SDL2_Opengl Example

OpenGL_SDL2_test.cpp

#include<SDL2/SDL.h>
#include<SDL2/SDL_opengl.h>
#include<GL/glut.h>

int main(){
	//Create window
	SDL_Window *window = SDL_CreateWindow("Test",SDL_WINDOWPOS_UNDEFINED,SDL_WINDOWPOS_UNDEFINED,640,480,SDL_WINDOW_OPENGL);
	//OpenGL Init
	SDL_GLContext context = SDL_GL_CreateContext(window);
	glMatrixMode(GL_MODELVIEW);
	glLoadIdentity();
	glClear(GL_COLOR_BUFFER_BIT);
	//Make Polygon
	glBegin(GL_QUADS);
	glColor3f(255,255,255);
	glVertex2f(0.5,0.5);
	glVertex2f(0.5,-0.5);
	glVertex2f(-0.5,-0.5);
	glVertex2f(-0.5,0.5);
	glEnd();
	//OpenGL Update
	SDL_GL_SwapWindow(window);
	//Other SDL instructions
	SDL_Delay(5000);
	//Free space and SDL Quit
	SDL_GL_DeleteContext(context);
	SDL_DestroyWindow(window);
	SDL_Quit();
}