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build_surface_cached

scc_context::surface

Function build_surface_cached 

Source 
pub fn build_surface_cached(
    compiler: &ContextCompiler<'_>,
    request: SurfaceRequest<'_>,
    cache: &mut Option<GlobalRankCache>,
) -> SurfaceRenderResult
Expand description

15.2-cache-seam: cache-aware sibling of build_surface (Wave 15.2, REQ-global-rank-cached-per-model-epoch). When cache holds a valid crate::startup::GlobalRankCache (loaded by crate::startup::load_global_rank_cache), the global PPR vector + symbol projection come from the cache — skipping SystemRanker::new (the heterogeneous node graph + adjacency + rarity build) and the 50 power iterations of global_vector(). The pipeline tail (required coverage, MMR, quotas, budget selection, render) runs identically, so the output is byte-identical to build_surface. On a miss (cache is None) the ranker is built once and the cache is FILLED (the caller persists it via crate::startup::store_global_rank_cache). Additive: B’s semantic field lands on SurfaceRequest/build_surface independently.