EN-061: SSR fireflies are the indoor blizzard

[proggeramlug]

Bisect-proven with f12-live: speckles survive SSGI/SSAO/shadows off, vanish with SSR off. Shooter ships SSR off (planar probe covers water; SSR measured invisible outdoors). Ticket carries the engine-side fix shape: roughness cutoff, firefly clamp, Hi-Z hit validation.

Summary by CodeRabbit

• Documentation
  • Added a ticket documenting an interior sparkle/firefly rendering issue that occurs when screen-space reflections are enabled.
  • Included reproduction steps, affected scenarios, current mitigation, and reference screenshots.
  • Documented proposed rendering improvements to reduce artifacts, including roughness filtering, brightness clamping, and improved hit validation.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: f22a1a3f-def1-4965-a15d-84e562f685b3

📥 Commits

Reviewing files that changed from the base of the PR and between 9998b33 and a98641d.

📒 Files selected for processing (1)

• docs/tickets.md

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📝 Walkthrough

Walkthrough

Added EN-061 to docs/tickets.md, documenting an SSR-enabled interior firefly artifact, its suspected Hi-Z and TSR interaction, reproduction guidance, screenshots, current mitigation, and required engine fixes.

Changes

SSR indoor fireflies

Layer / File(s)	Summary
Document SSR artifact and fixes docs/tickets.md	Adds EN-061 with observed behavior, reproduction steps, screenshot references, the attributed SSR/Hi-Z mechanism, and proposed roughness, luminance, and hit-validation fixes.

Estimated code review effort: 1 (Trivial) | ~2 minutes

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/en-061-ssr-blizzard

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