Three.js WebGPU Skill Pack

incomplete

Native WebGPU Cached Clipmap Shadow Lab

This report separates published implementation state from accepted evidence. Every value below comes from the schema-v2 registry, the emitted source manifest, or promoted same-lab artifacts.

Open demo Owning skill Published source manifest Registry JSON Canonical source

Lab id: webgpu-cached-clipmap-shadow
Kind: Canonical Lab
Owning skill: Scalable Real-Time Shadows
Execution: rendering
Three.js: 0.185.1
Source hash: sha256:ef8576bd7bb49d234967864afbb9638e126f5398b3704015c39f285d14a33281
Published bundle hash: sha256:a09d4d33ccfe8751f26199ac9c847f19e9d3ccbff6c273ff61afbcaae5e7bd1e
Build revision: sha256:6c7881ab73865696d689489de465e1cd67e1f2242d43641279abac777df0479b
Renderer: Not promoted
Backend: Not promoted
Evidence contract: v2
Tracked release bundle: Absent

Claim verdicts

canonicalAcceptanceINSUFFICIENT_EVIDENCE

hardwarePerformanceNOT_CLAIMED

Promoted same-lab media

No same-lab evidence image is promoted for this report. The page intentionally shows status and proof requirements instead of substitute art.

Required capability and runtime proof

Capabilities

native-webgpuincomplete

No capability evidence is recorded.

comparison-depth-texturesincomplete

No capability evidence is recorded.

Runtime proof

renderer-initincomplete

No runtime evidence is recorded.

backend-is-webgpuincomplete

No runtime evidence is recorded.

mechanism-reachableincomplete

No runtime evidence is recorded.

aligned-readbackincomplete

No runtime evidence is recorded.

receiver-consumes-committed-levelsincomplete

No runtime evidence is recorded.

actual-depth-resource-readbackincomplete

No runtime evidence is recorded.

sequential-child-shadow-submissionsincomplete

No runtime evidence is recorded.

scheduler-fairnessincomplete

No runtime evidence is recorded.

caster-visible-shadow-parityincomplete

No runtime evidence is recorded.

Capture state

Field	Published value
Primary route	`/demos/webgpu-cached-clipmap-shadow/`
Cameras	`near, design, far`
Seeds	`0x00000001, 0x9e3779b9`
Modes	`final, shadow-contribution, shadow-depth, level-centers, level-validity, scheduler, silhouette-parity, owner-graph`
Capture time	`Not present in the promoted report data`
Adapter identity	`Not promoted`
Raw readback hashes	`Not promoted`

Fixed routes

Kind	Id	Startup state	Status
scenario	`bounded-baseline`	`{"scenario":"bounded-baseline","tier":"high","mode":"final"}`	incomplete
scenario	`depth-span`	`{"scenario":"depth-span","tier":"high","mode":"final"}`	incomplete
scenario	`fixed-footprint`	`{"scenario":"fixed-footprint","tier":"high","mode":"final"}`	incomplete
scenario	`persistent-coverage`	`{"scenario":"persistent-coverage","tier":"high","mode":"final"}`	incomplete
scenario	`slow-subtexel-pan`	`{"scenario":"slow-subtexel-pan","tier":"high","mode":"level-centers"}`	incomplete
scenario	`bias-sweep`	`{"scenario":"bias-sweep","tier":"high","mode":"shadow-contribution"}`	incomplete
scenario	`swept-caster-invalidation`	`{"scenario":"swept-caster-invalidation","tier":"high","mode":"level-validity"}`	incomplete
scenario	`age-priority-round-robin`	`{"scenario":"age-priority-round-robin","tier":"high","mode":"scheduler"}`	incomplete
scenario	`alpha-displaced-instanced-morph`	`{"scenario":"alpha-displaced-instanced-morph","tier":"high","mode":"silhouette-parity"}`	incomplete
mechanism	`bounded-shadow`	`{"scenario":"bounded-baseline","tier":"high","mode":"final"}`	incomplete
mechanism	`csm`	`{"scenario":"depth-span","tier":"high","mode":"final"}`	incomplete
mechanism	`tiled-shadow`	`{"scenario":"fixed-footprint","tier":"high","mode":"final"}`	incomplete
mechanism	`cached-clipmap`	`{"scenario":"persistent-coverage","tier":"high","mode":"final"}`	incomplete
mechanism	`texel-snap-and-pan`	`{"scenario":"slow-subtexel-pan","tier":"high","mode":"level-centers"}`	incomplete
mechanism	`bias-sweep`	`{"scenario":"bias-sweep","tier":"high","mode":"shadow-contribution"}`	incomplete
mechanism	`targeted-invalidation`	`{"scenario":"swept-caster-invalidation","tier":"high","mode":"level-validity"}`	incomplete
mechanism	`scheduler-fairness`	`{"scenario":"age-priority-round-robin","tier":"high","mode":"scheduler"}`	incomplete
mechanism	`caster-position-parity`	`{"scenario":"alpha-displaced-instanced-morph","tier":"high","mode":"silhouette-parity"}`	incomplete
tier	`ultra`	`{"tier":"ultra"}`	incomplete
tier	`high`	`{"tier":"high"}`	incomplete
tier	`reduced`	`{"tier":"reduced"}`	incomplete

