Function renderBenchmarkLegacy

tutorials/common/tutorial/benchmark_render.h:63–149

template<class Tutorial>
static void renderBenchmarkLegacy(BenchState& state, BenchParams& params ,int argc, char** argv)
{
  Tutorial tutorial;
  tutorial.interactive = false;
  tutorial.main(argc,argv);

  tutorial.resize(tutorial.width, tutorial.height);
  ISPCCamera ispccamera = tutorial.camera.getISPCCamera(tutorial.width, tutorial.height);

  IOStreamStateRestorer cout_state(std::cout);
  std::cout.setf(std::ios::fixed, std::ios::floatfield);
  std::cout.precision(4);

  //Statistics stat;
  FilteredStatistics fpsStat(0.5f,0.0f);
  FilteredStatistics mraypsStat(0.5f,0.0f);
  {
    size_t numTotalFrames = params.skipIterations + params.minTimeOrIterations;
    for (size_t i=0; i<params.skipIterations; i++)
    {
      tutorial.initRayStats();
      double t0 = getSeconds();
      tutorial.render(tutorial.pixels,tutorial.width,tutorial.height,0.0f,ispccamera);
      double t1 = getSeconds();
      double dt = t1-t0;
      if (ispccamera.render_time != 0.0)
	dt = ispccamera.render_time;
      std::cout << "frame [" << std::setw(3) << i << " / " << std::setw(3) << numTotalFrames << "]: " <<  std::setw(8) << 1.0/dt << " fps (skipped)" << std::endl << std::flush;
    }

    for (size_t i=params.skipIterations; i<numTotalFrames; i++)
    {
      tutorial.initRayStats();
      double t0 = getSeconds();
      tutorial.render(tutorial.pixels,tutorial.width,tutorial.height,0.0f,ispccamera);
      double t1 = getSeconds();
      double dt = t1-t0;
      if (ispccamera.render_time != 0.0)
	dt = ispccamera.render_time;

      float fps = float(1.0/dt);
      fpsStat.add(fps);

      float mrayps = float(double(tutorial.getNumRays())/(1000000.0*dt));
      mraypsStat.add(mrayps);

      if (numTotalFrames >= 1024 && (i % 64 == 0))
      {
        double rate = 0;
        if (fpsStat.getAvg() != 0.0) rate = 100.0f*fpsStat.getSigma()/fpsStat.getAvg();

        std::cout << "frame [" << std::setw(3) << i << " / " << std::setw(3) << numTotalFrames << "]: "
                  << std::setw(8) << fps << " fps, "
                  << "min = " << std::setw(8) << fpsStat.getMin() << " fps, "
                  << "avg = " << std::setw(8) << fpsStat.getAvg() << " fps, "
                  << "max = " << std::setw(8) << fpsStat.getMax() << " fps, "
                  << "sigma = " << std::setw(6) << fpsStat.getSigma() << " (" << rate << "%)" << std::endl << std::flush;
      }