accepted

WebGPU Temporal History

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 Promoted evidence summary Tracked v2 bundle manifest Canonical source

Lab id: webgpu-temporal-history
Kind: Mechanism Demo
Owning skill: Image Pipeline
Execution: rendering
Three.js: 0.185.1
Source hash: sha256:2f41080c1ecbec60bc1f3678e21c2039ede72793e8ba39260302cef254c97c3f
Published bundle hash: sha256:0c853c5bb65d20d9787442fe1f989f7bcaadb265ccdac4792fc86ea6cee2a785
Build revision: sha256:d929feed6bb69df4ba0bca7a58c723f6c257d003c20d1e9417d25ccb25e4ecf9
Renderer: WebGPURenderer
Backend: WebGPUBackend
Evidence contract: v2
Tracked release bundle: Present

Claim verdicts

visualCorrectnessPASS

mechanismCorrectnessPASS

performanceComplianceNOT_CLAIMED

gpuAttributionNOT_CLAIMED

lifecycleStabilityPASS

visualErrorPASS

Promoted same-lab media

WebGPU Temporal History: Final temporal composite — **Final temporal composite**inspected-runtime-evidence-preview · sha256:c59bc4edc073728081c1a3f1deaabfdd9af99cb9bdcb82086bd0b18b4b5bd7cf

WebGPU Temporal History: No-post / HDR path — **No-post / HDR path**inspected-runtime-evidence-preview · sha256:9c3c4570a6d5b49921a9e19935a8871aaf8a2bc1126881e451e091a38bc073ce

WebGPU Temporal History: Temporal-history diagnostic — **Temporal-history diagnostic**inspected-runtime-evidence-preview · sha256:42e58436b7ff1e0c281e25c8ccffbf3c1aa269acd192f043fdd63daae8d1e6d2

WebGPU Temporal History: Near camera — **Near camera**inspected-runtime-evidence-preview · sha256:51a9d1a5d582dd189b31fdc6836c5bebd8329f3f12b4144cfb66a7b96bd2481b

WebGPU Temporal History: Design camera — **Design camera**inspected-runtime-evidence-preview · sha256:aa39ed58046c02673a2ac984f42816cf8429eaa4311fcbfe0673261e5211e84e

WebGPU Temporal History: Far camera — **Far camera**inspected-runtime-evidence-preview · sha256:f77f00421a7b260e2ee742f8b873d39e381b7ea193aa3d665010bbdc4d18dd15

WebGPU Temporal History: Seed 0x1 final — **Seed 0x1 final**inspected-runtime-evidence-preview · sha256:6890f6c16d2f071e5c47e1126374efa6485185f4bad2294ae818bfec752dfe07

WebGPU Temporal History: Seed 0x9e3779b9 final — **Seed 0x9e3779b9 final**inspected-runtime-evidence-preview · sha256:fc752a39e042057bbb068849e34aed112b4628421753102a2ca262088b49e491

WebGPU Temporal History: Temporal t0 — **Temporal t0**inspected-runtime-evidence-preview · sha256:b5ac4bda094684826587ebe654e96a6f740fb01a590ceb0937e0a75615744936

WebGPU Temporal History: Temporal t1 — **Temporal t1**inspected-runtime-evidence-preview · sha256:2b5e9ec2a851a8ac7f549196af933b6082e689d10d7d8eb71524d428453f0398

Required capability and runtime proof

Capabilities

native-webgpuaccepted

renderer backend gate after initialization

Runtime proof

static-velocity-zeroaccepted

INSUFFICIENT_EVIDENCE

moving-velocity-signaccepted

INSUFFICIENT_EVIDENCE

fresh-history-after-resetaccepted

INSUFFICIENT_EVIDENCE

render-or-compute-workaccepted

unified-v2 approved release: correctness + CDP physical + offline signoff

Capture state

Field	Published value
Primary route	`/demos/webgpu-temporal-history/`
Cameras	`near, design, far`
Seeds	`0x00000001, 0x9e3779b9`
Modes	`final, velocity, temporal-current, temporal-history, temporal-resolved`
Capture time	`Not present in the promoted report data`
Adapter identity	`{"source":"LabController.getMetrics","backendType":"WebGPU","deviceType":"unknown","deviceLabel":"","deviceIdentityVerified":false}`
Raw readback hashes	`Not present in the promoted preview summary`

Fixed routes

Kind	Id	Startup state	Status
scenario	`moving-rigid-subject`	`{"scenario":"moving-rigid-subject"}`	accepted
mechanism	`velocity-history-rejection-reset`	`{"mechanism":"velocity-history-rejection-reset"}`	accepted
tier	`full`	`{"tier":"full"}`	accepted

Locked tier contracts

full · accepted

{
  "targetClass": "current-adapter correctness",
  "frameTargetMs": null,
  "resolutionPolicy": {
    "scene": 1
  },
  "mechanismLimits": {
    "temporal": true
  },
  "resourceLimits": {
    "physicalBytes": null
  },
  "degradationFromPrevious": [],
  "preservedInvariants": [
    "current-minus-previous NDC velocity",
    "TRAA jitter owner",
    "rebuild-on-reset"
  ]
}

Limitations

Correctness and CDP Chrome hardware physical-route visual review pass on the current source closure.
Named-adapter GPU timestamp timing remains NOT_CLAIMED.