sdl2-biicode.cpp

// Example program:
// Using SDL2 to create an application window

#include "SDL.h"
#include <iostream>
#include <ostream>
#include "SDL_opengl.h"


int main(int argc, char* argv[]) {

    SDL_Window *window;                    // Declare a pointer

    SDL_Init(SDL_INIT_VIDEO);              // Initialize SDL2

    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);

    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK,SDL_GL_CONTEXT_PROFILE_CORE);

    // Create an application window with the following settings:
    window = SDL_CreateWindow(
            "An SDL2 window",                  // window title
            SDL_WINDOWPOS_UNDEFINED,           // initial x position
            SDL_WINDOWPOS_UNDEFINED,           // initial y position
            640,                               // width, in pixels
            480,                               // height, in pixels
            SDL_WINDOW_OPENGL                  // flags - see below
    );

    // Check that the window was successfully made
    if (window == NULL) {
        // In the event that the window could not be made...
        printf("Could not create window: %s\n", SDL_GetError());
        return 1;
    }

    auto glContext = SDL_GL_CreateContext(window);

    std::cout << glGetString(GL_VERSION) <<std::endl;
    std::cout << "OpenGL version " << glGetString(GL_VERSION)<<"."<<std::endl;
    // The window is open: enter program loop (see SDL_PollEvent)

    SDL_Delay(3000);  // Pause execution for 3000 milliseconds, for example

    SDL_GL_DeleteContext(glContext);

    // Close and destroy the window
    SDL_DestroyWindow(window);

    // Clean up
    SDL_Quit();
    return 0;
}