[Bf-cycles] Why is the shadow pass ignoring mesh and background MIS?

Mohamed Sakr 3dsakr at gmail.com
Sat Aug 22 17:08:52 CEST 2015

Hey Sergey,

I checked what Gottfried said, and I guess he is correct
may be assign the path "at any point if it hits an emission BSDF" to the
Emission pass? "so right now if first bounce is diffuse, and it hit an
emission at any bounce, it will get assigned to the diffuse pass, same
thing to other passes, so may be assign it to emission pass "or shadow
pass" depending if it encountered emission BSDF""

On Sat, Aug 22, 2015 at 4:32 PM, Gottfried Hofmann <
gottfried at blenderdiplom.com> wrote:

> Hello Cycles Developers,
> while many VFX artists find the Cycles shadow pass limited, I wonder
> wether it could be improved by also taking mesh lights with MIS and the
> world background with MIS (basically all shadow rays) into account?
> Is there a specific reason why it only recognizes lamps? Most VFX work
> is done with an HDRI background of the set, so the change mentioned
> above would be real improvement.
> Cheers,
> Gottfried
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