after reading HW Jensen bssrdf paper (in case it'll be easy to code :) i
have a question : one part of the algorithm requires a monte carlo
integration with points lying on the surface around a point x0. So given a
float value d, we need a random point xi lying on the surface at distance d
of x0
anyone have an idea how such points can be found in a ray-tracer (we only
have a trace function) ?

M

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