PerfInfo.h

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// Copyright © 2008-2023 Pioneer Developers. See AUTHORS.txt for details
// Licensed under the terms of the GPL v3. See licenses/GPL-3.txt
 
#pragma once
 
#include "PerfStats.h"
#include "RefCounted.h"
#include <array>
#include <memory>
 
namespace PiGui {
 
    class PerfInfo {
    public:
        PerfInfo();
        ~PerfInfo();
 
        enum CounterType {
            COUNTER_FPS,
            COUNTER_PHYS,
            COUNTER_PIGUI
        };
 
        // Information about the current process memory usage in KB.
        struct MemoryInfo {
            size_t currentMemSize;
            size_t peakMemSize;
        };
        struct ImGuiState;
 
        void Draw();
 
        // Update with current frame and physics update time in ms
        void UpdateCounter(CounterType counter, float counterTime);
        void ClearCounter(CounterType counter);
 
        void Update(float deltaTime);
        void UpdateFrameInfo(int framesThisSecond, int physFramesThisSecond);
 
        void SetShowDebugInfo(bool open);
        void SetUpdatePause(bool pause);
 
    private:
        void DrawPerfWindow();
        void DrawTextureCache();
        void DrawTextureInspector();
 
        void DrawRendererStats();
        void DrawWorldViewStats();
        void DrawImGuiStats();
        void DrawInputDebug();
        void DrawStatList(const Perf::Stats::FrameInfo &fi);
 
        static const int NUM_FRAMES = 60;
        struct CounterInfo {
            std::array<float, NUM_FRAMES> history;
            float average = 0.;
            float min = 0.;
            float max = 0.;
        };
 
        CounterInfo &GetCounter(CounterType ct);
 
        CounterInfo m_fpsCounter;
        CounterInfo m_physCounter;
        CounterInfo m_piguiCounter;
 
        MemoryInfo process_mem;
        size_t lua_mem = 0;
        float framesThisSecond = 0;
        float physFramesThisSecond = 0;
 
        float lastUpdateTime = 0;
 
        ImGuiState *m_state;
    };
 
} // namespace PiGui