6f0edbec24
The new version of vtkm::Tuple should be faster. It also gives us more control over the implementation and can provide some VTK-m specific things.
705 lines
20 KiB
C++
705 lines
20 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_ArrayHandleCompositeVector_h
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#define vtk_m_ArrayHandleCompositeVector_h
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/Deprecated.h>
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#include <vtkm/StaticAssert.h>
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#include <vtkm/Tuple.h>
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#include <vtkm/VecTraits.h>
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#include <vtkm/internal/brigand.hpp>
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#include <vtkmstd/integer_sequence.h>
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#include <type_traits>
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namespace vtkm
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{
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namespace cont
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{
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namespace internal
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{
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namespace compvec
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{
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// AllAreArrayHandles: ---------------------------------------------------------
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// Ensures that all types in ArrayHandlesT... are subclasses of ArrayHandleBase
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template <typename... ArrayHandlesT>
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struct AllAreArrayHandlesImpl;
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template <typename Head, typename... Tail>
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struct AllAreArrayHandlesImpl<Head, Tail...>
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{
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private:
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using Next = AllAreArrayHandlesImpl<Tail...>;
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constexpr static bool HeadValid = std::is_base_of<ArrayHandleBase, Head>::value;
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public:
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constexpr static bool Value = HeadValid && Next::Value;
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};
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template <typename Head>
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struct AllAreArrayHandlesImpl<Head>
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{
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constexpr static bool Value = std::is_base_of<ArrayHandleBase, Head>::value;
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};
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template <typename... ArrayHandleTs>
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struct AllAreArrayHandles
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{
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constexpr static bool Value = AllAreArrayHandlesImpl<ArrayHandleTs...>::Value;
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};
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// GetValueType: ---------------------------------------------------------------
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// Determines the output `ValueType` of the set of `ArrayHandle` objects. For example, if the input
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// set contains 3 types with `vtkm::Float32` ValueTypes, then the ValueType defined here will be
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// `vtkm::Vec<Float32, 3>`. This also validates that all members have the same `ValueType`.
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template <typename ExpectedValueType, typename ArrayType>
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constexpr bool CheckValueType()
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{
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VTKM_STATIC_ASSERT_MSG((std::is_same<ExpectedValueType, typename ArrayType::ValueType>::value),
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"ArrayHandleCompositeVector must be built from "
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"ArrayHandles with the same ValueTypes.");
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return std::is_same<ExpectedValueType, typename ArrayType::ValueType>::value;
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}
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template <typename ArrayType0, typename... ArrayTypes>
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struct GetValueType
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{
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static constexpr vtkm::IdComponent COUNT =
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static_cast<vtkm::IdComponent>(sizeof...(ArrayTypes)) + 1;
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using ComponentType = typename ArrayType0::ValueType;
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static constexpr std::array<bool, sizeof...(ArrayTypes) + 1> ValueCheck{
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{ true, CheckValueType<ComponentType, ArrayTypes>()... }
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};
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using ValueType = vtkm::Vec<ComponentType, COUNT>;
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};
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// Special case for only one component
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template <typename ArrayType>
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struct GetValueType<ArrayType>
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{
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static constexpr vtkm::IdComponent COUNT = 1;
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using ComponentType = typename ArrayType::ValueType;
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using ValueType = typename ArrayType::ValueType;
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};
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// -----------------------------------------------------------------------------
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// Functors to access Storage methods. This is used with vtkm::Tuple's
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// ForEach and Transform methods.
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struct WritePortal
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{
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template <typename ArrayHandle>
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typename ArrayHandle::WritePortalType operator()(const ArrayHandle& array) const
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{
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return array.WritePortal();
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}
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};
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struct ReadPortal
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{
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template <typename ArrayHandle>
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typename ArrayHandle::ReadPortalType operator()(const ArrayHandle& array) const
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{
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return array.ReadPortal();
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}
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};
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struct Allocate
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{
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vtkm::Id NumValues;
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VTKM_CONT Allocate(vtkm::Id numValues)
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: NumValues(numValues)
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{
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}
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template <typename Array>
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VTKM_CONT void operator()(Array& array)
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{
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array.Allocate(this->NumValues);
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}
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};
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struct Shrink
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{
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vtkm::Id NumValues;
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VTKM_CONT Shrink(vtkm::Id numValues)
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: NumValues(numValues)
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{
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}
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template <typename Array>
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VTKM_CONT void operator()(Array& array)
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{
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array.Shrink(this->NumValues);
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}
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};
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struct ReleaseResources
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{
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template <typename Array>
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VTKM_CONT void operator()(Array& array)
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{
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array.ReleaseResources();
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}
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};
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// -----------------------------------------------------------------------------
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// Functors to access ArrayTransfer methods. This is used with vtkm::Tuple's
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// ForEach and Transform methods.
