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

[Gottfried Hofmann]

Thanks for the explanation!

On 22.08.2015 18:26, Brecht Van Lommel wrote:
> The reasons are pretty technical. It's certainly possible, just a
> bunch of work to make it work well, see here:
> https://developer.blender.org/D524
>
> 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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