Strange Corona behavior

[krassihg]

OK, thanks for the suggestions. I test it with the teapot, it rendered good. Then I did apply one default Corona material for all the geometry, and it rendered fine, so it must be some of my materials that is the culprit. It is amazing how a wrong material can create such a mess.

[romullus]

I checked the materials for Displace maps and got rid of them. It still renders this nonsense.

To be absolutely sure that it's not displacement, go to Render Settings -> Common tab and uncheck displacement option.

[maru]

This looks like a corrupted file or something similar. No chance to upload a file where this happens? Have you tried hiding objects one by one, to see with which object this is connected?

[Ludvik Koutny]

My bet would be displacement too.