// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause

#include "vtkNew.h"
#include "vtkOpenGLRenderWindow.h"
#include "vtkOutputWindow.h"
#include "vtkRenderer.h"

#include <sstream>

int main(int, char* /* argv */[])
{
  int result = 0;

  vtkNew<vtkRenderer> renderer;
  vtkNew<vtkRenderWindow> renderWindow;
  renderWindow->AddRenderer(renderer);

  std::ostringstream toString;

  toString << "Class: " << renderWindow->GetClassName();

  if (!renderWindow->SupportsOpenGL())
  {
    toString << " failed to find a working OpenGL\n\n";
    toString << vtkOpenGLRenderWindow::SafeDownCast(renderWindow)->GetOpenGLSupportMessage();
    result = 1;
  }
  else
  {
    toString << " succeeded in finding a working OpenGL\n\n";
  }

  renderWindow->Render();
  toString << renderWindow->ReportCapabilities();

  vtkOutputWindow::GetInstance()->PromptUserOff();
  vtkOutputWindow::GetInstance()->DisplayText(toString.str().c_str());
  vtkOutputWindow::GetInstance()->PromptUserOn();
#if defined(_WIN32)
  vtkOutputWindow::GetInstance()->DisplayText(
    "See the window titled 'vtkOutputWindow' for OpenGL capabilities found on your machine.");
#endif

  return result;
}