1 /*
2 * Copyright © 2011 Intel Corporation
3 *
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:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
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
22 * SOFTWARE.
23 *
24 * Author: Chris Wilson <chris@chris-wilson.co.uk>
25 */
26
27 #include "cairo-perf.h"
28
29 static uint32_t state;
30
31 static double
uniform_random(double minval,double maxval)32 uniform_random (double minval, double maxval)
33 {
34 static uint32_t const poly = 0x9a795537U;
35 uint32_t n = 32;
36 while (n-->0)
37 state = 2*state < state ? (2*state ^ poly) : 2*state;
38 return minval + state * (maxval - minval) / 4294967296.0;
39 }
40
41 static cairo_time_t
do_many_curves_stroked(cairo_t * cr,int width,int height,int loops)42 do_many_curves_stroked (cairo_t *cr, int width, int height, int loops)
43 {
44 int count;
45
46 state = 0xc0ffee;
47 cairo_move_to (cr, uniform_random (0, width), uniform_random (0, height));
48 for (count = 0; count < 1000; count++) {
49 double x1 = uniform_random (0, width);
50 double x2 = uniform_random (0, width);
51 double x3 = uniform_random (0, width);
52 double y1 = uniform_random (0, height);
53 double y2 = uniform_random (0, height);
54 double y3 = uniform_random (0, height);
55 cairo_curve_to (cr, x1, y1, x2, y2, x3, y3);
56 }
57
58 cairo_perf_timer_start ();
59
60 while (loops--)
61 cairo_stroke_preserve (cr);
62
63 cairo_perf_timer_stop ();
64
65 cairo_new_path (cr);
66
67 return cairo_perf_timer_elapsed ();
68 }
69
70 static cairo_time_t
do_many_curves_hair_stroked(cairo_t * cr,int width,int height,int loops)71 do_many_curves_hair_stroked (cairo_t *cr, int width, int height, int loops)
72 {
73 cairo_set_line_width (cr, 1.);
74 return do_many_curves_stroked (cr, width, height, loops);
75 }
76
77 static cairo_time_t
do_many_curves_wide_stroked(cairo_t * cr,int width,int height,int loops)78 do_many_curves_wide_stroked (cairo_t *cr, int width, int height, int loops)
79 {
80 cairo_set_line_width (cr, 5.);
81 return do_many_curves_stroked (cr, width, height, loops);
82 }
83
84 static cairo_time_t
do_many_curves_filled(cairo_t * cr,int width,int height,int loops)85 do_many_curves_filled (cairo_t *cr, int width, int height, int loops)
86 {
87 int count;
88
89 state = 0xc0ffee;
90 for (count = 0; count < 1000; count++) {
91 double x0 = uniform_random (0, width);
92 double x1 = uniform_random (0, width);
93 double x2 = uniform_random (0, width);
94 double x3 = uniform_random (0, width);
95 double xm = uniform_random (0, width);
96 double xn = uniform_random (0, width);
97 double y0 = uniform_random (0, height);
98 double y1 = uniform_random (0, height);
99 double y2 = uniform_random (0, height);
100 double y3 = uniform_random (0, height);
101 double ym = uniform_random (0, height);
102 double yn = uniform_random (0, height);
103 cairo_move_to (cr, xm, ym);
104 cairo_curve_to (cr, x1, y1, x2, y2, xn, yn);
105 cairo_curve_to (cr, x3, y3, x0, y0, xm, ym);
106 cairo_close_path (cr);
107 }
108
109 cairo_perf_timer_start ();
110
111 while (loops--)
112 cairo_fill_preserve (cr);
113
114 cairo_perf_timer_stop ();
115
116 cairo_new_path (cr);
117
118 return cairo_perf_timer_elapsed ();
119 }
120
121 cairo_bool_t
many_curves_enabled(cairo_perf_t * perf)122 many_curves_enabled (cairo_perf_t *perf)
123 {
124 return cairo_perf_can_run (perf, "many-curves", NULL);
125 }
126
127 void
many_curves(cairo_perf_t * perf,cairo_t * cr,int width,int height)128 many_curves (cairo_perf_t *perf, cairo_t *cr, int width, int height)
129 {
130 cairo_set_source_rgb (cr, 1., 1., 1.);
131
132 cairo_perf_run (perf, "many-curves-hair-stroked", do_many_curves_hair_stroked, NULL);
133 cairo_perf_run (perf, "many-curves-wide-stroked", do_many_curves_wide_stroked, NULL);
134 cairo_perf_run (perf, "many-curves-filled", do_many_curves_filled, NULL);
135 }
136