accepted

WebGPU Touch History Frost

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 Tracked v2 bundle manifest Canonical source

Lab id: webgpu-touch-history-frost
Kind: Canonical Lab
Owning skill: State-Transition Dynamic Surface Effects
Execution: rendering
Three.js: 0.185.1
Source hash: sha256:cf45abc35d5dd9f1c5b5f180e1c57de0a44fdbcd281126dd53121a31f3af2ac3
Published bundle hash: sha256:4c7a8b64d18cb9640fc08b0436e68490ae4d3201d61ef1e3e8cd293f0846714e
Build revision: sha256:b951f17018466135b2d841a246127bf96c7f617f6274e73736ec257a7293369f
Renderer: Not promoted
Backend: Not promoted
Evidence contract: v2
Tracked release bundle: Present

Claim verdicts

canonicalAcceptancePASS

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-webgpuaccepted

renderer backend gate after initialization

storage-textureaccepted

real RGBA16F ping-pong history textures

computeaccepted

guarded two-dimensional history update dispatch

Runtime proof

renderer-initaccepted

await renderer.init() in canonical browser controller

backend-is-webgpuaccepted

renderer.backend.isWebGPUBackend === true

mechanism-reachableaccepted

fixed mechanism routes select canonical graph state

odd-size-dispatchaccepted

641x359 coverage with explicit 8x8 bounds

aligned-readbackaccepted

capturePixels derives integer 256-byte-aligned row stride

render-or-compute-workaccepted

unified-v2 approved release: Playwright correctness + Chrome hardware physical-route review + offline visual signoff

Capture state

Field	Published value
Primary route	`/demos/webgpu-touch-history-frost/`
Cameras	`near, design, far`
Seeds	`0x00000001, 0x9e3779b9`
Modes	`final, no-post, diagnostics, scene-color, vertical-blur, horizontal-blur, frost-noise, frozen-structure, highlight-structure, previous-history-ra, deposit-ra, next-history-ra, frost-mask-before-pointer, frost-mask-after-pointer, sharp-blur-mix, main-refraction-offset, detail-refraction-offset, final-without-refraction`
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	`touch-history-frost`	`{"scenario":"touch-history-frost","tier":"balanced"}`	accepted
mechanism	`history-and-deposit`	`{"mechanism":"history-and-deposit"}`	accepted
mechanism	`diffusion`	`{"mechanism":"diffusion"}`	accepted
mechanism	`blur-and-reconstruction`	`{"mechanism":"blur-and-reconstruction"}`	accepted
mechanism	`crystal-field-and-normals`	`{"mechanism":"crystal-field-and-normals"}`	accepted
mechanism	`refraction-and-fresnel`	`{"mechanism":"refraction-and-fresnel"}`	accepted
mechanism	`full-vs-dirty-vs-idle`	`{"mechanism":"full-vs-dirty-vs-idle"}`	accepted
tier	`full`	`{"tier":"full"}`	accepted
tier	`balanced`	`{"tier":"balanced"}`	accepted
tier	`budgeted`	`{"tier":"budgeted"}`	accepted

Locked tier contracts

full · accepted

{
  "targetClass": "close-inspection",
  "frameTargetMs": null,
  "resolutionPolicy": {
    "historyScale": 1,
    "blurScale": 0.5,
    "dprCap": 2
  },
  "mechanismLimits": {
    "workgroupSize": [
      8,
      8,
      1
    ],
    "diffusion": true,
    "twoScaleRefraction": true
  },
  "resourceLimits": {
    "historyFormat": "RGBA16F",
    "historySlots": 2,
    "bytesPerTexel": 8
  },
  "degradationFromPrevious": [],
  "preservedInvariants": [
    "persistent-history",
    "same-frame-response",
    "dt-correct-decay-and-deposit",
    "one-output-owner"
  ]
}

balanced · accepted

{
  "targetClass": "ordinary-inspection",
  "frameTargetMs": null,
  "resolutionPolicy": {
    "historyScale": 0.5,
    "blurScale": 0.33,
    "dprCap": 1.5
  },
  "mechanismLimits": {
    "workgroupSize": [
      8,
      8,
      1
    ],
    "diffusion": true,
    "twoScaleRefraction": true
  },
  "resourceLimits": {
    "historyFormat": "RGBA16F",
    "historySlots": 2,
    "bytesPerTexel": 8
  },
  "degradationFromPrevious": [
    "half-resolution-history",
    "lower-blur-resolution"
  ],
  "preservedInvariants": [
    "persistent-history",
    "same-frame-response",
    "dt-correct-decay-and-deposit",
    "one-output-owner"
  ]
}

budgeted · accepted

{
  "targetClass": "small-projected-footprint",
  "frameTargetMs": null,
  "resolutionPolicy": {
    "historyScale": 0.25,
    "blurScale": 0.25,
    "dprCap": 1
  },
  "mechanismLimits": {
    "workgroupSize": [
      8,
      8,
      1
    ],
    "diffusion": true,
    "twoScaleRefraction": false
  },
  "resourceLimits": {
    "historyFormat": "RGBA16F",
    "historySlots": 2,
    "bytesPerTexel": 8
  },
  "degradationFromPrevious": [
    "quarter-resolution-history",
    "single-scale-refraction"
  ],
  "preservedInvariants": [
    "persistent-history",
    "same-frame-response",
    "dt-correct-decay-and-deposit",
    "one-output-owner"
  ]
}

Limitations

No current-hardware performance claim is published without named-adapter timestamp evidence.