85 lines
2.9 KiB
C++
85 lines
2.9 KiB
C++
//============================================================================
|
|
// 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 2016 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
|
|
// Copyright 2016 UT-Battelle, LLC.
|
|
// Copyright 2016 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.
|
|
//============================================================================
|
|
#ifndef vtk_m_exec_arg_OutputIndex_h
|
|
#define vtk_m_exec_arg_OutputIndex_h
|
|
|
|
#include <vtkm/exec/arg/ExecutionSignatureTagBase.h>
|
|
#include <vtkm/exec/arg/Fetch.h>
|
|
|
|
namespace vtkm
|
|
{
|
|
namespace exec
|
|
{
|
|
namespace arg
|
|
{
|
|
|
|
/// \brief Aspect tag to use for getting the work index.
|
|
///
|
|
/// The \c AspectTagOutputIndex aspect tag causes the \c Fetch class to ignore
|
|
/// whatever data is in the associated execution object and return the index
|
|
/// of the output element.
|
|
///
|
|
struct AspectTagOutputIndex
|
|
{
|
|
};
|
|
|
|
/// \brief The \c ExecutionSignature tag to use to get the output index
|
|
///
|
|
/// When a worklet is dispatched, it broken into pieces defined by the output
|
|
/// domain and scheduled on independent threads. This tag in the \c
|
|
/// ExecutionSignature passes the index of the output element that the work
|
|
/// thread is currently working on. When a worklet has a scatter associated
|
|
/// with it, the output and output indices can be different. \c WorkletBase
|
|
/// contains a typedef that points to this class.
|
|
///
|
|
struct OutputIndex : vtkm::exec::arg::ExecutionSignatureTagBase
|
|
{
|
|
// The index does not really matter because the fetch is going to ignore it.
|
|
// However, it still has to point to a valid parameter in the
|
|
// ControlSignature because the templating is going to grab a fetch tag
|
|
// whether we use it or not. 1 should be guaranteed to be valid since you
|
|
// need at least one argument for the output domain.
|
|
static constexpr vtkm::IdComponent INDEX = 1;
|
|
using AspectTag = vtkm::exec::arg::AspectTagOutputIndex;
|
|
};
|
|
|
|
template <typename FetchTag, typename ThreadIndicesType, typename ExecObjectType>
|
|
struct Fetch<FetchTag, vtkm::exec::arg::AspectTagOutputIndex, ThreadIndicesType, ExecObjectType>
|
|
{
|
|
using ValueType = vtkm::Id;
|
|
|
|
VTKM_EXEC
|
|
vtkm::Id Load(const ThreadIndicesType& indices, const ExecObjectType&) const
|
|
{
|
|
return indices.GetOutputIndex();
|
|
}
|
|
|
|
VTKM_EXEC
|
|
void Store(const ThreadIndicesType&, const ExecObjectType&, const ValueType&) const
|
|
{
|
|
// Store is a no-op.
|
|
}
|
|
};
|
|
}
|
|
}
|
|
} // namespace vtkm::exec::arg
|
|
|
|
#endif //vtk_m_exec_arg_OutputIndex_h
|