topic Re: Grainy Ambient Occlusion in Visualization

Grainy Ambient Occlusion

Anonymous — Thu, 11 May 2023 09:42:50 GMT

Hello,

Just upgraded from 17 and started messing around with the new CineRender settings. I have run into a problem where the shadows created by Ambient Occlusion are very grainy.

I would figure that the way to fix this would be to increase the sample size. However, the sampling options are all greyed out in the detailed options. What gives?

Re: Grainy Ambient Occlusion

Anonymous — Tue, 21 Jul 2015 18:45:23 GMT

Ambient Occlusion for CineRender can be found in two locations in the interface:
• In Surface Settings, as a channel shader (see screenshot above).
• In PhotoRender Settings (Detailed view), as a global effect and calculated throughout the entire scene in Render Settings.

You need to uncheck "use physical render" checkbox to enable the AO global settings to change.

Re: Grainy Ambient Occlusion

Anonymous — Tue, 21 Jul 2015 19:27:41 GMT

I was looking at this video: https://www.youtube.com/watch?t=55&v=0CbucHv0_eQ
on Ambient Occlusion and I am confused because the "Evaluate Transparency" option is not listed under the AO scene settings as shown in the video. Am I missing something? The only place I can enable it is under the surface settings when using AO.

Re: Grainy Ambient Occlusion

Anonymous — Tue, 21 Jul 2015 19:46:54 GMT

Switching from the physical renderer worked and I know have full control over the sampling sizes. Thank you!

Re: Grainy Ambient Occlusion

Anonymous — Tue, 21 Jul 2015 20:55:51 GMT

Glad it worked 😃

HMH_AI wrote:
Switching from the physical renderer worked and I know have full control over the sampling sizes. Thank you!