mergeRPG_client/assets/materials/CircleMask.mtl

{
  "__type__": "cc.Material",
  "_name": "New Material",
  "_objFlags": 0,
  "_native": "",
  "_effectAsset": {
    "__uuid__": "4ecfd69b-47e1-4518-ad03-bd83e1cd2b70"
  },
  "_techniqueIndex": 0,
  "_techniqueData": {
    "0": {
      "defines": {
        "USE_TEXTURE": true
      }
    }
  }
}