{
  "title": "Crushed Eggshell Lacquer",
  "origin": "AI-generated with built-in image_gen; prepared by Locker3d",
  "date": "2026-11-07",
  "resolution": [
    1024,
    1024
  ],
  "license": "CC0-1.0, following the official Locker3d texture policy",
  "prompt": "Flat decorative Asian-style eggshell-inlay lacquer panel, irregular tiny broken ivory eggshell fragments with exceptionally fine black hairline gaps within each cluster. Larger black lacquer rivers separate differently sized islands of fragments, matte-to-satin look, flush surface, no joints or tile grid, no intact eggs, no large stone chips. 30 cm square, cohesive composition with no single island. Photorealistic square diffuse/albedo texture asset for a PBR material library, perpendicular orthographic view of a continuous flat surface, full bleed, no object, scene, border, scale ruler, text or watermark. Neutral uniformly diffuse cross-polarized illumination, no cast shadows, AO, directional shading, vignette, strong glints or reflections. Preserve intrinsic detail at consistent scale. Edges intended to tile, avoid a single dominant mark and broad lightness gradients. 1024 square or higher. This is a visual material study.",
  "maps": [
    {
      "file": "textures/albedo.png",
      "colorSpace": "sRGB",
      "bytes": 2431558,
      "sha256": "de3c23a6cf916a0695fd3f9246331e98bbdae23ca66d8da4eeb396aa24202f09"
    },
    {
      "file": "textures/normal-gl.png",
      "colorSpace": "Non-Color",
      "bytes": 1175836,
      "sha256": "2afe190c8c526eaa2c84033b9b3ba94bca0e6daaa3c77cf23f46a26d731ded19"
    },
    {
      "file": "textures/roughness.png",
      "colorSpace": "Non-Color",
      "bytes": 315210,
      "sha256": "773cb014cff9a05895d7515a2ff7d4bed10ef58b96547c88da8f65d95eb130e4"
    }
  ],
  "method": "Albedo: periodic-plus-smooth decomposition via FFT Poisson solve to reduce edge mismatch. Normal: periodic multi-scale Gaussian bands, robust contrast normalization, material-specific cavity/joint masks and central-difference tangent-space gradients. Roughness: material preset plus local detail and joint variation. All data channels are estimates, not measured surface response.",
  "limits": "Not a photoscan. No AO, displacement or metallic maps. Generated images are not guaranteed seamless; inspect repetition at your target scale. No measured physical scale; demo scale is illustrative.",
  "edgeDiagnostics": {
    "leftRightMeanAbsRGB": 12.295,
    "topBottomMeanAbsRGB": 16.073
  },
  "suggestedTileMeters": 0.3,
  "metallicConstant": 0,
  "normalStrength": 0.46,
  "beforeEdgeDiagnostics": {
    "leftRightMeanAbsRGB": 32.225,
    "topBottomMeanAbsRGB": 46.494
  }
}