1 /*
2 * Copyright © 2006 Red Hat, Inc.
3 *
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 * Red Hat, Inc. not be used in advertising or publicity pertaining to
10 * distribution of the software without specific, written prior
11 * permission. Red Hat, Inc. makes no representations about the
12 * suitability of this software for any purpose. It is provided "as
13 * is" without express or implied warranty.
14 *
15 * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
16 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
17 * FITNESS, IN NO EVENT SHALL RED HAT, INC. 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.
22 *
23 * Author: Carl D. Worth <cworth@cworth.org>
24 */
25
26 #include "cairo-perf.h"
27
28 /* This case exposes a performance bug found by Christopher "Monty"
29 * Montgomery in that copying a tiny portion of an image surface to an
30 * X surface causes the entire image surface to be copied to an
31 * intermediate surface.
32 *
33 * If the performance bug is fixed, then the time this test takes
34 * should be independent of the source and destination surface sizes.
35 */
36
37 static cairo_time_t
do_subimage_copy(cairo_t * cr,int width,int height,int loops)38 do_subimage_copy (cairo_t *cr, int width, int height, int loops)
39 {
40 cairo_rectangle (cr, 2, 2, 4, 4);
41 cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
42
43 cairo_perf_timer_start ();
44
45 while (loops--)
46 cairo_fill_preserve (cr);
47
48 cairo_perf_timer_stop ();
49
50 cairo_new_path (cr);
51
52 return cairo_perf_timer_elapsed ();
53 }
54
55 cairo_bool_t
subimage_copy_enabled(cairo_perf_t * perf)56 subimage_copy_enabled (cairo_perf_t *perf)
57 {
58 return cairo_perf_can_run (perf, "subimage-copy", NULL);
59 }
60
61 void
subimage_copy(cairo_perf_t * perf,cairo_t * cr,int width,int height)62 subimage_copy (cairo_perf_t *perf, cairo_t *cr, int width, int height)
63 {
64 cairo_surface_t *image;
65 cairo_t *cr2;
66
67 cairo_set_source_rgb (cr, 0, 0, 1); /* blue */
68 cairo_paint (cr);
69
70 image = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
71 cr2 = cairo_create (image);
72 cairo_set_source_rgb (cr2, 1, 0, 0); /* red */
73 cairo_paint (cr2);
74 cairo_destroy (cr2);
75
76 cairo_set_source_surface (cr, image, 0, 0);
77 cairo_surface_destroy (image);
78
79 cairo_perf_run (perf, "subimage-copy", do_subimage_copy, NULL);
80 }
81