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emission on transparent background?
Posted: Tue Jun 20, 2023 4:41 pm
by Dingbat
how would i go about getting the red emission on it's own transparent layer?
Re: emission on transparent background?
Posted: Wed Jun 21, 2023 7:01 am
by bepeg4d
Hi,
if caused by Post Effect, please have a look at here:
viewtopic.php?f=9&t=78227&p=403544&hili ... ha#p403544
ciao,
Beppe
Re: emission on transparent background?
Posted: Wed Jun 21, 2023 7:27 am
by Dingbat
thanks but it's not an effect
the red light comes from an emitter behind the panel (it's a tv panel with perimeter strip light) and is illuminating the wall behind
i'd like the wall to be invisible and the red light visible on a transparent background
Re: emission on transparent background?
Posted: Sat Jun 24, 2023 1:23 am
by elsksa
Have you explored render layers, AOVs, etc?
Re: emission on transparent background?
Posted: Wed Jun 28, 2023 5:48 pm
by Dingbat
i have tried and the closest i got was emission on a black background but AFAIK there's no way to composite that on a white background?
Re: emission on transparent background?
Posted: Wed Jun 28, 2023 10:22 pm
by elsksa
The black background is likely "emptiness" in the absence of encoded "alpha" transparency data. Technically, it should be possible, how (to do it in comp) is a question for an experienced compositor.