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template <typename Device>
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struct PrepareForInput
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{
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vtkm::cont::Token& Token;
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VTKM_CONT PrepareForInput(vtkm::cont::Token& token)
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: Token(token)
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{
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}
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template <typename Array>
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VTKM_CONT typename Array::template ExecutionTypes<Device>::PortalConst operator()(
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const Array& array)
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{
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return array.PrepareForInput(Device{}, this->Token);
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}
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};
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template <typename Device>
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struct PrepareForInPlace
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{
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vtkm::cont::Token& Token;
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VTKM_CONT PrepareForInPlace(vtkm::cont::Token& token)
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: Token(token)
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{
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}
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template <typename Array>
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VTKM_CONT typename Array::template ExecutionTypes<Device>::Portal operator()(Array& array)
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{
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return array.PrepareForInPlace(Device{}, this->Token);
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}
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};
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template <typename Device>
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struct PrepareForOutput
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{
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vtkm::Id NumValues;
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vtkm::cont::Token& Token;
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VTKM_CONT PrepareForOutput(vtkm::Id numValues, vtkm::cont::Token& token)
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: NumValues(numValues)
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, Token(token)
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{
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}
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template <typename Array>
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VTKM_CONT typename Array::template ExecutionTypes<Device>::Portal operator()(Array& array)
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{
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return array.PrepareForOutput(this->NumValues, Device{}, this->Token);
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}
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};
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struct ReleaseResourcesExecution
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{
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template <typename Array>
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VTKM_CONT void operator()(Array& array)
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{
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array.ReleaseResourcesExecution();
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}
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};
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// ArraySizeValidator: ---------------------------------------------------------
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// Call Exec(ArrayTuple, NumValues) to ensure that all arrays in the tuple have
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// the specified number of values.
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template <std::size_t Index, std::size_t Count, typename TupleType>
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struct ArraySizeValidatorImpl
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{
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using Next = ArraySizeValidatorImpl<Index + 1, Count, TupleType>;
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VTKM_CONT
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static bool Exec(const TupleType& tuple, vtkm::Id numVals)
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{
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return vtkm::Get<Index>(tuple).GetNumberOfValues() == numVals && Next::Exec(tuple, numVals);
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}
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};
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template <std::size_t Index, typename TupleType>
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struct ArraySizeValidatorImpl<Index, Index, TupleType>
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{
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VTKM_CONT
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static bool Exec(const TupleType&, vtkm::Id) { return true; }
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};
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template <typename TupleType>
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struct ArraySizeValidator
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{
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VTKM_CONT
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static bool Exec(const TupleType& tuple, vtkm::Id numVals)
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{
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return ArraySizeValidatorImpl<0, vtkm::TupleSize<TupleType>::value, TupleType>::Exec(tuple,
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numVals);
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}
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};
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template <typename... PortalList>
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using AllPortalsAreWritable =
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typename brigand::all<brigand::list<PortalList...>,
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brigand::bind<vtkm::internal::PortalSupportsSets, brigand::_1>>::type;
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// GetFromPortals: -------------------------------------------------------------
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// Given a set of array portals as arguments, returns a Vec comprising the values
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// at the provided index.
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VTKM_SUPPRESS_EXEC_WARNINGS
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template <typename... Portals>
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VTKM_EXEC_CONT typename GetValueType<Portals...>::ValueType GetFromPortals(
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vtkm::Id index,
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const Portals&... portals)
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{
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return { portals.Get(index)... };
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}
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// SetToPortals: ---------------------------------------------------------------
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// Given a Vec-like object, and index, and a set of array portals, sets each of
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// the portals to the respective component of the Vec.
