mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-08 21:33:55 +00:00
5ef4e7eeee
What was previously declared as `ArrayHandleNewStyle` is now just the implementation of `ArrayHandle`. The old implementation of `ArrayHandle` has been moved to `ArrayHandleDeprecated`, and `ArrayHandle`s still using this implementation must declare `VTKM_ARRAY_HANDLE_DEPRECATED` to use it.
617 lines
20 KiB
C++
617 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/ArrayExtractComponent.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 internal
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{
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namespace compvec
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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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// 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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struct 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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};
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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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using ValueCheck = vtkm::List<CheckValueType<ComponentType, ArrayTypes>...>;
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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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// 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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} // 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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}
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} // vtkm::internal
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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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template <typename ArrayType>
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struct VerifyArrayHandle
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{
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VTKM_STATIC_ASSERT_MSG(vtkm::cont::internal::ArrayHandleCheck<ArrayType>::type::value,
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"Template parameters for ArrayHandleCompositeVector "
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"must be a list of ArrayHandle types.");
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};
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template <std::size_t I>
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struct BufferIndexImpl
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{
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template <typename... Ts>
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static constexpr vtkm::IdComponent Value(vtkm::IdComponent n, Ts... remaining)
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{
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return n + BufferIndexImpl<I - 1>::Value(remaining...);
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}
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};
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template <>
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struct BufferIndexImpl<0>
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{
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template <typename... Ts>
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static constexpr vtkm::IdComponent Value(Ts...)
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{
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return 0;
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}
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};
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template <std::size_t I, typename... StorageTypes>
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constexpr vtkm::IdComponent BufferIndex()
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{
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return BufferIndexImpl<I>::Value(StorageTypes::GetNumberOfBuffers()...);
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}
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} // end namespace compvec
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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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using CheckArrayHandles = vtkm::List<compvec::VerifyArrayHandle<ArrayTs>...>;
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using ValueType = typename vtkm::internal::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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template <typename S>
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using StorageFor = vtkm::cont::internal::Storage<T, S>;
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using StorageTuple = vtkm::Tuple<StorageFor<StorageTags>...>;
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template <std::size_t I>
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VTKM_CONT static constexpr vtkm::IdComponent BufferIndex()
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{
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return compvec::BufferIndex<I, StorageFor<StorageTags>...>();
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}
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template <std::size_t I, typename Buff>
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VTKM_CONT static Buff* Buffers(Buff* buffers)
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{
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return buffers + BufferIndex<I>();
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}
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using IndexList = vtkmstd::make_index_sequence<sizeof...(StorageTags)>;
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public:
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using ReadPortalType =
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vtkm::internal::ArrayPortalCompositeVector<typename StorageFor<StorageTags>::ReadPortalType...>;
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using WritePortalType = vtkm::internal::ArrayPortalCompositeVector<
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typename StorageFor<StorageTags>::WritePortalType...>;
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private:
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// Hoop to jump through to use Storage::ResizeBuffer in an initializer list.
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template <typename StorageType>
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static bool ResizeBuffersCallthrough(StorageType,
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vtkm::Id numValues,
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vtkm::cont::internal::Buffer* buffers,
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vtkm::CopyFlag preserve,
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vtkm::cont::Token& token)
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{
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StorageType::ResizeBuffers(numValues, buffers, preserve, token);
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return false; // Return value does not matter. Hopefully just thrown away by compiler.
