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https://gitlab.kitware.com/vtk/vtk-m
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a1ea509f87
This is required for vtkm::worklet::Invoker to launch worklets with a non default scatter type.
63 lines
2.0 KiB
C++
63 lines
2.0 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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//
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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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#ifndef vtk_m_worklet_ScatterIdentity_h
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#define vtk_m_worklet_ScatterIdentity_h
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#include <vtkm/cont/ArrayHandleConstant.h>
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#include <vtkm/cont/ArrayHandleIndex.h>
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#include <vtkm/worklet/internal/ScatterBase.h>
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namespace vtkm
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{
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namespace worklet
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{
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/// \brief A scatter that maps input directly to output.
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///
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/// The \c Scatter classes are responsible for defining how much output is
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/// generated based on some sized input. \c ScatterIdentity establishes a 1 to
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/// 1 mapping from input to output (and vice versa). That is, every input
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/// element generates one output element associated with it. This is the
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/// default for basic maps.
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///
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struct ScatterIdentity : internal::ScatterBase
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{
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using OutputToInputMapType = vtkm::cont::ArrayHandleIndex;
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VTKM_CONT
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OutputToInputMapType GetOutputToInputMap(vtkm::Id inputRange) const
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{
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return OutputToInputMapType(inputRange);
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}
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VTKM_CONT
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OutputToInputMapType GetOutputToInputMap(vtkm::Id3 inputRange) const
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{
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return this->GetOutputToInputMap(inputRange[0] * inputRange[1] * inputRange[2]);
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}
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using VisitArrayType = vtkm::cont::ArrayHandleConstant<vtkm::IdComponent>;
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VTKM_CONT
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VisitArrayType GetVisitArray(vtkm::Id inputRange) const { return VisitArrayType(0, inputRange); }
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VTKM_CONT
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VisitArrayType GetVisitArray(vtkm::Id3 inputRange) const
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{
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return this->GetVisitArray(inputRange[0] * inputRange[1] * inputRange[2]);
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}
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template <typename RangeType>
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VTKM_CONT RangeType GetOutputRange(RangeType inputRange) const
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{
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return inputRange;
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}
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};
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}
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} // namespace vtkm::worklet
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#endif //vtk_m_worklet_ScatterIdentity_h
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