I decided to make an old parquet with displacement and looks like I found a bug. Displacement applies only first map slot in the CoronaMultiMap and ignores any other slots.
On the attached render you can see only one type of displacement, but CoronaMultiMap has two different maps.
Just a silly thought came to my mind, maybe you’re confusing instances with elements? Does your parquet planks are separate objects or single mesh?
Edit: i just discovered that if your planks are instances and not unique objects, then indeed multimap passes through displacement only from one map. I think this is bug afterall, since diffuse is working as expected.
Exactly! My parquet planks are separate object instances. If i make planks unique then Corona will eat all of my 24GB of RAM…
Thank you for help! I hope it’s possible to fix.





