mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-19 02:25:42 +00:00
fdaccc22db
Change the VTKM_CONT_EXPORT to VTKM_CONT. (Likewise for EXEC and EXEC_CONT.) Remove the inline from these macros so that they can be applied to everything, including implementations in a library. Because inline is not declared in these modifies, you have to add the keyword to functions and methods where the implementation is not inlined in the class.
143 lines
4.7 KiB
C++
143 lines
4.7 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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#include <iostream>
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#include <vtkm/Math.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/RuntimeDeviceInformation.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/cont/cuda/DeviceAdapterCuda.h>
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#include <vtkm/cont/tbb/DeviceAdapterTBB.h>
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#include <vtkm/cont/serial/DeviceAdapterSerial.h>
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#include <vtkm/cont/TryExecute.h>
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typedef vtkm::Vec< vtkm::Float32, 3 > FloatVec3;
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typedef vtkm::Vec< vtkm::UInt8, 4 > Uint8Vec4;
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struct GenerateSurfaceWorklet : public vtkm::worklet::WorkletMapField
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{
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vtkm::Float32 t;
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GenerateSurfaceWorklet(vtkm::Float32 st) : t(st) {}
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typedef void ControlSignature( FieldIn<>, FieldOut<>, FieldOut<> );
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typedef void ExecutionSignature( _1, _2, _3 );
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template<typename T>
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VTKM_EXEC
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void operator()( const vtkm::Vec< T, 3 > & input,
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vtkm::Vec<T, 3> & output,
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vtkm::Vec<vtkm::UInt8, 4>& color ) const
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{
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output[0] = input[0];
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output[1] = 0.25f * vtkm::Sin( input[0] * 10.f + t ) * vtkm::Cos( input[2] * 10.f + t );
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output[2] = input[2];
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color[0] = 0;
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color[1] = static_cast<vtkm::UInt8>(160 + (96 * vtkm::Sin(input[0] * 10.f + t)));
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color[2] = static_cast<vtkm::UInt8>(160 + (96 * vtkm::Cos(input[2] * 5.f + t)));
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color[3] = 255;
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}
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};
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struct RunGenerateSurfaceWorklet
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{
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template<typename DeviceAdapterTag>
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bool operator()(DeviceAdapterTag ) const
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{
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//At this point we know we have runtime support
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typedef vtkm::cont::DeviceAdapterTraits<DeviceAdapterTag> DeviceTraits;
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typedef vtkm::worklet::DispatcherMapField<GenerateSurfaceWorklet,
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DeviceAdapterTag> DispatcherType;
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std::cout << "Running a worklet on device adapter: "
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<< DeviceTraits::GetName() << std::endl;
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GenerateSurfaceWorklet worklet( 0.05f );
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DispatcherType(worklet).Invoke( this->In,
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this->Out,
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this->Color);
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return true;
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}
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vtkm::cont::ArrayHandle< FloatVec3 > In;
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vtkm::cont::ArrayHandle< FloatVec3 > Out;
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vtkm::cont::ArrayHandle< Uint8Vec4 > Color;
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};
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template<typename T>
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std::vector< vtkm::Vec<T, 3> > make_testData(int size)
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{
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std::vector< vtkm::Vec< T, 3 > > data;
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data.reserve( static_cast<std::size_t>(size*size) );
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for (int i = 0; i < size; ++i )
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{
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for (int j = 0; j < size; ++j )
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{
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data.push_back( vtkm::Vec<T,3>(2.f*static_cast<T>(i/size)-1.f,
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0.f,
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2.f*static_cast<T>(j/size)-1.f));
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}
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}
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return data;
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}
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//This is the list of devices to compile in support for. The order of the
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//devices determines the runtime preference.
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struct DevicesToTry
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: vtkm::ListTagBase<
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vtkm::cont::DeviceAdapterTagCuda,
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vtkm::cont::DeviceAdapterTagTBB,
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vtkm::cont::DeviceAdapterTagSerial> { };
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int main(int, char**)
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{
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std::vector< FloatVec3 > data = make_testData<vtkm::Float32>(1024);
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//make array handles for the data
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// TryExecutes takes a functor and a list of devices. It then tries to run
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// the functor for each device (in the order given in the list) until the
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// execution succeeds. This allows you to compile in support for multiple
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// devices which have runtime requirements ( GPU / HW Accelerator ) and
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// correctly choose the best device at runtime.
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//
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// The functor parentheses operator should take exactly one argument, which is
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// the DeviceAdapterTag to use. The functor should return true if the execution
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// succeeds.
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//
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// This function also optionally takes a vtkm::cont::RuntimeDeviceTracker, which
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// will monitor for certain failures across calls to TryExecute and skip trying
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// devices with a history of failure.
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RunGenerateSurfaceWorklet task;
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task.In = vtkm::cont::make_ArrayHandle(data);
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vtkm::cont::TryExecute(task, DevicesToTry());
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}
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