Mac 安装GLFW和简单测试

1 安装Cmake,下载GLFW 源代码

2 通过命令行（不要用带界面的工具）--https://blog.csdn.net/pythonandjava/article/details/122777144

# 切换至下载解压后的GLFW源码目录
cd glfw-3.3.6
# 创建 build 文件夹，用于存放配置和编译后的文件
mkdir build
# 切换至 build 目录
cd build
# 用 cmake 生成相关构建文件（请确保你的 Mac 已经安装了 CommandLineTool 和 CMake）
# 如果安装 CMake 后执行下方命令后依旧出现 “zsh: command not found: cmake” ，请先执行下面这条命令后重试
# sudo "/Applications/CMake.app/Contents/bin/cmake-gui" --install 
cmake ..
# 构建并安装GLFW
make && sudo make install

3 安装完成

[100%] Built target docs
Install the project...
-- Install configuration: ""
-- Installing: /usr/local/lib/libglfw3.a
-- Installing: /usr/local/include/GLFW
-- Installing: /usr/local/include/GLFW/glfw3.h
-- Installing: /usr/local/include/GLFW/glfw3native.h
-- Installing: /usr/local/lib/cmake/glfw3/glfw3Config.cmake
-- Installing: /usr/local/lib/cmake/glfw3/glfw3ConfigVersion.cmake
-- Installing: /usr/local/lib/cmake/glfw3/glfw3Targets.cmake
-- Installing: /usr/local/lib/cmake/glfw3/glfw3Targets-noconfig.cmake
-- Installing: /usr/local/lib/pkgconfig/glfw3.pc

 4 导入GLad；到官网下载对应的配置的头文件源文件

5demo：（创建Mac OS 控制台程序，缺少的frame work记得添加）记得吧GLFW复制到项目文件夹下，并添加

 

 

 build setting里边记得导入glad ,flow的头文件路径和库查找路径

 

 main函数：

//
//  main.cpp
//
//

// System Headers
#include <glad/glad.h>
#include <GLFW/glfw3.h>

// Standard Headers
#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <chrono>

void framebuffer_size_callback(GLFWwindow* window, int width, int height);//回调函数原型声明
void processInput(GLFWwindow *window);

// settings
const unsigned int SCR_WIDTH = 800;
const unsigned int SCR_HEIGHT = 600;

int main(int argc, char * argv[]) {

    //初始化GLFW
    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
    //创建一个窗口对象
    GLFWwindow* window = glfwCreateWindow(SCR_WIDTH, SCR_HEIGHT, "FirstGL", NULL, NULL);
    if (window == NULL)
    {
        std::cout << "Failed to create GLFW window" << std::endl;
        glfwTerminate();
        return -1;
    }
    //通知GLFW将我们窗口的上下文设置为当前线程的主上下文
    glfwMakeContextCurrent(window);
    //对窗口注册一个回调函数,每当窗口改变大小，GLFW会调用这个函数并填充相应的参数供你处理
    glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
    //初始化GLAD用来管理OpenGL的函数指针
    if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress))
    {
        std::cout << "Failed to initialize GLAD" << std::endl;
        return -1;
    }
    glfwSwapInterval(10);
    
    static auto lastpaint = std::chrono::high_resolution_clock::now();
    //渲染循环
    while(!glfwWindowShouldClose(window))
    {
        // 输入
        processInput(window);

        // 渲染指令
        glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
        glClear(GL_COLOR_BUFFER_BIT);
        std::cout<<"flush"<<std::endl;
        // 重点语句
        auto now = std::chrono::high_resolution_clock::now();
           auto duration = static_cast<std::chrono::duration<double, std::micro>>(now - lastpaint);
           lastpaint = now;
           std::cout<< __FUNCTION__ << "micromillion:interval=" << static_cast<long long>(duration.count());
        
        glfwSwapBuffers(window);//检查触发事件
        glfwPollEvents();    //交换颜色缓冲
    }

    //释放/删除之前的分配的所有资源
    glfwTerminate();
    return EXIT_SUCCESS;
}

//输入控制，检查用户是否按下了返回键(Esc)
void processInput(GLFWwindow *window)
{
    if(glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS)
        glfwSetWindowShouldClose(window, true);
}

// 当用户改变窗口的大小的时候，视口也应该被调整
void framebuffer_size_callback(GLFWwindow* window, int width, int height)
{
    // 注意：对于视网膜(Retina)显示屏，width和height都会明显比原输入值更高一点。
    glViewport(0, 0, width, height);
}

 

参考：https://blog.csdn.net/lm409/article/details/78420044