sindoring
c5ecaba0ab
Work-Package: M03-RND-M2-MESH-RESOURCE-CACHE-001 Agent: sindo-main-codex Tests: 35 headless regressions, checkpoint dry-run, documentation and coordination gates pass Fidelity: cache ownership/lifetime extraction only; asset-backed visual parity remains unclaimed
100 lines
4.0 KiB
Markdown
100 lines
4.0 KiB
Markdown
# M03-RND-M2-MESH-RESOURCE-CACHE-001 — M2 mesh resource cache state
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<!-- OPENWC_CLAIM:M03-RND-M2-MESH-RESOURCE-CACHE-001:sindo-main-codex:2026-07-20 -->
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## Ownership
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- Target: M03
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- Program: RND
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- Owner/Agent ID: sindo-main-codex
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- Branch: `work/sindo-main-codex/m03-m2-mesh-resource-cache`
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- Lease expires UTC: 2026-07-20
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- Integrator: M03 milestone integrator
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## Outcome
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Extract the normalized-path to static M2 Mesh resource cache from
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`StreamingWorldLoader`, preserving lookup, replacement, shutdown lifetime and
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all existing cache consumers.
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## Non-goals
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- Own the shared M2 missing-path cache or animated/prototype node caches.
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- Call ResourceLoader, extract Meshes from Resources or select cache paths.
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- Prepare, rebuild or materialize M2 Meshes.
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- Change cache formats, material refresh, animation or visible behavior.
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## Paths
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- Exclusive: `src/render/m2/m2_mesh_resource_cache_state.gd`,
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`src/tools/verify_m2_mesh_resource_cache_state.gd`,
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`docs/modules/m2-mesh-resource-cache-state.md`, this claim
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- Shared/hotspots: `src/scenes/streaming/streaming_world_loader.gd`,
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`src/tools/verify_m2_mesh_load_pipeline_state.gd`,
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`src/tools/verify_render_runtime_cache_shutdown.gd`,
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`docs/modules/world-renderer.md`, `docs/modules/README.md`, `RENDER.md`,
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`targets/03-renderer-facade.md`
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- Generated/ignored: `.godot`, native DLL, generated M2 resources, caches and
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proprietary renderer corpus
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## Contracts and data
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- Non-empty normalized M2 paths map to at most one Mesh resource reference.
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- Store replaces the previous reference for the same path.
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- Lookup returns the exact retained Mesh reference; unknown/empty paths return null.
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- Clear releases all cache references only at the existing final-shutdown site.
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- Shared missing/prototype/animated caches remain loader-owned and unchanged.
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## Dependencies
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- Requires: accepted mesh load pipeline package on master `ef782d1`
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- Blocks: isolated M2 Mesh resource finalizer extraction
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- External state: none; verification uses synthetic Mesh resources
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## Verification
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- Commands: dedicated validation/store/replace/lookup/clear/source/timing
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verifier; mesh pipeline/classifier/material/shutdown/M2 build/facade/internal-
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access/manifest, documentation and coordination gates
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- Fixtures: synthetic ArrayMesh resources and normalized paths
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- Fidelity evidence: exact cache call-site and shutdown lifetime preservation
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- Performance budget: 100 cycles over 256 store/lookup entries under 1 second
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## Documentation deliverables
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- Inline public API docs
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- Module specification with inputs/outputs, ownership and source map
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- Data-flow, lifecycle/state and dependency diagrams
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- World-renderer, module registry and RENDER status updates
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## Simplicity and naming
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- Important name introduced: `M2MeshResourceCacheState`
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- Simplest solution: one RefCounted with one typed-purpose Dictionary
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- Rejected complexity: generic resource cache, missing-state merger, eviction,
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signals, callbacks or materialization ownership
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- Unavoidable complexity: none beyond retaining engine Resource references
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- Measured optimization evidence: bounded synthetic store/lookup loop
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## Status
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- State: ready
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- Done: cache state, loader/test adapters, contract verifier and required documentation
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- Next: integrator merge and post-merge smoke
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- Blocked by:
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## Handoff
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- Commit: `e990a65`
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- Results: dedicated cache verifier passes 100-by-256 store/lookups in
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38.974 ms; 35 headless renderer/coordinate regressions pass; checkpoint
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dry-run passes 7/7; documentation and coordination gates pass.
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- Remaining risks: no private M2 traversal, Mesh memory/leak/descriptor-pressure
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run or original-client visual comparison; extraction/preparation, shared
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missing state and materialization remain loader-owned by design.
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- Documentation updated: inline API; `m2-mesh-resource-cache-state.md` with
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data-flow, lifecycle, sequence and dependency diagrams; pipeline spec, module
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registry, `world-renderer.md` and `RENDER.md`.
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<!-- OPENWC_HANDOFF:READY:M03-RND-M2-MESH-RESOURCE-CACHE-001:e990a65 -->
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