mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-10-05 09:59:12 +00:00
a92ad22c73
Using GCC 9.2 the pre change vtkm::filter::Threshold would take 31.84sec to compile and use 1.1GB of memory. After these changes the filter takes 24.16sec to compile and uses 885MB of memory.
195 lines
5.9 KiB
C++
195 lines
5.9 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 vtkm_m_worklet_Threshold_h
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#define vtkm_m_worklet_Threshold_h
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#include <vtkm/worklet/CellDeepCopy.h>
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#include <vtkm/worklet/DispatcherMapField.h>
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#include <vtkm/worklet/DispatcherMapTopology.h>
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#include <vtkm/cont/Algorithm.h>
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#include <vtkm/cont/ArrayCopy.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/ArrayHandleIndex.h>
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#include <vtkm/cont/ArrayHandlePermutation.h>
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#include <vtkm/cont/CellSetPermutation.h>
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#include <vtkm/cont/DynamicCellSet.h>
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#include <vtkm/cont/Field.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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class Threshold
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{
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public:
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enum class FieldType
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{
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Point,
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Cell
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};
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template <typename UnaryPredicate>
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class ThresholdByPointField : public vtkm::worklet::WorkletVisitCellsWithPoints
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{
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public:
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using ControlSignature = void(CellSetIn cellset, FieldInPoint scalars, FieldOutCell passFlags);
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using ExecutionSignature = _3(_2, PointCount);
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VTKM_CONT
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ThresholdByPointField()
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: Predicate()
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{
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}
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VTKM_CONT
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explicit ThresholdByPointField(const UnaryPredicate& predicate)
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: Predicate(predicate)
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{
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}
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template <typename ScalarsVecType>
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VTKM_EXEC bool operator()(const ScalarsVecType& scalars, vtkm::Id count) const
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{
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bool pass = false;
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for (vtkm::IdComponent i = 0; i < count; ++i)
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{
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pass |= this->Predicate(scalars[i]);
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}
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return pass;
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}
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private:
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UnaryPredicate Predicate;
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};
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struct ThresholdCopy : public vtkm::worklet::WorkletMapField
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{
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using ControlSignature = void(FieldIn, FieldOut, WholeArrayIn);
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template <typename ScalarType, typename WholeFieldIn>
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VTKM_EXEC void operator()(vtkm::Id& index,
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ScalarType& output,
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const WholeFieldIn& inputField) const
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{
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output = inputField.Get(index);
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}
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};
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template <typename CellSetType, typename ValueType, typename StorageType, typename UnaryPredicate>
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vtkm::cont::CellSetPermutation<CellSetType> Run(
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const CellSetType& cellSet,
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const vtkm::cont::ArrayHandle<ValueType, StorageType>& field,
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const vtkm::cont::Field::Association fieldType,
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const UnaryPredicate& predicate)
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{
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using OutputType = vtkm::cont::CellSetPermutation<CellSetType>;
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switch (fieldType)
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{
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case vtkm::cont::Field::Association::POINTS:
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{
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using ThresholdWorklet = ThresholdByPointField<UnaryPredicate>;
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vtkm::cont::ArrayHandle<bool> passFlags;
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ThresholdWorklet worklet(predicate);
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DispatcherMapTopology<ThresholdWorklet> dispatcher(worklet);
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dispatcher.Invoke(cellSet, field, passFlags);
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vtkm::cont::Algorithm::CopyIf(vtkm::cont::ArrayHandleIndex(passFlags.GetNumberOfValues()),
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passFlags,
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this->ValidCellIds);
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break;
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}
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case vtkm::cont::Field::Association::CELL_SET:
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{
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vtkm::cont::Algorithm::CopyIf(vtkm::cont::ArrayHandleIndex(field.GetNumberOfValues()),
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field,
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this->ValidCellIds,
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predicate);
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break;
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}
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default:
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throw vtkm::cont::ErrorBadValue("Expecting point or cell field.");
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}
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return OutputType(this->ValidCellIds, cellSet);
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}
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template <typename FieldArrayType, typename UnaryPredicate>
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struct CallWorklet
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{
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vtkm::cont::DynamicCellSet& Output;
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vtkm::worklet::Threshold& Worklet;
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const FieldArrayType& Field;
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const vtkm::cont::Field::Association FieldType;
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const UnaryPredicate& Predicate;
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CallWorklet(vtkm::cont::DynamicCellSet& output,
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vtkm::worklet::Threshold& worklet,
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const FieldArrayType& field,
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const vtkm::cont::Field::Association fieldType,
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const UnaryPredicate& predicate)
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: Output(output)
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, Worklet(worklet)
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, Field(field)
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, FieldType(fieldType)
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, Predicate(predicate)
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{
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}
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template <typename CellSetType>
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void operator()(const CellSetType& cellSet) const
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{
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// Copy output to an explicit grid so that other units can guess what this is.
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this->Output = vtkm::worklet::CellDeepCopy::Run(
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this->Worklet.Run(cellSet, this->Field, this->FieldType, this->Predicate));
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}
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};
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template <typename CellSetList, typename ValueType, typename StorageType, typename UnaryPredicate>
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vtkm::cont::DynamicCellSet Run(const vtkm::cont::DynamicCellSetBase<CellSetList>& cellSet,
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const vtkm::cont::ArrayHandle<ValueType, StorageType>& field,
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const vtkm::cont::Field::Association fieldType,
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const UnaryPredicate& predicate)
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{
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using Worker = CallWorklet<vtkm::cont::ArrayHandle<ValueType, StorageType>, UnaryPredicate>;
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vtkm::cont::DynamicCellSet output;
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Worker worker(output, *this, field, fieldType, predicate);
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cellSet.CastAndCall(worker);
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return output;
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}
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template <typename ValueType, typename StorageTag>
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vtkm::cont::ArrayHandle<ValueType> ProcessCellField(
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const vtkm::cont::ArrayHandle<ValueType, StorageTag>& in) const
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{
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vtkm::cont::ArrayHandle<ValueType> result;
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DispatcherMapField<ThresholdCopy> dispatcher;
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dispatcher.Invoke(this->ValidCellIds, result, in);
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return result;
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}
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private:
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vtkm::cont::ArrayHandle<vtkm::Id> ValidCellIds;
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};
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}
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} // namespace vtkm::worklet
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#endif // vtkm_m_worklet_Threshold_h
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