///////////////// vertex shader //////////////////v2f BumpReflectVS(a2v IN,        uniform float4x4 WorldViewProj,        uniform float4x4 World,        uniform float4x4 ViewIT){    v2f OUT;    // Position in screen space.    OUT.Position = mul(IN.Position, WorldViewProj);    // pass texture coordinates for fetching the normal map    OUT.TexCoord.xyz = IN.TexCoord;    OUT.TexCoord.w = 1.0;    // compute the 4x4 tranform from tangent space to object space    float3x3 TangentToObjSpace;    // first rows are the tangent and binormal scaled by the bump scale    TangentToObjSpace[0] = float3(IN.Tangent.x, IN.Binormal.x, IN.Normal.x);    TangentToObjSpace[1] = float3(IN.Tangent.y, IN.Binormal.y, IN.Normal.y);    TangentToObjSpace[2] = float3(IN.Tangent.z, IN.Binormal.z, IN.Normal.z);    OUT.TexCoord1.x = dot(World[0].xyz, TangentToObjSpace[0]);    OUT.TexCoord1.y = dot(World[1].xyz, TangentToObjSpace[0]);    OUT.TexCoord1.z = dot(World[2].xyz, TangentToObjSpace[0]);    OUT.TexCoord2.x = dot(World[0].xyz, TangentToObjSpace[1]);    OUT.TexCoord2.y = dot(World[1].xyz, TangentToObjSpace[1]);    OUT.TexCoord2.z = dot(World[2].xyz, TangentToObjSpace[1]);    OUT.TexCoord3.x = dot(World[0].xyz, TangentToObjSpace[2]);    OUT.TexCoord3.y = dot(World[1].xyz, TangentToObjSpace[2]);    OUT.TexCoord3.z = dot(World[2].xyz, TangentToObjSpace[2]);    float4 worldPos = mul(IN.Position, World);    // compute the eye vector (going from shaded point to eye) in cube space    float4 eyeVector = worldPos - ViewIT[3]; // view inv. transpose contains eye position in world space in last row.    OUT.TexCoord1.w = eyeVector.x;    OUT.TexCoord2.w = eyeVector.y;    OUT.TexCoord3.w = eyeVector.z;    return OUT;}///////////////// pixel shader //////////////////float4 BumpReflectPS(v2f IN,                uniform sampler2D NormalMap,                uniform samplerCUBE EnvironmentMap,                uniform float BumpScale) : COLOR{    // fetch the bump normal from the normal map    float3 normal = tex2D(NormalMap, IN.TexCoord.xy).xyz * 2.0 - 1.0;    normal = normalize(float3(normal.x * BumpScale, normal.y * BumpScale, normal.z));     // transform the bump normal into cube space    // then use the transformed normal and eye vector to compute a reflection vector    // used to fetch the cube map    // (we multiply by 2 only to increase brightness)    float3 eyevec = float3(IN.TexCoord1.w, IN.TexCoord2.w, IN.TexCoord3.w);    float3 worldNorm;    worldNorm.x = dot(IN.TexCoord1.xyz,normal);    worldNorm.y = dot(IN.TexCoord2.xyz,normal);    worldNorm.z = dot(IN.TexCoord3.xyz,normal);    float3 lookup = reflect(eyevec, worldNorm);    return texCUBE(EnvironmentMap, lookup);}

