OTOY Forums

hi

I have searched the manual and read some posts in the forum, but I have not found any information Regarding GI Clamp, that I understand.

Can someone please explain me (in a very basic language) what GI clamp does and how to use it?

Thanks

Hi

Simply put, GI clamp will compress the contribution of indirect light in a scene. This way you can use it to clear any or all fireflies in a scene and get faster renders. Usually a setting of 1 will be best, it will keep the overall illumination but you will not have have caustics in your scenes,but just play with it. If you want to have some caustics you could set higher values and will be able to keep control of the contribution from them, thereby keeping noise reduced. Try with settings between 5 - 10. A value of 0 on GI clamp will just result in direct light only and no bouncing of light in a scene.

Hope this helps.

Hi

Thanks for the explanation, it gives good meaning

Thanks

Thanks for the info, I could not figure out why my scenes were so over exposed with PMC or PT.

The default GIclamp was set to 1,000,000 for some reason.