FetchTagArrayDirectOut.h

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//============================================================================
//  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.
//============================================================================
#ifndef vtk_m_exec_arg_FetchTagArrayDirectOut_h
#define vtk_m_exec_arg_FetchTagArrayDirectOut_h
 
#include <vtkm/exec/arg/AspectTagDefault.h>
#include <vtkm/exec/arg/Fetch.h>
 
namespace vtkm
{
namespace exec
{
namespace arg
{
 
struct FetchTagArrayDirectOut
{
};
 
template <typename ExecObjectType>
struct Fetch<vtkm::exec::arg::FetchTagArrayDirectOut,
             vtkm::exec::arg::AspectTagDefault,
             ExecObjectType>
{
  VTKM_SUPPRESS_EXEC_WARNINGS
  template <typename ThreadIndicesType>
  VTKM_EXEC auto Load(const ThreadIndicesType&, const ExecObjectType&) const ->
    typename ExecObjectType::ValueType
  {
    // Load is a no-op for this fetch.
    using ValueType = typename ExecObjectType::ValueType;
    return ValueType();
  }
 
  VTKM_SUPPRESS_EXEC_WARNINGS
  template <typename ThreadIndicesType, typename T>
  VTKM_EXEC void Store(const ThreadIndicesType& indices,
                       const ExecObjectType& arrayPortal,
                       const T& value) const
  {
    using ValueType = typename ExecObjectType::ValueType;
    arrayPortal.Set(indices.GetOutputIndex(), static_cast<ValueType>(value));
  }
};
}
}
} // namespace vtkm::exec::arg
 
#endif //vtk_m_exec_arg_FetchTagArrayDirectOut_h