【OpenGL】xcode+glfw画三角形

环境搭建

1. 执行brew install glfw

2. 项目中Build Settings中header Search Paths中添加glfw的include路径

3. 项目中Build Phases中的Link Binary With Libraries中添加glfw的lib文件（路径/opt/homebrew/Cellar/glfw/3.4/lib/libglfw.3.4.dylib）及opengl.framework

代码实现

#include <GLFW/glfw3.h>

int main(void)
{
    GLFWwindow* window;

    /* Initialize the library */
    if (!glfwInit())
        return -1;

    /* Create a windowed mode window and its OpenGL context */
    window = glfwCreateWindow(640, 480, "Hello World", NULL, NULL);
    if (!window)
    {
        glfwTerminate();
        return -1;
    }

    /* Make the window's context current */
    glfwMakeContextCurrent(window);

    /* Loop until the user closes the window */
    while (!glfwWindowShouldClose(window))
    {
        /* Render here */
        glClear(GL_COLOR_BUFFER_BIT);

        glBegin(GL_TRIANGLES);
        glVertex2f(0, 0.5f);
        glVertex2f(-0.5f, -0.5f);
        glVertex2f(0.5f, -0.5f);
        glEnd();
        
        /* Swap front and back buffers */
        glfwSwapBuffers(window);

        /* Poll for and process events */
        glfwPollEvents();
    }

    glfwTerminate();
    return 0;
}