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VTKM_SUPPRESS_EXEC_WARNINGS
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template <typename ValueType, vtkm::IdComponent... I, typename... Portals>
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VTKM_EXEC_CONT void SetToPortalsImpl(vtkm::Id index,
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const ValueType& value,
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vtkmstd::integer_sequence<vtkm::IdComponent, I...>,
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const Portals&... portals)
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{
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using Traits = vtkm::VecTraits<ValueType>;
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(void)std::initializer_list<bool>{ (portals.Set(index, Traits::GetComponent(value, I)),
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false)... };
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}
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VTKM_SUPPRESS_EXEC_WARNINGS
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template <typename ValueType, typename... Portals>
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VTKM_EXEC_CONT void SetToPortals(vtkm::Id index, const ValueType& value, const Portals&... portals)
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{
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SetToPortalsImpl(
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index,
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value,
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vtkmstd::make_integer_sequence<vtkm::IdComponent, vtkm::IdComponent(sizeof...(Portals))>{},
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portals...);
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}
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} // end namespace compvec
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template <typename... PortalTypes>
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class VTKM_ALWAYS_EXPORT ArrayPortalCompositeVector
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{
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using Writable = compvec::AllPortalsAreWritable<PortalTypes...>;
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using TupleType = vtkm::Tuple<PortalTypes...>;
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TupleType Portals;
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public:
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using ValueType = typename compvec::GetValueType<PortalTypes...>::ValueType;
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VTKM_EXEC_CONT
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ArrayPortalCompositeVector() {}
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VTKM_CONT
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ArrayPortalCompositeVector(const PortalTypes&... portals)
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: Portals(portals...)
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{
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}
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VTKM_CONT
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ArrayPortalCompositeVector(const TupleType& portals)
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: Portals(portals)
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{
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}
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VTKM_EXEC_CONT
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vtkm::Id GetNumberOfValues() const { return vtkm::Get<0>(this->Portals).GetNumberOfValues(); }
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VTKM_EXEC_CONT
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ValueType Get(vtkm::Id index) const
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{
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return this->Portals.Apply(compvec::GetFromPortals<PortalTypes...>, index);
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}
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template <typename Writable_ = Writable,
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typename = typename std::enable_if<Writable_::value>::type>
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VTKM_EXEC_CONT void Set(vtkm::Id index, const ValueType& value) const
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{
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this->Portals.Apply(compvec::SetToPortals<ValueType, PortalTypes...>, index, value);
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}
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};
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} // namespace internal
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template <typename... StorageTags>
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struct VTKM_ALWAYS_EXPORT StorageTagCompositeVec
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{
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};
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namespace internal
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{
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template <typename... ArrayTs>
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struct CompositeVectorTraits
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{
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// Need to check this here, since this traits struct is used in the
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// ArrayHandleCompositeVector superclass definition before any other
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// static_asserts could be used.
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VTKM_STATIC_ASSERT_MSG(compvec::AllAreArrayHandles<ArrayTs...>::Value,
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"Template parameters for ArrayHandleCompositeVector "
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"must be a list of ArrayHandle types.");
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using ValueType = typename compvec::GetValueType<ArrayTs...>::ValueType;
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using StorageTag = vtkm::cont::StorageTagCompositeVec<typename ArrayTs::StorageTag...>;
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using StorageType = Storage<ValueType, StorageTag>;
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using Superclass = ArrayHandle<ValueType, StorageTag>;
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};
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template <typename T, typename... StorageTags>
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class Storage<vtkm::Vec<T, static_cast<vtkm::IdComponent>(sizeof...(StorageTags))>,
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vtkm::cont::StorageTagCompositeVec<StorageTags...>>
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{
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using ArrayTuple = vtkm::Tuple<vtkm::cont::ArrayHandle<T, StorageTags>...>;
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ArrayTuple Arrays;
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bool Valid;
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public:
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using ValueType = vtkm::Vec<T, static_cast<vtkm::IdComponent>(sizeof...(StorageTags))>;
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using PortalType = ArrayPortalCompositeVector<
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typename vtkm::cont::ArrayHandle<T, StorageTags>::WritePortalType...>;
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using PortalConstType =
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ArrayPortalCompositeVector<typename vtkm::cont::ArrayHandle<T, StorageTags>::ReadPortalType...>;
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VTKM_CONT
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Storage()
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: Valid(false)
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{
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}
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template <typename... ArrayTypes>
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VTKM_CONT Storage(const ArrayTypes&... arrays)
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: Arrays(arrays...)
