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
|
/*
* Copyright © 2013 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 named-block-no-modify.c
*
* Test that uniform variables containted within a named uniform block cannot be
* accessed by the glUniform* commands.
*
* Section 2.11.4 (Uniform Variables) of the GL 3.2 spec says:
* "Uniforms in a named uniform block are not assigned a location and may
* not be modified using the Uniform* commands."
*
* Test relies on the behavior of glGetUniform returning -1 for uniforms
* that have not been assigned a location, such as those in a named uniform
* block.
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_core_version = 32;
PIGLIT_GL_TEST_CONFIG_END
/* the operations in this shader are not strictly relevant, only that they
* do not get discarded */
static const char vs_text[] =
"#version 150\n"
"\n"
"in vec4 piglit_vertex;\n"
"\n"
"uniform testBlock {\n"
" int a;\n"
" float b;\n"
" mat4 c;\n"
"};\n"
"\n"
"flat out int oa;\n"
"out float ob;\n"
"out mat4 oc;\n"
"\n"
"void main() {\n"
" gl_Position = piglit_vertex;\n"
" oa = a + 1;\n"
" ob = b * 2;\n"
" oc[0] = c[0] * 1;\n"
" oc[1] = c[1] * 2;\n"
" oc[2] = c[2] * 3;\n"
" oc[3] = c[3] * 4;\n"
"}\n";
/* again, operations are just to touch data */
static const char fs_text[] =
"#version 150\n"
"\n"
"flat in int oa;\n"
"in float ob;\n"
"in mat4 oc;\n"
"out vec4 FragColor;\n"
"\n"
"void main() {\n"
" FragColor = vec4(float(oa) * oc[0][0],\n"
" ob * oc[1][1],\n"
" oc[2][2],\n"
" oc[3][3]);\n"
"}\n";
static GLuint prog;
void
piglit_init(int argc, char **argv)
{
bool pass = true;
int a_loc = -2;
int b_loc = -3;
int c_loc = -4;
prog = piglit_build_simple_program(vs_text, fs_text);
glUseProgram(prog);
/* get uniforms, locations should be -1 if glGetUniformLocation
* can't retrieve their location */
a_loc = glGetUniformLocation(prog, "a");
if(a_loc != -1) {
printf("a_loc incorrectly assigned a location: %d", a_loc);
pass = false;
}
b_loc = glGetUniformLocation(prog, "b");
if(b_loc != -1) {
printf("b_loc incorrectly assigned a location: %d", b_loc);
pass = false;
}
c_loc = glGetUniformLocation(prog, "c");
if(c_loc != -1) {
printf("c_loc incorrectly assigned a location: %d", c_loc);
pass = false;
}
piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
}
enum piglit_result
piglit_display(void)
{
/* should not reach */
return PIGLIT_FAIL;
}
|
