97 lines
3.5 KiB
C++
97 lines
3.5 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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// 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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// Copyright 2014 Sandia Corporation.
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// Copyright 2014 UT-Battelle, LLC.
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// Copyright 2014 Los Alamos National Security.
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//
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// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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// the U.S. Government retains certain rights in this software.
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//
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// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
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// Laboratory (LANL), the U.S. Government retains certain rights in
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// this software.
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//============================================================================
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#ifndef vtk_m_worklet_Dispatcher_MapField_h
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#define vtk_m_worklet_Dispatcher_MapField_h
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#include <vtkm/cont/DeviceAdapter.h>
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#include <vtkm/worklet/WorkletMapField.h>
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#include <vtkm/worklet/internal/DispatcherBase.h>
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namespace vtkm {
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namespace worklet {
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/// \brief Dispatcher for worklets that inherit from \c WorkletMapField.
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///
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template<typename WorkletType,
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typename Device = VTKM_DEFAULT_DEVICE_ADAPTER_TAG>
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class DispatcherMapField :
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public vtkm::worklet::internal::DispatcherBase<
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DispatcherMapField<WorkletType,Device>,
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WorkletType,
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vtkm::worklet::WorkletMapField>
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{
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typedef vtkm::worklet::internal::DispatcherBase<
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DispatcherMapField<WorkletType,Device>,
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WorkletType,
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vtkm::worklet::WorkletMapField> Superclass;
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public:
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VTKM_CONT_EXPORT
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DispatcherMapField(const WorkletType &worklet = WorkletType())
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: Superclass(worklet) { }
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template<typename Invocation>
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VTKM_CONT_EXPORT
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void DoInvoke(const Invocation &invocation) const
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{
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// This is the type for the input domain
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typedef typename Invocation::InputDomainType InputDomainType;
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typedef typename Invocation::OutputDomainType OutputDomainType;
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// We can pull the input domain parameter (the data specifying the input
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// domain) from the invocation object.
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const InputDomainType &inputDomain = invocation.GetInputDomain();
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const OutputDomainType &outputDomain = invocation.GetOutputDomain();
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// For a DispatcherMapField, the inputDomain must be an ArrayHandle (or
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// a DynamicArrayHandle that gets cast to one). The size of the domain
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// (number of threads/worklet instances) is equal to the size of the
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// array.
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vtkm::Id nBlocks = 2;
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vtkm::Id blockSize = inputDomain.GetNumberOfValues() / nBlocks;
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outputDomain.Allocate(inputDomain.GetNumberOfValues());
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for (vtkm::Id block=0; block<nBlocks; block++)
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{
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vtkm::cont::ArrayHandleStreaming<vtkm::cont::ArrayHandle<vtkm::Float32> >
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inputStream(inputDomain, block, blockSize);
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vtkm::cont::ArrayHandleStreaming<vtkm::cont::ArrayHandle<vtkm::Float32> >
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outputStream(outputDomain, block, blockSize);
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// A MapField is a pretty straightforward dispatch. Once we know the number
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// of invocations, the superclass can take care of the rest.
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this->BasicInvoke(
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invocation.ChangeParameters(
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invocation.Parameters.template Replace<Invocation::InputDomainIndex>(inputStream)
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.template Replace<Invocation::OutputDomainIndex>(outputStream)),
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blockSize,
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Device());
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outputStream.SyncControlArray();
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}
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}
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};
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}
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} // namespace vtkm::worklet
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#endif //vtk_m_worklet_Dispatcher_MapField_h
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