Ray marching

Mat- Raymarchheight function  test  (+  dynamiclight shadow.)

UE4 RayMarchHeight (Material) Test from JeongukChoi on Vimeo.

https://forums.unrealengine.com/showthread.php?119267-Your-thoughts-on-and-comments-to-Volume-Rendering-in-Unreal-Engine-4

Shader Development

https://docs.unrealengine.com/latest/KOR/Programming/Rendering/ShaderDevelopment/index.html

Creating Volumetric Ray Macher - Ryan Brucks

http://shaderbits.com/blog

http://shaderbits.com/blog/creating-volumetric-ray-marcher

Watch Dogs2 - Ray Marched fog

https://www.videogamer.com/news/watch-dogs-2s-pc-only-ray-marched-fog-looks-amazing

https://forums.unrealengine.com/showthread.php?54521-Clouds-via-ray-marching

SideFX GDC 2017 presentation - Volume to mesh in Battlefield 1

Star Citizen Explosion - frame blending

https://realtimevfx.com/t/star-citizen-explosion-vfx-breakdown/632/10

from 14m 19s

Allumette Vr

http://www.penrosestudios.com/stories/2016/4/13/introducing-allumette