(L) [2015/10/14] [MohamedSakr] [Re: gradient domain path tracing (GPT)] Wayback!Hey Enrico,
forget about my code [SMILEY :D] , the author (Markus) has shown his code on Github,
[LINK https://mediatech.aalto.fi/publications/graphics/GPT/]
[LINK https://github.com/mmanzi/gradientdomain-mitsuba/tree/master]
[LINK https://github.com/mmanzi/gradientdomain-mitsuba/tree/master/src/integrators/gpt]
[LINK https://github.com/mmanzi/gradientdomain-mitsuba/tree/master/src/integrators/poisson_solver]
for BDPT gradient:
[LINK https://github.com/mmanzi/gradientdomain-mitsuba/tree/master/src/integrators/gbdpt]