Translucency Shader

Question

Created May ’20

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Hey there,
does someone here have a translucency shader (modifier) for SceneKit they'd be willing to share?
Obviously we can do clear transparency via

node.opacity
material.transparency

but thats for clear materials.
What about translucent materials, like a blurry bathroom window or a page of paper? (Or the UIKit UINavigationbar.translucent)
I.e. the light goes through the material but is partly scattered.
There is a tutorial for a shader in unity.

Did anyone port a shader like this to Scenekit?
PS: Wikipedia also has a good article.

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Answer 1

Apple Designer OP

Apple

Jun ’20

The important step to 'activate' the blending in a shader modifier is to use the pragma:

#pragma transparent

(see SCNShadable.h)

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