vtk-m2/vtkm/worklet/particleadvection/CellInterpolationHelper.h
2019-08-08 09:15:28 -07:00

397 lines
13 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_worklet_particle_advection_cell_interpolation_helper
#define vtk_m_worklet_particle_advection_cell_interpolation_helper
#include <vtkm/CellShape.h>
#include <vtkm/Types.h>
#include <vtkm/VecVariable.h>
#include <vtkm/cont/ExecutionObjectBase.h>
#include <vtkm/exec/CellInterpolate.h>
/*
* Interface to define the helper classes that can return mesh data
* on a cell by cell basis.
*/
namespace vtkm
{
namespace exec
{
class CellInterpolationHelper : public vtkm::VirtualObjectBase
{
public:
VTKM_EXEC_CONT virtual ~CellInterpolationHelper() noexcept
{
// This must not be defaulted, since defaulted virtual destructors are
// troublesome with CUDA __host__ __device__ markup.
}
VTKM_EXEC
virtual void GetCellInfo(const vtkm::Id& cellId,
vtkm::UInt8& cellShape,
vtkm::IdComponent& numVerts,
vtkm::VecVariable<vtkm::Id, 8>& indices) const = 0;
};
class StructuredCellInterpolationHelper : public vtkm::exec::CellInterpolationHelper
{
public:
StructuredCellInterpolationHelper() = default;
VTKM_CONT
StructuredCellInterpolationHelper(vtkm::Id3 cellDims, vtkm::Id3 pointDims, bool is3D)
: CellDims(cellDims)
, PointDims(pointDims)
, Is3D(is3D)
{
}
VTKM_EXEC
void GetCellInfo(const vtkm::Id& cellId,
vtkm::UInt8& cellShape,
vtkm::IdComponent& numVerts,
vtkm::VecVariable<vtkm::Id, 8>& indices) const override
{
vtkm::Id3 logicalCellId;
logicalCellId[0] = cellId % this->CellDims[0];
logicalCellId[1] = (cellId / this->CellDims[0]) % this->CellDims[1];
if (this->Is3D)
{
logicalCellId[2] = cellId / (this->CellDims[0] * this->CellDims[1]);
indices.Append((logicalCellId[2] * this->PointDims[1] + logicalCellId[1]) *
this->PointDims[0] +
logicalCellId[0]);
indices.Append(indices[0] + 1);
indices.Append(indices[1] + this->PointDims[0]);
indices.Append(indices[2] - 1);
indices.Append(indices[0] + this->PointDims[0] * this->PointDims[1]);
indices.Append(indices[4] + 1);
indices.Append(indices[5] + this->PointDims[0]);
indices.Append(indices[6] - 1);
cellShape = static_cast<vtkm::UInt8>(vtkm::CELL_SHAPE_HEXAHEDRON);
numVerts = 8;
}
else
{
indices.Append(logicalCellId[1] * this->PointDims[0] + logicalCellId[0]);
indices.Append(indices[0] + 1);
indices.Append(indices[1] + this->PointDims[0]);
indices.Append(indices[2] - 1);
cellShape = static_cast<vtkm::UInt8>(vtkm::CELL_SHAPE_QUAD);
numVerts = 4;
}
}
private:
vtkm::Id3 CellDims;
vtkm::Id3 PointDims;
bool Is3D = true;
};
template <typename DeviceAdapter>
class SingleCellExplicitInterpolationHelper : public vtkm::exec::CellInterpolationHelper
{
using ConnType = vtkm::cont::ArrayHandle<vtkm::Id>;
using ConnPortalType = typename ConnType::template ExecutionTypes<DeviceAdapter>::PortalConst;
public:
SingleCellExplicitInterpolationHelper() = default;
VTKM_CONT
SingleCellExplicitInterpolationHelper(vtkm::UInt8 cellShape,
vtkm::IdComponent pointsPerCell,
const ConnType& connectivity)
: CellShape(cellShape)
, PointsPerCell(pointsPerCell)
, Connectivity(connectivity.PrepareForInput(DeviceAdapter()))
{
}
VTKM_EXEC
void GetCellInfo(const vtkm::Id& cellId,
vtkm::UInt8& cellShape,
vtkm::IdComponent& numVerts,
vtkm::VecVariable<vtkm::Id, 8>& indices) const override
{
cellShape = CellShape;
numVerts = PointsPerCell;
vtkm::Id n = static_cast<vtkm::Id>(PointsPerCell);
vtkm::Id offset = cellId * n;
for (vtkm::Id i = 0; i < n; i++)
indices.Append(Connectivity.Get(offset + i));
}
private:
vtkm::UInt8 CellShape;
vtkm::IdComponent PointsPerCell;
ConnPortalType Connectivity;
};
template <typename DeviceAdapter>
class CellExplicitInterpolationHelper : public vtkm::exec::CellInterpolationHelper
{
using ShapeType = vtkm::cont::ArrayHandle<vtkm::UInt8>;
using NumIdxType = vtkm::cont::ArrayHandle<vtkm::IdComponent>;
