Creating a window in opengl

step 1
Install opengl on your device. I am using ubuntu but you can use any os. I installed opengl from here.

step 2
Creating a window is the hardest thing i could find tutorials on. All of them were outdated or used a weird extra library that slowed your computer down.
however this is the working method:

#include<GL/freeglut.h>

//Program to create an empty Widdow
void init(){
    glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB);  //Line C
    glutInitWindowSize(640,480);
    glutInitWindowPosition(1000,200);
    glutCreateWindow("Simple Window");
}

void display()
{
    glClearColor(1.0,1.0,1.0,0.0);
    glClear(GL_COLOR_BUFFER_BIT);
    // gluOrtho2D(0.0,100.0,0,100.0);
    glFlush();
}

int main(int argc,char **argv)
{
    glutInit(&argc,argv);           //Line A
    init();                 //Line B
    glutDisplayFunc(display);
    glutMainLoop();

    return 0;
}

step 3
compiling is weird for c++. You would just think it would include the library for you, but NO. You have to specify them.

here's what worked for me:

g++ main.cpp -o main -lGLU -lglut -lGL

step 4
enjoy and code until your heart is content.

made by dwarfŧ. :)

Comments

[Vinícius do Carmo Melício]

What is glFlush() for in this context?

[dwarfŧ]

if you remove it the background color will not be white (for linux anyway) but thanky you for the question :)

[Vinícius do Carmo Melício]

I was wondering why my project didn't need a glFlush to change the background color, but it calls a function called glutSwapBuffers that apparently does an implicit glFlush. It was cool to find out, thanks for the post!