Emission NW
Author: Nikolai Wüstemann
Relight a CG render with another CG render. No geo needed.
If you have a rendering that should emit light to your scene, but you have no interactive light pass, there is not all hope lost. If you can manage to get your hands on a rendering of your environment, for example by using a Lidar scan + ScanlineRender, you can then use Emission to emit light from your FX or CG element onto your environment.

Light source with PWorld and ZDepth; Environment with PWorld and Normals:


