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Composite environment

Posted: Tue May 14, 2019 5:19 pm
by Taka
Hi,
I have a noob question, I like to render a scene using hdri map to light it, but composite background later applying different color correction. I can enable "Transparent Film" in camera settings but how can I retrieve background image(environment data)? In Cycle, you can do it Alpha Over Environment like screenshot below.

Re: Composite environment

Posted: Tue May 14, 2019 5:21 pm
by B.Y.O.B.
You can leave "transparent film" disabled and just enable the Alpha AOV in the renderlayer settings. The Alpha AOV will give you a mask of the background.

Here are the nodes to replicate a setup like yours.

Re: Composite environment

Posted: Tue May 14, 2019 7:28 pm
by Taka
Great! Thanks for your quick response B.Y.O.B. as usual!