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About built-in and 3rd party, classic and real-time rendering solutions, settings, workflows, etc.

White Blotches in Cinerender Renderings

svpribyl
Enthusiast

I know there was another topic with this title, However, I cannot respond to it. I am getting white blotches on surfaces in my renderings that are done with cinerender. I tried upping the environmental values as suggested in the other post, but they still have white blotches. I'm a trying to increase them more, however, I really have no idea what that is doing. Are there any other suggestions?

Steve Pribyl
MAC OS Sequoia 15.5
ArchiCAD 28
6 REPLIES 6
svpribyl
Enthusiast

Does anyone have a suggestion for this please?

Steve Pribyl
MAC OS Sequoia 15.5
ArchiCAD 28
Lingwisyer
Guru

There is a setting for the number of light bounces, I think that helps.

AC22-28 AUS 3110Help Those Help You - Add a Signature
Self-taught, bend it till it breaksCreating a Thread
Win11 | i9 10850K | 64GB | RX6600 Win11 | R5 2600 | 16GB | GTX1660

Could you add some pictures and a screenshot of your render settings (detailed settings). Also if you are using the standard renderer or Redshift.

I am using the Cinerender renderer. Lingwisyer, is more bounces better or is fewer bounces better?

See attached for examples.

Looking at West Windows.jpg

 

Looking in East Entry.jpg

 

Lookinig along West Entry.jpg

   

Steve Pribyl
MAC OS Sequoia 15.5
ArchiCAD 28

I think more bounces would make the blotches smaller if not resolve them at a point, but I have not touched CineRender since like AC23...

AC22-28 AUS 3110Help Those Help You - Add a Signature
Self-taught, bend it till it breaksCreating a Thread
Win11 | i9 10850K | 64GB | RX6600 Win11 | R5 2600 | 16GB | GTX1660

Hi, it looks as if it's your GI-settings. Change your primary method to QMC and render a small zone. The render will probably take longer and be more grainy. If the blotches disappear you know that it was the Irradiance cache method that caused the issue. Switch back to Irradiance cache and start working with the Irradiance cache settings until you are happy. Or stay with the QMC if that renders an acceptable result in a reasonable time. 

If nothing changes when you change the primary method try different secondary methods to find what causes the blotches.