//hlsl vs_2_0

#define textureCoordinateSetMAIN	textureCoordinateSet0
#define DECLARE_textureCoordinateSets	\
	float2 textureCoordinateSet0 : TEXCOORD0 : register(v7); 

#include "vertex_program/include/vertex_shader_constants.inc"
#include "vertex_program/include/functions.inc"

struct InputVertex
{
	float4  position        : POSITION0  : register(v0);
	float4  normal  	: NORMAL0    : register(v3);
	DECLARE_textureCoordinateSets
};

struct OutputVertex
{
	float4  position 	: POSITION0;
	float3  specular    	: COLOR0;
	float   fog       	: FOG;
	float2  tcs_SPEC  	: TEXCOORD0;
	float3  normal_o	: TEXCOORD1;
	float3  halfAngle_o	: TEXCOORD2;
};

OutputVertex main(InputVertex inputVertex)
{
	OutputVertex outputVertex;

	// transform vertex
	outputVertex.position = transform3d(inputVertex.position);

	// calculate fog
	outputVertex.fog = calculateFog(inputVertex.position);

	// copy texture coordinates
	outputVertex.tcs_SPEC = inputVertex.textureCoordinateSetMAIN;

	// calculate lighting
	DiffuseSpecular diffuseSpecular = calculateDiffuseSpecularLighting(true, inputVertex.position, inputVertex.normal);
	outputVertex.specular = diffuseSpecular.specular * material.specularColor;

	// setup for per-pixel specular lighting
	outputVertex.normal_o = inputVertex.normal;
	
	//Get view direction and compute half-angle
	outputVertex.halfAngle_o = calculateHalfAngle_o(inputVertex.position);
	
	return outputVertex;
}