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}
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template <std::size_t... Is>
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static void ResizeBuffersImpl(vtkmstd::index_sequence<Is...>,
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vtkm::Id numValues,
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vtkm::cont::internal::Buffer* buffers,
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vtkm::CopyFlag preserve,
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vtkm::cont::Token& token)
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{
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auto init_list = { ResizeBuffersCallthrough(vtkm::tuple_element_t<Is, StorageTuple>{},
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numValues,
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Buffers<Is>(buffers),
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preserve,
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token)... };
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(void)init_list;
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}
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template <std::size_t... Is>
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static ReadPortalType CreateReadPortalImpl(vtkmstd::index_sequence<Is...>,
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const vtkm::cont::internal::Buffer* buffers,
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vtkm::cont::DeviceAdapterId device,
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vtkm::cont::Token& token)
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{
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return ReadPortalType(vtkm::tuple_element_t<Is, StorageTuple>::CreateReadPortal(
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Buffers<Is>(buffers), device, token)...);
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}
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template <std::size_t... Is>
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static WritePortalType CreateWritePortalImpl(vtkmstd::index_sequence<Is...>,
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vtkm::cont::internal::Buffer* buffers,
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vtkm::cont::DeviceAdapterId device,
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vtkm::cont::Token& token)
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{
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return WritePortalType(vtkm::tuple_element_t<Is, StorageTuple>::CreateWritePortal(
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Buffers<Is>(buffers), device, token)...);
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}
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public:
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VTKM_CONT constexpr static vtkm::IdComponent GetNumberOfBuffers()
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{
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return BufferIndex<sizeof...(StorageTags)>();
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}
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VTKM_CONT static vtkm::Id GetNumberOfValues(const vtkm::cont::internal::Buffer* buffers)
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{
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return vtkm::TupleElement<0, StorageTuple>::GetNumberOfValues(buffers);
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}
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VTKM_CONT static void ResizeBuffers(vtkm::Id numValues,
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vtkm::cont::internal::Buffer* buffers,
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vtkm::CopyFlag preserve,
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vtkm::cont::Token& token)
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{
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ResizeBuffersImpl(IndexList{}, numValues, buffers, preserve, token);
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}
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VTKM_CONT static ReadPortalType CreateReadPortal(const vtkm::cont::internal::Buffer* buffers,
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vtkm::cont::DeviceAdapterId device,
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vtkm::cont::Token& token)
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{
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return CreateReadPortalImpl(IndexList{}, buffers, device, token);
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}
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VTKM_CONT static WritePortalType CreateWritePortal(vtkm::cont::internal::Buffer* buffers,
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vtkm::cont::DeviceAdapterId device,
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vtkm::cont::Token& token)
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{
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return CreateWritePortalImpl(IndexList{}, buffers, device, token);
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}
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private:
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template <typename ArrayType>
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VTKM_CONT static bool CopyBuffers(const ArrayType& array,
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vtkm::cont::internal::Buffer* destBuffers)
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{
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vtkm::IdComponent numBuffers = array.GetNumberOfBuffers();
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const vtkm::cont::internal::Buffer* srcBuffers = array.GetBuffers();
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for (vtkm::IdComponent buffIndex = 0; buffIndex < numBuffers; ++buffIndex)
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{
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destBuffers[buffIndex] = srcBuffers[buffIndex];
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}
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return false; // Return value does not matter. Hopefully just thrown away by compiler.
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}
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template <std::size_t... Is, typename... ArrayTs>
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VTKM_CONT static std::vector<vtkm::cont::internal::Buffer> CreateBuffersImpl(
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vtkmstd::index_sequence<Is...>,
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const ArrayTs... arrays)
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{
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std::vector<vtkm::cont::internal::Buffer> buffers(
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static_cast<std::size_t>(GetNumberOfBuffers()));
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auto init_list = { CopyBuffers(arrays, Buffers<Is>(&buffers.front()))... };
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(void)init_list;
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return buffers;
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}
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public:
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template <typename... ArrayTs>
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VTKM_CONT static std::vector<vtkm::cont::internal::Buffer> CreateBuffers(const ArrayTs... arrays)
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{
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return CreateBuffersImpl(IndexList{}, arrays...);
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}
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private:
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using ArrayTupleType = vtkm::Tuple<vtkm::cont::ArrayHandle<T, StorageTags>...>;
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template <std::size_t... Is>
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VTKM_CONT static ArrayTupleType GetArrayTupleImpl(vtkmstd::index_sequence<Is...>,
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const vtkm::cont::internal::Buffer* buffers)
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{
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return ArrayTupleType(vtkm::cont::ArrayHandle<T, StorageTags>(Buffers<Is>(buffers))...);
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}
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public:
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VTKM_CONT static ArrayTupleType GetArrayTuple(const vtkm::cont::internal::Buffer* buffers)
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{
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return GetArrayTupleImpl(IndexList{}, buffers);
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}
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};
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// Special degenerative case when there is only one array being composited
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template <typename T, typename StorageTag>
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struct Storage<T, vtkm::cont::StorageTagCompositeVec<StorageTag>> : Storage<T, StorageTag>
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{
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VTKM_CONT static std::vector<vtkm::cont::internal::Buffer> CreateBuffers(
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const vtkm::cont::ArrayHandle<T, StorageTag>& array)
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{
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return vtkm::cont::internal::CreateBuffers(array);
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}
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VTKM_CONT static vtkm::Tuple<vtkm::cont::ArrayHandle<T, StorageTag>> GetArrayTuple(
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const vtkm::cont::internal::Buffer* buffers)
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{
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return vtkm::cont::ArrayHandle<T, StorageTag>(buffers);
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}
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};
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} // namespace internal
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/// \brief An \c ArrayHandle that combines components from other arrays.