Locked tier contracts

ultra · incomplete

{
  "targetClass": "current high-end WebGPU adapter",
  "frameTargetMs": {
    "value": 16.67,
    "unit": "ms",
    "label": "Gated",
    "source": "Authored 60 Hz frame allowance; current-adapter timing evidence pending"
  },
  "resolutionPolicy": {
    "width": 1920,
    "height": 1080,
    "dprCap": 2
  },
  "mechanismLimits": {
    "dynamicLevels": 2,
    "updateBudget": 3,
    "correctionBudget": 3,
    "maxCacheAgeFrames": 48
  },
  "resourceLimits": {
    "mapSizes": [
      2048,
      2048,
      1024,
      1024,
      512,
      512,
      512
    ],
    "nominalMemoryGateBytes": 134217728
  },
  "degradationFromPrevious": [],
  "preservedInvariants": [
    "receiver-backed child shadow nodes",
    "stable light basis",
    "correctness invalidation before age refresh",
    "one directional illumination owner"
  ]
}

high · incomplete

{
  "targetClass": "current general-purpose WebGPU adapter",
  "frameTargetMs": {
    "value": 16.67,
    "unit": "ms",
    "label": "Gated",
    "source": "Authored 60 Hz frame allowance; current-adapter timing evidence pending"
  },
  "resolutionPolicy": {
    "width": 1920,
    "height": 1080,
    "dprCap": 1.5
  },
  "mechanismLimits": {
    "dynamicLevels": 2,
    "updateBudget": 2,
    "correctionBudget": 2,
    "maxCacheAgeFrames": 64
  },
  "resourceLimits": {
    "mapSizes": [
      1024,
      1024,
      1024,
      512,
      512,
      512,
      512
    ],
    "nominalMemoryGateBytes": 67108864
  },
  "degradationFromPrevious": [
    "reduce the two finest map dimensions",
    "reduce ordinary and correction update budgets"
  ],
  "preservedInvariants": [
    "receiver-backed child shadow nodes",
    "stable light basis",
    "correctness invalidation before age refresh",
    "one directional illumination owner"
  ]
}

reduced · incomplete

{
  "targetClass": "binding and memory constrained WebGPU adapter",
  "frameTargetMs": {
    "value": 16.67,
    "unit": "ms",
    "label": "Gated",
    "source": "Authored 60 Hz frame allowance; target-adapter timing evidence pending"
  },
  "resolutionPolicy": {
    "width": 1280,
    "height": 720,
    "dprCap": 1
  },
  "mechanismLimits": {
    "dynamicLevels": 1,
    "updateBudget": 1,
    "correctionBudget": 1,
    "maxCacheAgeFrames": 96
  },
  "resourceLimits": {
    "mapSizes": [
      512,
      512,
      512,
      256,
      256,
      256,
      256
    ],
    "nominalMemoryGateBytes": 33554432
  },
  "degradationFromPrevious": [
    "halve shadow map dimensions",
    "update one dynamic and one queued level at a time"
  ],
  "preservedInvariants": [
    "receiver-backed child shadow nodes",
    "stable light basis",
    "correctness invalidation before age refresh",
    "one directional illumination owner"
  ]
}

Limitations

No tracked accepted v2 runtime bundle is published for this source hash.
2 required capability records remain incomplete.
9 required runtime-proof records remain incomplete.
No current-hardware performance claim is published without named-adapter timestamp evidence.