Jump to: Board index » General » Fusion

How to work with LightSelect Render Elements ?

Learn about 3D compositing, animation, broadcast design and VFX workflows.
  • Author
  • Message
Offline
User avatar

Bernhard Rieder

  • Posts: 115
  • Joined: Tue Aug 04, 2015 6:49 pm

How to work with LightSelect Render Elements ?

PostWed Sep 30, 2015 9:12 pm

- simple scene with a teapot
- two different lights (one orange, one blue)

Teapot has
- Reflection
- Refraction

I render the VrayLightSelect Passes. I can then change the color of each light.
However, the color is of course not changing in the reflection pass or the refraction pass.

How do you handle that ?



Thx for any little hints, tips, tricks and ideas !
Offline
User avatar

Chad Capeland

  • Posts: 3308
  • Joined: Mon Nov 10, 2014 9:40 pm

Re: How to work with LightSelect Render Elements ?

PostWed Sep 30, 2015 9:21 pm

You're increasing dimensionality at that point. You either need to render per light, per pass, or per light*pass. Obviously, this increases the number of passes, so you have to decide if you really want to do that.
Chad Capeland
Indicated, LLC
www.floweffects.com
Offline
User avatar

Bernhard Rieder

  • Posts: 115
  • Joined: Tue Aug 04, 2015 6:49 pm

Re: How to work with LightSelect Render Elements ?

PostWed Sep 30, 2015 11:31 pm

hmm.. ok.. makes sense.. but how would you break it up ?

for instance.. let's say you would like to separate the reflection... so that you can also change the reflection pass for each light... uaahh.. I mean.. is this actually possible ?

That's what I would be curious !
Offline
User avatar

Chad Capeland

  • Posts: 3308
  • Joined: Mon Nov 10, 2014 9:40 pm

Re: How to work with LightSelect Render Elements ?

PostThu Oct 01, 2015 1:20 am

It is, but it increases the number of passes. So if you had 12 passes before, and you have 35 lights, you will need to render 420 passes. Your comp will also become larger and slower.
Chad Capeland
Indicated, LLC
www.floweffects.com
Offline
User avatar

Stefan Ihringer

  • Posts: 257
  • Joined: Mon Nov 10, 2014 10:40 pm

Re: How to work with LightSelect Render Elements ?

PostSat Oct 03, 2015 12:21 pm

If total control is unfeasible (as chad has demonstrated) you could also render beauty passes for each light (turning off the others if VRay doesn't support this). You can subtract that pass from the main beauty and add a graded version back. If you use a reflection filter pass you can restrict that effect to only your reflective surfaces.
blog and Fusion stuff: http://comp-fu.com/2012/06/fusion-script-macro-collection/

Return to Fusion

Who is online

Users browsing this forum: No registered users and 53 guests