M03 — Renderer Facade and Safe Extraction

Outcome

Закрыть монолитный streamer стабильным API и постепенно извлечь тестируемые подсистемы без rewrite.

Steps

Ввести WorldRenderFacade для focus, environment, entity visuals, ground query и metrics.
Запретить gameplay/editor доступ к внутренним очередям streamer.
Извлечь pure StreamingTargetPlanner.
Извлечь RenderBudgetScheduler с bounded queues/cancellation.
Затем извлекать terrain, M2, WMO и liquid services по одному.
Сохранить cache versioning и main-thread GPU finalization rules.
Добавить dependency и performance regression checks.

Fidelity evidence

Все baseline checkpoints сравниваются до/после; placement, visibility, animation и materials не меняются без отдельной fidelity-задачи.

Exit criteria

Runtime и Editor используют facade; planner/scheduler тестируются без полного мира; p95/p99 и hitch budgets не хуже согласованного baseline.

Evidence

Date: 2026-07-17
Revision/worktree: master merges 7ece2ab, 7e35de7, 80cb084, d6e5b53, c69abd6, 606770c, 630a0c1, f36fabb, 24aef13, 2342430, 396be5e, f88bf97, 3f84717, d2cb52f; packages M03-RND-SCHEDULER-001, M03-RND-INTERNAL-ACCESS-GATE-001, M03-RND-FACADE-GROUND-QUERY-001, M03-RND-FACADE-ENVIRONMENT-001, M03-RND-FACADE-ENTITY-001, M03-RND-TERRAIN-CACHE-SERVICE-001, M03-RND-TERRAIN-LOD-PLANNER-001, M03-RND-TERRAIN-CHUNK-QUEUE-001, M03-RND-M2-UNIQUE-REGISTRY-001, M03-RND-M2-PLACEMENT-TRANSFORM-001, M03-RND-M2-PLACEMENT-GROUPER-001, M03-RND-M2-BUILD-BATCH-PLANNER-001, M03-RND-WMO-PLACEMENT-RESOLVER-001
Commands: dedicated scheduler/planner/facade/focus/coordinate/manifest/shutdown headless verifiers; Godot cold editor parse; coordination, documentation and diff gates.
Results: scheduler cases=6 iterations=20000 elapsed_ms=10.216; planner cases=5 average_ms=1.804; facade/focus passed; coordinate boundary files=111 consumers=6; renderer manifest retained 7/7 checkpoints; shutdown ownership and repository gates passed. Internal-access gate additionally derived 43 private symbols and found no forbidden access across 7 gameplay and 9 EditorPlugin-package sources plus the terrain probe. Ground facade passed delegation=5 ground_contract=2; cold RenderedGroundSample contract=3; environment integration passed cold snapshot contract=5 and facade delegation=6 environment_contract=7; dry-run retained all 7/7 plans and applied the dusk checkpoint at time=19.00. Entity presentation passed snapshot_cases=8 lifecycle_cases=14 runtime_scenes=2; facade expanded to delegation=9 entity_contract=6, while character presentation remained 9/10/3/1. Terrain quality cache passed contract_cases=15 loader_calls=3; internal-access inventory decreased to 42 because the loader no longer owns the LRU-order field. Terrain chunk LOD planner passed cases=7 iterations=250 elapsed_ms=12.630; post-merge facade, internal-access and 7/7 manifest gates remained green. Terrain chunk geometry queue planner passed cases=8 iterations=100 elapsed_ms=229.324; internal-access remained 42 and post-merge facade and 7/7 manifest gates stayed green. M2 unique placement registry passed cases=10 iterations=100 elapsed_ms=35.513; the historical uid:11785 cross-tile smoke, internal-access 42, facade and 7/7 manifest gates remained green after merge. M2 placement transform resolver passed cases=9 iterations=10000 elapsed_ms=27.409; post-merge M2 registry, internal-access 42, facade, 7/7 manifest, documentation and coordination gates remained green. M2 placement grouper passed cases=9 iterations=100 placements=256 elapsed_ms=67.104; post-merge transform resolver, registry, internal-access 42, facade, 7/7 manifest, documentation and coordination gates remained green. M2 build batch planner passed cases=8 iterations=20000 elapsed_ms=14.532; post-merge grouper, transform resolver, registry, internal-access 42, facade, 7/7 manifest, documentation and coordination gates remained green. WMO placement resolver passed cases=9 iterations=20000 elapsed_ms=27.919; post-merge renderer materials, shutdown, internal-access 42, facade, 7/7 manifest, documentation and coordination gates remained green. WMO placement registry passed cases=10 iterations=100 elapsed_ms=53.941; all 21 adjacent WMO/M2/terrain/facade/scheduler/streaming/coordinate regressions and the 7/7 checkpoint dry-run passed; post-merge registry (54.178ms), resolver, shutdown, facade, documentation and coordination gates remained green. M02 terrain-query regression remained green (13 pre-existing expired M00 claim warnings).
