satin glass not reflected

Corona Corona for Cinema 4D General
1

As you will notice the glass with glossines 0.2 in the mirror is not reflected, how do I solve the problem?
C4d r21
Corona 6

Cattura.JPG
Cattura.JPG740×253 102 KB

2

This is a known issue. I had the same problem a few days ago.
I don’t know, what the best workaround could be, to be honest..

3

You sure?

FrostedGlassReflection.jpg
FrostedGlassReflection.jpg840×599 87.6 KB

FrostedGlassReflection.c4d (187 KB)

4

Make the mirror reflection glossiness 1.0 or enable caustics in the frosted material.

5

Probably everyone has differently. I don’t have the latest version of Cinema and Corona and I’m out of luck :wink:

Frosted & Mirror.jpg
Frosted & Mirror.jpg1920×1174 431 KB

6

…but when you turn on the caustics, everything is fine. Weird…

Frosted & Mirror_2.jpg
Frosted & Mirror_2.jpg1203×682 137 KB

7

It’s a known issue:

https://coronarenderer.freshdesk.com/support/solutions/articles/5000516180-known-bugs-and-limitations#:~:text=Corona%20Renderer%20is%20intended%20for,which%20do%20not%20cast%20shadows

  • Appearance of refractive materials changes when reflection glossiness other than 1 is used (even if it’s set to 0,999). The workaround here is to enable caustics for the refractive material.