[Bf-cycles] Shadow Pass including IBL + mesh Lights (VFX)

Thomas Beck software at plasmasolutions.de
Sun May 11 19:07:03 CEST 2014

Brecht, thanks very much for this first attempt ... I will compile it as
soon as I come back home this evening - are there any things I should
especially be aware of or that I should try to avoid?

2014-05-11 15:32 GMT+02:00 Brecht Van Lommel <brechtvanlommel at pandora.be>:

> I attempted to improve the shadow pass now to take the light shaders
> into account, which should make background lights actually useful in
> the shadow pass. There's a patch here that you can test:
> https://developer.blender.org/D524
> There's a number of tricky issues to solve there though. I'll see how
> far I get with those, not sure if I will have time to solve them.
> On Sun, May 11, 2014 at 3:29 PM, Brecht Van Lommel
> <brechtvanlommel at pandora.be> wrote:
> > On Sun, May 11, 2014 at 11:51 AM, Thomas Beck
> > <software at plasmasolutions.de> wrote:
> >> As Thomas Dinges pointed out it's just a matter of deleting one check in
> >> kernel_emission.h to support mesh lights in the shadow pass (or is there
> >> more to do, Brecht?).
> >
> > It's actually more complicated than that, due to the way we reuse rays
> > for BSDF sampling of lights. Removing the check will give results that
> > will be slightly or very wrong depending on the scene setup.
> >
> > Brecht.
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