Building Support Matrix

Capability	Support level	Scope	Diagnostics
Native GeoJSON building import	Pro-gated	Available only when the native/Pro path is present.	pro_gated_path when unavailable.
Native CityJSON building import	Pro-gated	Available only when the native/Pro path is present.	pro_gated_path when unavailable.
Python fallback geometry	placeholder/fallback	Current fallback paths can create zero-geometry building records.	placeholder_fallback.
MapSceneBuildingLayer supported source intent	underdeveloped	Typed MapScene recipes record building source identity, support level, geometry count, bounds, and material status.	missing_external_asset, unsupported_asset_format, pro_gated_path, placeholder_fallback, experimental_feature, or unsupported_feature.
Scalar PBR materials	underdeveloped	Scalar material values exist and MapScene can preserve material status, but production building material rendering is not fully integrated.	Support matrix entry plus validation diagnostics.
Textured PBR buildings	unsupported	MapScene records albedo texture path intent, UV coordinates prerequisites, texture format, and affected material/object IDs, but does not render textured PBR buildings end to end.	missing_texture_path, missing_uvs, unsupported_texture_format, placeholder_fallback, pro_gated_path.

Building workflows must not treat zero-geometry fallback output as successful ingestion.

Textured building material intent requires an albedo texture path, readable local asset metadata, supported image suffix, and UV coordinates for the affected geometry. scalar fallback is not textured PBR support; it must be reported as a placeholder/fallback diagnostic and diagnosed before render. This non-MVP-blocking textured-material deferral keeps the current offline map workflow honest while avoiding claims of material parity with DCC or game engines.