1. Lecture #1

This lecture gives a basic introduction to configuring the Arduino board on Linux, as well as programming and uploading sketches on it. We also study our very first OpenGL example that opens a window when the program is run. The window closes upon pressing the ESC key. All OpenGL examples dicussed in CS 428 have been inspired by this source.

Scribe Notes by Ryan Goldstein: Source1 PDF1

Scribe Notes by Tavel Findlater: Source2 PDF2

#include <GL/glew.h>
#include <GLFW/glfw3.h>
#include <iostream>

void key_callback(GLFWwindow* window,int key,int scancode,int action,int mode)
{
    if(key==GLFW_KEY_ESCAPE && action==GLFW_PRESS)
        glfwSetWindowShouldClose(window,GL_TRUE);
}

int main()
{
    glfwInit();
#if __APPLE__
    glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT,GL_TRUE);
#endif
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR,3);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR,3);
    glfwWindowHint(GLFW_OPENGL_PROFILE,GLFW_OPENGL_CORE_PROFILE);
    glfwWindowHint(GLFW_RESIZABLE,GL_FALSE);

    GLFWwindow *window=glfwCreateWindow(800,600,"Learn OpenGL",nullptr,nullptr);
    if(window==nullptr)
    {
        std::cout<<"Failed to create GLFW window!"<<std::endl;
        glfwTerminate();
        return -1;
    }
    glfwMakeContextCurrent(window);

    glewExperimental=GL_TRUE;
    if(glewInit()!=GLEW_OK)
    {
        std::cout<<"Failed to initialize GLEW!"<<std::endl;
        return -1;
    }

    int width,height;
    glfwGetFramebufferSize(window,&width,&height);
    glViewport(0,0,width,height);

    glfwSetKeyCallback(window,key_callback);

    while(!glfwWindowShouldClose(window))
    {
        glfwPollEvents();

        glClearColor(.2f,.3f,.3f,1.f);
        glClear(GL_COLOR_BUFFER_BIT);

        glfwSwapBuffers(window);
    }
    glfwTerminate();

    return 0;
}

Save this file as main.cpp. To compile the code, run the following command:

g++ -O3 main.cpp -o window -lGLEW -lglfw -lGL -lX11 -lpthread -lXrandr -ldl -lXxf86vm -lXinerama -lXcursor -lrt -lm -std=c++11

This will create a binary window, and now if you execute the following command:

./window

then you should see a new window (like the one shown below) pop-up on your screen:

Execute the following command to run this code on Mac OS:

g++ -O3 main.cpp -o window -lGLEW -lglfw -framework OpenGL -ldl -lm -std=c++11

If you’re running this command for the very first time, you’ll need to install some libraries. The following command may help on Linux:

sudo apt-get install libglu1-mesa-dev libglew-dev libglfw3-dev libxrandr-dev libxxf86vm-dev libxinerama-dev libxcursor-dev

The following command may help on Mac OS:

brew install glm freetype glfw3 glew pkg-config