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
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/*
* Copyright © 2011 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "piglit-util-gl-common.h"
/**
* @file samples.c
*
* From the EXT_framebuffer_multisample spec:
*
* "The values of SAMPLE_BUFFERS and SAMPLES are derived from the
* attachments of the currently bound framebuffer object. If the
* current DRAW_FRAMEBUFFER_BINDING_EXT is not "framebuffer
* complete", then both SAMPLE_BUFFERS and SAMPLES are undefined.
* Otherwise, SAMPLES is equal to the value of
* RENDERBUFFER_SAMPLES_EXT for the attached images (which all
* must have the same value for RENDERBUFFER_SAMPLES_EXT).
* Further, SAMPLE_BUFFERS is one if SAMPLES is non-zero.
* Otherwise, SAMPLE_BUFFERS is zero."
*
* See also negative-mismatched-samples.c.
*/
PIGLIT_GL_TEST_MAIN(
32 /*window_width*/,
32 /*window_height*/,
PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_ALPHA)
enum piglit_result
piglit_display(void)
{
/* UNREACHED */
return PIGLIT_FAIL;
}
void
piglit_init(int argc, char **argv)
{
GLint max_samples, sample_buffers, samples, rb_samples;
GLuint rb, fb;
GLenum status;
bool pass = true;
int i;
piglit_require_extension("GL_EXT_framebuffer_multisample");
glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
glGenFramebuffersEXT(1, &fb);
glBindFramebufferEXT(GL_FRAMEBUFFER, fb);
glDrawBuffer(GL_COLOR_ATTACHMENT0);
glReadBuffer(GL_COLOR_ATTACHMENT0);
for (i = 0; i < max_samples; i++) {
glGenRenderbuffersEXT(1, &rb);
glBindRenderbufferEXT(GL_RENDERBUFFER, rb);
glRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER,
max_samples,
GL_RGBA, 1, 1);
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER,
GL_COLOR_ATTACHMENT0,
GL_RENDERBUFFER, rb);
status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER);
if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
fprintf(stderr, "FBO incomplete\n");
piglit_report_result(PIGLIT_FAIL);
}
glGetRenderbufferParameterivEXT(GL_RENDERBUFFER,
GL_RENDERBUFFER_SAMPLES,
&rb_samples);
glGetIntegerv(GL_SAMPLES, &samples);
if (rb_samples != samples) {
fprintf(stderr,
"FBO reported GL_SAMPLES %d for "
"rb samples %d\n",
samples, rb_samples);
pass = false;
}
glGetIntegerv(GL_SAMPLE_BUFFERS, &sample_buffers);
if ((rb_samples != 0) != (sample_buffers == 1)) {
fprintf(stderr,
"FBO reported GL_SAMPLE_BUFFERS %d for "
"rb samples %d\n",
sample_buffers, samples);
pass = false;
}
glDeleteRenderbuffersEXT(1, &rb);
}
glDeleteFramebuffersEXT(1, &fb);
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
|
