Colormath screen operation

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sarmath
Posts: 97
Joined: Wed Feb 07, 2018 1:22 pm

Colormath screen operation

Post by sarmath » Thu Jan 16, 2020 4:11 pm

Is it possible that we get screen operation (similar to cycles) in colormath node? Its very useful when mixing imperfection black and white textures.
Thanks
Windows 10 Pro Ryzen 9 3900x 2xGTX 1070ti 32 GB RAM

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B.Y.O.B.
Developer
Posts: 3681
Joined: Mon Dec 04, 2017 10:08 pm
Location: Germany
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Re: Colormath screen operation

Post by B.Y.O.B. » Thu Jan 16, 2020 4:42 pm

For the time being, you can build it out of basic nodes.
The operation can be found here: https://photoblogstop.com/photoshop/pho ... -explained
result = 1−(1−A)×(1−B)

Node setup, upper left Cycles, bottom Lux:
Attachments
Nodes
Nodes
Lux
Lux
Cycles
Cycles

sarmath
Posts: 97
Joined: Wed Feb 07, 2018 1:22 pm

Re: Colormath screen operation

Post by sarmath » Thu Jan 16, 2020 8:12 pm

Thanks for your help, will try it. :!: :)
Windows 10 Pro Ryzen 9 3900x 2xGTX 1070ti 32 GB RAM

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