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
|
/*
* 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.
*/
/** @file getintegeri_v.c
*
* From the GL_ARB_uniform_buffer_object spec:
*
* "To query the starting offset or size of the range of each
* buffer object binding used for uniform buffers, call
* GetIntegeri_v with <param> set to UNIFORM_BUFFER_START or
* UNIFORM_BUFFER_SIZE respectively. <index> must be in the range
* zero to the value of MAX_UNIFORM_BUFFER_BINDINGS - 1. If the
* parameter (starting offset or size) was not specified when the
* buffer object was bound, zero is returned. If no buffer object
* is bound to <index>, -1 is returned."
*/
#include "piglit-util-gl-common.h"
PIGLIT_GL_TEST_MAIN(
10 /*window_width*/,
10 /*window_height*/,
PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_ALPHA)
static bool pass = true;
static void
test_index(int line, GLenum e, int index, int expected)
{
GLint val;
glGetIntegeri_v(e, index, &val);
if (val != expected) {
printf("%s:%d: %s[%d] was %d, expected %d\n",
__FILE__, line, piglit_get_gl_enum_name(e), index,
val, expected);
pass = false;
}
}
void
test_range(int line, int index, int bo, int offset, int size)
{
test_index(line, GL_UNIFORM_BUFFER_BINDING, index, bo);
test_index(line, GL_UNIFORM_BUFFER_START, index, offset);
test_index(line, GL_UNIFORM_BUFFER_SIZE, index, size);
}
void
piglit_init(int argc, char **argv)
{
GLuint bo[2];
int size = 1024;
GLint max_bindings;
GLint junk;
piglit_require_extension("GL_ARB_uniform_buffer_object");
test_range(__LINE__, 0, 0, -1, -1);
glGenBuffers(2, bo);
glBindBuffer(GL_UNIFORM_BUFFER, bo[0]);
glBufferData(GL_UNIFORM_BUFFER, size, NULL, GL_STATIC_READ);
glBindBuffer(GL_UNIFORM_BUFFER, bo[1]);
glBufferData(GL_UNIFORM_BUFFER, size, NULL, GL_STATIC_READ);
glBindBufferRange(GL_UNIFORM_BUFFER, 0, bo[0], 0, 1);
glBindBufferRange(GL_UNIFORM_BUFFER, 1, bo[1], 2, 3);
test_range(__LINE__, 0, bo[0], 0, 1);
test_range(__LINE__, 1, bo[1], 2, 3);
/* There's a bit of a contradiction in the spec. On the one
* hand, "BindBufferBase is equivalent to calling
* BindBufferRange with offset zero and size equal to the size
* of buffer", but on the other hand, " If the parameter
* (starting offset or size) was not specified when the buffer
* object was bound, zero is returned". This is clarified by
* the GL 4.2 specification, which says that "BindBufferBase
* binds the entire buffer, even when the size of the buffer
* is changed after the binding is established.", so the zero
* return for the size makes sense since it's effectively
* computed at render time.
*/
glBindBufferBase(GL_UNIFORM_BUFFER, 1, bo[1]);
test_range(__LINE__, 1, bo[1], 0, 0);
/* Is binding a BO of 0 valid? It's not clear to me from the
* spec ("The error INVALID_OPERATION is generated by
* BindBufferRange and BindBufferBase if <buffer> is not the
* name of a valid buffer object.", and glIsBuffer returns
* false for 0), but it seems obviously parallel to the rest
* of the GL API, including glBindBuffer(), to allow it
*/
glBindBufferBase(GL_UNIFORM_BUFFER, 0, 0);
test_range(__LINE__, 0, 0, -1, -1);
/* Test the error condition. */
glGetIntegerv(GL_MAX_UNIFORM_BUFFER_BINDINGS, &max_bindings);
glGetIntegeri_v(GL_UNIFORM_BUFFER_BINDING, max_bindings, &junk);
if (!piglit_check_gl_error(GL_INVALID_VALUE))
pass = false;
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
enum piglit_result piglit_display(void)
{
/* UNREACHED */
return PIGLIT_FAIL;
}
|
