Author Topic: ShadowCatcher lights not visible in alpha  (Read 3500 times)

2015-04-27, 16:35:20

lmikkelb

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Hey!
Does anyone know how to get the lights included in the alpha  with ShadowCatcherMtl, when rendering with  alpha mode: For composting ? or is it not supported yet?

2015-04-27, 17:09:07
Reply #1

maru

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There is "shadowcatcher illuminator" option for lights, but I can't get it visible in alpha.
Marcin Miodek | chaos-corona.com
3D Support Team Lead - Corona | contact us

2015-04-27, 18:28:37
Reply #2

lmikkelb

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Yes . look`s like its not incuded in this alpha mode. Is this  a bug or is it  just not supported yet? 

2015-04-28, 09:10:01
Reply #3

Ludvik Koutny

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2015-04-28, 11:13:47
Reply #4

maru

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That's what I did but still it doesn't seem to work. Direct light is not visible on the shadowcatcher, only shadows and GI. 
Marcin Miodek | chaos-corona.com
3D Support Team Lead - Corona | contact us

2015-04-28, 11:39:28
Reply #5

lmikkelb

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yes alpha mode"for compositing" not rendering lights that hit the shadowcatcher material.

2015-06-09, 11:49:19
Reply #6

Ludvik Koutny

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2015-10-11, 22:32:24
Reply #7

Ondra

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That is by design. When using the compositing mode, you should place the beauty pass over the background without multiplying it with alpha (assume it has premultipled alpha). The alpha only modulates the background, but it should not modulate the beauty pass to get a correct result. If there was solid alpha below illumination from illuminators, that would make light from one source (scene illuminator) occlude light from other sources (background photo plate) - that is not how light works.
Rendering is magic.How to get minidumps for crashed/frozen 3ds Max | Sorry for short replies, brief responses = more time to develop Corona ;)