frame_stats.h

#pragma once

#include "core/debug/debug_window.h"
#include "util/string.h"
#include "util/map.h"
#include "util/ring_buffer.h"
#include "util/utility.h"
#include "util/vector.h"
#include "renderer/imgui/imgui.h"

#define BLOWBOX_PROFILER_HISTORY_MAX_SAMPLE_COUNT 2000
#define BLOWBOX_PROFILER_HISTORY_MIN_SAMPLE_COUNT 2

namespace blowbox
{
    class GpuResource;

    class FrameStats : public DebugWindow
    {
    public:
        FrameStats();
        ~FrameStats();

        void RenderMenu() override;

        void RenderWindow() override;

        void NewFrame();

    private:
        float last_bounds_reset_time_;                                                      
        float bounds_reset_interval_;                                                       
        int history_sample_count_;                                                          

    private:
        bool show_window_;                                                                  
        RingBuffer<float> delta_time_history_;                                              
        float delta_time_history_contiguous_[BLOWBOX_PROFILER_HISTORY_MAX_SAMPLE_COUNT];    
        float delta_times_upper_bound_;                                                     
        float delta_times_lower_bound_;                                                     
        float average_delta_time_;                                                          

        float fps_history_contiguous_[BLOWBOX_PROFILER_HISTORY_MAX_SAMPLE_COUNT];           

        int view_frame_stats_as_fps_;                                                       
    };
}