Why am I always on openGL version 2.1?[openGL/SDL] - c++

Question

I am trying to use openGL with SDL and whenever I check my version during runtime, it always returns that I am using openGL version 2.1. Now to my understanding including gl3.h gave you the 3.2+ functionality of openGL. Besides that point I am specifically asking for version 4.1 of openGL and still apparently running 2.1. Can somebody please tell me what I am doing wrong? I am running OSX Yosemite.
#include <iostream>
//Using SDL and standard IO
#include <SDL2/SDL.h>
#define GL_GLEXT_PROTOTYPES 1
//#include <SDL2/SDL_opengl.h>
#include <GLUT/glut.h>
#include <stdio.h>
#include <OpenGL/gl3.h>
#include <glm/glm.hpp>
#include <glm/gtc/matrix_transform.hpp>
#include <string.h>
#ifdef __APPLE__
#define glGenVertexArrays glGenVertexArraysAPPLE
#define glBindVertexArray glBindVertexArrayAPPLE
#define glDeleteVertexArrays glDeleteVertexArraysAPPLE
#endif
using namespace std;
//Screen dimension constants
const int SCREEN_WIDTH = 640;
const int SCREEN_HEIGHT = 480;
bool SetOpenGLAttributes()
{
// Set our OpenGL version.
// SDL_GL_CONTEXT_CORE gives us only the newer version, deprecated functions are disabled
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 4);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 1);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
return true;
}
int main( int argc, char* args[] )
{
//The window we'll be rendering to
SDL_Window* window = NULL;
//Initialize SDL
if( SDL_Init( SDL_INIT_VIDEO ) < 0 )
{
printf( "SDL could not initialize! SDL_Error: %s\n", SDL_GetError() );
}
else
{
//Create window
window = SDL_CreateWindow( "SDL Tutorial", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_OPENGL );
if( window == NULL )
{
printf( "Window could not be created! SDL_Error: %s\n", SDL_GetError() );
}
else
{
//creating new context
SDL_GL_CreateContext(window);
//GLuint vertexArrayID;
// glGenVertexArrays(1, &vertexArrayID);
SetOpenGLAttributes();
printf("%s", "This is your version");
printf("%s\n", glGetString(GL_VERSION));
SDL_GL_SetSwapInterval(1);
glEnable(GL_DEPTH_TEST);
SDL_GL_SwapWindow(window);
bool running = true;
while(running){
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glFlush();
//drawCube(.5);
SDL_GL_SwapWindow(window);
SDL_Delay(17);
}
}
}
//Destroy window
//SDL_DestroyWindow( window );
//Quit SDL subsystems
//SDL_Quit();
return 0;

Answer 1

You are calling SetOpenGLAttributes after creating the context. Try calling it before SDL_GL_CreateContext(window);.