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>
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