// Guess what?!?!?! We have changes here.. Finally :)

// Here we are going to change the color of our output
// render to a color of our choice.. My choice is going
// to be blue. Just because I can :)

// In GLSL we have different types of variables we can
// use. The most used types (IMO) are the vec types.
// They consist of vec1, vec2, vec3, vec4, the vec
// standing for vector, even though it is generally
// used to hold multiple part floats and integers. 

// Now the gl_FragColor that we have to set, takes
// a vec4 type variable. The correct way to use this is
// like so:
// DO: vec4(1,2,3,4)
// DO NOT: vec4 1,2,3,4 or (vec4)1,2,3,4

// Now for colours, you would have entered in 3 numbers
// one for Red, one for Green and one for Blue for the
// glColor3f calls. This is the same, only it also takes
// an alpha value as well just like glColor4f. GLSL also
// uses the same order for colours, so the first is Red
// the second is Green, the third is Blue and the fourth
// is Alpha.

// To get the colour blue, we therefore need:
// vec4(r,g,b,a) which would come to vec4(0,0,1,1).

// This can either be written straight out, or we can
// store this in a variable, 
// eg: vec4 Blue = vec4(0,0,1,1);
// and then call gl_FragColor = Blue.

// But in this tutorial I am going to call the line:
// gl_FragColor = vec4(0,0,1,1);

// And that is all there is to it. We now have a blue
// cube.

// Also keep in mind, that any color set in GLSL will
// overwrite the color set by glColor, unless you call
// gl_Color in the shader as in the previous tutorial.

void main(void)
{
// Set the output color of our current pixel
	gl_FragColor = vec4(0,0,1,1);
}