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, Valid(true)
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{
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using SizeValidator = compvec::ArraySizeValidator<ArrayTuple>;
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if (!SizeValidator::Exec(this->Arrays, this->GetNumberOfValues()))
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{
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throw ErrorBadValue("All arrays must have the same number of values.");
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}
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}
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VTKM_CONT
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PortalType GetPortal()
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{
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VTKM_ASSERT(this->Valid);
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return this->Arrays.Transform(compvec::WritePortal{});
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}
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void TypeCheck(int) const;
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VTKM_CONT
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PortalConstType GetPortalConst() const
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{
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VTKM_ASSERT(this->Valid);
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this->Arrays.Transform(compvec::ReadPortal{});
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return this->Arrays.Transform(compvec::ReadPortal{});
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}
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VTKM_CONT
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vtkm::Id GetNumberOfValues() const
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{
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VTKM_ASSERT(this->Valid);
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return vtkm::Get<0>(this->Arrays).GetNumberOfValues();
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}
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VTKM_CONT
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void Allocate(vtkm::Id numValues)
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{
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VTKM_ASSERT(this->Valid);
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this->Arrays.ForEach(compvec::Allocate{ numValues });
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}
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VTKM_CONT
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void Shrink(vtkm::Id numValues)
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{
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VTKM_ASSERT(this->Valid);
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this->Arrays.ForEach(compvec::Shrink{ numValues });
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}
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VTKM_CONT
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void ReleaseResources()
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{
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VTKM_ASSERT(this->Valid);
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this->Arrays.ForEach(compvec::ReleaseResources{});
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}
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VTKM_CONT
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const ArrayTuple& GetArrayTuple() const
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{
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VTKM_ASSERT(this->Valid);
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return this->Arrays;
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}
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VTKM_CONT
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ArrayTuple& GetArrayTuple()
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{
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VTKM_ASSERT(this->Valid);
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return this->Arrays;
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}
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};
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// Special case for single component. Just defer to the original storage.
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template <typename T, typename StorageTag>
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class Storage<T, vtkm::cont::StorageTagCompositeVec<StorageTag>> : public Storage<T, StorageTag>
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{
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using ArrayType = vtkm::cont::ArrayHandle<T, StorageTag>;
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using TupleType = vtkm::Tuple<ArrayType>;
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public:
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Storage() = default;
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Storage(const ArrayType& array)
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: Storage<T, StorageTag>(array.GetStorage())
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{
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}
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VTKM_CONT
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const TupleType GetArrayTuple() const { return TupleType(ArrayType(this->GetStoragea())); }
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};
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template <typename T, typename... StorageTags, typename DeviceTag>
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class ArrayTransfer<vtkm::Vec<T, static_cast<vtkm::IdComponent>(sizeof...(StorageTags))>,
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vtkm::cont::StorageTagCompositeVec<StorageTags...>,
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DeviceTag>
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{
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VTKM_IS_DEVICE_ADAPTER_TAG(DeviceTag);
