pinball/assets/_Game/Materials/mat_ball_buff.mtl

{
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  "_defines": [
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  "_states": [
    {
      "rasterizerState": {},
      "depthStencilState": {},
      "blendState": {
        "targets": [
          {}
        ]
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  ],
  "_props": [
    {
      "mainTexture": {
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        "__type__": "cc.Color",
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}