Bevel Shader Edge Function

inline float3 DetectSmoothEdge(float3 edge, float3 junkNorm, float3 sharpNorm, float3 edge0, float3 edge1, float3 edge2) {
edge = max(0, edge - 0.965) * 28;
 float allof = edge.r + edge.g + edge.b;
float border = min(1, allof);
float3 edgeN = edge0*edge.r + edge1*edge.g + edge2*edge.b;
float junk = min(1, (edge.g*edge.b + edge.r*edge.b + edge.r*edge.g)*2);
return normalize((sharpNorm*(1 - border)+ border*edgeN)*(1 - junk) + junk*(junkNorm));
}