{
  "schemaVersion": 1,
  "labId": "webgpu-exposure-color-pipeline",
  "classification": "inspected-runtime-evidence-preview",
  "acceptanceStatus": "incomplete",
  "evidenceBundleId": "webgpu-exposure-color-pipeline-v2",
  "canonicalSource": [
    "threejs-exposure-color-grading/examples/webgpu-exposure-color-pipeline"
  ],
  "canonicalSourceHash": "sha256:6030ee02f228505590a3a9c61ed20a8fc2955e63d64396fe6c098d18e82a5759",
  "threeRevision": "0.185.1",
  "runtime": {
    "renderer": "WebGPURenderer",
    "backend": "WebGPUBackend",
    "isWebGPUBackend": true,
    "threeRevision": "185"
  },
  "claimVerdicts": {
    "mechanismCorrectness": "INSUFFICIENT_EVIDENCE",
    "performanceCompliance": "INSUFFICIENT_EVIDENCE",
    "lifecycleStability": "INSUFFICIENT_EVIDENCE"
  },
  "primaryImage": "final.design.png",
  "primaryImageLabel": "Exposure and grading render-target readback",
  "images": [
    {
      "file": "final.design.png",
      "meaning": "Final exposure, tone-map, LUT, and output-transform readback.",
      "source": "images/final.design.png",
      "sourceSha256": "sha256:fe08f16a1076862bc019175eb990eef3ba275871605efc10d70cdb73c3802f42",
      "outputSha256": "sha256:fe08f16a1076862bc019175eb990eef3ba275871605efc10d70cdb73c3802f42",
      "width": 1200,
      "height": 800,
      "encoding": "png-copy"
    },
    {
      "file": "meter-source.png",
      "meaning": "Weighted log-luminance meter source diagnostic.",
      "source": "images/meter-source.png",
      "sourceSha256": "sha256:0b4b2630aaacd5c9439b988f3908a982ed9aadae9d133eb205523cd8df6c92d4",
      "outputSha256": "sha256:0b4b2630aaacd5c9439b988f3908a982ed9aadae9d133eb205523cd8df6c92d4",
      "width": 1200,
      "height": 800,
      "encoding": "png-copy"
    },
    {
      "file": "histogram-percentiles.png",
      "meaning": "Percentile-selection mask emitted by the histogram path; not a plotted histogram.",
      "source": "images/histogram-percentiles.png",
      "sourceSha256": "sha256:e2e1431f129d4e83296185f43d3bfe6e9cb908bb616a0b43661c9e422b2fb8ad",
      "outputSha256": "sha256:e2e1431f129d4e83296185f43d3bfe6e9cb908bb616a0b43661c9e422b2fb8ad",
      "width": 1200,
      "height": 800,
      "encoding": "png-copy"
    },
    {
      "file": "meter-mask.png",
      "meaning": "Metering-mask diagnostic.",
      "source": "images/meter-mask.png",
      "sourceSha256": "sha256:0ba25f69d6905f2c637ba7b09aa3f1ea39b2f87fa3f9314d3fc4c295c4b52092",
      "outputSha256": "sha256:0ba25f69d6905f2c637ba7b09aa3f1ea39b2f87fa3f9314d3fc4c295c4b52092",
      "width": 1200,
      "height": 800,
      "encoding": "png-copy"
    },
    {
      "file": "tone-map.png",
      "meaning": "Tone-map stage diagnostic before the creative LUT.",
      "source": "images/tone-map.png",
      "sourceSha256": "sha256:0be426a3713547e6469d4452988f0fed36f5a6a71a48dcde9b3c62ea4589dd33",
      "outputSha256": "sha256:0be426a3713547e6469d4452988f0fed36f5a6a71a48dcde9b3c62ea4589dd33",
      "width": 1200,
      "height": 800,
      "encoding": "png-copy"
    },
    {
      "file": "lut.png",
      "meaning": "Creative LUT stage diagnostic.",
      "source": "images/lut.png",
      "sourceSha256": "sha256:5f461c04d8de208879e522a3df53ad28a9952993d22e7a9f943f986700846a61",
      "outputSha256": "sha256:5f461c04d8de208879e522a3df53ad28a9952993d22e7a9f943f986700846a61",
      "width": 1200,
      "height": 800,
      "encoding": "png-copy"
    }
  ],
  "limitations": [
    "The correctness bundle records a native r185 WebGPU backend, but named-adapter timestamp evidence is absent.",
    "The promoted percentile frame is a selection mask, not proof that histogram bin totals, prefix scan, or f64 oracle parity pass.",
    "Lifecycle stability remains unaccepted."
  ]
}