{
  "profiles": {
    "Viewer": {
      "commandName": "Project",
      "commandLineArgs": "--data=$(SolutionDir)work"
    }
  }
}

{
  "profiles": {
    "Viewer": {
      "commandName": "Project",
      "commandLineArgs": "--data=$(SolutionDir)work",
	  "nativeDebugging": true
    }
  }
}

Enable native debugging for the Viewer project
Enable native debugging for the Viewer project

This is necessary to see trace messages from the D3D debug layer.