Kern lighting system guide: dataflow, stage boundaries, DDA call placement rules, telemetry metrics, and static/dynamic split contract. Use when editing any lighting shader or C# — geometry cache, cascade trace/resolve, dynamic polar, bounce cache/solve, or composite. Triggers on: LightingTypes.hlsl, DDA.hlsl, CascadeTrace, CascadeResolve, DynamicPolar, DynamicLightTrace, BounceCache, BounceSolve, CompositeLighting, TraceLightSegment, TraceRadianceSegment, LightingDdaSegments, LightingDdaTexelVisits, SolveCascade, ResolveDirect, BuildCellSolidMask, SolveDiffuseBounce, BuildBounceTaps, IFrameTelemetry.
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Run score Not tested
See how to installReview the instructions the agent will receive before you install.
| File | Stage |
|---|---|
LightingTypes.hlsl, Extinction.hlsl, GeometryField.hlsl, DDA.hlsl | Shared primitives |
GeometryCache/GeometryCache.hlsl | BuildCellSolidMask |
Cascades/CascadeTrace.hlsl | SolveCascade (DDA traversal) |
Cascades/CascadeResolve.hlsl | ResolveDirect (atlas lookup) |
Dynamic/DynamicPolar.hlsl | TraceDynamicPolar, DynamicRadianceFromPolar (DDA) |
Dynamic/DynamicLightTrace.hlsl | SolveDynamicLighting, ComposeDynamicLighting |
Bounce/BounceCache.hlsl | BuildBounceTaps, BuildBounceFilter (DDA) |
Bounce/BounceSolve.hlsl | SolveDiffuseBounce |
Composite/CompositeLighting.hlsl | CompositeLighting |
FORBIDDEN to add DDA calls (TraceLightSegment, TraceRadianceSegment) inside:
CascadeResolveDynamicLightTraceBounceSolveCompositeLightingLightingDdaSegments or LightingDdaTexelVisits in IFrameTelemetry.LightingDdaSegments / LightingDdaTexelVisits did not grow unexpectedly.Academic papers on GI and Radiance Cascades are in docs/lighting-research/.
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Refactor bloated AGENTS.md, CLAUDE.md, or similar agent instruction files to follow progressive disclosure principles. Splits monolithic files into organized, linked documentation.
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Build and operate a live game using Unity Services. Use when the user needs to implement, connect, or debug backend-driven features — battle passes, achievements, player progression, cloud saves, leaderboards, matchmaking, virtual economies, server-authoritative logic, anti-cheat, player accounts and authentication, remote configuration, feature flags, A/B testing, analytics, or cloud resource deployment. Triggers on live-ops, live service, backend, server authority, cloud code, cloud save, remote config, player data, retention, monetization loop, season pass, ranking, multiplayer sessions, lobbies, or any Unity Services integration.
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Kern engine critical invariants: coordinate system, UI Toolkit positioning, RenderTexture blit, LifetimeScope/scene structure, VolumeProfile editor API, camera pixel-grid alignment, performance analysis rules, profiler interpretation, and the no-fallback policy. Use when touching coordinates, WorldToScreen, UI element anchoring, RenderTexture, LifetimeScope, VolumeProfile, camera, FPS analysis, Profiler markers, or any code near an "invariant" comment. Triggers on: CoordinateUtils, MapManager.WorldHeight, RuntimePanelUtils, CameraTransformWorldToPanel, WorldToLocal, PositionWriteEpsilon, CameraPixelGridAligner, LifetimeScope, RegisterComponent, VolumeProfile, AssetDatabase.AddObjectToAsset, EditorLoop, VSync, fallback, paper white, FPS, frame time.
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Kern project C# conventions, namespace rules, DI/VContainer patterns, and assembly layer boundaries. Use when writing, editing, or reviewing any C# file — MonoBehaviours, ScriptableObjects, services, contracts, factories, or editor scripts. Triggers on: namespace, nullable, asmdef, VContainer, RegisterComponent, IObjectResolver, composition root, Kern.Contracts, primary constructor, record struct, SA1513, _camelCase, PascalCase, asmref, MonoScript.GetClass.
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Synchronize and compile FMOD Studio banks into StreamingAssets
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Kern HDR/color pipeline contract: scene-referred linear working space, paper white units, radiance format rules, URP output transform ownership, DisplayFinal perceptual/linear space, UI brightness, HDR calibration screen, safe-start HDR switch, and HDROutputController usage. Use when touching lighting shaders, glow, bloom, tonemapping, post-processing, color grading, LUT, display output, UI colors, calibration, or any code with DisplaySettings / HDROutput / PaperWhite / Tonemapping / CompositeFinal / DisplayFinal / VisualTuning. Triggers on: saturate on radiance, clamp color, sRGB in shader, UNorm light buffer, ARGBHalf, paper white, HDROutputReconciler, VisualTuning, BT2390, detectPaperWhite, HDRCalibrationScreen, HDRSwitchPending, HDROutputSettings.
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