Chrome ball inside Glass Raytracing ON doesn't work

Hello!
Opened the starter map, duplicated the chrome material and set roughness to 0. Duplicated glass shader and made changes as directed in this tutorial.
Ray Traced Refraction - UE4 Materials 101 - Episode 46 - YouTube


Modeled a two sided glass spherical pot (normals of the inner face are correctly facing inwards and outer shell facing outwards).
RT is on in PPV for both reflections and refractions with 5+ bounces. Without glass, the three chrome balls are correctly internally reflecting each other and the environment. With glass, they still reflect each other once (single bounce) but not the environment (everything else is black).
Turning on/off cast shadow on the glass object doesn’t change anything.

Attached the image to show glass material and PPV settings. The 3 balls on the right side are identical to the 3 inside the glass, that’s the ref as to what the RT reflection on the inside is supposed to look like.

Is this still being developed or am I doing something wrong?
PLEASE help!

Indy

If I turn the Translucency to Raster instead, this is sort of the look I want but with the correct RT refraction method

The problem is ray tracing.

If all you want is an end result, try throwing the glass material into the forward shader by changing the transparency mode settings.
That should force mixed rendering and make an accurate looking effect possible.

If you want the end result to be raytraced…
I think currently your best bet is the custom nvidia branch for .25
BUT unless you see there’s improvement on translucency in the log, it will probably be the exact same end result. And it will cost you time to build from source without acrually providing an improvement, so check beforehand.

The release notes are usually within git.

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Thanks for that!
So we are certain that this is currently not achievable with raytracing only, using the default UE from Epic?

Certain? No.
They keep making changes.
However people have consistently complained about Rey traced glass not working as expected since the day ray tracing was added…

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