opengl.c

#include <stdio.h>
#include <stdlib.h>

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

GLFWwindow* window;

/*
 $ gcc -Wall -lGL -lglfw -lGLEW opengl.c -o opengl && ./opengl
*/


int main() {
    if (!glfwInit()) {
        fprintf( stderr, "Failed to initialize GLFW\n" );
        getchar();
        return -1;
    }

    GLFWmonitor* monitor = glfwGetPrimaryMonitor();
    const GLFWvidmode* mode = glfwGetVideoMode(monitor);

    window = glfwCreateWindow(mode->width, mode->height, "My Title", monitor, NULL);
    if( window == NULL ){
        fprintf( stderr, "Failed to open GLFW window. If you have an Intel GPU, they are not 3.3 compatible. Try the 2.1 version of the tutorials.\n" );
        getchar();
        glfwTerminate();
        return -1;
    }
    glfwMakeContextCurrent(window);

    if (glewInit() != GLEW_OK) {
        fprintf(stderr, "Failed to initialize GLEW\n");
        getchar();
        glfwTerminate();
        return -1;
    }

    glfwSetInputMode(window, GLFW_STICKY_KEYS, GL_TRUE);

    glClearColor(0.3f, 0.0f, 0.1f, 0.0f);


    do{
        glClear( GL_COLOR_BUFFER_BIT );

        // Draw nothing

        glfwSwapBuffers(window);
        glfwPollEvents();

    } while(glfwGetKey(window, GLFW_KEY_ESCAPE) != GLFW_PRESS &&
            glfwWindowShouldClose(window) == 0);

    glfwTerminate();

    return 0;
}