using OffsetType = vtkm::cont::ArrayHandle<vtkm::Id>;
using ConnType = vtkm::cont::ArrayHandle<vtkm::Id>;
using ShapePortalType = typename ShapeType::template ExecutionTypes<DeviceAdapter>::PortalConst;
using NumIdxPortalType = typename NumIdxType::template ExecutionTypes<DeviceAdapter>::PortalConst;
using OffsetPortalType = typename OffsetType::template ExecutionTypes<DeviceAdapter>::PortalConst;
using ConnPortalType = typename ConnType::template ExecutionTypes<DeviceAdapter>::PortalConst;
public:
CellExplicitInterpolationHelper() = default;
VTKM_CONT
CellExplicitInterpolationHelper(const ShapeType& shape,
const NumIdxType& numIdx,
const OffsetType& offset,
const ConnType& connectivity)
: Shape(shape.PrepareForInput(DeviceAdapter()))
, NumIdx(numIdx.PrepareForInput(DeviceAdapter()))
, Offset(offset.PrepareForInput(DeviceAdapter()))
, Connectivity(connectivity.PrepareForInput(DeviceAdapter()))
{
}
VTKM_EXEC
void GetCellInfo(const vtkm::Id& cellId,
vtkm::UInt8& cellShape,
vtkm::IdComponent& numVerts,
vtkm::VecVariable<vtkm::Id, 8>& indices) const override
{
cellShape = Shape.Get(cellId);
numVerts = NumIdx.Get(cellId);
vtkm::Id offset = Offset.Get(cellId);
for (vtkm::IdComponent i = 0; i < numVerts; i++)
indices.Append(Connectivity.Get(offset + i));
}
private:
ShapePortalType Shape;
NumIdxPortalType NumIdx;
OffsetPortalType Offset;
ConnPortalType Connectivity;
};
} // namespace exec
/*
* Control side base object.
*/
namespace cont
{
class CellInterpolationHelper : public vtkm::cont::ExecutionObjectBase
{
public:
using HandleType = vtkm::cont::VirtualObjectHandle<vtkm::exec::CellInterpolationHelper>;
virtual ~CellInterpolationHelper() = default;
VTKM_CONT virtual const vtkm::exec::CellInterpolationHelper* PrepareForExecution(
vtkm::cont::DeviceAdapterId device) const = 0;
};
class StructuredCellInterpolationHelper : public vtkm::cont::CellInterpolationHelper
{
public:
using Structured2DType = vtkm::cont::CellSetStructured<2>;
using Structured3DType = vtkm::cont::CellSetStructured<3>;
StructuredCellInterpolationHelper() = default;
VTKM_CONT
StructuredCellInterpolationHelper(const vtkm::cont::DynamicCellSet& cellSet)
{
if (cellSet.IsSameType(Structured2DType()))
{
this->Is3D = false;
vtkm::Id2 cellDims =
cellSet.Cast<Structured2DType>().GetSchedulingRange(vtkm::TopologyElementTagCell());
vtkm::Id2 pointDims =
cellSet.Cast<Structured2DType>().GetSchedulingRange(vtkm::TopologyElementTagPoint());
this->CellDims = vtkm::Id3(cellDims[0], cellDims[1], 0);
this->PointDims = vtkm::Id3(pointDims[0], pointDims[1], 1);
}
else if (cellSet.IsSameType(Structured3DType()))
{
this->Is3D = true;
this->CellDims =
cellSet.Cast<Structured3DType>().GetSchedulingRange(vtkm::TopologyElementTagCell());
this->PointDims =
cellSet.Cast<Structured3DType>().GetSchedulingRange(vtkm::TopologyElementTagPoint());
}
else
throw vtkm::cont::ErrorBadType("Cell set is not structured type");
}
VTKM_CONT
const vtkm::exec::CellInterpolationHelper* PrepareForExecution(
vtkm::cont::DeviceAdapterId deviceId) const override
{
auto& tracker = vtkm::cont::GetRuntimeDeviceTracker();
const bool valid = tracker.CanRunOn(deviceId);
if (!valid)
{
throwFailedRuntimeDeviceTransfer("StructuredCellInterpolationHelper", deviceId);
}
using ExecutionType = vtkm::exec::StructuredCellInterpolationHelper;
ExecutionType* execObject = new ExecutionType(this->CellDims, this->PointDims, this->Is3D);
this->ExecHandle.Reset(execObject);
return this->ExecHandle.PrepareForExecution(deviceId);
}
private:
vtkm::Id3 CellDims;
vtkm::Id3 PointDims;
bool Is3D = true;
mutable HandleType ExecHandle;
};
class SingleCellExplicitInterpolationHelper : public vtkm::cont::CellInterpolationHelper
{
public:
using SingleExplicitType = vtkm::cont::CellSetSingleType<>;
SingleCellExplicitInterpolationHelper() = default;
VTKM_CONT
