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How can I make the Layer reflections AOV show up on an Alpha background
Posted: Wed Apr 15, 2026 10:07 am
by MIaxd
How can I make the Layer reflections AOV display on an Alpha background, like the cover image in the link below?
https://help.otoy.com/hc/en-us/articles/31309595467291-Post-Production-Render-AOV-Masking
Re: How can I make the Layer reflections AOV show up on an Alpha background
Posted: Thu Apr 16, 2026 8:41 am
by bepeg4d
Hi,
Have a look at the following example scene:
First of all you need to enable the "Alpha channel" option in Kernel settings.
Then, in Output AOV Compositor tab you need to create a new Output AOV.
In the first layer you need to add a Render AOV of the Reflections pass, and on top of it a second layer with Mask node connected to Reflection pass in Luminance mode:
Happy GPU rendering!
ciao,
Beppe
Re: How can I make the Layer reflections AOV show up on an Alpha background
Posted: Fri Apr 24, 2026 7:26 am
by MIaxd
bepeg4d wrote: Thu Apr 16, 2026 8:41 am
Hi,
Have a look at the following example scene:
AlphaReflectionAOV.zip
IMG_7462.jpeg
First of all you need to enable the "Alpha channel" option in Kernel settings.
Then, in Output AOV Compositor tab you need to create a new Output AOV.
In the first layer you need to add a Render AOV of the Reflections pass, and on top of it a second layer with Mask node connected to Reflection pass in Luminance mode:
IMG_7463.jpeg
Happy GPU rendering!
ciao,
Beppe
That's great, thanks!