1 /*
2 * Copyright © 2006 Red Hat, Inc.
3 *
4 *
5 * Permission is hereby granted, free of charge, to any person
6 * obtaining a copy of this software and associated documentation
7 * files (the "Software"), to deal in the Software without
8 * restriction, including without limitation the rights to use, copy,
9 * modify, merge, publish, distribute, sublicense, and/or sell copies
10 * of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be
14 * included in all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
20 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
21 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 * Author: Carl D. Worth <cworth@cworth.org>
26 */
27
28 #include "cairo-perf.h"
29
30 /* This test case is designed to illustrate a performance bug that
31 * exists in cairo in which using cairo_stroke is much slower than
32 * cairo_fill to draw an identical figure, (and in particular a figure
33 * that is much more natural to draw with cairo_stroke). The figure is
34 * a 100x100 square outline 1-pixel wide, nicely pixel aligned.
35 *
36 * The performance bug should affect any path whose resulting contour
37 * consists only of pixel-aligned horizontal and vertical elements.
38 *
39 * Initial testing on on machine shows stroke as 5x slower than fill
40 * for the xlib backend and 16x slower for the image backend.
41 */
42
43 static cairo_time_t
box_outline_stroke(cairo_t * cr,int width,int height,int loops)44 box_outline_stroke (cairo_t *cr, int width, int height, int loops)
45 {
46 cairo_set_source_rgb (cr, 0, 0, 1); /* blue */
47 cairo_paint (cr);
48
49 cairo_rectangle (cr,
50 1.5, 1.5,
51 width - 3, height - 3);
52 cairo_set_line_width (cr, 1.0);
53 cairo_set_source_rgb (cr, 1, 0, 0); /* red */
54
55 cairo_perf_timer_start ();
56
57 while (loops--)
58 cairo_stroke_preserve (cr);
59
60 cairo_perf_timer_stop ();
61
62 cairo_new_path (cr);
63
64 return cairo_perf_timer_elapsed ();
65 }
66
67 static cairo_time_t
box_outline_alpha_stroke(cairo_t * cr,int width,int height,int loops)68 box_outline_alpha_stroke (cairo_t *cr, int width, int height, int loops)
69 {
70 cairo_set_source_rgb (cr, 0, 0, 1); /* blue */
71 cairo_paint (cr);
72
73 cairo_rectangle (cr,
74 1.5, 1.5,
75 width - 3, height - 3);
76 cairo_set_line_width (cr, 1.0);
77 cairo_set_source_rgba (cr, 1, 0, 0, .5); /* red */
78
79 cairo_perf_timer_start ();
80
81 while (loops--)
82 cairo_stroke_preserve (cr);
83
84 cairo_perf_timer_stop ();
85
86 cairo_new_path (cr);
87
88 return cairo_perf_timer_elapsed ();
89 }
90
91 static cairo_time_t
box_outline_aa_stroke(cairo_t * cr,int width,int height,int loops)92 box_outline_aa_stroke (cairo_t *cr, int width, int height, int loops)
93 {
94 cairo_set_source_rgb (cr, 0, 0, 1); /* blue */
95 cairo_paint (cr);
96
97 cairo_translate (cr, .5, .5);
98 cairo_rectangle (cr,
99 1.5, 1.5,
100 width - 3, height - 3);
101 cairo_set_line_width (cr, 1.0);
102 cairo_set_source_rgb (cr, 1, 0, 0); /* red */
103
104 cairo_perf_timer_start ();
105
106 while (loops--)
107 cairo_stroke_preserve (cr);
108
109 cairo_perf_timer_stop ();
110
111 cairo_new_path (cr);
112
113 return cairo_perf_timer_elapsed ();
114 }
115
116 static cairo_time_t
box_outline_fill(cairo_t * cr,int width,int height,int loops)117 box_outline_fill (cairo_t *cr, int width, int height, int loops)
118 {
119 cairo_set_source_rgb (cr, 0, 0, 1); /* blue */
120 cairo_paint (cr);
121
122 cairo_rectangle (cr,
123 1.0, 1.0,
124 width - 2, height - 2);
125 cairo_rectangle (cr,
126 2.0, 2.0,
127 width - 4, height - 4);
128 cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
129 cairo_set_source_rgb (cr, 0, 1, 0); /* green */
130
131 cairo_perf_timer_start ();
132
133 while (loops--)
134 cairo_fill_preserve (cr);
135
136 cairo_perf_timer_stop ();
137
138 cairo_new_path (cr);
139
140 return cairo_perf_timer_elapsed ();
141 }
142
143 static cairo_time_t
box_outline_alpha_fill(cairo_t * cr,int width,int height,int loops)144 box_outline_alpha_fill (cairo_t *cr, int width, int height, int loops)
145 {
146 cairo_set_source_rgb (cr, 0, 0, 1); /* blue */
147 cairo_paint (cr);
148
149 cairo_rectangle (cr,
150 1.0, 1.0,
151 width - 2, height - 2);
152 cairo_rectangle (cr,
153 2.0, 2.0,
154 width - 4, height - 4);
155 cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
156 cairo_set_source_rgba (cr, 0, 1, 0, .5); /* green */
157
158 cairo_perf_timer_start ();
159
160 while (loops--)
161 cairo_fill_preserve (cr);
162
163 cairo_perf_timer_stop ();
164
165 cairo_new_path (cr);
166
167 return cairo_perf_timer_elapsed ();
168 }
169
170 static cairo_time_t
box_outline_aa_fill(cairo_t * cr,int width,int height,int loops)171 box_outline_aa_fill (cairo_t *cr, int width, int height, int loops)
172 {
173 cairo_set_source_rgb (cr, 0, 0, 1); /* blue */
174 cairo_paint (cr);
175
176 cairo_translate (cr, .5, .5);
177 cairo_rectangle (cr,
178 1.0, 1.0,
179 width - 2, height - 2);
180 cairo_rectangle (cr,
181 2.0, 2.0,
182 width - 4, height - 4);
183 cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
184 cairo_set_source_rgb (cr, 0, 1, 0); /* green */
185
186 cairo_perf_timer_start ();
187
188 while (loops--)
189 cairo_fill_preserve (cr);
190
191 cairo_perf_timer_stop ();
192
193 cairo_new_path (cr);
194
195 return cairo_perf_timer_elapsed ();
196 }
197
198 cairo_bool_t
box_outline_enabled(cairo_perf_t * perf)199 box_outline_enabled (cairo_perf_t *perf)
200 {
201 return cairo_perf_can_run (perf, "box-outline", NULL);
202 }
203
204 void
box_outline(cairo_perf_t * perf,cairo_t * cr,int width,int height)205 box_outline (cairo_perf_t *perf, cairo_t *cr, int width, int height)
206 {
207 cairo_perf_run (perf, "box-outline-stroke", box_outline_stroke, NULL);
208 cairo_perf_run (perf, "box-outline-fill", box_outline_fill, NULL);
209
210 cairo_perf_run (perf, "box-outline-alpha-stroke", box_outline_alpha_stroke, NULL);
211 cairo_perf_run (perf, "box-outline-alpha-fill", box_outline_alpha_fill, NULL);
212
213 cairo_perf_run (perf, "box-outline-aa-stroke", box_outline_aa_stroke, NULL);
214 cairo_perf_run (perf, "box-outline-aa-fill", box_outline_aa_fill, NULL);
215 }
216