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https://gitlab.kitware.com/vtk/vtk-m
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c16236ce69
Most uses of ArrayRangeCompute just want to get the range of the data and probably don't have a particular device in mind. Thus, it is better to use a TryExecute internally use whatever devices are available. Note that when using TryExecute, the calling code is expected to be able to support all devices. That might not always be the case. Thus, I am experimenting a bit with how we incorporate this in a library. The advantage of having the code compiled in a library is that you only have to compile it once and the calling code does not need to worry about CUDA, etc. However, because ArrayRangeCompute is templated, we can only pre-compile some subset of array handle types. The most common are compiled into the code (matching all the predefined ArrayHandles as well as some special cases). If the code wants to use some other type, it has to include ArrayRangeCompute.hxx. The only place where this is necessary is a test that intentially trys to find the range on an uncommon type. If array portals were to support virtual methods, then we should be able to modify this code so that we could precompile for all array handle types.
179 lines
7.7 KiB
C++
179 lines
7.7 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 2016 Sandia Corporation.
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// Copyright 2016 UT-Battelle, LLC.
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// Copyright 2016 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_ArrayRangeCompute_h
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#define vtk_m_cont_ArrayRangeCompute_h
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#include <vtkm/Range.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/ArrayHandleCartesianProduct.h>
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#include <vtkm/cont/ArrayHandleCompositeVector.h>
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#include <vtkm/cont/ArrayHandleUniformPointCoordinates.h>
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#include <vtkm/cont/RuntimeDeviceTracker.h>
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namespace vtkm {
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namespace cont {
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/// \brief Compute the range of the data in an array handle.
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///
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/// Given an \c ArrayHandle, this function computes the range (min and max) of
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/// the values in the array. For arrays containing Vec values, the range is
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/// computed for each component.
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///
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///This method optionally takes a \c RuntimeDeviceTracker to control which
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///devices to try.
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///
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/// The result is returned in an \c ArrayHandle of \c Range objects. There is
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/// one value in the returned array for every component of the input's value
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/// type.
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///
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template<typename ArrayHandleType>
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VTKM_CONT
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vtkm::cont::ArrayHandle<vtkm::Range>
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ArrayRangeCompute(const ArrayHandleType &input,
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vtkm::cont::RuntimeDeviceTracker tracker =
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vtkm::cont::GetGlobalRuntimeDeviceTracker());
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// Precompiled versions of ArrayRangeCompute
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#define VTKM_ARRAY_RANGE_COMPUTE_EXPORT_T(T, Storage) \
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VTKM_CONT_EXPORT \
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VTKM_CONT \
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vtkm::cont::ArrayHandle<vtkm::Range> \
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ArrayRangeCompute(const vtkm::cont::ArrayHandle<T, Storage> &input, \
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vtkm::cont::RuntimeDeviceTracker tracker = \
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vtkm::cont::GetGlobalRuntimeDeviceTracker())
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#define VTKM_ARRAY_RANGE_COMPUTE_EXPORT_VEC(T, N, Storage) \
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VTKM_CONT_EXPORT \
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VTKM_CONT \
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vtkm::cont::ArrayHandle<vtkm::Range> \
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ArrayRangeCompute(const vtkm::cont::ArrayHandle<vtkm::Vec<T,N>, Storage> &input, \
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vtkm::cont::RuntimeDeviceTracker tracker = \
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vtkm::cont::GetGlobalRuntimeDeviceTracker())
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_T(char, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_T(vtkm::Int8, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_T(vtkm::UInt8, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_T(vtkm::Int16, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_T(vtkm::UInt16, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_T(vtkm::Int32, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_T(vtkm::UInt32, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_T(vtkm::Int64, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_T(vtkm::UInt64, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_T(vtkm::Float32, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_T(vtkm::Float64, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_VEC(vtkm::Int32, 2, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_VEC(vtkm::Int64, 2, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_VEC(vtkm::Float32, 2, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_VEC(vtkm::Float64, 2, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_VEC(vtkm::Int32, 3, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_VEC(vtkm::Int64, 3, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_VEC(vtkm::Float32, 3, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_VEC(vtkm::Float64, 3, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_VEC(char, 4, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_VEC(vtkm::Int8, 4, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_VEC(vtkm::UInt8, 4, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_VEC(vtkm::Float32, 4, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_VEC(vtkm::Float64, 4, vtkm::cont::StorageTagBasic);
