//============================================================================
//  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 Sandia Corporation.
//  Copyright 2014 UT-Battelle, LLC.
//  Copyright 2014 Los Alamos National Security.
//
//  Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
//  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.
//============================================================================
#ifndef vtk_m_cuda_opengl_SetOpenGLDevice_h
#define vtk_m_cuda_opengl_SetOpenGLDevice_h

#include <cuda.h>
#include <cuda_gl_interop.h>

#include <vtkm/cont/ErrorExecution.h>

namespace vtkm{
namespace opengl{
namespace cuda{

static void SetCudaGLDevice(int id)
{
//With Cuda 5.0 cudaGLSetGLDevice is deprecated and shouldn't be needed
//anymore. But it seems that macs still require you to call it or we
//segfault
#ifdef __APPLE__
  cudaError_t cError = cudaGLSetGLDevice(id);
#else
  cudaError_t cError = cudaSetDevice(id);
#endif
  if(cError != cudaSuccess)
    {
    std::string cuda_error_msg("Unable to setup cuda/opengl interop. Error: ");
    cuda_error_msg.append(cudaGetErrorString(cError));
    throw vtkm::cont::ErrorExecution(cuda_error_msg);
    }
}


}
}
} //namespace

#endif //vtk_m_cuda_opengl_SetOpenGLDevice_h