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REPLAY 1.20 · RESEARCH NOTES

The asset brain

A linked map of loading, rendering, and collision evidence.

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SOURCE NOTE · Updated 2026-09-28 14:20:05 UTC
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SModels and Brush Models

Target-binary evidence

Atlas indexes Load_ProcessStructLayout_GfxBrushModel at RVA 0x6177E0 (735 bytes), associated with archive_impl_tr_types_db.h:9203-9224. It also indexes GfxWorld layout registration at RVA 0x4D1BA0, where the candidate source registers an inline GfxWorldStaticModels component named smodels. Generated static-model loader families are indexed in archive_impl_r_staticmodel_db.h. These are exact target symbol/RVA observations and candidate-source mappings; details in Evidence Scope.

Candidate serialized layout

  • Candidate GfxWorld static-model aggregate: smodels is registered at candidate offset 0x170, size 0x318 (archive_impl_r_bsp_db.h:32753). The nested type is GfxWorldStaticModels. Its entire field table is not reproduced here until each field is source-matched and reviewed.
  • Candidate GfxBrushModel: size 0x60, alignment 4. Its registered bounds record is at 0x38 (bounds size 0x18), radius at 0x50, BSP surface start/count at 0x54/0x58, and MDAO volume index at 0x5C (archive_impl_tr_types_db.h:9203-9224).
  • Atlas also lists GfxBaseSModelSurfData, GfxSModelInstanceData, and SModel surface/material indirection loader names. Their presence indicates separable model-instance/surface-related records, but does not by itself establish the full instance stride or material index table interpretation.

Format observations

The candidate world record owns static-model data in a nested aggregate; brush models point into a contiguous BSP-surface range and carry bounds/radius. This supports a candidate rendering-side grouping distinct from clipmap collision records. It does not imply brush render geometry equals cmodel collision geometry.

Confidence and unknowns

  • High: target generated loader symbols (notably GfxBrushModel) and the GfxWorld symbol are indexed with RVAs.
  • Medium: candidate association to generated render/static-model sources.
  • Candidate only: sizes, offsets, and field semantics.
  • Unknown: exact GfxWorldStaticModels sublayout, SModel instance packing, lighting/visibility indirections, and relationship to the clipmap collision structure.

Evidence: Evidence Scope · Atlas validation · brush loader source · static-model loader source · world loader source.