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VTKM_ARRAY_RANGE_COMPUTE_EXPORT_VEC(
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vtkm::FloatDefault, 3,
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vtkm::cont::ArrayHandleUniformPointCoordinates::StorageTag);
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#undef VTKM_ARRAY_RANGE_COMPUTE_EXPORT_T
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#undef VTKM_ARRAY_RANGE_COMPUTE_EXPORT_VEC
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// Implementation of composite vectors
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VTKM_CONT_EXPORT
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VTKM_CONT
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vtkm::cont::ArrayHandle<vtkm::Range>
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ArrayRangeCompute(const vtkm::cont::ArrayHandle<
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vtkm::Vec<vtkm::Float32,3>,
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typename vtkm::cont::ArrayHandleCompositeVector<
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vtkm::Vec<vtkm::Float32,3>(
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vtkm::cont::ArrayHandle<vtkm::Float32>,
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vtkm::cont::ArrayHandle<vtkm::Float32>,
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vtkm::cont::ArrayHandle<vtkm::Float32>)
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>::StorageTag
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> &input,
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vtkm::cont::RuntimeDeviceTracker tracker =
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vtkm::cont::GetGlobalRuntimeDeviceTracker());
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VTKM_CONT_EXPORT
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VTKM_CONT
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vtkm::cont::ArrayHandle<vtkm::Range>
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ArrayRangeCompute(const vtkm::cont::ArrayHandle<
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vtkm::Vec<vtkm::Float64,3>,
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typename vtkm::cont::ArrayHandleCompositeVector<
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vtkm::Vec<vtkm::Float64,3>(
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vtkm::cont::ArrayHandle<vtkm::Float64>,
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vtkm::cont::ArrayHandle<vtkm::Float64>,
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vtkm::cont::ArrayHandle<vtkm::Float64>)
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>::StorageTag
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> &input,
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vtkm::cont::RuntimeDeviceTracker tracker =
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vtkm::cont::GetGlobalRuntimeDeviceTracker());
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// Implementation of cartesian products
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template<typename T,
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typename ArrayType1,
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typename ArrayType2,
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typename ArrayType3>
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VTKM_CONT
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inline
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vtkm::cont::ArrayHandle<vtkm::Range>
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ArrayRangeCompute(const vtkm::cont::ArrayHandle<T,
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vtkm::cont::internal::StorageTagCartesianProduct<
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ArrayType1,ArrayType2,ArrayType3
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> > &input,
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vtkm::cont::RuntimeDeviceTracker tracker =
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vtkm::cont::GetGlobalRuntimeDeviceTracker())
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{
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vtkm::cont::ArrayHandle<vtkm::Range> result;
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result.Allocate(3);
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vtkm::cont::ArrayHandle<vtkm::Range> componentRangeArray;
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vtkm::Range componentRange;
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ArrayType1 firstArray = input.GetStorage().GetFirstArray();
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componentRangeArray = vtkm::cont::ArrayRangeCompute(firstArray, tracker);
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componentRange = componentRangeArray.GetPortalConstControl().Get(0);
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result.GetPortalControl().Set(0, componentRange);
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ArrayType2 secondArray = input.GetStorage().GetSecondArray();
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componentRangeArray = vtkm::cont::ArrayRangeCompute(secondArray, tracker);
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componentRange = componentRangeArray.GetPortalConstControl().Get(0);
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result.GetPortalControl().Set(1, componentRange);
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ArrayType3 thirdArray = input.GetStorage().GetThirdArray();
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componentRangeArray = vtkm::cont::ArrayRangeCompute(thirdArray, tracker);
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componentRange = componentRangeArray.GetPortalConstControl().Get(0);
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result.GetPortalControl().Set(2, componentRange);
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return result;
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}
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}
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} // namespace vtkm::cont
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#endif //vtk_m_cont_ArrayRangeCompute_h
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