// The fragment shader needs a main function, just as the 
// vertex shader does. But unlike a vertex shader, this is
// called for every pixel on the screen.

// All fragment shaders must end with the line
// gl_FragColor = *something*;
// because the fragment shader is setting the current color
// drawn on the screen.

// In this fragment shader, gl_FragColor must end up being
// the color that we want to display on the screen. In
// this case we are setting that to gl_Color. gl_Color
// will take the current color set in OpenGL using
// glColor3f(r,g,b) or any other glColor call and then
// use this color. So the fragment shader will be outputting
// the same colour that would be shown, even if we had not
// called this shader.

// And that is all there is to shaders (for now).
// If you have followed through this far, well done. Give
// yourself a pat on the back :)

void main()
{
// Set the output color of our current pixel
	gl_FragColor = gl_Color;
}