mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-10-05 18:08:59 +00:00
5659d74bd4
05f144eb1 Allow ArrayHandle to have a runtime selectable number of buffers Acked-by: Kitware Robot <kwrobot@kitware.com> Merge-request: !2798
329 lines
11 KiB
C++
329 lines
11 KiB
C++
//============================================================================
|
|
// Copyright (c) Kitware, Inc.
|
|
// All rights reserved.
|
|
// See LICENSE.txt for details.
|
|
//
|
|
// This software is distributed WITHOUT ANY WARRANTY; without even
|
|
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
// PURPOSE. See the above copyright notice for more information.
|
|
//============================================================================
|
|
#ifndef vtk_m_cont_ArrayHandleExtractComponent_h
|
|
#define vtk_m_cont_ArrayHandleExtractComponent_h
|
|
|
|
#include <vtkm/StaticAssert.h>
|
|
#include <vtkm/VecTraits.h>
|
|
#include <vtkm/cont/ArrayExtractComponent.h>
|
|
#include <vtkm/cont/ArrayHandle.h>
|
|
|
|
namespace vtkm
|
|
{
|
|
namespace internal
|
|
{
|
|
|
|
template <typename PortalType>
|
|
class VTKM_ALWAYS_EXPORT ArrayPortalExtractComponent
|
|
{
|
|
using Writable = vtkm::internal::PortalSupportsSets<PortalType>;
|
|
|
|
public:
|
|
using VectorType = typename PortalType::ValueType;
|
|
using Traits = vtkm::VecTraits<VectorType>;
|
|
using ValueType = typename Traits::ComponentType;
|
|
|
|
VTKM_EXEC_CONT
|
|
ArrayPortalExtractComponent()
|
|
: Portal()
|
|
, Component(0)
|
|
{
|
|
}
|
|
|
|
VTKM_EXEC_CONT
|
|
ArrayPortalExtractComponent(const PortalType& portal, vtkm::IdComponent component)
|
|
: Portal(portal)
|
|
, Component(component)
|
|
{
|
|
}
|
|
|
|
ArrayPortalExtractComponent(const ArrayPortalExtractComponent&) = default;
|
|
ArrayPortalExtractComponent(ArrayPortalExtractComponent&&) = default;
|
|
ArrayPortalExtractComponent& operator=(const ArrayPortalExtractComponent&) = default;
|
|
ArrayPortalExtractComponent& operator=(ArrayPortalExtractComponent&&) = default;
|
|
|
|
VTKM_EXEC_CONT
|
|
vtkm::Id GetNumberOfValues() const { return this->Portal.GetNumberOfValues(); }
|
|
|
|
VTKM_EXEC_CONT
|
|
ValueType Get(vtkm::Id index) const
|
|
{
|
|
return Traits::GetComponent(this->Portal.Get(index), this->Component);
|
|
}
|
|
|
|
template <typename Writable_ = Writable,
|
|
typename = typename std::enable_if<Writable_::value>::type>
|
|
VTKM_EXEC_CONT void Set(vtkm::Id index, const ValueType& value) const
|
|
{
|
|
VectorType vec = this->Portal.Get(index);
|
|
Traits::SetComponent(vec, this->Component, value);
|
|
this->Portal.Set(index, vec);
|
|
}
|
|
|
|
VTKM_EXEC_CONT
|
|
const PortalType& GetPortal() const { return this->Portal; }
|
|
|
|
private:
|
|
PortalType Portal;
|
|
vtkm::IdComponent Component;
|
|
}; // class ArrayPortalExtractComponent
|
|
|
|
} // namespace internal
|
|
|
|
namespace cont
|
|
{
|
|
|
|
template <typename ArrayHandleType>
|
|
class StorageTagExtractComponent
|
|
{
|
|
};
|
|
|
|
namespace internal
|
|
{
|
|
|
|
template <typename ArrayHandleType>
|
|
class Storage<typename vtkm::VecTraits<typename ArrayHandleType::ValueType>::ComponentType,
|
|
StorageTagExtractComponent<ArrayHandleType>>
|
|
{
|
|
using SourceValueType = typename ArrayHandleType::ValueType;
|
|
using ValueType = typename vtkm::VecTraits<SourceValueType>::ComponentType;
|
|
using SourceStorageTag = typename ArrayHandleType::StorageTag;
|
|
using SourceStorage = vtkm::cont::internal::Storage<SourceValueType, SourceStorageTag>;
|
|
|
|
public:
|
|
VTKM_CONT static vtkm::IdComponent ComponentIndex(
|
|
const std::vector<vtkm::cont::internal::Buffer>& buffers)
|
|
{
|
|
return buffers[0].GetMetaData<vtkm::IdComponent>();
|
|
}
|
|
|
|
VTKM_CONT static std::vector<vtkm::cont::internal::Buffer> SourceBuffers(
|
|
const std::vector<vtkm::cont::internal::Buffer>& buffers)
|
|
{
|
|
return std::vector<vtkm::cont::internal::Buffer>(buffers.begin() + 1, buffers.end());
|
|
}
|
|
|
|
using ReadPortalType =
|
|
vtkm::internal::ArrayPortalExtractComponent<typename SourceStorage::ReadPortalType>;
