The 1 GiB array limit counted wire bytes, but arrays are kept as f64/i64,
so boolean arrays grew 8x and 32-bit arrays 2x past it, and nothing bounded
the total across arrays. Every Model linked to a Geometry also built its own
copy of the mesh.
- A per-import Budget (2 GiB) is charged 8 bytes per array element before
the array is decompressed or widened, ASCII files are charged for their
parsed values, and each built mesh is charged for its vertex and index
data. Going past it fails the import with a clear error instead of an
allocation abort. parse_within/read_within take a lower limit for tests.
- Models instancing the same geometry with the same materials share one
mesh; a different material mapping still gets its own.
Fixes#1234
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01N9kwMcw2pYQ5fSjKa3ZPnh
Problem: After Effects 26 imports FBX models into Advanced 3D comps; File > Import rejected
.fbx, so FBX product shots and scenes could not be used.
Fix: a clean-room FBX 7.x reader in effectcraft-model (binary node records with 32/64-bit
offsets and zlib arrays, ASCII syntax) and a scene builder: meshes with normals, UVs and
per-polygon materials, the Model hierarchy with the SDK transform (pivots, offsets, pre/post
rotation, rotation order, geometric transform), Lambert/Phong materials onto
metallic-roughness with embedded or relative textures, and GlobalSettings axes turned to
Y-up. Wired into import, probing, the media browser and the file dialog. Hostile input
(truncation, corruption, huge arrays, deep nesting) fails with an error.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
