Holdout support

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Dade
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Holdout support

Post by Dade » Tue Aug 04, 2020 11:52 am

Added the support for holdout, see https://github.com/LuxCoreRender/LuxCore/issues/423 for some detail.
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CodeHD
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Re: Holdout support

Post by CodeHD » Tue Aug 04, 2020 2:24 pm

This sounds like a great feature!

How is it going to behave in combinations? For example, a holdout material behind glass?

I can imagine to place it behind a window, so that you get the glass reflections from inside the room and the remaining transparency to make an "overlay" with another video that shows the outside.

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Dade
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Re: Holdout support

Post by Dade » Tue Aug 04, 2020 2:43 pm

CodeHD wrote:
Tue Aug 04, 2020 2:24 pm
How is it going to behave in combinations? For example, a holdout material behind glass?

I can imagine to place it behind a window, so that you get the glass reflections from inside the room and the remaining transparency to make an "overlay" with another video that shows the outside.
At the moment, the red suzanne (the demo scene in linked issue) would be visible trough a glass (i.e. the holdout object is normally visible in anything but first path bounce). I assume this is the expected behavior but can be changed :?:
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lacilaci
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Re: Holdout support

Post by lacilaci » Tue Aug 04, 2020 3:53 pm

This is super nice to have, thanks

SteffenD
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Re: Holdout support

Post by SteffenD » Mon Aug 31, 2020 4:41 pm

Very nice and useful. But are there plans to also support the Collection "Holdout" property (or what it might be called):
Image

This is already working in BlendLuxCore for "Indirect Only" right next to it.

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B.Y.O.B.
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Re: Holdout support

Post by B.Y.O.B. » Mon Aug 31, 2020 6:55 pm

Yes, it's planned.

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