M12-07A Status

status: done task: OBJ single-Mesh desktop positive fixture updated: 2026-08-18 America/New_York enablingTask: true parityStateChange: false

Scope

Pinned Blender 5.2 WM_OT_obj_export now generates one deterministic Wavefront OBJ object with four positions, four UV coordinates, one explicit normal, two triangle faces, two material records, and two material groups. The .mtl sidecar is kept beside the OBJ and both files are bound to the canonical semantic report. Web parsing/import, multi-object and negative cases remain queued.

Evidence

build_blender_5.2.0/bin/blender -b --factory-startup --python tools/web/generate-obj-single-mesh-fixture.py -- tests/files/web/m12_obj_desktop_v1 tests/golden/M12-07A/desktop-fixture.json completed with 4 positions, 4 UVs, 1 normal, 2 faces, and 2 materials/groups.
node tools/web/check-obj-single-mesh-fixture.mjs passed deterministic regeneration in a fresh temporary directory and byte-for-byte OBJ/MTL comparison: obj-single-mesh-fixture-ok vertices=4 normals=1 uv=4 faces=2 materials=2 deterministic=true next=M12-07B.
Runtime identity matches the pinned M12-05A Blender 5.2 inventory; the report is anchored to blender-5.2.0/source/blender/io/wavefront_obj and wm.obj_export.
Package hash remains frozen; no Web route or parity ledger status was changed.

Artifact Hashes

parent manifest: 1c732b8d9f1a0bdb502f44e2e843e91efea12e93483a35658f8a9c70a69a2430
generator: 604c3006f194c7c64a487b8f760693b66830f3cfa602928b46769955e7d4f358
checker: 3d0208f61a86d4d29796d8284756f53931c90864b15b7dfe4fcc84d7f65a8040
desktop report: 6c560a8eecf84973c2b05f9fd50d33bd45515e97c4f7970f1502de406c39f6a5
OBJ/MTL: a56694d1ee28735c68381ff18c3a52581612feebac0101a53e502956c27d144f / 392f1b10ff5a0b142d520a9443b4c96191985f15d4244c79b36fdeda0f153715
runtime inventory: 0d660b0fd8b647ebbf4e91afebd5006bd100973ab8e2507a5bfe759f477b33b4
package: cfb232baa494ff59f6c8d65514a08c86332ee9354350b2a0392b6f932a7ee42c
manifest: d80b74502202effa7be15640c945dc7e04af703b58e7a15c3fe7babc43c17b46

Next Task

M12-07B: OBJ multi-object, negative-index, MTL/texture-origin, and malformed-face cases.

Rollback

Remove the OBJ generator, checker, desktop report, OBJ/MTL fixture, manifest, and this status entry. Restore M12-06G as the queue tail and move the machine queue back to M12-07A. No parity ledger rollback is required.

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