/*
  test_nosync_copyarea.c

  Last Update: Sun Oct 27 19:13:04 MET 2002

  by Stefan Kral
  License: GPL Version 2 (or higher)
 */

#include <stdlib.h>
#include <stdio.h>
#include <X11/Xlib.h>

#define FALSE 0

int main(int argc, char **argv)
{
  if (argc < 4) {
    printf("usage: test_copyarea <Width> <Height> <NumberOfFlips>\n");
    return 127;
  } else {
    Display *dpy;
    int width = atoi(argv[1]), height = atoi(argv[2]), iter = atoi(argv[3]);

    if ((dpy = XOpenDisplay(NULL)) == NULL) {
      fprintf(stderr, "cannot open display\n");
      return 1;
    } else {
      Window root = DefaultRootWindow(dpy);
      int screen = DefaultScreen(dpy);
      GC gc1, gc2;
      XGCValues values;
      int j;
      unsigned long black = BlackPixel(dpy, screen);
      unsigned long white = WhitePixel(dpy, screen);
      Window w = XCreateSimpleWindow(dpy, root, 
				     10, 10, width, height, 
				     0, black, white);
      Drawable buf = XCreatePixmap(dpy, w, 
				   width, height, 
				   DefaultDepth(dpy, screen));
      
      values.foreground = BlackPixel(dpy, screen);
      values.background = WhitePixel(dpy, screen);
      gc1 = XCreateGC(dpy, buf, (GCForeground | GCBackground), &values);

      values.foreground = WhitePixel(dpy, screen);
      values.background = BlackPixel(dpy, screen);
      gc2 = XCreateGC(dpy, buf, (GCForeground | GCBackground), &values);

      XSetGraphicsExposures(dpy, gc1, FALSE);
      XSetGraphicsExposures(dpy, gc2, FALSE);
	  
      XMapRaised(dpy, w);
	  
      for (j = 0; j < iter; j++) {
	XFillRectangle(dpy, buf, gc2, 0, 0, width, height);
	XCopyArea(dpy, buf, w, gc2, 0, 0, width, height, 0, 0);

	XFillRectangle(dpy, buf, gc1, 0, 0, width, height);
	XCopyArea(dpy, buf, w, gc2, 0, 0, width, height, 0, 0);
      }
	  
      XFreePixmap(dpy,buf);
	  
      XDestroyWindow(dpy, w); 		// also unmaps the window
      XCloseDisplay(dpy);
	  
      return 0;
    }
  }
}