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
|
/**
* 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.
*/
/**
* Verify that the baseinstance setting (from GL_ARB_base_instance) does
* not affect the value of gl_InstanceID.
*/
#include "piglit-util-gl.h"
PIGLIT_GL_TEST_CONFIG_BEGIN
#ifdef PIGLIT_USE_OPENGL
config.supports_gl_core_version = 31;
#else
config.supports_gl_es_version = 30;
#endif
config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
config.khr_no_error_support = PIGLIT_NO_ERRORS;
PIGLIT_GL_TEST_CONFIG_END
static const char *vstext =
#ifdef PIGLIT_USE_OPENGL
"#version 140\n"
#else
"#version 300 es\n"
#endif
"in vec3 vertex;\n"
"out vec4 passColor;\n"
"void main() {\n"
" if(gl_InstanceID != 0) passColor = vec4(1, 0, 0, 1);\n"
" else passColor = vec4(0, 1, 0, 1);\n"
" gl_Position = vec4(vertex, 1.);\n"
"}\n";
static const char *fstext =
#ifdef PIGLIT_USE_OPENGL
"#version 140\n"
#else
"#version 300 es\n"
"precision highp float;\n"
#endif
"in vec4 passColor;\n"
"out vec4 color;\n"
"void main() {\n"
" color = passColor;\n"
"}\n";
static GLuint vao;
static GLuint vertBuff;
static GLuint indexBuf;
static GLfloat vertices[] = {
-1.0, 1.0, 0.0,
1.0, 1.0, 0.0,
1.0,-1.0, 0.0,
-1.0,-1.0, 0.0
};
static GLsizei vertSize = sizeof(vertices);
static GLuint indices[] = {
0, 1, 2, 0, 2, 3
};
static GLsizei indSize = sizeof(indices);
static GLuint prog;
void
piglit_init(int argc, char **argv)
{
GLuint vertIndex;
#ifdef PIGLIT_USE_OPENGL
piglit_require_extension("GL_ARB_base_instance");
#else
piglit_require_extension("GL_EXT_base_instance");
#endif
prog = piglit_build_simple_program(vstext, fstext);
glUseProgram(prog);
glGenBuffers(1, &vertBuff);
glBindBuffer(GL_ARRAY_BUFFER, vertBuff);
glBufferData(GL_ARRAY_BUFFER, vertSize, vertices, GL_STATIC_DRAW);
glGenBuffers(1, &indexBuf);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indexBuf);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, indSize,
indices, GL_STATIC_DRAW);
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
vertIndex = glGetAttribLocation(prog, "vertex");
glBindBuffer(GL_ARRAY_BUFFER, vertBuff);
glEnableVertexAttribArray(vertIndex);
glVertexAttribPointer(vertIndex, 3, GL_FLOAT, GL_FALSE, 0, 0);
}
enum piglit_result
piglit_display(void)
{
bool pass = true;
float green[] = {0, 1, 0};
glClearColor(.4, .4, .4, 1.);
glClear(GL_COLOR_BUFFER_BIT);
glBindVertexArray(vao);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indexBuf);
/* use non zero baseinstance value to verify it doesn't affect
* gl_InstanceID
*/
glDrawElementsInstancedBaseInstance(GL_TRIANGLES, ARRAY_SIZE(indices),
GL_UNSIGNED_INT, NULL, 1, 15);
pass = piglit_probe_rect_rgb(0, 0, piglit_width, piglit_height, green)
&& pass;
pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
piglit_present_results();
return pass ? PIGLIT_PASS : PIGLIT_FAIL;
}
|
