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
|
#include <iostream>
#include <GLFW/glfw3.h>
#include <glbinding/glbinding.h>
#include <glbinding/Version.h>
#include <glbinding/FunctionCall.h>
#include <glbinding/CallbackMask.h>
#include <glbinding/gl/gl.h>
#include <glbinding/getProcAddress.h>
#include <glbinding-aux/ContextInfo.h>
#include <glbinding-aux/Meta.h>
#include <glbinding-aux/types_to_string.h>
#include <glbinding-aux/ValidVersions.h>
#include <glbinding-aux/debug.h>
#include "CubeScape.h"
using namespace gl;
using namespace glbinding;
namespace
{
CubeScape * cubescape(nullptr);
}
void error(int errnum, const char * errmsg)
{
std::cerr << errnum << ": " << errmsg << std::endl;
}
void framebuffer_size_callback(GLFWwindow * /*window*/, int width, int height)
{
cubescape->resize(width, height);
}
void key_callback(GLFWwindow * window, int key, int /*scancode*/, int action, int /*mods*/)
{
if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
glfwSetWindowShouldClose(window, 1);
bool numCubesChanged = false;
if (key == GLFW_KEY_I && (action == GLFW_PRESS || action == GLFW_REPEAT))
{
cubescape->setNumCubes(cubescape->numCubes() + 1);
numCubesChanged = true;
}
if (key == GLFW_KEY_D && (action == GLFW_PRESS || action == GLFW_REPEAT))
{
cubescape->setNumCubes(cubescape->numCubes() - 1);
numCubesChanged = true;
}
if (numCubesChanged)
{
const int n = cubescape->numCubes();
std::cout << "#cubes = " << n << " * " << n << " = " << n * n << std::endl;
}
}
int main(int, char *[])
{
glfwSetErrorCallback(error);
if (!glfwInit())
return 1;
glfwDefaultWindowHints();
#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(640, 480, "", nullptr, nullptr);
if (!window)
{
glfwTerminate();
return -1;
}
glfwSetKeyCallback(window, key_callback);
glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
glfwMakeContextCurrent(window);
glbinding::initialize(glfwGetProcAddress, false); // only resolve functions that are actually used (lazy)
glbinding::aux::enableGetErrorCallback();
// print some gl infos (query)
std::cout << std::endl
<< "OpenGL Version: " << aux::ContextInfo::version() << std::endl
<< "OpenGL Vendor: " << aux::ContextInfo::vendor() << std::endl
<< "OpenGL Renderer: " << aux::ContextInfo::renderer() << std::endl;
std::cout << std::endl
<< "Press i or d to either increase or decrease number of cubes." << std::endl << std::endl;
cubescape = new CubeScape();
int width, height; glfwGetFramebufferSize(window, &width, &height);
cubescape->resize(width, height);
while (!glfwWindowShouldClose(window))
{
glfwPollEvents();
cubescape->draw();
glfwSwapBuffers(window);
}
delete cubescape;
cubescape = nullptr;
glfwTerminate();
return 0;
}
|
