{
  "title": "Shot-Blasted Aluminum",
  "origin": "AI-generated with built-in image_gen; prepared by Locker3d",
  "date": "2026-11-09",
  "resolution": [
    1024,
    1024
  ],
  "license": "CC0-1.0, following the official Locker3d texture policy",
  "prompt": "Use case: photorealistic-natural. Asset: square physically plausible PBR base color texture of matte shot-blasted bare aluminum for small industrial hardware. Fill the frame with one flat continuous 18 cm square sample. True microstructure: a densely overlapping field of extremely shallow, nearly round peening impressions with soft broken rims and subtle fine isotropic stipple. Most pits about 0.3\u20131 mm at this illustrative scale. Each pit is a small dimple in a relatively smooth silvery metal field, with tiny natural variations of size and spacing, no visible regular grid or repetitive cells. A restrained medium light neutral cool gray metal base color, almost even value, subtle pit detail without black crater outlines. Do not make a coating, orange peel bumps, embossed hammered sheet, coarse cast lumps, crystalline galvanized patches, long scratches, brushed streaks, oxidation, paint, stains, dust or gouges. Perpendicular orthographic flat full-bleed macro photograph, neutral diffuse cross-polarized studio illumination, no cast shadows or strong directional shadows, specular highlights, reflections, broad gradients, object shape, perspective, seams, borders, watermark or text. Keep edges consistent for a low-discontinuity repeat. Square 1024 pixels or larger.",
  "maps": [
    {
      "file": "textures/albedo.png",
      "colorSpace": "sRGB",
      "bytes": 1717549,
      "sha256": "9a72b29ae6fbbc0928cc6230e8e312f0216f1c9ad042db41b0d5b931c65b52b9"
    },
    {
      "file": "textures/normal-gl.png",
      "colorSpace": "Non-Color",
      "bytes": 1715593,
      "sha256": "dfc8aa72469944d5b3606393fae1682207c60abc7a0fff41eb1f25e1c2a220c9"
    },
    {
      "file": "textures/roughness.png",
      "colorSpace": "Non-Color",
      "bytes": 320417,
      "sha256": "9f460ef84d19ebb9bbd59c5a97732eb480836ee48ca0f34b871836eca45540be"
    }
  ],
  "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": 2.428,
    "topBottomMeanAbsRGB": 2.027
  },
  "suggestedTileMeters": 0.18,
  "metallicConstant": 1,
  "normalStrength": 0.58,
  "beforeEdgeDiagnostics": {
    "leftRightMeanAbsRGB": 8.695,
    "topBottomMeanAbsRGB": 8.157
  }
}