Hi, whats the proper way of setting up/compositing fog if i wanna do 2 renders, 1 with no fog and another one only with fog element, that would produce a similar result as if i was having everything in 1 scene? Hope i described this proper.
Thanks
32-bit linear add I would imagine…
Yes, but how? Black objects diffuse? Only diffuse? No gi? How would the second pass be? thanks!
Black material in override, turn off GI and maps. Make it render as quick as possible. Add the VrayEnvFog environment effect and select which lights to use. And set up a gizmo works well to control the location of the fog. Should render black and white, and pretty quick. Just doing it on a project now!
Thanks. And i want scatter gi i should use a fog emmision? This was the first method that i tried and didnt work well in interiors that im doing atm.
I find in a lot of cases scatter is not needed, for clouds maybe, but arch viz not so much. If you increase the scatter times from 1 I believe you will also need GI turned back on.
Yep, and i wanna avoid having GI, so i changed the emission color to fake the gi bounces. I wouldnt go into all this trouble, but its a 3 minute video with some interiors and tight deadline so…
Thanks a lot for the help!