46 lines
2.7 KiB
C++
46 lines
2.7 KiB
C++
#include "MetaCorePhysics/MetaCorePhysics.h"
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#include "MetaCoreScene/MetaCoreScene.h"
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#include <chrono>
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#include <cstdlib>
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#include <fstream>
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#include <iostream>
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#if defined(__linux__)
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#include <unistd.h>
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#endif
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namespace {
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double Milliseconds(std::chrono::steady_clock::duration value) {
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return std::chrono::duration<double, std::milli>(value).count();
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}
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std::size_t ResidentBytes() {
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#if defined(__linux__)
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std::ifstream input("/proc/self/statm"); std::size_t pages=0,resident=0;input>>pages>>resident;(void)pages;
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return resident*static_cast<std::size_t>(::sysconf(_SC_PAGESIZE));
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#else
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return 0U;
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#endif
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}
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}
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int main() {
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using namespace MetaCore;
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MetaCoreScene scene;
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for (int y=0;y<100;++y) for(int x=0;x<100;++x) {
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auto object=scene.CreateGameObject("Static");object.GetComponent<MetaCoreTransformComponent>().Position={static_cast<float>(x)*2.0F,static_cast<float>(y)*2.0F,0.0F};object.AddComponent<MetaCoreColliderComponent>();
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}
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for(int index=0;index<100;++index) {
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auto object=scene.CreateGameObject("Dynamic");object.GetComponent<MetaCoreTransformComponent>().Position={static_cast<float>(index%10)*2.0F,static_cast<float>(index/10)*2.0F,5.0F};object.AddComponent<MetaCoreColliderComponent>();object.AddComponent<MetaCoreRigidBodyComponent>().BodyType=MetaCoreRigidBodyType::Dynamic;
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}
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const auto buildBegin=std::chrono::steady_clock::now();MetaCorePhysicsWorld world(scene,MetaCoreBuildDefaultPhysicsSettings());const double buildMs=Milliseconds(std::chrono::steady_clock::now()-buildBegin);
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const auto stepBegin=std::chrono::steady_clock::now();for(int index=0;index<10;++index)world.Step(1.0/60.0);const double stepMs=Milliseconds(std::chrono::steady_clock::now()-stepBegin)/10.0;
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const auto queryBegin=std::chrono::steady_clock::now();for(int index=0;index<1000;++index)(void)world.Raycast({static_cast<float>(index%100)*2.0F,static_cast<float>((index/100)%100)*2.0F,20.0F},{0,0,-1},50.0F);const double queryMs=Milliseconds(std::chrono::steady_clock::now()-queryBegin);
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const double memoryMiB=static_cast<double>(ResidentBytes())/(1024.0*1024.0);
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std::cout<<"PhysicsBenchmark build_ms="<<buildMs<<" step_ms="<<stepMs<<" raycast1000_ms="<<queryMs<<" rss_mib="<<memoryMiB<<'\n';
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// Linux x86_64 reference baseline is recorded in the issue-6 closeout document.
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// Gates are exactly 20% above that baseline and intentionally warn through a failing test.
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constexpr double buildGateMs=62.5,stepGateMs=5.5,queryGateMs=1.45,memoryGateMiB=42.5;
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if(buildMs>buildGateMs||stepMs>stepGateMs||queryMs>queryGateMs||memoryMiB>memoryGateMiB){std::cerr<<"Physics benchmark regressed beyond the 20% gate\n";return EXIT_FAILURE;}
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return EXIT_SUCCESS;
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}
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