How to make Light pass Through a Glass Material?


Im Still fighting with this old problem of Light not passing through glass materials.

Im trying to recreate 90s CG Art, but it still keeps looking bad

Can anyone help?

What does ‘passing through’ mean in this context? Refraction, transmission, subsurface scattering?

like the shadows act like if the material was fully opaque. Glass in real life absorbs only 4% of light meaning its shadow should be 96% opaque, but in my case the shadows behind glass objects are 100% opaque

Translucent shadows aren’t currently supported in UE to my knowledge (outside of the PT). There may be ways to cheat them in material settings, but I’d be unsure.

Glass in real life absorbs only 4% of light meaning its shadow should be 96% opaque, but in my case the shadows behind glass objects are 100% opaque

You would think we would get the option by now to make a material cast 0-100% black to clear shadows. Lights can do that with shadow amount but it’s for everything in the scene.

i have managed to solve my problem(s).

it was much more complex, i hadnt properly set up the skylight,had issues with a broken light rebuild, and also fog.

The thing i was searching for was Transmission (and i cant implement it anyway), weird i didnt find documentation for it before making this somewhat nonsensical post.

This is what i have done to fix my scene:

image
Result:

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