Plan for Brian Ramage

//-----------------------------------------------------------------------------
// Structures                                                                  
//-----------------------------------------------------------------------------
struct VertData
{
   float2 texCoord        : TEXCOORD0;
   float2 lmCoord         : TEXCOORD1;
   float3 T               : TEXCOORD2;
   float3 B               : TEXCOORD3;
   float3 N               : TEXCOORD4;
   float3 normal          : NORMAL;
   float4 position        : POSITION;
};


struct ConnectData
{
   float4 hpos            : POSITION;
   float2 outTexCoord     : TEXCOORD0;
   float3 pos             : TEXCOORD2;
   float3 outEyePos       : TEXCOORD3;
   float4 outLightVec     : TEXCOORD4;
};


//-----------------------------------------------------------------------------
// Main                                                                        
//-----------------------------------------------------------------------------
ConnectData main( VertData IN,
                  uniform float4x4 modelview       : register(C0),
                  uniform float3   inLightVec      : register(C24),
                  uniform float3   eyePos          : register(C20),
                  uniform float3   fogData         : register(C22),
                  uniform float4x4 objTrans        : register(C12)
)
{
   ConnectData OUT;

   OUT.hpos = mul(modelview, IN.position);
   OUT.outTexCoord = IN.texCoord;

   float3x3 objToTangentSpace;
   objToTangentSpace[0] = IN.T;
   objToTangentSpace[1] = IN.B;
   objToTangentSpace[2] = IN.N;

   OUT.outLightVec.xyz = -inLightVec;
   OUT.outLightVec.xyz = mul(objToTangentSpace, OUT.outLightVec);
   OUT.pos = mul(objToTangentSpace, IN.position.xyz / 100.0);;
   OUT.outEyePos.xyz = mul(objToTangentSpace, eyePos.xyz / 100.0);;
   OUT.outLightVec.w = step( 0.0, dot( -inLightVec, IN.normal ) );

   return OUT;
}

//-----------------------------------------------------------------------------
// Structures                                                                  
//-----------------------------------------------------------------------------
struct ConnectData
{
   float2 texCoord        : TEXCOORD0;
   float3 normal          : TEXCOORD1;
   float3 pixPos          : TEXCOORD2;
   float3 eyePos          : TEXCOORD3;
   float4 lightVec        : TEXCOORD4;
};


struct Fragout
{
   float4 col : COLOR0;
};


//-----------------------------------------------------------------------------
// Main                                                                        
//-----------------------------------------------------------------------------
Fragout main( ConnectData IN,
              uniform float4    ambient         : register(C2),
              uniform sampler2D diffuseMap      : register(S0),
              uniform sampler2D bumpMap         : register(S1),
              uniform sampler2D noiseMap        : register(S2),
              uniform float4    specularColor   : register(C0),
              uniform float     specularPower   : register(C1)
)
{
   Fragout OUT;

   float4 bumpNormal = tex2D(bumpMap, IN.texCoord);
   float4 bumpDot = saturate( dot(bumpNormal.xyz * 2.0 - 1.0, IN.lightVec.xyz) );

   float4 diffuse = tex2D(diffuseMap, IN.texCoord);

   float2 noiseIndex;
   noiseIndex.x = floor( IN.texCoord.x ) / 63.0 + 0.5/64.0;  // uses 64x64 noise texture
   noiseIndex.y = floor( IN.texCoord.y ) / 63.0 + 0.5/64.0;
   float4 noiseColor = tex2D( noiseMap, noiseIndex ) * 1.0 - 0.5;   
   
   OUT.col = diffuse + noiseColor * diffuse.a;
   OUT.col *= bumpDot + ambient;

   float3 eyeVec = normalize(IN.eyePos - IN.pixPos);
   float3 halfAng = normalize(eyeVec + IN.lightVec.xyz);
   float specular = saturate( dot(bumpNormal.xyz * 2.0 - 1.0, halfAng) ) * IN.lightVec.w;
   specular = pow(specular, specularPower);
   OUT.col += specularColor * specular * diffuse.a;
   return OUT;
}