Pixel_VSOutput TnLPixelVS(const in a2v IN                            PARAM_NUMBERBONES){    Pixel_VSOutput Out;    //Skin inputs    float4x3 worldMatrix;    SKIN_MATRIX(worldMatrix)    // compute the tranform from tangent space to object space    float3x3 TangentToObjSpace;    float3 binormal = cross(IN.Tan, IN.Nor);    TangentToObjSpace[0] = float3(IN.Tan.x, binormal.x, IN.Nor.x);    TangentToObjSpace[1] = float3(IN.Tan.y, binormal.y, IN.Nor.y);    TangentToObjSpace[2] = float3(IN.Tan.z, binormal.z, IN.Nor.z);    Out.TexCoord1.x = dot(worldMatrix[0].xyz, TangentToObjSpace[0]);    Out.TexCoord1.y = dot(worldMatrix[1].xyz, TangentToObjSpace[0]);    Out.TexCoord1.z = dot(worldMatrix[2].xyz, TangentToObjSpace[0]);    Out.TexCoord2.x = dot(worldMatrix[0].xyz, TangentToObjSpace[1]);    Out.TexCoord2.y = dot(worldMatrix[1].xyz, TangentToObjSpace[1]);    Out.TexCoord2.z = dot(worldMatrix[2].xyz, TangentToObjSpace[1]);    Out.TexCoord3.x = dot(worldMatrix[0].xyz, TangentToObjSpace[2]);    Out.TexCoord3.y = dot(worldMatrix[1].xyz, TangentToObjSpace[2]);    Out.TexCoord3.z = dot(worldMatrix[2].xyz, TangentToObjSpace[2]);    float3 worldPos = mul(float4(IN.Pos,1), worldMatrix);    // compute the eye vector (going from shaded point to eye) in world space    float3 eyeVector = Eye - worldPos;    Out.TexCoord1.w = eyeVector.x;    Out.TexCoord2.w = eyeVector.y;    Out.TexCoord3.w = eyeVector.z;    Out.Pos  = mul(float4(worldPos, 1), ViewProjection);    Out.Tex0 = IN.Tex0;    return Out;}float4 TnLPixelPS(const in float2 tex0        : TEXCOORD0,                    const in float4 tex1      : TEXCOORD1,                    const in float4 tex2      : TEXCOORD2,                    const in float4 tex3      : TEXCOORD3,                    uniform bool includeEnvironmentHigh) : COLOR{    //Get the bumped normal    //float3 bumpN = tex2D(BumpSampler, tex0).xyz * 2.0 - 1.0;    float3 bumpN = float3(0,1,0);    //bumpN = normalize(float3(bumpN.x * BumpScale, bumpN.y * BumpScale, bumpN.z));     //transform the bump normal into world space    float3 worldNorm;    worldNorm.x = dot(tex1.xyz, bumpN);    worldNorm.y = dot(tex2.xyz, bumpN);    worldNorm.z = dot(tex3.xyz, bumpN);    //get the packed VtoE vector out - snip, that's fine    worldNorm = normalize(worldNorm);    return float4(worldNorm, 1);}

//Uses interpolated vertexToEye vector as this does not change much over verticesfloat4 TnLPixelPS(const in float2 tex0        : TEXCOORD0,                    const in float3 nor       : TEXCOORD1,                    const in float3 tan       : TEXCOORD2,                    const in float3 vertexToEye  : TEXCOORD3,                    uniform bool includeEnvironmentHigh) : COLOR{    //Normalize interpolated    float3 N = normalize(nor);    float3 T = normalize(tan);    float3 VtoE = normalize(vertexToEye);        //Get the bumped normal    float3 bumpN = tex2D(BumpSampler, tex0).xyz * 2.0 - 1.0;    bumpN = float3(bumpN.x * BumpScale, bumpN.y * BumpScale, bumpN.z);     //Construct binormal    float3 B  = cross(T, N);    //transform the bump normal into world space    float3 worldNorm = normalize(T * bumpN.x + B * bumpN.y + N * bumpN.z);    float3 reflection = reflect(-VtoE, worldNorm);    float4 envReflection = GetEnvironmentReflection(reflection, includeEnvironmentHigh);    //Calculate the lighting    float4 diffuse;    float4 specular;    ComputeColorDS(worldNorm, VtoE, diffuse, specular);    //Apply the diffuse map    float4 color = lerp(float4(SampleBaseTexture(tex0).rgb, 1) * diffuse + specular, envReflection, Reflectance);    color.a = Visibility;    return color;}

Pixel_VSOutput TnLPixelVS(const in a2v IN                            PARAM_NUMBERBONES){    Pixel_VSOutput Out;    //Skin inputs    float3 P;    float3 N;    float3 T;    SKIN_POINT_2VEC(float4(IN.Pos, 1), IN.Nor, IN.Tan, P, N, T)    N = normalize(N);    T = normalize(T);    float3 B = cross(T, N);    float3 VtoE = Eye - P; //normalize this in PS    Out.TexCoord1 = float4(T.x, B.x, N.x, VtoE.x);    Out.TexCoord2 = float4(T.y, B.y, N.y, VtoE.y);    Out.TexCoord3 = float4(T.z, B.z, N.z, VtoE.z);    Out.Pos  = mul(float4(P, 1), ViewProjection);    Out.Tex0 = IN.Tex0;    return Out;}