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feat(render): Phase A8 Wave 2 — EnvCellRenderer (WB EnvCellRenderManager port)

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The core port. 1013 LOC of WB-faithful rendering algorithm:

- GetEnvCellGeomId        : WB EnvCellRenderManager.cs:94-103 verbatim
- PrepareRenderBatches    : WB EnvCellRenderManager.cs:247-373 verbatim
                            (parallel frustum-cull, per-cell slow path,
                            ThreadLocal merge, atomic snapshot swap)
- Render(filter:)         : WB EnvCellRenderManager.cs:395-511 verbatim
                            (filter-driven gfxObj group + draw call build)
- RenderModernMDIInternal : WB BaseObjectRenderManager.cs:709-848
                            (single-slot variant; resize buffers,
                            group by cull mode + additive, MDI draw)
- PopulatePartGroups      : WB EnvCellRenderManager.cs:572-580 verbatim
                            (Setup part recursion via PopulateRecursive)
- RegisterCell / FinalizeLandblock / RemoveLandblock — streaming seam
  (no WB analog; bridges acdream's existing StreamingController +
  LandblockStreamer to the renderer's per-cell instance store)

Documented deviations from WB:
- Drop _useModernRendering branch (Phase N.5 mandatory modern path)
- Drop SelectedInstance/HoveredInstance highlights (no editor state)
- _activeSnapshotGlobalGroups/GfxObjIds as sibling fields on the class
  rather than on the snapshot (EnvCellVisibilitySnapshot per Task 4 spec
  only carries BatchedByCell + VisibleLandblocks; global groups only
  used in the unfiltered Render(pass) path which we don't take)
- ConcurrentDictionary<uint, EnvCellLandblock> keyed by full 32-bit
  landblock id (WB uses ushort packed key; acdream uses full id throughout)

10 unit tests (GetEnvCellGeomId determinism + bit-33 dedup flag +
NeedsPrepare + dispose semantics + RemoveLandblock idempotence). Build
green; 23/23 Wave 1+2 tests pass.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Erik 2026-05-27 14:55:15 +02:00
parent fc68d6d01f
commit f16b8e9812
2 changed files with 1129 additions and 0 deletions
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1013
src/AcDream.App/Rendering/Wb/EnvCellRenderer.cs Normal file
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