##============================================================================
##  Copyright (c) Kitware, Inc.
##  All rights reserved.
##  See LICENSE.txt for details.
##  This software is distributed WITHOUT ANY WARRANTY; without even
##  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
##  PURPOSE.  See the above copyright notice for more information.
##
##  Copyright 2014 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
##  Copyright 2014 UT-Battelle, LLC.
##  Copyright 2014 Los Alamos National Security.
##
##  Under the terms of Contract DE-NA0003525 with NTESS,
##  the U.S. Government retains certain rights in this software.
##
##  Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
##  Laboratory (LANL), the U.S. Government retains certain rights in
##  this software.
##============================================================================

set(headers
  TestingOpenGLInterop.h
  TestingTransferFancyHandles.h
  )
vtkm_declare_headers(${headers})


if(NOT TARGET GLUT::GLUT)
  find_package(GLUT QUIET)

  if(NOT TARGET GLUT::GLUT)
    if (VTKm_ENABLE_TESTING)
      message(WARNING
        "VTKm_ENABLE_GL_INTEROP is ON but could not find GLUT library. Building vtkm_interop but not testing it.")
    endif()
    return()
  endif()
endif()

set(unit_tests
  UnitTestTransferGLUT.cxx
  UnitTestFancyTransferGLUT.cxx
  )

vtkm_unit_tests(SOURCES ${unit_tests} LIBRARIES vtkm_interop GLUT::GLUT ALL_BACKENDS)
