skyportal subdivision

[fraggle]

Hello,
what's the resulting number of subdivision in the following case.
HDRI Dome : Subdiv 32
Skyportal: Sudbdiv 32
Is the total 32²?
Or is the skyportal ignoring the HDRI subdivision?

Thanks

[svetlozar.draganov]

Threat them as a separate lights, nothing is being ignored.
Each light shoot its own sample rays.

[fraggle]

thanks, I was thinking that the skyportal was use to grab the ray from what is behind (outside in this case) and port it in the front (inside in this case).

[svetlozar.draganov]

Portal Lights works just as regular lights, the only difference is that their intensity and color are determined by the environment map.

[fraggle]

Thanks for the explanation

[Art48]

Does having portal lights always mean better sampling?
I remembe rgetting a scene from Evermotion where disabling the portal lights actually reduced noise and rendertime a little.

[Oleg_Budeanu]

It "converts" your environment indirect lighting into direct. So yes , it will give you better GI also , but in expense it has its own subdivisions also. So if it is not set up correctly - render time can be slower and image noisier.