2 * Copyright © 2008 Red Hat, Inc.
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 * Author: Carl D. Worth <cworth@cworth.org>
27 #include "cairo-test.h"
30 #define STEP (1.0 / POINTS)
32 #define WIDTH (PAD + POINTS * 2 + PAD)
33 #define HEIGHT (WIDTH)
35 /* A single, black pixel */
36 static const uint32_t black_pixel = 0xff000000;
38 static cairo_test_status_t
39 draw (cairo_t *cr, int width, int height)
42 cairo_surface_t *surface;
44 surface = cairo_image_surface_create_for_data ((unsigned char *) &black_pixel,
48 /* Fill background white */
49 cairo_set_source_rgb (cr, 1, 1, 1);
52 cairo_translate (cr, PAD, PAD);
54 for (i = 0; i < POINTS; i++)
55 for (j = 0; j < POINTS; j++) {
56 cairo_set_source_surface (cr, surface,
57 2 * i + i * STEP, 2 * j + j * STEP);
58 cairo_pattern_set_filter (cairo_get_source (cr),
59 CAIRO_FILTER_NEAREST);
63 cairo_surface_destroy (surface);
65 return CAIRO_TEST_SUCCESS;
68 CAIRO_TEST (a1_image_sample,
69 "Test sample position when drawing images with FILTER_NEAREST",
70 "image, alpha", /* keywords */
71 "target=raster", /* requirements */