82 lines
No EOL
2.7 KiB
C++
82 lines
No EOL
2.7 KiB
C++
/*
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* Benchmark class
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*
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* Copyright (C) 2016-2017 by Sascha Willems - www.saschawillems.de
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*
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* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
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*/
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#include <vector>
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#include <string>
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#include <algorithm>
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#include <limits>
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#include <functional>
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#include <chrono>
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#include <iomanip>
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namespace vks
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{
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class Benchmark {
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public:
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bool active = false;
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uint32_t framesPerIteration = 1000;
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uint32_t iterations = 10;
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std::vector<double> iterationTimes;
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std::string filename = "benchmarkresults.csv";
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Benchmark() {
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active = true;
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iterationTimes.resize(iterations);
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#if defined(_WIN32)
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AttachConsole(ATTACH_PARENT_PROCESS);
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FILE *stream;
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freopen_s(&stream, "CONOUT$", "w+", stdout);
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freopen_s(&stream, "CONOUT$", "w+", stderr);
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#endif
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}
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void run(std::function<void()> renderFunc) {
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static uint32_t currIteration;
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for (uint32_t i = 0; i < iterations; i++) {
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for (uint32_t f = 0; f < framesPerIteration; f++) {
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auto tStart = std::chrono::high_resolution_clock::now();
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renderFunc();
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auto tEnd = std::chrono::high_resolution_clock::now();
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auto tDiff = std::chrono::duration<double, std::milli>(tEnd - tStart).count();
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double frameTime = (double)tDiff / 1000.0;
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iterationTimes[i] += frameTime;
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}
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}
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}
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void saveResults(std::string appinfo, std::string deviceinfo) {
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std::ofstream result(filename, std::ios::out);
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if (result.is_open()) {
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double tMin = *std::min_element(iterationTimes.begin(), iterationTimes.end());
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double tMax = *std::max_element(iterationTimes.begin(), iterationTimes.end());
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double tAvg = std::accumulate(iterationTimes.begin(), iterationTimes.end(), 0.0) / iterations;
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result << std::fixed << std::setprecision(3);
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result << appinfo << std::endl;
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result << deviceinfo << std::endl;
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result << ",iterations,time(ms),fps" << std::endl;;
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for (size_t i = 0; i < iterationTimes.size(); i++) {
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result << "," << i << "," << iterationTimes[i] << "," << (framesPerIteration / iterationTimes[i]) << std::endl;
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}
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result << ",summary" << std::endl;
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result << ",,time(ms),fps" << std::endl;
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result << ",min," << tMin << "," << (1000.0 / tMin) << std::endl;
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result << ",max," << tMax << "," << (1000.0 / tMax) << std::endl;
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result << ",avg," << tAvg << "," << (1000.0 / tAvg) << std::endl;
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// Output averages to stdout
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std::cout << std::fixed << std::setprecision(3);
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std::cout << "best : " << (1000.0 / tMin) << " fps (" << tMin << " ms)" << std::endl;
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std::cout << "worst: " << (1000.0 / tMax) << " fps (" << tMax << " ms)" << std::endl;
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std::cout << "avg : " << (1000.0 / tAvg) << " fps (" << tAvg << " ms)" << std::endl;
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}
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}
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};
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} |