Normal Mapping and no fog, but i need fog... help

         VertexShaderConstant[0]=<matWorldViewProj>;
        VertexShaderConstant[4]=<matWorld>;
        vertexShaderConstant[9]= <vecFog>;
        vertexShaderConstant[10]=<vecSunDir>;
        vertexShaderConstant[11]=<vecLight>;
        VertexShaderConstant[12]={0.5f, 0.5f, 10.0f, 10.0f};

        VertexShader =
        asm
        {
            vs_1_1 // Declarations

            dcl_position v0
            dcl_normal v3
            dcl_texcoord0 v7
            dcl_texcoord1 v8

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

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

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

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

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

            mad r0, r0, c12.x, c12.x   // Put light vector in range from 0 to 1
            mul r0, r0, c12.y				// Adjust the intensity
            add oD0.xyz,r0,c11			// Add environment light then send it down the diffuse pipe

            // Fog calculations
            mov r1.w,c9.w
            dp4 r0,v0,c6 // distance to camera position
            add r0,r0,-c9.x // distance-fog_start

           //float3 PositionWorld = mul(inPos, matWorld);
            //float ofog = 1 - (distance(PositionWorld, vecViewPos) - vecFog.x) * (vecFog.z*1.5);
            //Out.Fog = ofog;
        	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
        }; 

 //float3 PositionWorld = mul(inPos, matWorld);
            //float ofog = 1 - (distance(PositionWorld, vecViewPos) - vecFog.x) * (vecFog.z*1.5);
            //Out.Fog = ofog;
        	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 

Quote:

---

Camera.fog_start = 2000;
Camera.fog_end = 7000;
D3D_FogColor1.red = 193;
D3D_FogColor1.green = 205;
D3D_FogColor1.blue = 215;
fog_color = 1;

---