Tangent Smoothing Tessellation

There is no smoothing in a direction parallel to the face in tessellation.



but



Of course to do this first you have to include the tangent in the depthpress.

Then

float3 pws = varying.vmesh.positionRWS;
varying.vmesh.positionRWS = PhongTessellation(pws,
p0, p1, p2, n0, n1, n2,
baryCoords, _TessellationShapeFactor);

float3 normaldelta = pws - varying.vmesh.positionRWS;

then one more phong function using t0 ,t1 ,t2

but this case sometime normal offset and tangent offset was overlaped.

float overlap = dot(varying.vmesh.normalWS, tangentdelta);

tangentdelta= tangentdelta - varying.vmesh.normalWS * overlap;

Of course it is heavy. But it's really heavy. Use LODs only when absolutely necessary.