mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-20 11:05:44 +00:00
d879188de0
Rather than force all dispatchers to be templated on a device adapter, instead use a TryExecute internally within the invoke to select a device adapter. Because this removes the need to declare a device when invoking a worklet, this commit also removes the need to declare a device in several other areas of the code.
94 lines
3.0 KiB
C++
94 lines
3.0 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 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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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-NA0003525 with NTESS,
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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_WarpVector_h
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#define vtk_m_worklet_WarpVector_h
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/DeviceAdapter.h>
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#include <vtkm/worklet/DispatcherMapField.h>
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#include <vtkm/worklet/WorkletMapField.h>
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#include <vtkm/VecTraits.h>
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namespace vtkm
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{
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namespace worklet
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{
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// A functor that modify points by moving points along a vector
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// then timing a scale factor. It's a VTK-m version of the vtkWarpVector in VTK.
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// Useful for showing flow profiles or mechanical deformation.
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// This worklet does not modify the input points but generate new point coordinate
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// instance that has been warped.
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class WarpVector
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{
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public:
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class WarpVectorImp : public vtkm::worklet::WorkletMapField
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{
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public:
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using ControlSignature = void(FieldIn<Vec3>, FieldIn<Vec3>, FieldOut<Vec3>);
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using ExecutionSignature = _3(_1, _2);
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VTKM_CONT
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WarpVectorImp(vtkm::FloatDefault scale)
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: Scale(scale)
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{
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}
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VTKM_EXEC
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vtkm::Vec<vtkm::FloatDefault, 3> operator()(
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const vtkm::Vec<vtkm::FloatDefault, 3>& point,
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const vtkm::Vec<vtkm::FloatDefault, 3>& vector) const
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{
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return point + this->Scale * vector;
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}
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template <typename T>
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VTKM_EXEC vtkm::Vec<T, 3> operator()(const vtkm::Vec<T, 3>& point,
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const vtkm::Vec<T, 3>& vector) const
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{
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return point + static_cast<T>(this->Scale) * vector;
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}
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private:
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vtkm::FloatDefault Scale;
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};
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// Execute the WarpVector worklet given the points, vector and a scale factor.
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// Returns:
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// warped points
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template <typename PointType, typename VectorType, typename ResultType, typename DeviceAdapter>
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void Run(PointType point,
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VectorType vector,
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vtkm::FloatDefault scale,
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ResultType warpedPoint,
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DeviceAdapter vtkmNotUsed(adapter))
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{
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WarpVectorImp warpVectorImp(scale);
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vtkm::worklet::DispatcherMapField<WarpVectorImp> dispatcher(warpVectorImp);
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dispatcher.SetDevice(DeviceAdapter());
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dispatcher.Invoke(point, vector, warpedPoint);
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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_WarpVector_h
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