Man.... these codes are old.

However, this is what I was using at one point.

If it helps anyone, great.

Code:

---

 
////////////////////////////////////////////////////
//
//  Basic Dot3 Bumpmapping.  
//
//  Calulates diffuse lighting from Sun and Level Light  
//
//  Needs:  A6.31 Comm+   DX9c  vertexshader.1.1 
//
//  Todo:  Lighting improvements
//
//  Eric Hendrickson-Lambert (Steempipe)
//
//  3/28/05:  Made changes for DX9 A6

material mat_bumpmap
{

flags=tangent;

effect="

  matrix matWorldViewProj;
  matrix matWorld;

  texture entSkin1;     //Colormap
  texture entSkin2;     //Normalmap 

  vector vecLight;
  vector vecFog;
  vector vecSunDir;
  
  technique dot3mapping
  {
    pass p0
    {

      AlphaBlendEnable = False;
      AlphaTestEnable = False;
      Lighting = True;
      DitherEnable = True;
      
      Texture[0] = <entSkin2>;
      Texture[1] = <entSkin1>;

      ColorOp[0] = Dotproduct3;
      ColorArg1[0] = Texture;
      ColorArg2[0] = Diffuse;

      ColorOp[1] = Modulate;
      ColorArg1[1] = Texture;
      ColorArg2[1] = Current;

      VertexShaderConstant[0]=<matWorldViewProj>;
      VertexShaderConstant[4]=<matWorld>;
      
      vertexShaderConstant[9]= <vecFog>;
      vertexShaderConstant[10]=<vecSunDir>;
      vertexShaderConstant[11]=<vecLight>;
      VertexShaderConstant[12]={0.5f, 0.5f, 0.0f, 0.0f};
      
      VertexShader =
        asm
	{
			
	vs_1_1

	// Declarations
	dcl_position v0 
	dcl_normal v3
	dcl_texcoord0 v7
	dcl_texcoord1 v8 

	// Transform position to clip space
	m4x4 oPos, v0, c0

	// Tranform normal and tangent to world space
	m3x3 r3, v8, c4
	m3x3 r5, v3, c4

	// Compute binormal 
	mul r0, r3.zxy, r5.yzx
	mad r4, r3.yzx, r5.zxy, -r0

	// Transform (Sun)light vector to tangent space
	dp3 r0.x, r3.xyz, -c10
	dp3 r0.y, r4.xyz, -c10
	dp3 r0.z, r5.xyz, -c10

	// Normalize transformed light vector
	dp3 r0.w, r0, r0
	rsq r0.w, r0.w
	mul r0, r0, r0.w

	// Put light vector in range from 0 to 1
	mad r0, r0, c12.x, c12.x
	// Adjust the intensity 
	mul r0, r0, c12.y
	// Add environment light then send it down the diffuse pipe
	add oD0.xyz,r0,c11	
        
	// Fog calculations
	mov r1.w,c9.w			
	dp4 r0,v0,c6			// distance to camera position
	add r0,r0,-c9.x		        // distance-fog_start
	mad r0.x,-r0.x,c9.z,r1.w	// 1-(distance-fog_start)*(1/(fog_end-fog_start))
	max oFog,r0.x,c12.w		// clamp with custom max value

	// Pass the texture coordinates through
	mov oT0, v7
	mov oT1, v7
	};
    }
  }
";
} 



action fx_bumpmaping
{ 
my.material = mat_bumpmap; 
}


 

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