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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
/*
* Copyright © 2012 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 "common.h"
/**
* \file accuracy.c
*
* Verify the accuracy of multisample antialiasing.
*
* This test utilizes the functions defined in common.cpp to verfify the
* accuracy of MSAA.
*
* The test also accepts the following flags:
*
* - "small": Causes the MSAA image to be renedered in extremely tiny
* (16x16) tiles that are then stitched together. This verifies
* that MSAA works properly on very small buffers (a critical corner
* case on i965).
*
* - "depthstencil": Causes the framebuffers to use a combined
* depth/stencil buffer (as opposed to separate depth and stencil
* buffers). On some implementations (e.g. the nVidia proprietary
* driver for Linux) this is necessary for framebuffer completeness.
* On others (e.g. i965), this is an important corner case to test.
*/
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 10;
config.window_width = 512;
config.window_height = 256;
config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
config.khr_no_error_support = PIGLIT_NO_ERRORS;
PIGLIT_GL_TEST_CONFIG_END
const int pattern_width = 256; const int pattern_height = 256;
const int supersample_factor = 16;
int num_samples, max_samples;
bool small = false, combine_depth_stencil = false;
bool all_samples = false;
GLenum filter_mode = GL_NEAREST;
test_type_enum test_type;
Test *test = NULL;
NORETURN void
print_usage_and_exit(char *prog_name)
{
printf("Usage: %s <sample_arg> <test_type> [options]\n"
" where <sample_arg> is one of:\n"
" <num_samples>: test supplied sample count\n"
" all_samples: test all power of 2 samples\n"
" where <test_type> is one of:\n"
" color: test downsampling of color buffer\n"
" srgb: test downsampling of srgb color buffer\n"
" stencil_draw: test drawing using MSAA stencil buffer\n"
" stencil_resolve: test resolve of MSAA stencil buffer\n"
" depth_draw: test drawing using MSAA depth buffer\n"
" depth_resolve: test resolve of MSAA depth buffer\n"
"Available options:\n"
" small: use a very small (16x16) MSAA buffer\n"
" depthstencil: use a combined depth/stencil buffer\n"
" linear: use GL_LINEAR filter mode\n",
prog_name);
piglit_report_result(PIGLIT_FAIL);
}
void
piglit_init(int argc, char **argv)
{
int i;
if (argc < 3)
print_usage_and_exit(argv[0]);
{
char *endptr = NULL;
if (streq(argv[1], "all_samples"))
all_samples = true;
else {
num_samples = strtol(argv[1], &endptr, 0);
if (endptr != argv[1] + strlen(argv[1]))
print_usage_and_exit(argv[0]);
}
}
for (i = 3; i < argc; ++i) {
if (strcmp(argv[i], "small") == 0) {
small = true;
} else if (strcmp(argv[i], "depthstencil") == 0) {
combine_depth_stencil = true;
} else if (strcmp(argv[i], "linear") == 0) {
filter_mode = GL_LINEAR;
} else {
print_usage_and_exit(argv[0]);
}
}
piglit_require_gl_version(21);
piglit_require_extension("GL_ARB_framebuffer_object");
piglit_require_extension("GL_ARB_vertex_array_object");
/* Skip the test if num_samples > GL_MAX_SAMPLES */
glGetIntegerv(GL_MAX_SAMPLES, &max_samples);
if (num_samples > max_samples)
piglit_report_result(PIGLIT_SKIP);
if (strcmp(argv[2], "color") == 0) {
test_type = TEST_TYPE_COLOR;
} else if (strcmp(argv[2], "srgb") == 0) {
test_type = TEST_TYPE_SRGB;
} else if (strcmp(argv[2], "stencil_draw") == 0) {
test_type = TEST_TYPE_STENCIL_DRAW;
} else if (strcmp(argv[2], "stencil_resolve") == 0) {
test_type = TEST_TYPE_STENCIL_RESOLVE;
} else if (strcmp(argv[2], "depth_draw") == 0) {
test_type = TEST_TYPE_DEPTH_DRAW;
} else if (strcmp(argv[2], "depth_resolve") == 0) {
test_type = TEST_TYPE_DEPTH_RESOLVE;
} else {
print_usage_and_exit(argv[0]);
}
}
bool
test_create_and_execute()
{
test = create_test(test_type, num_samples, small,
combine_depth_stencil,
pattern_width, pattern_height, supersample_factor,
filter_mode);
return test->run();
}
enum piglit_result
piglit_display()
{
bool pass = true, result = pass;
if (!all_samples) {
pass = test_create_and_execute() && pass;
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
piglit_present_results();
delete test;
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
for (num_samples = 0; num_samples <= max_samples; ) {
result = test_create_and_execute();
result = piglit_check_gl_error(GL_NO_ERROR) && result;
printf("Samples = %d, Result = %s\n\n",
num_samples, result ? "pass" : "fail");
pass = result && pass;
/* Test only power of 2 samples */
num_samples = num_samples ? num_samples << 1: num_samples + 2;
piglit_present_results();
delete test;
}
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
|
