Indirect specular\glossy with alpha

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Rivental1
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Joined: Tue Mar 05, 2019 9:15 pm

Indirect specular\glossy with alpha

Post by Rivental1 » Sat Jan 11, 2020 10:17 pm

Hello. Is it possible to get indirect glossy (or any other pass) with alpha? In cycles no. And it is strange for me, after usage v-ray , corona and physical render from cinema 4d where each pass it is image with transperent background. It is very usefull for compositing.

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B.Y.O.B.
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Re: Indirect specular\glossy with alpha

Post by B.Y.O.B. » Sun Jan 12, 2020 12:38 am

Can't you just use the output of the Alpha AOV in compositing?
Since an alpha channel needs memory, it would increase the memory usage a lot to add an alpha channel to each AOV.
But maybe I misunderstand what you mean.

Rivental1
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Joined: Tue Mar 05, 2019 9:15 pm

Re: Indirect specular\glossy with alpha

Post by Rivental1 » Sun Jan 19, 2020 10:05 am

Thanks!
Well, now it looks like this:
Glossy.jpg
So, how to remove black area and leave only glossy? I tried to add diffren keyers in compositor, but somehow they do not work.

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Egert_Kanep
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Re: Indirect specular\glossy with alpha

Post by Egert_Kanep » Tue Jan 21, 2020 7:22 am

No need to key, you could pull luminance key if really wanted. But aov's are supposed to be added together. Perhaps you need something else than indirect glossy

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