Building an OpenGL application using C++ and XCode
I compiled a minimal OpenGL on my M1 MacBook Air.
I used GLFW (a cross platform library for OpenGL).
Overview
I used GLFW to create an application window with a given width and height and the title "Hello World". In a loop, the SwapBuffers function is called until the window is closed.
I created a new Command Line Tool project
I named the project Hello OpenGL
I reviewed the General Settings
I reviewed the default hello world code
I visited the GLFW web site
I reviewed the Hello OpenGL example
I saw missing library/header files
brew install glfw
installed to folder /opt/homebrew/Cellar/glfw/3.3.8
I added a reference to /opt/homebrew/Cellar/glfw/3.3.8/ header files
/opt/homebrew/Cellar/glfw/3.3.8/include
I added the /opt/homebrew/Cellar/glfw/3.3.8/include reference
I added a reference to libraries
I selected OpenGL.framework
I added items
I added files
I added a reference to the dynamically loaded library /opt/homebrew/Cellar/glfw/3.3.8/lib/libglfw.3.3.dylib
I updated the library references
I ran the Hello OpenGL application
main.cpp
C++
1#include <GLFW/glfw3.h> 2 3int main(void) 4{ 5 GLFWwindow* window; 6 7 /* Initialize the library */ 8 if (!glfwInit()) 9 return -1; 10 11 /* Create a windowed mode window and its OpenGL context */ 12 window = glfwCreateWindow(640, 480, "Hello World", NULL, NULL); 13 if (!window) 14 { 15 glfwTerminate(); 16 return -1; 17 } 18 19 /* Make the window's context current */ 20 glfwMakeContextCurrent(window); 21 22 /* Loop until the user closes the window */ 23 while (!glfwWindowShouldClose(window)) 24 { 25 /* Render here */ 26 glClear(GL_COLOR_BUFFER_BIT); 27 28 /* Swap front and back buffers */ 29 glfwSwapBuffers(window); 30 31 /* Poll for and process events */ 32 glfwPollEvents(); 33 } 34 35 glfwTerminate(); 36 return 0; 37}