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
|
#include <iostream>
#include <ratio>
#include <thread>
#define GLFW_INCLUDE_NONE
#include <GLFW/glfw3.h>
#include <glbinding/ContextInfo.h>
#include <glbinding/logging.h>
#include <glbinding/Version.h>
#include "Timer.h"
#include <thread>
#include <fstream>
#include "glbinding.h"
#include "glew.h"
void compare()
{
const int ITERATIONS = 8192;
const int ITERATIONS_WARMUP = ITERATIONS / 32;
Timer timer;
std::cout << std::endl << "test: initialize bindings ..." << std::endl;
timer.start(" glbinding ");
glbinding_init();
timer.restart(" glew ");
glew_init();
timer.stop();
std::cout << std::endl
<< "OpenGL Version: " << glbinding::ContextInfo::version() << std::endl
<< "OpenGL Vendor: " << glbinding::ContextInfo::vendor() << std::endl
<< "OpenGL Renderer: " << glbinding::ContextInfo::renderer() << std::endl;
std::cout << std::endl << "prep: warm-up ..." << std::endl;
std::this_thread::sleep_for(std::chrono::seconds(1));
std::cout << " glew " << std::endl;
for (int i = 0; i < ITERATIONS_WARMUP; ++i)
glew_test();
std::cout << " glbinding " << std::endl;
for (int i = 0; i < ITERATIONS_WARMUP; ++i)
glbinding_test();
timer.setSteps(24 * ITERATIONS);
std::cout << std::endl << "test: average call times for " << ITERATIONS << " x 24 calls ..." << std::endl;
timer.start(" glew ");
for (int i = 0; i < ITERATIONS; ++i)
glew_test();
long double glew_avg = timer.restart(" glbinding ");
for (int i = 0; i < ITERATIONS; ++i)
glbinding_test();
long double glbinding_avg = timer.stop();
std::cout << std::endl << "test: again, now with error checking ..." << std::endl;
glew_error(true);
glbinding_error(true);
timer.start(" glew ");
for (int i = 0; i < ITERATIONS; ++i)
glew_test();
long double glew_avg_err = timer.restart(" glbinding ");
for (int i = 0; i < ITERATIONS; ++i)
glbinding_test();
long double glbinding_avg_err = timer.stop();
glbinding_error(false);
std::cout << std::endl << "test: again, now with logging ..." << std::endl;
glbinding::logging::start("logs/comparison");
timer.start(" glbinding ");
for (int i = 0; i < ITERATIONS; ++i)
glbinding_test();
long double glbinding_avg_log = timer.stop();
glbinding::logging::stop();
std::cout << std::endl << "glbinding/glew decrease: " << (glbinding_avg / glew_avg - 1.0) * 100.0 << "%" << std::endl;
std::cout << std::endl << "glbinding/glew decrease (error checks): " << (glbinding_avg_err / glew_avg_err - 1.0) * 100.0 << "%" << std::endl;
std::cout << std::endl << "glbinding decrease with logging: " << (glbinding_avg_log / glbinding_avg - 1.0) * 100.0 << "%" << std::endl;
std::cout << std::endl << "finalizing ..." << std::endl;
std::this_thread::sleep_for(std::chrono::seconds(3));
}
void errorfun(int errnum, const char * errmsg)
{
std::cerr << errnum << ": " << errmsg << std::endl;
}
int main(int /*argc*/, char* /*argv*/[])
{
if (!glfwInit())
return 1;
glfwSetErrorCallback(errorfun);
glfwDefaultWindowHints();
glfwWindowHint(GLFW_VISIBLE, false);
#ifdef SYSTEM_DARWIN
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, true);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
#endif
GLFWwindow * window = glfwCreateWindow(320, 240, "", nullptr, nullptr);
if (!window)
{
glfwTerminate();
return -1;
}
glfwMakeContextCurrent(window);
compare();
glfwTerminate();
return 0;
}
|