|
|
using WritePortalType =
|
|
vtkm::internal::ArrayPortalExtractComponent<typename SourceStorage::WritePortalType>;
|
|
|
|
VTKM_CONT static vtkm::Id GetNumberOfValues(
|
|
const std::vector<vtkm::cont::internal::Buffer>& buffers)
|
|
{
|
|
return SourceStorage::GetNumberOfValues(SourceBuffers(buffers));
|
|
}
|
|
|
|
VTKM_CONT static void Fill(const std::vector<vtkm::cont::internal::Buffer>&,
|
|
const ValueType&,
|
|
vtkm::Id,
|
|
vtkm::Id,
|
|
vtkm::cont::Token&)
|
|
{
|
|
throw vtkm::cont::ErrorBadType("Fill not supported for ArrayHandleExtractComponent.");
|
|
}
|
|
|
|
VTKM_CONT static void ResizeBuffers(vtkm::Id numValues,
|
|
const std::vector<vtkm::cont::internal::Buffer>& buffers,
|
|
vtkm::CopyFlag preserve,
|
|
vtkm::cont::Token& token)
|
|
{
|
|
SourceStorage::ResizeBuffers(numValues, SourceBuffers(buffers), preserve, token);
|
|
}
|
|
|
|
VTKM_CONT static ReadPortalType CreateReadPortal(
|
|
const std::vector<vtkm::cont::internal::Buffer>& buffers,
|
|
vtkm::cont::DeviceAdapterId device,
|
|
vtkm::cont::Token& token)
|
|
{
|
|
return ReadPortalType(SourceStorage::CreateReadPortal(SourceBuffers(buffers), device, token),
|
|
ComponentIndex(buffers));
|
|
}
|
|
|
|
VTKM_CONT static WritePortalType CreateWritePortal(
|
|
const std::vector<vtkm::cont::internal::Buffer>& buffers,
|
|
vtkm::cont::DeviceAdapterId device,
|
|
vtkm::cont::Token& token)
|
|
{
|
|
return WritePortalType(SourceStorage::CreateWritePortal(SourceBuffers(buffers), device, token),
|
|
ComponentIndex(buffers));
|
|
}
|
|
|
|
VTKM_CONT static auto CreateBuffers(vtkm::IdComponent componentIndex = 0,
|
|
const ArrayHandleType& array = ArrayHandleType{})
|
|
-> decltype(vtkm::cont::internal::CreateBuffers())
|
|
{
|
|
return vtkm::cont::internal::CreateBuffers(componentIndex, array);
|
|
}
|
|
}; // class Storage
|
|
|
|
}
|
|
}
|
|
} // namespace vtkm::cont::internal
|
|
|
|
namespace vtkm
|
|
{
|
|
namespace cont
|
|
{
|
|
|
|
/// \brief A fancy ArrayHandle that turns a vector array into a scalar array by
|
|
/// slicing out a single component of each vector.
|
|
///
|
|
/// ArrayHandleExtractComponent is a specialization of ArrayHandle. It takes an
|
|
/// input ArrayHandle with a vtkm::Vec ValueType and a component index
|
|
/// and uses this information to expose a scalar array consisting of the
|
|
/// specified component across all vectors in the input ArrayHandle. So for a
|
|
/// given index i, ArrayHandleExtractComponent looks up the i-th vtkm::Vec in
|
|
/// the index array and reads or writes to the specified component, leave all
|
|
/// other components unmodified. This is done on the fly rather than creating a
|
|
/// copy of the array.
|
|
template <typename ArrayHandleType>
|
|
class ArrayHandleExtractComponent
|
|
: public vtkm::cont::ArrayHandle<
|
|
typename vtkm::VecTraits<typename ArrayHandleType::ValueType>::ComponentType,
|
|
StorageTagExtractComponent<ArrayHandleType>>
|
|
{
|
|
public:
|
|
VTKM_ARRAY_HANDLE_SUBCLASS(
|
|
ArrayHandleExtractComponent,
|
|
(ArrayHandleExtractComponent<ArrayHandleType>),
|
|
(vtkm::cont::ArrayHandle<
|
|
typename vtkm::VecTraits<typename ArrayHandleType::ValueType>::ComponentType,
|
|
StorageTagExtractComponent<ArrayHandleType>>));
|
|
|
|
protected:
|
|
using StorageType = vtkm::cont::internal::Storage<ValueType, StorageTag>;
|
|
|
|
public:
|
|
VTKM_CONT
|
|
ArrayHandleExtractComponent(const ArrayHandleType& array, vtkm::IdComponent component)
|
|
: Superclass(StorageType::CreateBuffers(component, array))
|
|
{
|
|
}
|
|
|
|
VTKM_CONT vtkm::IdComponent GetComponent() const
|
|
{
|
|
return StorageType::ComponentIndex(this->GetBuffers());
|
|
}
|
|
|
|
VTKM_CONT ArrayHandleType GetArray() const
|
|
{
|
|
using BaseArray = vtkm::cont::ArrayHandle<typename ArrayHandleType::ValueType,
|
|
typename ArrayHandleType::StorageTag>;
|
|
return ArrayHandleType(BaseArray(StorageType::SourceBuffers(this->GetBuffers())));
|
|
}
|
|
};
|
|
|
|
/// make_ArrayHandleExtractComponent is convenience function to generate an
|
|
/// ArrayHandleExtractComponent.