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using ArrayTuple = vtkm::Tuple<vtkm::cont::ArrayHandle<T, StorageTags>...>;
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public:
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using ValueType = vtkm::Vec<T, static_cast<vtkm::IdComponent>(sizeof...(StorageTags))>;
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private:
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using StorageTag = vtkm::cont::StorageTagCompositeVec<StorageTags...>;
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using StorageType = internal::Storage<ValueType, StorageTag>;
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StorageType* Storage;
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public:
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using PortalControl = typename StorageType::PortalType;
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using PortalConstControl = typename StorageType::PortalConstType;
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using PortalExecution = ArrayPortalCompositeVector<
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typename vtkm::cont::ArrayHandle<T,
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StorageTags>::template ExecutionTypes<DeviceTag>::Portal...>;
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using PortalConstExecution =
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ArrayPortalCompositeVector<typename vtkm::cont::ArrayHandle<T, StorageTags>::
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template ExecutionTypes<DeviceTag>::PortalConst...>;
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VTKM_CONT
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ArrayTransfer(StorageType* storage)
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: Storage(storage)
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{
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}
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VTKM_CONT
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vtkm::Id GetNumberOfValues() const { return this->Storage->GetNumberOfValues(); }
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VTKM_CONT
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PortalConstExecution PrepareForInput(bool vtkmNotUsed(updateData), vtkm::cont::Token& token) const
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{
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return this->GetArrayTuple().Transform(compvec::PrepareForInput<DeviceTag>{ token });
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}
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VTKM_CONT
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PortalExecution PrepareForInPlace(bool vtkmNotUsed(updateData), vtkm::cont::Token& token)
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{
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return this->GetArrayTuple().Transform(compvec::PrepareForInPlace<DeviceTag>{ token });
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}
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VTKM_CONT
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PortalExecution PrepareForOutput(vtkm::Id numValues, vtkm::cont::Token& token)
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{
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return this->GetArrayTuple().Transform(
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compvec::PrepareForOutput<DeviceTag>{ numValues, token });
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}
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VTKM_CONT
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void RetrieveOutputData(StorageType* vtkmNotUsed(storage)) const
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{
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// Implementation of this method should be unnecessary. The internal
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// array handle should automatically retrieve the output data as
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// necessary.
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}
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VTKM_CONT
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void Shrink(vtkm::Id numValues) { this->GetArrayTuple().ForEach(compvec::Shrink{ numValues }); }
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VTKM_CONT
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|
void ReleaseResources() { this->GetArrayTuple().ForEach(compvec::ReleaseResourcesExecution{}); }
|
|
|
|
VTKM_CONT
|
|
const ArrayTuple& GetArrayTuple() const { return this->Storage->GetArrayTuple(); }
|
|
ArrayTuple& GetArrayTuple() { return this->Storage->GetArrayTuple(); }
|
|
};
|
|
|
|
} // namespace internal
|
|
|
|
/// \brief An \c ArrayHandle that combines components from other arrays.
|
|
///
|
|
/// \c ArrayHandleCompositeVector is a specialization of \c ArrayHandle that
|
|
/// derives its content from other arrays. It takes any number of
|
|
/// single-component \c ArrayHandle objects and mimics an array that contains
|
|
/// vectors with components that come from these delegate arrays.
|
|
///
|
|
/// The easiest way to create and type an \c ArrayHandleCompositeVector is
|
|
/// to use the \c make_ArrayHandleCompositeVector functions.
|
|
///
|
|
/// The \c ArrayHandleExtractComponent class may be helpful when a desired
|
|
/// component is part of an \c ArrayHandle with a \c vtkm::Vec \c ValueType.
|
|
///
|
|
template <typename... ArrayTs>
|
|
class ArrayHandleCompositeVector
|
|
: public ArrayHandle<typename internal::CompositeVectorTraits<ArrayTs...>::ValueType,
|
|
typename internal::CompositeVectorTraits<ArrayTs...>::StorageTag>
|
|
{
|
|
private:
|
|
using Traits = internal::CompositeVectorTraits<ArrayTs...>;
|
|
using TupleType = vtkm::Tuple<ArrayTs...>;
|
|
using StorageType = typename Traits::StorageType;
|
|
|
|
public:
|
|
VTKM_ARRAY_HANDLE_SUBCLASS(ArrayHandleCompositeVector,
|
|
(ArrayHandleCompositeVector<ArrayTs...>),
|
|
(typename Traits::Superclass));
|
|
|
|
VTKM_CONT
|
|
ArrayHandleCompositeVector(const ArrayTs&... arrays)
|
|
: Superclass(StorageType(arrays...))
|
|
{
|
|
}
|
|
};
|
|
|
|
/// Create a composite vector array from other arrays.
