Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] General Discussion => Topic started by: stalevarov on 2018-01-23, 17:26:28

Title: How to render HDRI to light group pass
Post by: stalevarov on 2018-01-23, 17:26:28
How to render HDRI to light group pass, for compose i need 2 passes of light groups, ambient light lite a HDRI map, and key light like a direct light or other, i have a solution for key light put it to light select pass, but what solution for HDRI!(in vray i can do this with dome light )
thx !
Title: Re: How to render HDRI to light group pass
Post by: TomG on 2018-01-23, 17:41:16
To add an HDRI from the Max background environment, check the "Include Environment" on any LightSelect pass (usually, an empty one, so you can control the HDRI separately). See the tutorial at https://www.youtube.com/watch?v=JRNxxzgUhSw (https://www.youtube.com/watch?v=JRNxxzgUhSw) which will cover adding regular lights, HDRI / Sky, and Light Materials.
Title: Re: How to render HDRI to light group pass
Post by: stalevarov on 2018-01-23, 17:52:26
thx ) for fast solution! and another question can i write this  in exr, and then use in nuke ?
Title: Re: How to render HDRI to light group pass
Post by: TomG on 2018-01-23, 17:57:55
Yes, you can sure do that! One thing is Max always creates separate EXRs as well as the "all-in-one" EXR, so you may have some post-render file cleanup to do.
Title: Re: How to render HDRI to light group pass
Post by: TomG on 2018-01-23, 17:59:36
(in case you didn't see the other thread on using LightMix in post, don't use any tone mapping in Corona, and use an Additive mode in post to reblend the layers, then apply your tone mapping there as well)
Title: Re: How to render HDRI to light group pass
Post by: stalevarov on 2018-01-23, 19:01:30
oh thx a lot man, about information ! so long searching for this staff!
iv use node from, from b stream and minus pass from shuffle with pass and then back it in mine stream in add! very comfortably for pass compose

ITS WORKED! see in attach!