VS配置OpenGL开发环境：GLFW库和GLAD库的配置
1.去GLFW官网下载相应版本的配置文件：点击打开链接，无论你的系统是32位还是64位，都建议下载32位的配置文件，如下图：
去GLAD在线服务获得glad.h配置文件点击打开链接，按照下图的信息填写，获得glad.zip文件：
2.将下载的文件解压，得到VS各个版本的配置库，你可以根据你安装的VS版本选择，由于笔者安装的是VS2013，所以选择lib-vc2013，在解压好的文件里面，我们只需要两个文件夹里的东西：include里面的GLFW文件夹和lib-vc2013；解压glad.zip后可以看到两个文件夹：include和src，我们将include文件夹里面的KHR和glad文件夹考到新建文件夹include里面，如下图所示：
再将lib-vc2013文件夹和include文件夹放同一文件夹下，如下图：
好到这里文件夹整理工作完毕，接下来看如何配置！！！
3.将lib-vc2013文件夹里的glfw3.dll文件复制到系统文件夹里面：C:\Windows\System32和C:\Windows\SysWOW64。
4.打开VS2013，新建一个控制台应用程序，新建一个demo.cpp，并将glad.zip解压得到的src文件夹里面的glad.c添加到项目中，如下图所示：
5.链接包含目录和库目录，右键单击解决方案：属性->配置属性->VC++目录：将步骤2里面的两个文件夹路径包含进来，如下图：
6.链接库：opengl32.lib和glfw3.lib。右键单击解决方案：属性->配置属性->链接器->附加依赖项，如下图：
到这里，配置大功告成，下面进行第一个例子的运行！！！
7.实现一个OpenGL窗口：hello window。
demo.cpp代码：
#include
#include
#include
void framebuffer_size_callback(GLFWwindow* window, int width, int height);
void processInput(GLFWwindow *window);
// settings
const unsigned int SCR_WIDTH = 800;
const unsigned int SCR_HEIGHT = 600;
int main()
{
// glfw: initialize and configure
// ------------------------------
glfwInit();
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
#ifdef __APPLE__
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); // uncomment this statement to fix compilation on OS X
#endif
// glfw window creation
// --------------------
GLFWwindow* window = glfwCreateWindow(SCR_WIDTH, SCR_HEIGHT, "LearnOpenGL", NULL, NULL);
if (window == NULL)
{
std::cout << "Failed to create GLFW window" << std::endl;
glfwTerminate();
return -1;
}
glfwMakeContextCurrent(window);
glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
// glad: load all OpenGL function pointers
// ---------------------------------------
if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress))
{
std::cout << "Failed to initialize GLAD" << std::endl;
return -1;
}
// render loop
// -----------
while (!glfwWindowShouldClose(window))
{
// input
// -----
processInput(window);
// glfw: swap buffers and poll IO events (keys pressed/released, mouse moved etc.)
// -------------------------------------------------------------------------------
glfwSwapBuffers(window);
glfwPollEvents();
}
// glfw: terminate, clearing all previously allocated GLFW resources.
// ------------------------------------------------------------------
glfwTerminate();
return 0;
}
// process all input: query GLFW whether relevant keys are pressed/released this frame and react accordingly
// ---------------------------------------------------------------------------------------------------------
void processInput(GLFWwindow *window)
{
if (glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS)
glfwSetWindowShouldClose(window, true);
}
// glfw: whenever the window size changed (by OS or user resize) this callback function executes
// ---------------------------------------------------------------------------------------------
void framebuffer_size_callback(GLFWwindow* window, int width, int height)
{
// make sure the viewport matches the new window dimensions; note that width and
// height will be significantly larger than specified on retina displays.
glViewport(0, 0, width, height);
} 