open-standards/wai/volumetric-conformance/fields/README.md

Integer neural fields: conformance corpus

Vectors for wai.field.int_grid and its levels, wai.field.int_refine (neural-fields). The criterion is field-equivalence: a conforming sink computes, from each scene's WIG1 payload and every prefix of its WIL1 levels, exactly the values it states at its points and exactly the frame it states at each view, by SHA-256, with no tolerance; it refuses every fault payload with the code stated; and it gives every level and every layer it is offered the outcome stated.

Provenance. Generated here, with no capture and no download. The scenes are written by tools/wai_int_field_export.py demo scenes/ (--check requires these bytes); everything else is derived from them by wai_int_field_vectors gen.

Layout

• scenes/<name>.wig1, scenes/<name>.l<k>.wil1: the payloads.
  • orb: fitted to a procedural scene (a ball and a box of absorbing medium, coloured by position); four levels of four features, the two finer read through the spatial hash; the payload carries the two coarser levels and declares the other two, which are its refinements orb.l2.wil1 and orb.l3.wil1: three stages, each presentable.
  • mlp: three levels of two features, two of them hashed, and a three-layer network, all seeded random: the network's general case, every level carried.
  • edge: one level and one layer with weights of no fraction bits: a density past the 32-bit clamp that makes the medium opaque within one sample, colours past both ends of their range, and a view partly outside the domain.
• vectors.json: for each scene, its points (corners, faces, the centre, points just outside the domain, and 24 seeded points inside), the extra views it is rendered at, and, for each stage (each prefix of its levels), the levels held, the values at every point, their values digest, and the frame digest at the scene's own view and at each extra view (an edge view starts inside the domain, another has fewer units of length than samples); refusals, one fault payload for every check of §8, WIG1 and WIL1, each with what it plants and its code; geometry, levels applied to the orb in order, out of order, twice, past its levels and in the wrong shape, each with its outcome (§7.3); and staged, envelopes offered to the orb's stage set in order (§7.4, a hold bound of zero), each with the stage it reaches or the reason it is not applied, and the final stage, freeze and stage hash.
• faults/<name>.wig1, faults/<name>.wil1: the fault payloads, and the levels of the wrong shape geometry applies.
• staged/orb.<name>.wai: the base and the layers, as WAI1 envelopes.

Running

cd ../../wai-rs
cargo run --no-default-features --features field_int --bin wai_int_field_vectors -- verify ../volumetric-conformance/fields
cargo run --no-default-features --features field_int --bin wai_int_field_vectors -- gen    ../volumetric-conformance/fields   # regenerate
cd ../volumetric-conformance
python3 -I field_verify.py fields

verify derives every file again and requires the committed bytes, recomputes every statement, and requires each fault of §11 planted in the decode to fail at least one. field_verify.py is the second implementation, written from the extension's text and sharing no code with wai-rs: it parses, applies the levels, computes the values, renders and stage hashes with its own integer arithmetic, checks every refusal and level outcome, and plants each fault of §11 in its own decode. It reads the staged sequences' final stages, not their envelopes.