#include <stdio.h>

#include <intuition/screens.h>
#include <exec/memory.h>
#include <devices/timer.h>

#include <clib/timer_protos.h>
#include <clib/exec_protos.h>
#include <clib/intuition_protos.h>

#define WIDTH 320
#define HEIGHT 256
#define BUFSIZE (WIDTH * HEIGHT)

int main(void)
{
    struct Screen *s;

    if (s = OpenScreenTags(NULL,
        SA_DisplayID, LORES_KEY,
        SA_Width, 320,
        SA_Height, 256,
        SA_Depth, 8,
        TAG_DONE))
    {
        UBYTE *buf;

        if (buf = AllocMem(BUFSIZE, MEMF_PUBLIC))
        {
            UBYTE *cur = buf, *end = buf + BUFSIZE;
            struct EClockVal ecv1, ecv2;
            while (cur < end)
            {
                *cur++ = 1;
            }

            ReadEClock(&ecv1);
            WriteChunkyPixels(&s->RastPort, 0, 0, WIDTH - 1, HEIGHT - 1, buf, WIDTH);
            ReadEClock(&ecv2);

            printf("Ticks: %ld\n", ecv2.ev_lo - ecv1.ev_lo);

            FreeMem(buf, BUFSIZE);
        }
        CloseScreen(s);
    }
    return 0;
}