 {
   cudaStream_t stream;
   GLFWwindow* win;
-  FieldFormat format = FieldFormat::UInt8;
-  uint32_t nx = 128;
-  uint32_t ny = 128;
-  uint32_t nz = 128;
+  const char* path = nullptr;
   int deviceIndex = 0;
 
   for (int i = 1; i < argc; i++) {

      }
      i++;
    }
  }



using namespace ComputeStuff::MC;

namespace {

  FieldFormat format = FieldFormat::UInt8;
  uint32_t nx = 128;
  uint32_t ny = 128;
  uint32_t nz = 128;

  std::vector<char> scalarField_host;

  void onGLFWError(int error, const char* what)
  {
