YoggieEngine/BarinkEngine/Include/PerfCounter.h

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#pragma once
#include <chrono>
#include <imgui.h>
struct EngineStatistics {
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long long lastSampleTime;
float frameTime;
uint32_t verts;
uint32_t DC;
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long long frames;
long long FPS;
};
extern EngineStatistics* ES;
inline void PerfomanceSamplerInit(){
ES = new EngineStatistics();
ES->frames = 0;
ES->lastSampleTime = 0;
ES->lastSampleTime = std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::high_resolution_clock::now().time_since_epoch()).count();
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}
inline void SamplePerformance(void) {
ES->frames++;
ES->DC = 0;
ES->verts = 0;
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unsigned long long now = std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::high_resolution_clock::now().time_since_epoch()).count();
unsigned long long MilliSecondsPast = now - ES->lastSampleTime;
if (MilliSecondsPast >= 1000) {
ES->frameTime = (float)1000 / ES->frames;
ES->FPS = ES->frames;
ES->frames = 0;
ES->lastSampleTime = now;
}
}
inline void ShowStats() {
ImGui::Begin("Statistics", false, ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove);
ImGui::Text("FPS: %i", ES->FPS);
ImGui::Text("Frame Time: %f", ES->frameTime);
ImGui::Text("Verts: %i", ES->verts);
ImGui::Text("Draw Calls: %i", ES->DC);
ImGui::End();
}