How to have translucent material object reflection on a simple glossy floor ?

[MathieuLuxiris (HydarL)]

Hello,

I just want to achieve to have simple object with translucent material to have a reflection on a basic glossy floor. I tried to use raytracing and enable “Include Translucent Objects” in post process but this not seems to work.

Thanks in advance for your help !

[IvanVietnamVet1 (IvanVietnamVet)]

Hi reflections are there and that is another issue, try with this command r.Lumen.Reflections.ScreenTraces 0

[MathieuLuxiris (HydarL)]

It doesn’t seem to do anything

[IvanVietnamVet1 (IvanVietnamVet)]

@IvanVietnamVet1

r.Lumen.Reflections.ScreenTraces 0

Did you check use HW raytracing?
Anyhow here is screen shots, materials are from the starter content (glass and floor) and how project settings should look like also you will need to add PP volume and adjust additional settings to suit your needs.

Either way you should use CVar i wrote earlier, If it’s SSS opaque you don’t need to use this CVar, even for pure translucent like glass you will be able to see them at glazing angles from the get go.
Now depending of the material used for the floor you will have to raise max roughness for Lumen r.Lumen.Reflections.MaxRoughnessToTrace 0.4 (this is default) but it will affect performance severely. try with 1.0 and lower it until you are satisfied.

[MathieuLuxiris (HydarL)]

I created a new project with starter content like you, check everything and send the console variable but it still doesn’t work

[awsc (Jacky Wong)]

Use NvRTX Caustics branch has this fix:https://github.com/NvRTX/UnrealEngine/tree/NvRTX_Caustics-5.2

[MathieuLuxiris (HydarL)]

If it’s possible i prefer to not use plugin or things like that.
Maybe IvanVietnamVet can you send me your project ?