#include <SDL2/SDL.h>

#include "MCANV.h"

int main()
{
    if (SDL_Init(SDL_INIT_EVERYTHING)!=0)
        return -1;

    SDL_Window *wnd=SDL_CreateWindow(
        "KANKA TITLE MY",
        SDL_WINDOWPOS_UNDEFINED,
        SDL_WINDOWPOS_UNDEFINED,
        1280,
        960,
        SDL_WINDOW_SHOWN);
    if (!wnd)
        return -1;

    SDL_Renderer *rdr=SDL_CreateRenderer(
        wnd,
        -1,
        SDL_RENDERER_ACCELERATED|
        SDL_RENDERER_PRESENTVSYNC);
    if (!rdr)
        return -1;

    MCANVINFO mci={
        .width=800,
        .height=600,
        .std_font=std_font,
    };
    MCANV *canv=MCANV_Alloc(&mci;);

    SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY,"1");
    SDL_Texture *canv_txr=SDL_CreateTexture(
        rdr,
        SDL_PIXELFORMAT_ABGR8888,
        SDL_TEXTUREACCESS_STREAMING,
        canv->info.width,
        canv->info.height);
    if (!canv_txr)
        return -1;


    unsigned long freq=SDL_GetPerformanceFrequency();
    unsigned long time0=0,time1=SDL_GetPerformanceCounter();
    float dt=0.0f;

    SDL_Event evnt;
    bool done=false;
    while (!done) {
        time1=SDL_GetPerformanceCounter();
        dt=(float)(time1-time0)/(float)freq;
        time0=time1;
        while (SDL_PollEvent(&evnt;)) {
            if (evnt.type==SDL_QUIT)
                done=true;
        }

        canv->color=STD_PALETTE_BLACK;
        MCANV_Fill(canv);


        canv->color=STD_PALETTE_YELLOW;
        MCANV_PrintFmt(canv,
            canv->info.width-14*STD_FONT_WIDTH,
            canv->info.height-2*STD_FONT_HEIGHT,
            "dt:  %.4fnfps: %.3f",
            dt,1.0f/dt);

        SDL_UpdateTexture(canv_txr,NULL,canv->buff,canv->pitch);
        SDL_RenderCopy(rdr,canv_txr,NULL,NULL);
        SDL_RenderPresent(rdr);
    }
    
    MCANV_Free(canv);

    SDL_DestroyTexture(canv_txr);
    SDL_DestroyRenderer(rdr);
    SDL_DestroyWindow(wnd);
    SDL_Quit();
    return 0;
}