mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-07-06 07:17:25 +00:00
135 lines
4.0 KiB
C++
135 lines
4.0 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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//
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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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#include "Benchmarker.h"
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#include <vtkm/TypeTraits.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/Initialize.h>
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#include <vtkm/cont/Timer.h>
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#include <vtkm/source/Tangle.h>
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#include <vtkm/rendering/Camera.h>
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#include <vtkm/rendering/CanvasRayTracer.h>
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#include <vtkm/rendering/raytracing/Ray.h>
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#include <vtkm/rendering/raytracing/RayTracer.h>
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#include <vtkm/rendering/raytracing/TriangleExtractor.h>
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#include <sstream>
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#include <string>
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#include <vector>
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namespace
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{
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// Hold configuration state (e.g. active device)
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vtkm::cont::InitializeResult Config;
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void BenchRayTracing(::benchmark::State& state)
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{
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vtkm::source::Tangle maker;
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maker.SetPointDimensions({ 128, 128, 128 });
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vtkm::cont::DataSet dataset = maker.Execute();
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vtkm::cont::CoordinateSystem coords = dataset.GetCoordinateSystem();
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vtkm::rendering::Camera camera;
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vtkm::Bounds bounds = dataset.GetCoordinateSystem().GetBounds();
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camera.ResetToBounds(bounds);
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vtkm::cont::UnknownCellSet cellset = dataset.GetCellSet();
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vtkm::rendering::raytracing::TriangleExtractor triExtractor;
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triExtractor.ExtractCells(cellset);
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auto triIntersector = std::make_shared<vtkm::rendering::raytracing::TriangleIntersector>(
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vtkm::rendering::raytracing::TriangleIntersector());
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vtkm::rendering::raytracing::RayTracer tracer;
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triIntersector->SetData(coords, triExtractor.GetTriangles());
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tracer.AddShapeIntersector(triIntersector);
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vtkm::rendering::CanvasRayTracer canvas(1920, 1080);
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vtkm::rendering::raytracing::Camera rayCamera;
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rayCamera.SetParameters(camera, vtkm::Int32(canvas.GetWidth()), vtkm::Int32(canvas.GetHeight()));
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vtkm::rendering::raytracing::Ray<vtkm::Float32> rays;
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rayCamera.CreateRays(rays, coords.GetBounds());
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rays.Buffers.at(0).InitConst(0.f);
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vtkm::cont::Field field = dataset.GetField("tangle");
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vtkm::Range range = field.GetRange().ReadPortal().Get(0);
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tracer.SetField(field, range);
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vtkm::cont::ArrayHandle<vtkm::Vec4ui_8> temp;
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vtkm::cont::ColorTable table("cool to warm");
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table.Sample(100, temp);
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vtkm::cont::ArrayHandle<vtkm::Vec4f_32> colors;
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colors.Allocate(100);
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auto portal = colors.WritePortal();
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auto colorPortal = temp.ReadPortal();
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constexpr vtkm::Float32 conversionToFloatSpace = (1.0f / 255.0f);
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for (vtkm::Id i = 0; i < 100; ++i)
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{
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auto color = colorPortal.Get(i);
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vtkm::Vec4f_32 t(color[0] * conversionToFloatSpace,
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color[1] * conversionToFloatSpace,
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color[2] * conversionToFloatSpace,
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color[3] * conversionToFloatSpace);
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portal.Set(i, t);
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}
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tracer.SetColorMap(colors);
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tracer.Render(rays);
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vtkm::cont::Timer timer{ Config.Device };
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for (auto _ : state)
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{
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(void)_;
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timer.Start();
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rayCamera.CreateRays(rays, coords.GetBounds());
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tracer.Render(rays);
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timer.Stop();
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state.SetIterationTime(timer.GetElapsedTime());
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}
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}
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VTKM_BENCHMARK(BenchRayTracing);
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} // end namespace vtkm::benchmarking
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int main(int argc, char* argv[])
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{
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auto opts = vtkm::cont::InitializeOptions::RequireDevice;
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std::vector<char*> args(argv, argv + argc);
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vtkm::bench::detail::InitializeArgs(&argc, args, opts);
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// Parse VTK-m options:
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Config = vtkm::cont::Initialize(argc, args.data(), opts);
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// This occurs when it is help
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if (opts == vtkm::cont::InitializeOptions::None)
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{
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std::cout << Config.Usage << std::endl;
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}
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else
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{
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vtkm::cont::GetRuntimeDeviceTracker().ForceDevice(Config.Device);
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}
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// handle benchmarking related args and run benchmarks:
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VTKM_EXECUTE_BENCHMARKS(argc, args.data());
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}
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