|
|
template <typename ArrayHandleType>
|
|
VTKM_CONT ArrayHandleExtractComponent<ArrayHandleType> make_ArrayHandleExtractComponent(
|
|
const ArrayHandleType& array,
|
|
vtkm::IdComponent component)
|
|
{
|
|
return ArrayHandleExtractComponent<ArrayHandleType>(array, component);
|
|
}
|
|
|
|
namespace internal
|
|
{
|
|
|
|
template <typename ArrayHandleType>
|
|
struct ArrayExtractComponentImpl<vtkm::cont::StorageTagExtractComponent<ArrayHandleType>>
|
|
{
|
|
auto operator()(const vtkm::cont::ArrayHandleExtractComponent<ArrayHandleType>& src,
|
|
vtkm::IdComponent componentIndex,
|
|
vtkm::CopyFlag allowCopy) const
|
|
-> decltype(ArrayExtractComponentImpl<typename ArrayHandleType::StorageTag>{}(
|
|
std::declval<ArrayHandleType>(),
|
|
componentIndex,
|
|
allowCopy))
|
|
{
|
|
using ValueType = typename ArrayHandleType::ValueType;
|
|
using ComponentType = typename vtkm::VecTraits<ValueType>::ComponentType;
|
|
using FlatComponent = vtkm::VecFlat<ComponentType>;
|
|
constexpr vtkm::IdComponent FLAT_SUB_COMPONENTS = FlatComponent::NUM_COMPONENTS;
|
|
return ArrayExtractComponentImpl<typename ArrayHandleType::StorageTag>{}(
|
|
src.GetArray(), (src.GetComponent() * FLAT_SUB_COMPONENTS) + componentIndex, allowCopy);
|
|
}
|
|
};
|
|
|
|
} // namespace internal
|
|
|
|
}
|
|
} // namespace vtkm::cont
|
|
|
|
//=============================================================================
|
|
// Specializations of serialization related classes
|
|
/// @cond SERIALIZATION
|
|
namespace vtkm
|
|
{
|
|
namespace cont
|
|
{
|
|
|
|
template <typename AH>
|
|
struct SerializableTypeString<vtkm::cont::ArrayHandleExtractComponent<AH>>
|
|
{
|
|
static VTKM_CONT const std::string& Get()
|
|
{
|
|
static std::string name = "AH_ExtractComponent<" + SerializableTypeString<AH>::Get() + ">";
|
|
return name;
|
|
}
|
|
};
|
|
|
|
template <typename AH>
|
|
struct SerializableTypeString<
|
|
vtkm::cont::ArrayHandle<typename vtkm::VecTraits<typename AH::ValueType>::ComponentType,
|
|
vtkm::cont::StorageTagExtractComponent<AH>>>
|
|
: SerializableTypeString<vtkm::cont::ArrayHandleExtractComponent<AH>>
|
|
{
|
|
};
|
|
}
|
|
} // vtkm::cont
|
|
|
|
namespace mangled_diy_namespace
|
|
{
|
|
|
|
template <typename AH>
|
|
struct Serialization<vtkm::cont::ArrayHandleExtractComponent<AH>>
|
|
{
|
|
private:
|
|
using Type = vtkm::cont::ArrayHandleExtractComponent<AH>;
|
|
using BaseType = vtkm::cont::ArrayHandle<typename Type::ValueType, typename Type::StorageTag>;
|
|
|
|
public:
|
|
static VTKM_CONT void save(BinaryBuffer& bb, const BaseType& obj)
|
|
{
|
|
vtkmdiy::save(bb, Type(obj).GetComponent());
|
|
vtkmdiy::save(bb, Type(obj).GetArray());
|
|
}
|
|
|
|
static VTKM_CONT void load(BinaryBuffer& bb, BaseType& obj)
|
|
{
|
|
vtkm::IdComponent component = 0;
|
|
AH array;
|
|
vtkmdiy::load(bb, component);
|
|
vtkmdiy::load(bb, array);
|
|
|
|
obj = vtkm::cont::make_ArrayHandleExtractComponent(array, component);
|
|
}
|
|
};
|
|
|
|
template <typename AH>
|
|
struct Serialization<
|
|
vtkm::cont::ArrayHandle<typename vtkm::VecTraits<typename AH::ValueType>::ComponentType,
|
|
vtkm::cont::StorageTagExtractComponent<AH>>>
|
|
: Serialization<vtkm::cont::ArrayHandleExtractComponent<AH>>
|
|
{
|
|
};
|
|
} // diy
|
|
/// @endcond SERIALIZATION
|
|
|
|
#endif // vtk_m_cont_ArrayHandleExtractComponent_h
|