Attachment 115397 Details for Bug 55296 – Now with a decaying average and wait-for-rendering

Now with a decaying average and wait-for-rendering

test.c (text/plain), 1.78 KB, created by Chris Wilson on 2015-04-28 09:48:12 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Chris Wilson

Created: 2015-04-28 09:48:12 UTC

Size: 1.78 KB

patch

obsolete

>// gcc test.c -lX11 -o test
>#include <X11/Xlib.h>
>#include <stdio.h>
>
>#define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
>
>static void wait_for_rendering(Display *dpy, Window win)
>{
>	XImage *ximage = XGetImage(dpy, win, 0, 0, 1, 1, AllPlanes, ZPixmap);
>	if (ximage != NULL)
>		XDestroyImage(ximage);
>}
>
>int main()
>{
>	Display *dpy;
>	Window win;
>	GC gc;
>	XSetWindowAttributes attr;
>	int width = 1000;
>	int height = 800;
>	int black, white, x, y, i, len;
>	struct timeval t1, t2;
>	char string[300];
>	char buf[256];
>	double time = -1;
>	dpy = XOpenDisplay(NULL);
>
>
>	black = BlackPixel(dpy, DefaultScreen(dpy));
>	white = WhitePixel(dpy, DefaultScreen(dpy));
>
>	attr.override_redirect = True;
>	win = XCreateWindow(dpy, DefaultRootWindow(dpy),
>			    0, 0, width, height, 0,
>			    DefaultDepth(dpy, DefaultScreen(dpy)),
>			    InputOutput,
>			    DefaultVisual(dpy, DefaultScreen(dpy)),
>			    CWOverrideRedirect, &attr);
>	XMapWindow(dpy, win);
>	XSync(dpy, True);
>
>	gc = XCreateGC(dpy, win, 0, NULL);
>
>	for (i = 0; i < 95; i++) {
>		string[i] = i + 32;
>		string[i+95] = i + 32;
>		string[i+95*2] = i + 32;
>	}
>
>	while (1) {
>		gettimeofday(&t1, NULL);
>		for (i = 0; i < 5; i++) {
>			XSetForeground(dpy, gc, white);
>			XFillRectangle(dpy, win, gc, 0, 0, width, height);
>			XSetForeground(dpy, gc, black);
>			XSetBackground(dpy, gc, white);
>			len = sprintf(buf, "%.1f ms", time);
>			XDrawImageString(dpy, win, gc, 5, 15, buf, len);
>			for(y = 0; y < height/15; y ++)
>				for(x = 0; x < width/30; x ++)
>					XDrawImageString(dpy, win, gc, 5 + x*30 , 30 + y*15, "Test", 4);
>		}
>		wait_for_rendering(dpy, win);
>		gettimeofday(&t2, NULL);
>		/* decaying average over ~1s! */
>		if (time < 0)
>			time = TIMEDIFF(t2, t1);
>		else
>			time = (49*time + TIMEDIFF(t2, t1))/50;
>//		printf("%i ms\n", time);
>	}
>
>	return 0;
>}

Actions: View

Attachments on bug 55296: 67652 | 115397 | 115404

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.