{
  "schemaVersion": 1,
  "labId": "webgpu-material-slot-compiler",
  "classification": "inspected-runtime-evidence-preview",
  "acceptanceStatus": "incomplete",
  "evidenceBundleId": "correctness",
  "canonicalSource": [
    "threejs-procedural-buildings-and-cities/examples/webgpu-material-slot-compiler"
  ],
  "canonicalSourceHash": "sha256:dd6b7dfc24b0553b4562b465dcfd3dcf5a10c6741d76da60e2f70ceb8355e500",
  "threeRevision": "0.185.1",
  "runtime": {
    "renderer": "WebGPURenderer",
    "backend": "WebGPU",
    "isWebGPUBackend": true,
    "threeRevision": "0.185.1",
    "nativeWebGPU": true,
    "initialized": true,
    "adapterClass": "unknown",
    "adapterIdentity": {
      "source": "exact retained renderer.backend.device reference after renderer.init()",
      "backendType": "WebGPUBackend",
      "deviceType": "GPUDevice",
      "deviceLabel": "",
      "deviceIdentityVerified": true,
      "lossPromiseObservedOnActualDevice": true,
      "rendererDeviceGeneration": 1
    },
    "deviceIdentity": {
      "verified": true,
      "source": "exact retained renderer.backend.device reference after renderer.init()",
      "deviceType": "GPUDevice",
      "generation": 1
    }
  },
  "claimVerdicts": {
    "visualCorrectness": "PASS",
    "mechanismCorrectness": "PASS",
    "performanceCompliance": "INSUFFICIENT_EVIDENCE",
    "gpuAttribution": "INSUFFICIENT_EVIDENCE",
    "lifecycleStability": "INSUFFICIENT_EVIDENCE"
  },
  "primaryImage": "final.design.png",
  "primaryImageLabel": "Material-slot presentation readback",
  "images": [
    {
      "file": "final.design.png",
      "meaning": "Material-slot presentation readback.",
      "source": "final.design.png",
      "sourceSha256": "sha256:2fe4485816dbfc87e8eba17f116dcd094539d66bced9c53f8f1236f195f4292d",
      "outputSha256": "sha256:2fe4485816dbfc87e8eba17f116dcd094539d66bced9c53f8f1236f195f4292d",
      "width": 1200,
      "height": 800,
      "encoding": "png-copy"
    },
    {
      "file": "diagnostics.mosaic.png",
      "meaning": "Module-geometry diagnostic presentation.",
      "source": "diagnostics.mosaic.png",
      "sourceSha256": "sha256:2ac72b8d7d5b75c415b1d7764e9dbcdec1fe14a562a90009c0280b476b9ad41c",
      "outputSha256": "sha256:2ac72b8d7d5b75c415b1d7764e9dbcdec1fe14a562a90009c0280b476b9ad41c",
      "width": 1200,
      "height": 800,
      "encoding": "png-copy"
    },
    {
      "file": "camera.near.png",
      "meaning": "Near camera building presentation.",
      "source": "camera.near.png",
      "sourceSha256": "sha256:0700a0bf66ff8898a002d7191f801ef9c544fa91939fa5adce8de2a1521bfa0b",
      "outputSha256": "sha256:0700a0bf66ff8898a002d7191f801ef9c544fa91939fa5adce8de2a1521bfa0b",
      "width": 1200,
      "height": 800,
      "encoding": "png-copy"
    },
    {
      "file": "camera.design.png",
      "meaning": "Design camera building presentation.",
      "source": "camera.design.png",
      "sourceSha256": "sha256:2fe4485816dbfc87e8eba17f116dcd094539d66bced9c53f8f1236f195f4292d",
      "outputSha256": "sha256:2fe4485816dbfc87e8eba17f116dcd094539d66bced9c53f8f1236f195f4292d",
      "width": 1200,
      "height": 800,
      "encoding": "png-copy"
    },
    {
      "file": "camera.far.png",
      "meaning": "Far camera building presentation.",
      "source": "camera.far.png",
      "sourceSha256": "sha256:5dba6ec3e2e3e509eefc5859a2e90e1cfafed07384d5f77f47915db36a3e3ec7",
      "outputSha256": "sha256:5dba6ec3e2e3e509eefc5859a2e90e1cfafed07384d5f77f47915db36a3e3ec7",
      "width": 1200,
      "height": 800,
      "encoding": "png-copy"
    },
    {
      "file": "seed-0001.final.png",
      "meaning": "Seed 1 building variant.",
      "source": "seed-0001.final.png",
      "sourceSha256": "sha256:2fe4485816dbfc87e8eba17f116dcd094539d66bced9c53f8f1236f195f4292d",
      "outputSha256": "sha256:2fe4485816dbfc87e8eba17f116dcd094539d66bced9c53f8f1236f195f4292d",
      "width": 1200,
      "height": 800,
      "encoding": "png-copy"
    },
    {
      "file": "seed-9e3779b9.final.png",
      "meaning": "Stress seed building variant.",
      "source": "seed-9e3779b9.final.png",
      "sourceSha256": "sha256:5b4739fb19026e9e25ab4fbe671e44804eff2fcfe4506ca27da401c9a538ab4c",
      "outputSha256": "sha256:5b4739fb19026e9e25ab4fbe671e44804eff2fcfe4506ca27da401c9a538ab4c",
      "width": 1200,
      "height": 800,
      "encoding": "png-copy"
    }
  ],
  "limitations": [
    "Native WebGPU MRT/presentation readbacks and seed/camera variants captured.",
    "Lab remains incomplete until every mechanism/tier route is release-accepted; no GPU timing claim."
  ]
}