Syoyo Fujita 188d7b257b Cross-version verifier comparing v3 C parser against v1 ground truth ...

Adds a structured DIGEST block (asset, buffers w/ FNV-1a hash, bufferViews,
accessors w/ min/max, mesh primitives w/ sorted attribute maps, nodes w/
normalized TRS+matrix, materials, textures/samplers/images, skins,
animations, cameras, scenes) emitted by both loader_example (v1) and
tester_v3_c (v3 C, now accepting a file arg). test_runner.py runs both,
diffs the digests, and reports counts/digest mismatches with v1 as truth.

Also rolls in /simplify follow-ups on top of 7f736d1: a shared
tg3__json_number_to_double helper to dedupe inline number coercions, a
collapsed fuzz_gltf_v3_c harness using a single tg3_fuzz_run dispatcher,
a rewritten max_safe_uint64_real comment explaining the 53-bit mantissa
constraint, and a tests/Makefile fix so tester_v3_c is a real prerequisite
of `all` (built once via the dedicated rule, not duplicated).

Verifier passes 134/134 on the Khronos glTF-Sample-Models/2.0 suite.
bufferView.target and image.mime_type/uri are intentionally excluded from
the digest: v1 infers target from accessor usage and rewrites image
URIs/mime via stb_image, neither of which is a parse-fidelity concern.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-05-09 11:50:28 +09:00

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fuzzer

Cross-version verifier comparing v3 C parser against v1 ground truth

2026-05-09 11:50:28 +09:00