Campaign OVERHAUL S1 chunk A. Retail's D3DPolyRender::ConstructMesh
@0x0059DFA0 is ported as one pure Core descriptor plus the Content
extraction that consumes it:
- side candidates come only from sides_type (0/1/2); NoPos/NoNeg mean
UV-array absence only and never suppress a side (CPolygon::UnPack
@0x00538650);
- ST_DOUBLE's second copy is reversed with a negative normal; ST_BOTH's
negative side has a negative normal and forward fan order (reverse is on
the copy ordinal, not the side ordinal);
- an absent UV-index array is UV index 0 (ConstructMesh @0x0059E691
xor ebx,ebx, arbitrated on the PDB-paired binary); copyVert @0x0059C080
zeroes coordinates only for a negative or out-of-range index or a vertex
without UVs, never by clamping to slot 0;
- the subset owner is the source surface-array index, emitted in ascending
slot order with retail's per-slot mask (2 > 8 > 4 precedence, positive
surface OR on signed stippling > 0);
- built-EnvCell admission is (Surface.Type & (BASE1_IMAGE|BASE1_CLIPMAP))
!= 0 after surface resolution (DrawEnvCell @0x0059F170 -> DrawMesh
@0x0059D4A0 arg4=1); untextured slots are constructed but not emitted;
- cell batches carry SourceSurfaceIndex, RetailSurfaceMask, RawSurfaceType,
IsCellShell, and fixed clockwise raster cull (RenderMeshSubset
@0x0059CA10); authored sides_type is no longer stored as GPU cull.
Prepared-mesh serializer gains the four fields; bake recipe 7 -> 8 with a
FullRebuild migration; pak format stays 2 (pinned). Ordinary GfxObj
extraction is unchanged. AP-234's register row and CellMesh unification
land in chunk B.
Core: 32 descriptor tests. Content: 170/170. Bake: 18/18. Launcher.Core:
365/365 (Lane!=Linux). Solution Release build 0 warnings / 0 errors.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
TDD: ObjectMeshDataSerializerTests + the shared ObjectMeshDataEquality
field-by-field comparator (reused by Task 6's equivalence suite) written
first, confirmed a compile failure against the not-yet-existing
ObjectMeshDataSerializer type.
Serializes EVERY field of the ObjectMeshData family per the plan's
normative layout: primitives raw LE, arrays as count:i32+payload,
blittable arrays (VertexPositionNormalTexture[], ushort[], byte[]) via
MemoryMarshal.AsBytes bulk copy, TextureBatches written sorted by the
(Width, Height, Format) key tuple for run-to-run determinism regardless
of dictionary insertion order, nullable fields as present:byte+value.
EnvCellGeometry nests recursively (MeshExtractor can populate one level
today; the serializer supports arbitrary depth rather than assuming it).
Namespace-trap finding: StagedEmitter.Emitter resolves to
DatReaderWriter.DBObjs.ParticleEmitter (the dat DBObj, verified via
reflection against the pinned Chorizite.DatReaderWriter 2.1.7 package
and confirmed live by MeshExtractor's `emitter.HwGfxObjId.DataId` call
site compiling), NOT AcDream.Core.Vfx.ParticleEmitter (the runtime
particle-simulation type with a live Particle[] pool that would NOT be
serializable asset data). All ~31 of its fields are written explicitly
rather than delegating to its own Pack/Unpack, which require a live
DatBinWriter/DatBinReader bound to a DatDatabase — coupling our pak's
determinism to a third-party wire-format helper we don't control the
versioning of.
33 tests green: 9 round-trip fixtures (empty/vertices+indices/multi
texture-batch-groups/setup-parts/emitters/nullable-present/nullable-
absent/edge-lines/nested-EnvCellGeometry), same-instance-twice byte-
identity, and dictionary-insertion-order-independence (two orders ->
identical bytes) plus a key-sort-order assertion on the raw bytes.
