mattercontrol/appsettings.json

{
  "Agg": {
    "GraphicsMode": {
      "Color": 32,
      "Depth": 24,
      "FSAASamples": 8 
    },
    "ProviderTypes": {
      "DialogProvider": "MatterHackers.Agg.Platform.GtkFileDialogProvider, PlatformGtk"
    }
  },
  "MatterControl": {
    "Slicer": {
      "Debug": false
    }
  }
}