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https://gitlab.kitware.com/vtk/vtk-m
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42aba97728
Previously, all arrays passed to worklets were designated as either input or output. No in-place operation was permitted. This change adds the FieldInOut tag for ControlSignature in both WorkletMapField and WorkletMapTopology that allows you to read and write from the same array.
69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//
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// Copyright 2015 Sandia Corporation.
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// Copyright 2015 UT-Battelle, LLC.
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// Copyright 2015 Los Alamos National Security.
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//
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// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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// the U.S. Government retains certain rights in this software.
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//
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// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
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// Laboratory (LANL), the U.S. Government retains certain rights in
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// this software.
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//============================================================================
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#ifndef vtk_m_cont_arg_TransportTagArrayInOut_h
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#define vtk_m_cont_arg_TransportTagArrayInOut_h
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#include <vtkm/Types.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/arg/Transport.h>
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namespace vtkm {
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namespace cont {
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namespace arg {
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/// \brief \c Transport tag for in-place arrays.
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///
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/// \c TransportTagArrayInOut is a tag used with the \c Transport class to
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/// transport \c ArrayHandle objects for data that is both input and output
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/// (that is, in place modification of array data).
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///
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struct TransportTagArrayInOut { };
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template<typename ContObjectType, typename Device>
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struct Transport<vtkm::cont::arg::TransportTagArrayInOut, ContObjectType, Device>
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{
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// If you get a compile error here, it means you tried to use an object that
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// is not an array handle as an argument that is expected to be one.
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VTKM_IS_ARRAY_HANDLE(ContObjectType);
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typedef typename ContObjectType::template ExecutionTypes<Device>::Portal
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ExecObjectType;
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VTKM_CONT_EXPORT
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ExecObjectType operator()(ContObjectType object, vtkm::Id size) const
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{
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if (object.GetNumberOfValues() != size)
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{
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throw vtkm::cont::ErrorControlBadValue(
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"Input array to worklet invocation the wrong size.");
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}
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return object.PrepareForInPlace(Device());
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}
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};
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}
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}
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} // namespace vtkm::cont::arg
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#endif //vtk_m_cont_arg_TransportTagArrayInOut_h
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