|
|
///
|
|
template <typename... ArrayTs>
|
|
VTKM_CONT ArrayHandleCompositeVector<ArrayTs...> make_ArrayHandleCompositeVector(
|
|
const ArrayTs&... arrays)
|
|
{
|
|
VTKM_STATIC_ASSERT_MSG(internal::compvec::AllAreArrayHandles<ArrayTs...>::Value,
|
|
"Arguments to make_ArrayHandleCompositeVector must be "
|
|
"of ArrayHandle types.");
|
|
return ArrayHandleCompositeVector<ArrayTs...>(arrays...);
|
|
}
|
|
}
|
|
} // namespace vtkm::cont
|
|
|
|
//=============================================================================
|
|
// Specializations of serialization related classes
|
|
/// @cond SERIALIZATION
|
|
namespace vtkm
|
|
{
|
|
namespace cont
|
|
{
|
|
|
|
template <typename... AHs>
|
|
struct SerializableTypeString<vtkm::cont::ArrayHandleCompositeVector<AHs...>>
|
|
{
|
|
static VTKM_CONT const std::string& Get()
|
|
{
|
|
static std::string name =
|
|
"AH_CompositeVector<" + internal::GetVariadicSerializableTypeString(AHs{}...) + ">";
|
|
return name;
|
|
}
|
|
};
|
|
|
|
template <typename T, typename... STs>
|
|
struct SerializableTypeString<
|
|
vtkm::cont::ArrayHandle<vtkm::Vec<T, static_cast<vtkm::IdComponent>(sizeof...(STs))>,
|
|
vtkm::cont::StorageTagCompositeVec<STs...>>>
|
|
: SerializableTypeString<
|
|
vtkm::cont::ArrayHandleCompositeVector<vtkm::cont::ArrayHandle<T, STs>...>>
|
|
{
|
|
};
|
|
}
|
|
} // vtkm::cont
|
|
|
|
namespace mangled_diy_namespace
|
|
{
|
|
|
|
template <typename... AHs>
|
|
struct Serialization<vtkm::cont::ArrayHandleCompositeVector<AHs...>>
|
|
{
|
|
private:
|
|
using Type = typename vtkm::cont::ArrayHandleCompositeVector<AHs...>;
|
|
using BaseType = vtkm::cont::ArrayHandle<typename Type::ValueType, typename Type::StorageTag>;
|
|
|
|
struct SaveFunctor
|
|
{
|
|
BinaryBuffer& Buffer;
|
|
SaveFunctor(BinaryBuffer& bb)
|
|
: Buffer(bb)
|
|
{
|
|
}
|
|
|
|
template <typename AH>
|
|
void operator()(const AH& ah) const
|
|
{
|
|
vtkmdiy::save(this->Buffer, ah);
|
|
}
|
|
};
|
|
|
|
struct LoadFunctor
|
|
{
|
|
BinaryBuffer& Buffer;
|
|
LoadFunctor(BinaryBuffer& bb)
|
|
: Buffer(bb)
|
|
{
|
|
}
|
|
|
|
template <typename AH>
|
|
void operator()(AH& ah) const
|
|
{
|
|
vtkmdiy::load(this->Buffer, ah);
|
|
}
|
|
};
|
|
|
|
static BaseType Create(const AHs&... arrays) { return Type(arrays...); }
|
|
|
|
public:
|
|
static VTKM_CONT void save(BinaryBuffer& bb, const BaseType& obj)
|
|
{
|
|
obj.GetStorage().GetArrayTuple().ForEach(SaveFunctor{ bb });
|
|
}
|
|
|
|
static VTKM_CONT void load(BinaryBuffer& bb, BaseType& obj)
|
|
{
|
|
vtkm::Tuple<AHs...> tuple;
|
|
tuple.ForEach(LoadFunctor{ bb });
|
|
obj = tuple.Apply(Create);
|
|
}
|
|
};
|
|
|
|
template <typename T, typename... STs>
|
|
struct Serialization<
|
|
vtkm::cont::ArrayHandle<vtkm::Vec<T, static_cast<vtkm::IdComponent>(sizeof...(STs))>,
|
|
vtkm::cont::StorageTagCompositeVec<STs...>>>
|
|
: Serialization<vtkm::cont::ArrayHandleCompositeVector<vtkm::cont::ArrayHandle<T, STs>...>>
|
|
{
|
|
};
|
|
} // diy
|
|
/// @endcond SERIALIZATION
|
|
|
|
#endif //vtk_m_ArrayHandleCompositeVector_h
|