Fidelity comparison: all 16 historical operation limits and drain sites were preserved; chunk removal/create retain their shared removal-first budget. Defaults, quality presets, cache versions and visual rules are unchanged. Rendered-ground diagnostics preserve the prior 5000-unit ray, 3x3 search and 2/5/10/20/40-unit nearby fallback while hiding mutable renderer state. Environment snapshots preserve the prior fixed-clock assignments while DBC profile/area/skybox selection, interpolation, fog, sun and shader rules remain unchanged. Runtime produces no world-entity commands yet, so player/world output and all baseline plans remain unchanged by the new present/remove ownership boundary. Terrain revisit cache retains the same admitted/excluded sources, LRU touch/trim, profile capacities and three loader adapter sites; no cache format changed. Chunk LOD keeps horizontal XZ chunk-center distance, inclusive squared thresholds, sparse-index omission and raw negative-radius squaring at both loader call sites. Chunk operation planning preserves stable removals, nearest-first create sorting, tile-LOD remove-all takeover, sparse tile-origin fallback and XZ-only distance; loader still drains removals first through the shared chunk_geometry budget. M2 positive MDDF.uniqueId retains uid:<decimal> first-owner semantics, within-call duplicate suppression, cross-tile skip/retry and unkeyed pass-through. M2 regular Euler, Elwynn cliff-rock shell correction, waterfall yaw/local-axis twist, tall-waterfall anchor compensation, path normalization and caller scale clamps are unchanged across worker grouping, placeholders and direct instances. M2 worker grouping retains invalid-record filtering, case-sensitive lowercase .mdx/.mdl conversion, first-seen group/per-group placement order, tile-local origin subtraction and the 0.0001 scale clamp. M2 build batching retains animated/static limit selection, minimum-one clamp, remaining-transform cap and the exact offset/group-completion cursor rules. WMO cache-key normalization, positive MODF identity with tile/index fallback and world position/Euler/unclamped-scale transforms are unchanged across lightweight render, cached-scene and live-prototype paths. WMO first/idempotent/shared/non-owner/final/global reference behavior is unchanged; the extracted registry owns only String reference sets while the loader retains the parallel key-to-Node map and final-release cancellation/free. No new build-12340 parity claim is made; asset-backed visual/p95/p99 comparison remains pending.
Changed files: scene-free scheduler and verifier; streamer budget composition/ permit delegation; scheduler module spec; world renderer/module registry/RENDER notes; renderer-owned ground sample, facade/loader ground query, migrated terrain probe, immutable environment snapshot, facade/sky adapter, migrated checkpoint time input, contract-v1 entity snapshot, renderer-owned entity presenter, runtime composition, scene-free terrain quality Mesh cache and loader store/restore/clear adapters, immutable terrain chunk LOD policy, pure planner and both loader plan adapters, pure terrain chunk geometry queue planner and loader queue-adoption adapter, stateful M2 unique placement registry, loader reserve/release/clear adapters and migrated historical dedupe smoke, stateless M2 placement transform resolver and three transform consumers, stateless M2 placement grouper and worker adapter, stateless M2 build batch planner and loader cursor adapter, stateless WMO placement resolver and seven cache/identity/transform adapters, stateful WMO placement registry and global/tile add/release/clear adapters, expanded facade/internal-access/coordinate verifiers; work-package claims and this evidence.
Remaining risks: queue storage length and worker concurrency/stale-result logic remain streamer-owned; cancellation stops new permits but does not interrupt in-flight work; the environment snapshot currently covers world time but not weather or indoor state; entity PackedScene loading is synchronous and not accepted for network-scale hot paths; terrain cache is entry-count bounded without Mesh-byte metrics and the remaining terrain build/tasks/state/finalization stay monolithic; chunk LOD asset-backed p95/p99 and visual acceptance remain pending; chunk queue planning adds a second tile-state pass whose asset-backed p95/p99 still needs acceptance, while queue drains and geometry finalization remain monolithic; private Azeroth data was absent for the asset-backed ADT placement probe; M2 asset-backed visual transform recheck, grouping/build/tasks/caches/finalization and boundary traversal p95/p99 remain pending; path grouping is not yet culling-driven spatial-cell grouping; M2 resource/queue transitions and raw build-job Dictionaries remain in the loader; WMO build/resource state and asset-backed placement/portal/material evidence remain pending; M03 still needs further terrain/M2/WMO/liquid service extraction and dependency/performance acceptance.

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