SingleCellExplicitInterpolationHelper(const vtkm::cont::DynamicCellSet& cellSet)
{
if (cellSet.IsSameType(SingleExplicitType()))
{
SingleExplicitType CellSet = cellSet.Cast<SingleExplicitType>();
CellShape =
CellSet.GetShapesArray(vtkm::TopologyElementTagCell(), vtkm::TopologyElementTagPoint())
.GetPortalConstControl()
.Get(0);
PointsPerCell =
CellSet.GetNumIndicesArray(vtkm::TopologyElementTagCell(), vtkm::TopologyElementTagPoint())
.GetPortalConstControl()
.Get(0);
Connectivity = CellSet.GetConnectivityArray(vtkm::TopologyElementTagCell(),
vtkm::TopologyElementTagPoint());
}
else
throw vtkm::cont::ErrorBadType("Cell set is not CellSetSingleType");
}
struct SingleCellExplicitFunctor
{
template <typename DeviceAdapter>
VTKM_CONT bool operator()(
DeviceAdapter,
const vtkm::cont::SingleCellExplicitInterpolationHelper& contInterpolator,
HandleType& execInterpolator) const
{
using ExecutionType = vtkm::exec::SingleCellExplicitInterpolationHelper<DeviceAdapter>;
ExecutionType* execObject = new ExecutionType(
contInterpolator.CellShape, contInterpolator.PointsPerCell, contInterpolator.Connectivity);
execInterpolator.Reset(execObject);
return true;
}
};
VTKM_CONT
const vtkm::exec::CellInterpolationHelper* PrepareForExecution(
vtkm::cont::DeviceAdapterId deviceId) const override
{
const bool success = vtkm::cont::TryExecuteOnDevice(
deviceId, SingleCellExplicitFunctor(), *this, this->ExecHandle);
if (!success)
{
throwFailedRuntimeDeviceTransfer("SingleCellExplicitInterpolationHelper", deviceId);
}
return this->ExecHandle.PrepareForExecution(deviceId);
}
private:
vtkm::UInt8 CellShape;
vtkm::IdComponent PointsPerCell;
vtkm::cont::ArrayHandle<vtkm::Id> Connectivity;
mutable HandleType ExecHandle;
};
class CellExplicitInterpolationHelper : public vtkm::cont::CellInterpolationHelper
{
public:
CellExplicitInterpolationHelper() = default;
VTKM_CONT
CellExplicitInterpolationHelper(const vtkm::cont::DynamicCellSet& cellSet)
{
if (cellSet.IsSameType(vtkm::cont::CellSetExplicit<>()))
{
vtkm::cont::CellSetExplicit<> CellSet = cellSet.Cast<vtkm::cont::CellSetExplicit<>>();
Shape =
CellSet.GetShapesArray(vtkm::TopologyElementTagCell(), vtkm::TopologyElementTagPoint());
NumIdx =
CellSet.GetNumIndicesArray(vtkm::TopologyElementTagCell(), vtkm::TopologyElementTagPoint());
Offset = CellSet.GetIndexOffsetArray(vtkm::TopologyElementTagCell(),
vtkm::TopologyElementTagPoint());
Connectivity = CellSet.GetConnectivityArray(vtkm::TopologyElementTagCell(),
vtkm::TopologyElementTagPoint());
}
else
throw vtkm::cont::ErrorBadType("Cell set is not CellSetSingleType");
}
struct SingleCellExplicitFunctor
{
template <typename DeviceAdapter>
VTKM_CONT bool operator()(DeviceAdapter,
const vtkm::cont::CellExplicitInterpolationHelper& contInterpolator,
HandleType& execInterpolator) const
{
using ExecutionType = vtkm::exec::CellExplicitInterpolationHelper<DeviceAdapter>;
ExecutionType* execObject = new ExecutionType(contInterpolator.Shape,
contInterpolator.NumIdx,
contInterpolator.Offset,
contInterpolator.Connectivity);
execInterpolator.Reset(execObject);
return true;
}
};
VTKM_CONT
const vtkm::exec::CellInterpolationHelper* PrepareForExecution(
vtkm::cont::DeviceAdapterId deviceId) const override
{
const bool success = vtkm::cont::TryExecuteOnDevice(
deviceId, SingleCellExplicitFunctor(), *this, this->ExecHandle);
if (!success)
{
throwFailedRuntimeDeviceTransfer("SingleCellExplicitInterpolationHelper", deviceId);
}
return this->ExecHandle.PrepareForExecution(deviceId);
}
private:
vtkm::cont::ArrayHandle<vtkm::UInt8> Shape;
vtkm::cont::ArrayHandle<vtkm::IdComponent> NumIdx;
vtkm::cont::ArrayHandle<vtkm::Id> Offset;
vtkm::cont::ArrayHandle<vtkm::Id> Connectivity;
mutable HandleType ExecHandle;
};
} //namespace cont
} //namespace vtkm
#endif //vtk_m_worklet_particle_advection_cell_interpolation_helper