2 * Copyright © 2005 Bertram Felgenhauer
4 * Permission to use, copy, modify, distribute, and sell this software
5 * and its documentation for any purpose is hereby granted without
6 * fee, provided that the above copyright notice appear in all copies
7 * and that both that copyright notice and this permission notice
8 * appear in supporting documentation, and that the name of
9 * the author not be used in advertising or publicity pertaining to
10 * distribution of the software without specific, written prior
11 * permission. The author makes no representations about the
12 * suitability of this software for any purpose. It is provided "as
13 * is" without express or implied warranty.
15 * THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
16 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
17 * FITNESS, IN NO EVENT SHALL THE AUTHOR. BE LIABLE FOR ANY SPECIAL,
18 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
19 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
20 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
21 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23 * Author: Bertram Felgenhauer <int-e@gmx.de>
26 #include "cairo-test.h"
30 * https://bugs.freedesktop.org/show_bug.cgi?id=4137
33 static cairo_test_status_t
34 draw (cairo_t *cr, int width, int height)
36 cairo_set_source_rgb (cr, 1, 1, 1);
39 cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
40 cairo_set_source_rgb (cr, 0, 0, 0);
42 cairo_translate(cr, -300, -300);
43 cairo_scale(cr, 677.0/26, 677.0/26);
44 cairo_translate(cr, 1, 1);
46 /* this should draw a seamless 2x2 rectangle */
47 cairo_rectangle(cr, 11, 11, 1, 1);
48 cairo_rectangle(cr, 11, 12, 1, 1);
49 cairo_rectangle(cr, 12, 11, 1, 1);
50 cairo_rectangle(cr, 12, 12, 1, 1);
52 cairo_set_source_rgb(cr, 0, 0, 0);
55 return CAIRO_TEST_SUCCESS;
58 CAIRO_TEST (rectangle_rounding_error,
59 "This demonstrates (or not) a rounding error that causes a gap between "
60 "two neighbouring rectangles.",
61 "trap", /* keywords */
62 "target=raster", /* requirements */