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///
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/// \c ArrayHandleCompositeVector is a specialization of \c ArrayHandle that
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/// derives its content from other arrays. It takes any number of
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/// single-component \c ArrayHandle objects and mimics an array that contains
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/// vectors with components that come from these delegate arrays.
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///
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/// The easiest way to create and type an \c ArrayHandleCompositeVector is
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/// to use the \c make_ArrayHandleCompositeVector functions.
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///
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/// The \c ArrayHandleExtractComponent class may be helpful when a desired
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/// component is part of an \c ArrayHandle with a \c vtkm::Vec \c ValueType.
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///
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template <typename... ArrayTs>
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class ArrayHandleCompositeVector
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: public ArrayHandle<typename internal::CompositeVectorTraits<ArrayTs...>::ValueType,
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typename internal::CompositeVectorTraits<ArrayTs...>::StorageTag>
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{
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private:
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using Traits = internal::CompositeVectorTraits<ArrayTs...>;
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using StorageType = typename Traits::StorageType;
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public:
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VTKM_ARRAY_HANDLE_SUBCLASS(ArrayHandleCompositeVector,
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(ArrayHandleCompositeVector<ArrayTs...>),
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(typename Traits::Superclass));
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VTKM_CONT
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ArrayHandleCompositeVector(const ArrayTs&... arrays)
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: Superclass(StorageType::CreateBuffers(arrays...))
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{
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}
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VTKM_CONT vtkm::Tuple<ArrayTs...> GetArrayTuple() const
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{
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return StorageType::GetArrayTuple(this->GetBuffers());
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}
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};
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/// Create a composite vector array from other arrays.
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///
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template <typename... ArrayTs>
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VTKM_CONT ArrayHandleCompositeVector<ArrayTs...> make_ArrayHandleCompositeVector(
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const ArrayTs&... arrays)
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{
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// Will issue compiler error if any of ArrayTs is not a valid ArrayHandle.
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vtkm::List<internal::compvec::VerifyArrayHandle<ArrayTs>...> checkArrayHandles;
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(void)checkArrayHandles;
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return ArrayHandleCompositeVector<ArrayTs...>(arrays...);
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}
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//--------------------------------------------------------------------------------
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// Specialization of ArrayExtractComponent
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namespace internal
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{
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namespace detail
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{
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template <typename T>
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struct ExtractComponentCompositeVecFunctor
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{
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using ResultArray = vtkm::cont::ArrayHandleStride<typename vtkm::VecTraits<T>::BaseComponentType>;
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ResultArray operator()(vtkm::IdComponent, vtkm::IdComponent, vtkm::CopyFlag) const
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{
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throw vtkm::cont::ErrorBadValue("Invalid component index given to ArrayExtractComponent.");
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}
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template <typename A0, typename... As>
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ResultArray operator()(vtkm::IdComponent compositeIndex,
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vtkm::IdComponent subIndex,
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vtkm::CopyFlag allowCopy,
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const A0& array0,
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const As&... arrays) const
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{
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if (compositeIndex == 0)
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{
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return vtkm::cont::internal::ArrayExtractComponentImpl<typename A0::StorageTag>{}(
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array0, subIndex, allowCopy);
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}
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else
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{
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return (*this)(--compositeIndex, subIndex, allowCopy, arrays...);
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}
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}
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};
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} // namespace detail
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template <typename... StorageTags>
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struct ArrayExtractComponentImpl<StorageTagCompositeVec<StorageTags...>>
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{
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template <typename T, vtkm::IdComponent NUM_COMPONENTS>
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typename detail::ExtractComponentCompositeVecFunctor<T>::ResultArray operator()(
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const vtkm::cont::ArrayHandle<vtkm::Vec<T, NUM_COMPONENTS>,
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vtkm::cont::StorageTagCompositeVec<StorageTags...>>& src,
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vtkm::IdComponent componentIndex,
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vtkm::CopyFlag allowCopy) const
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{
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vtkm::cont::ArrayHandleCompositeVector<vtkm::cont::ArrayHandle<T, StorageTags>...> array(src);
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constexpr vtkm::IdComponent NUM_SUB_COMPONENTS = vtkm::VecFlat<T>::NUM_COMPONENTS;
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return array.GetArrayTuple().Apply(detail::ExtractComponentCompositeVecFunctor<T>{},
|
|
componentIndex / NUM_SUB_COMPONENTS,
|
|
componentIndex % NUM_SUB_COMPONENTS,
|
|
allowCopy);
|
|
}
|
|
};
|
|
|
|
} // namespace internal
|
|
|
|
}
|
|
} // 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)
|
|
{
|
|
Type(obj).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
|