bake-cycles: subsurface in/direct passes not working

[dfelinto]

if someone wants to try to fix that, read/look at the last commit here:
https://github.com/dfelinto/blender-git/tree/bake-cycles-sss

[dfelinto]

In fact, SSS is not added to the COMBINED pass either.
Thomas pointed me to kernel_subsurface.h ~152 where there is a hack/trick to get it working for RenderPasses. I still can't make much sense of it.

@brechtvl any clues on what can be done here? While debugging I found out the part of the issue is that kernel_path_integrate_lighting() is returning false for SSS all the time.

[dfelinto]

I just updated bake-cycles-sss with a better attempt, similar to what we (you) did for Ambient Occlusion. Things are better, but not perfect yet. At least not when I compare with the RenderLayer results. Example file: http://www.pasteall.org/blend/27910