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
|
/* 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.
*/
/**
* \file clearbuffer-depth.c
* Verify clearing depth buffers with glClearBufferfv
*
* This test works by generating several framebuffer objects and attempting to
* clear the depth buffer of those FBOs by calling \c glClearBufferfv.
*
* - An FBO with only a color attachment. This should not generate an
* error, but the color data should not be modified.
*
* - An FBO with only a depth attachment.
*
* - An FBO with a depth attachment and a color attachment. The color
* data should not be modified.
*
* - An FBO with a depth attachment and a stencil attachment. The stencil
* data should not be modified.
*
* - An FBO with a packed depth/stencil attachment. The stencil data
* should not be modified.
*
* In each case, \c glClearBufferfv is called twice. Each call uses a
* different clear value. This ensures that the test doesn't erroneously pass
* because the depth buffer was already filled with the clear color.
*
* \author Ian Romanick
*/
#include "piglit-util-gl-common.h"
#include "clearbuffer-common.h"
void piglit_init(int argc, char **argv)
{
static const struct {
bool color;
bool stencil;
bool depth;
bool packed;
} test_vectors[] = {
{ true, false, false, false },
{ false, true, false, false },
{ true, true, false, false },
{ false, false, true, false },
{ true, false, true, false },
{ false, true, true, false },
{ true, true, true, false },
{ false, true, true, true },
{ true, true, true, true },
};
static const int first_s = 0x01;
static const int second_s = 0xfe;
static const float first_d = 0.5;
static const float second_d = 0.8;
unsigned i;
bool pass = true;
piglit_require_gl_version(30);
for (i = 0; i < ARRAY_SIZE(test_vectors); i++) {
GLenum err;
GLuint fb = generate_simple_fbo(test_vectors[i].color,
test_vectors[i].stencil,
test_vectors[i].depth,
test_vectors[i].packed);
if (fb == 0) {
if (!piglit_automatic) {
printf("Skipping framebuffer %s color, "
"%s depth, and "
"%s stencil (%s).\n",
test_vectors[i].color
? "with" : "without",
test_vectors[i].depth
? "with" : "without",
test_vectors[i].stencil
? "with" : "without",
test_vectors[i].packed
? "packed" : "separate");
}
continue;
}
if (!piglit_automatic) {
printf("Trying framebuffer %s color, "
"%s depth and "
"%s stencil (%s)...\n",
test_vectors[i].color ? "with" : "without",
test_vectors[i].depth ? "with" : "without",
test_vectors[i].stencil ? "with" : "without",
test_vectors[i].packed ? "packed" : "separate");
}
/* The GL spec says nothing about generating an error for
* clearing a buffer that does not exist. Certainly glClear
* does not.
*/
glClearBufferfi(GL_DEPTH_STENCIL, 0, first_d, first_s);
err = glGetError();
if (err != GL_NO_ERROR) {
fprintf(stderr,
"First call to glClearBufferfi erroneously "
"generated a GL error (%s, 0x%04x)\n",
piglit_get_gl_error_name(err), err);
pass = false;
}
pass = simple_probe(test_vectors[i].color,
default_color,
test_vectors[i].stencil,
first_s,
test_vectors[i].depth,
first_d)
&& pass;
glClearBufferfi(GL_DEPTH_STENCIL, 0, second_d, second_s);
err = glGetError();
if (err != GL_NO_ERROR) {
fprintf(stderr,
"Second call to glClearBufferfi erroneously "
"generated a GL error (%s, 0x%04x)\n",
piglit_get_gl_error_name(err), err);
pass = false;
}
pass = simple_probe(test_vectors[i].color,
default_color,
test_vectors[i].stencil,
second_s,
test_vectors[i].depth,
second_d)
&& pass;
glDeleteFramebuffers(1, &fb);
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
}
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
|
