Introduction to the High-Level Shading Language - Introduction to 3D Game Programming with DirectX 9.0 - page 271

/////////////////////////////////////////////////////////////////////
//
// File: transform.txt
//
// Author: Frank D. Luna (C) All Rights Reserved
//
// System: AMD Athlon 1800+ XP, 512 DDR, Geforce 3, Windows XP,
// MSVC++ 7.0

//
// Desc: Vertex shader that transforms a vertex by the view and
// projection transformation, and sets the vertex color to blue.

//
/////////////////////////////////////////////////////////////////////

//
// Globals
//

// Global variable to store a combined view and projection
// transformation matrix. We initialize this variable
// from the application.
matrix ViewProjMatrix;

// Initialize a global blue color vector.
vector Blue = {0.0f, 0.0f, 1.0f, 1.0f};

//
// Structures
//

// Input structure describes the vertex that is input
// into the shader. Here the input vertex contains
// a position component only.
struct VS_INPUT
{

vector position : POSITION;

};

// Output structure describes the vertex that is
// output from the shader. Here the output
// vertex contains a position and color component.
struct VS_OUTPUT
{

vector position : POSITION;
vector diffuse : COLOR;

};

//
// Main Entry Point, observe the main function
// receives a copy of the input vertex through
// its parameter and returns a copy of the output
// vertex it computes.
//

VS_OUTPUT Main(VS_INPUT input)
{

// zero out members of output