1 /*
2 * Copyright © 2007 Chris Wilson.
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 * Chris Wilson. Not be used in advertising or publicity pertaining to
10 * distribution of the software without specific, written prior
11 * permission. Chris Wilson 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 * CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
16 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
17 * FITNESS, IN NO EVENT SHALL CHRIS WILSON 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: Chris Wilson <chris at chris-wilson.co.uk>
24 */
25
26 #if HAVE_CONFIG_H
27 #include "config.h"
28 #endif
29
30 #include "cairo-test.h"
31 #include <stdlib.h> /* drand48() */
32
33 #define LOOPS 10
34 #define NRAND 100
35
36 #ifndef HAVE_DRAND48
37 #define drand48() (rand () / (double) RAND_MAX)
38 #endif
39
40 static cairo_scaled_font_t *scaled_font;
41
42 static cairo_t *
_cairo_create_similar(cairo_t * cr,int width,int height)43 _cairo_create_similar (cairo_t *cr, int width, int height)
44 {
45 cairo_surface_t *similar;
46
47 similar = cairo_surface_create_similar (cairo_get_target (cr),
48 cairo_surface_get_content (cairo_get_target (cr)),
49 width, height);
50 cr = cairo_create (similar);
51 cairo_surface_destroy (similar);
52
53 return cr;
54 }
55
56 static cairo_t *
_cairo_create_image(cairo_t * cr,cairo_format_t format,int width,int height)57 _cairo_create_image (cairo_t *cr, cairo_format_t format, int width, int height)
58 {
59 cairo_surface_t *image;
60
61 image = cairo_image_surface_create (format, width, height);
62 cr = cairo_create (image);
63 cairo_surface_destroy (image);
64
65 return cr;
66 }
67
68 static void
_propagate_status(cairo_t * dst,cairo_t * src)69 _propagate_status (cairo_t *dst, cairo_t *src)
70 {
71 cairo_path_t path;
72
73 path.status = cairo_status (src);
74 if (path.status) {
75 path.num_data = 0;
76 path.data = NULL;
77 cairo_append_path (dst, &path);
78 }
79 }
80
81 static void
_draw(cairo_t * cr,double red,double green,double blue)82 _draw (cairo_t *cr,
83 double red,
84 double green,
85 double blue)
86 {
87 cairo_text_extents_t extents;
88
89 cairo_set_source_rgb (cr, red, green, blue);
90 cairo_paint (cr);
91
92 cairo_move_to (cr, 0, 0);
93 cairo_line_to (cr, 1, 1);
94 cairo_stroke (cr);
95
96 cairo_mask (cr, cairo_get_source (cr));
97
98 cairo_set_scaled_font (cr, scaled_font);
99 cairo_text_extents (cr, "cairo", &extents);
100 cairo_move_to (cr,
101 -extents.x_bearing - .5 * extents.width,
102 -extents.y_bearing - .5 * extents.height);
103 cairo_show_text (cr, "cairo");
104 }
105
106 static void
use_similar(cairo_t * cr,double red,double green,double blue)107 use_similar (cairo_t *cr,
108 double red,
109 double green,
110 double blue)
111 {
112 cairo_t *cr2;
113
114 if (cairo_status (cr))
115 return;
116
117 cr2 = _cairo_create_similar (cr, 1, 1);
118
119 _draw (cr2, red, green, blue);
120
121 _propagate_status (cr, cr2);
122 cairo_destroy (cr2);
123 }
124
125 static void
use_image(cairo_t * cr,cairo_format_t format,double red,double green,double blue)126 use_image (cairo_t *cr,
127 cairo_format_t format,
128 double red,
129 double green,
130 double blue)
131 {
132 cairo_t *cr2;
133
134 if (cairo_status (cr))
135 return;
136
137 cr2 = _cairo_create_image (cr, format, 1, 1);
138
139 _draw (cr2, red, green, blue);
140
141 _propagate_status (cr, cr2);
142 cairo_destroy (cr2);
143 }
144
145 static void
use_solid(cairo_t * cr,double red,double green,double blue)146 use_solid (cairo_t *cr,
147 double red,
148 double green,
149 double blue)
150 {
151 /* mix in dissimilar solids */
152 use_image (cr, CAIRO_FORMAT_A1, red, green, blue);
153 use_image (cr, CAIRO_FORMAT_A8, red, green, blue);
154 use_image (cr, CAIRO_FORMAT_RGB24, red, green, blue);
155 use_image (cr, CAIRO_FORMAT_ARGB32, red, green, blue);
156
157 use_similar (cr, red, green, blue);
158
159 _draw (cr, red, green, blue);
160 }
161
162 static cairo_test_status_t
draw(cairo_t * cr,int width,int height)163 draw (cairo_t *cr, int width, int height)
164 {
165 const cairo_test_context_t *ctx = cairo_test_get_context (cr);
166 cairo_status_t status;
167 const double colors[8][3] = {
168 { 1.0, 0.0, 0.0 }, /* red */
169 { 0.0, 1.0, 0.0 }, /* green */
170 { 1.0, 1.0, 0.0 }, /* yellow */
171 { 0.0, 0.0, 1.0 }, /* blue */
172 { 1.0, 0.0, 1.0 }, /* magenta */
173 { 0.0, 1.0, 1.0 }, /* cyan */
174 { 1.0, 1.0, 1.0 }, /* white */
175 { 0.0, 0.0, 0.0 }, /* black */
176 };
177 int i, j, loop;
178
179 /* cache a resolved scaled-font */
180 scaled_font = cairo_get_scaled_font (cr);
181
182 for (loop = 0; loop < LOOPS; loop++) {
183 for (i = 0; i < LOOPS; i++) {
184 for (j = 0; j < 8; j++) {
185 use_solid (cr, colors[j][0], colors[j][1], colors[j][2]);
186 status = cairo_status (cr);
187 if (status)
188 return cairo_test_status_from_status (ctx, status);
189 }
190 }
191
192 for (i = 0; i < NRAND; i++) {
193 use_solid (cr, drand48 (), drand48 (), drand48 ());
194 status = cairo_status (cr);
195 if (status)
196 return cairo_test_status_from_status (ctx, status);
197 }
198 }
199
200 /* stress test only, so clear the surface before comparing */
201 cairo_set_source_rgb (cr, 0, 0, 1);
202 cairo_paint (cr);
203
204 return CAIRO_TEST_SUCCESS;
205 }
206
207 CAIRO_TEST (solid_pattern_cache_stress,
208 "Stress the solid pattern cache and ensure it behaves",
209 "stress", /* keywords */
210 NULL, /* requirements */
211 1, 1,
212 NULL, draw)
213