Adding OpenGL GLSL Shaders

In this tutorial, I'll be showing you how to import OpenGL shaders. Shaders are crucial because they essentially draw pixels to the screen. Without them, then you'll have a game with no graphics! OpenGL shaders need to be coded in GLSL (GL Shader Language), but you will not need to know GLSL for this tutorial; we just want to know how to load in the shaders, not how to write them. The purpose of this tutorial is not how to write shaders, and in future tutorials shaders will be provided.

First off, we need the code from the Creating an OpenGL Window tutorial:

//C
#include 
#include 
#include 

int main(void) {
	initSDL(SDL_INIT_EVERYTHING);
	initInput();
	initDisplay(800, 600, 1000, 60, SM_FALSE, "OpenGL window");

	while (!keyPressed(27) && !closeClicked()) {
		refreshScreen();
	}

	quitDisplay();
	quitInput();
	quitSDL();

	return 0;
}

//Pascal
uses
  SMGL_SMSDL, SMGL_Input, SMGL_Display;

begin
  initSDL(SDL_INIT_EVERYTHING);
  initInput;
  initDisplay(800, 600, 1000, 60, SM_FALSE, 'OpenGL window');

  while (keyPressed(27) = SM_FALSE) and (closeClicked = SM_FALSE) do
  begin
    refreshScreen;
  end;

  quitDisplay;
  quitInput;
  quitSDL;
end.

Now we need to add the header that will allow us to import shaders.

//C
#include 

//Pascal
uses
  SMGL_SMSDL, SMGL_Input, SMGL_Display, SMGL_Shader;

Let's load up some shaders! TODO: finish