, ...): the sampler rewrite ran its
    sample-site check on the raw include-resolved text, so a name sampled only
    inside conditional blocks the GLSL preprocessor discards
    (#ifdef IS_NO_REFLECT_PRESET wraps both the ReflectionPass declaration
    and its sampling in NO-REFLECT variants) hard-failed the load although
    glslang discards every use. RewriteSamplers now answers the "is it
    sampled?" question on a glslang-preprocessed copy of the stage text — the
    exact text and environment CompilePass feeds glslang, with no host
    defines injected (injecting anything would diverge from the real compile
    and could flip dead code live). A name still sampled after preprocessing
    remains a hard failure; a dead-sampled orphan declaration drops with a
    warning, matching RetroArch. The oracle is computed lazily (at most one
    preprocess per stage, only on the old failure path — healthy presets pay
    nothing), and a preprocess failure falls back to the raw verdict, which is
    the pre-fix behavior.

Tests

  • test_slang_translate dead-code cases: dead #ifdef and dead #if
    shapes (dead declaration + dead sampling; live declaration + dead
    sampling) translate with no bindings emitted and drop warnings reported;
    the same conditional shape with a live gate still hard-fails with
    unknown texture reference.

Changed

  • corpus/baseline-ledger.txt refreshed: 2,658 presets → 2,637 loaded /
    21 failed    . The remaining 21 are not library failures: 6 koko-aio
    refs/ parameter-only overlays (no passes), 4 Adamant tilde variants
    (malformed shader indices), 6 nedi bilateral-variants (vhs.slang samples a
    play LUT the preset never declares), 1 crt-super-xbr (InfoCachePass
    absent from the mini-chain), 1 append-uborder-koko-ambi (template missing
    its appended chain), 1 technicolor + 1 gbc-frontlit (stray-quote malformed
    keys), and the corpus's own intentionally-invalid
    test/feedback-noncausal.

Full Changelog: M4.02...M4.03

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