2 * Copyright © 2006 Mozilla Corporation
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 * Mozilla Corporation not be used in advertising or publicity pertaining to
10 * distribution of the software without specific, written prior
11 * permission. Mozilla Corporation 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 * MOZILLA CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
16 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
17 * FITNESS, IN NO EVENT SHALL MOZILLA CORPORATION 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: Vladimir Vukicevic <vladimir@pobox.com>
26 #include "cairo-test.h"
28 #define SRC_WIDTH 2048
31 static cairo_surface_t *
32 create_source_surface (int w, int h)
34 cairo_surface_t *surface;
37 surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, SRC_WIDTH, SRC_HEIGHT);
38 cr = cairo_create (surface);
39 cairo_surface_destroy (surface);
41 cairo_set_source_rgb (cr, 1.0, 0.0, 0.0);
42 cairo_rectangle (cr, 0, 0, w/2, h/2);
45 cairo_set_source_rgb (cr, 0.0, 1.0, 0.0);
46 cairo_rectangle (cr, w/2, 0, w/2, h/2);
49 cairo_set_source_rgb (cr, 0.0, 0.0, 1.0);
50 cairo_rectangle (cr, 0, h/2, w/2, h/2);
53 cairo_set_source_rgb (cr, 1.0, 1.0, 0.0);
54 cairo_rectangle (cr, w/2, h/2, w/2, h/2);
57 surface = cairo_surface_reference (cairo_get_target (cr));
64 draw_n (cairo_t *cr, cairo_pattern_t *pat, double dest_size, int n)
68 cairo_matrix_init_scale (&mat, SRC_WIDTH / dest_size, SRC_HEIGHT / dest_size);
69 cairo_matrix_translate (&mat, n * -dest_size, 0.0);
70 cairo_pattern_set_matrix (pat, &mat);
72 cairo_set_source (cr, pat);
74 cairo_rectangle (cr, n * dest_size, 0.0, dest_size, dest_size);
78 static cairo_test_status_t
79 draw (cairo_t *cr, int width, int height)
81 cairo_surface_t *surface;
84 cairo_set_source_rgb (cr, 0, 0, 0);
87 surface = create_source_surface (SRC_WIDTH, SRC_HEIGHT);
89 pat = cairo_pattern_create_for_surface (surface);
90 cairo_surface_destroy (surface);
92 /* We want to draw at a position such that n * SRC_WIDTH * (SRC_WIDTH/16.0) > 32768.
95 * To show the bug, we want to draw on either side of the boundary;
96 * in our case here, n = 16 results in 32768, and n = 17 results in > 32768.
98 * Drawing at 16 and 17 is sufficient to show the problem.
103 draw_n (cr, pat, 16.0, 16);
106 draw_n (cr, pat, 16.0, 17);
110 for (n = 0; n < 32; n++)
111 draw_n (cr, pat, 16.0, n);
115 cairo_pattern_destroy (pat);
117 return CAIRO_TEST_SUCCESS;
120 CAIRO_TEST (surface_pattern_big_scale_down,
121 "Test scaled-down transformed not-repeated surface patterns with large images and offsets",
122 "transform", /* keywords */
123 NULL, /* requirements */