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docs / devlog / 2026-05-25_fast_vs_hd2d_plaza_reference_shadow_bloom_cycle131.md
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feat(hd2d): add plaza reference shadow bloom

Intent

Cycle 130 improved validation and separated world-space sun/shadow layers, but the parent-review frames still read too flat because the world quads were subtle against the plaza wall and floor. Cycle 131 adds a camera-space HD-2D paint pass so the reference-like black shade, bright sun bloom, and diagonal shafts are visible immediately in the review view.

Scope

  • Add central-plaza-only runtime camera paint plates in FastVsRealtimeLightShadowRig.
  • Paint a late-rendered shadow plate with broad diagonal shade, contact darkness, side vignette, and dapple breakup.
  • Paint a late-rendered sun plate with pale sun patches and stronger diagonal shafts.
  • Keep the plates inactive outside the central plaza by using the existing camera-grade root activation.
  • Add Cycle 131 validation and parent-review screenshots, including docs/review/ output.

Validation

Planned runner:

& .\tools\cycle-runner.ps1 -CycleNumber 131 `
  -ValidateMethod 'Anemora.EditorTools.AnemoraFastVsHouseSliceSetup.ValidatePlazaReferenceShadowBloomCycle131Batch' `
  -CaptureMethod 'Anemora.EditorTools.AnemoraFastVsHouseSliceSetup.CapturePlazaReferenceShadowBloomCycle131ScreenshotsBatch' `
  -BuildMethod 'Anemora.EditorTools.AnemoraFastVsHouseSliceSetup.BuildAndValidateBatch' `
  -DevlogPath 'docs/devlog/2026-05-25_fast_vs_hd2d_plaza_reference_shadow_bloom_cycle131.md' `
  -Audience parent_review `
  -NoRollback

Expected screenshots:

docs/devlog/screenshots/fast_vs_hd2d_cycle131_plaza_reference_shadow_bloom_parent_review_20260525_01

  • parent_review_01_current_central_plaza_reference_shadow_bloom_follow.png
  • parent_review_02_current_central_plaza_reference_shadow_bloom_floor.png
  • parent_review_03_current_central_plaza_reference_shadow_bloom_facade.png
  • parent_review_04_current_library_reference_shadow_bloom_guard.png

Visual Gate

  • Central plaza should show obvious black shade and pale sun bloom in the camera view.
  • The effect should be immediately visible compared with Cycle 130, not only a small material tweak.
  • Library guard should remain visually unchanged.