Emissive Lighting in ue4

melviso

@PixelMasher Hi Tim, watched  your tutorial here:
https://www.youtube.com/watch?v=eVPuvCAEz4Q

Very informative, I  read this info here on ue4 doc:
https://docs.unrealengine.com/en-US/Engine/Rendering/Materials/HowTo/EmissiveGlow/index.html


At the bottom of the page:

Conclusion

Adding Emissive Lighting to any Material is very cheap and effective way to simulate a light source without adding any new lights. However keep in mind that when using Emissive Lighting the Emissive Lighting will not illuminate dynamic objects, like characters, the same way that lights will. 

But in your video, emissive lighting with volumetric lightmap seems to work well illuminating the character  or using lights rather than emissive material looks better or the info in the doc is outdated?

EDIT: U placed dynamic lights to get dynamic shadows for the character but the emissive lighting works with the volumetric lightmap to illuminate dynamic objects.

PixelMasher

in that scene there is a dynamic light at the end of the hall for cast shadows, but using the volumetric lightmap and capsule shadows also drives soft shadows,even without any lights in the scene, just based on the intensity and directionality baked into the volumetric lightmap. nowdays the volumetric lightmap can even influence the volumetric fog as well, so baked static lighting can show up in it also. I think the documentation is outdated. 

melviso

@PixelMasher Ok thanks, if the documentation is outdated, would you know if lighting channels now work with baked lighting rather than with dynamic lights?
Epic should be updating their docs.
@Eric Chadwick    Could you pls move this here https://polycount.com/discussion/215223/ue4-emissive-lighting-tutorial#latest

PixelMasher

lighting channels only work with stationary/moveable lights so they don't work with anything baked, just the realtime lighting component effects channel characters/objects.