1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
/*
* Copyright 2008 Chris Wilson
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation, and that the name of
* Chris Wilson not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Chris Wilson makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL CHRIS WILSON BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Author: Chris Wilson <chris@chris-wilson.co.uk>
*/
#include "cairo-test.h"
static cairo_surface_t *
create_source (cairo_surface_t *target, int width, int height)
{
cairo_surface_t *similar;
cairo_t *cr;
similar = cairo_surface_create_similar (target,
CAIRO_CONTENT_ALPHA,
width, height);
cr = cairo_create (similar);
cairo_surface_destroy (similar);
cairo_set_source_rgba (cr, 1, 0, 0, .5);
cairo_paint (cr);
similar = cairo_surface_reference (cairo_get_target (cr));
cairo_destroy (cr);
return similar;
}
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_surface_t *source;
source = create_source (cairo_get_target (cr), width, height);
cairo_set_source_surface (cr, source, 0, 0);
cairo_surface_destroy (source);
cairo_paint (cr);
return CAIRO_TEST_SUCCESS;
}
/*
* XFAIL: discrepancy between backends in applying color components of a pure
* alpha surface
*/
CAIRO_TEST (alpha_similar,
"Tests creation of similar alpha surfaces"
"\nApplication of a pure-alpha similar source is inconsistent across backends.",
"alpha, similar", /* keywords */
NULL, /* requirements */
10, 10,
NULL, draw)
|
