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Dion Moult
d92121a62d
CPU cull (frustum + contribution + LOD + opaque/transparent partition) and its companion GPU-upload step now live in ViewportCore. The HiZ occlusion test stays in VW — the pyramid + async readback machinery hasn't migrated yet — and is plumbed through a ViewportCore::HizOccludedFn callback the render path binds when HiZ is enabled-and-fresh. Null callback means "no occlusion test", which keeps the cull path host-agnostic. extractFrustumPlanes + aabbInFrustum moved up into CameraMath.h so both VW's render() (where the planes are extracted) and core's cull (where they're tested) can share without one #including the other. LOD-debug counters (lod1_dbg_count_, lod0_dbg_eligible_count_, lod0_dbg_no_lod1_count_, lod1_dbg_tris_saved_) moved to core too — they're written by cull and read/reset by VW's still-here per-frame [frame] heartbeat through reference aliases.