i took this from this posting and repost it here to find it anytime :D

https://forums.unrealengine.com/t/change-post-process-material/448103

I got the kind permission of Teddy from Quixel to share their old nDo script for Photoshop to create normal maps from color maps or from b/w masks. 

The script seems to be eradicated from the internet for years, so perhaps it helps someone if it can be found here again.
Unfortunately I only have the version 0.6.66.

Since Adobe seems to phase out their 3D support and with it seemingly also their internal normalmap maker tool, and also since the Quixel suite is likely to be abandoned, the old nDo script comes in handy again when we want to create quick normalmaps right inside of photoshop, without having to mess with other software or online apps.

Download the script here

Then place the nDo folder right into the root of C:

Then open Photoshop and drag'n'drop the file

nDo.atn

right into the actions window of PS.

When there is no Actions Tab, just open the Window menu and activate it.

Then just select the nDo script and press play, whilst having some kind of texture file open.

Then play around with all of its settings.
In order to create very deep normalmaps, you have to work with several layers that can be overlayed over another, each having a slightly higher radius.

For that author your first micro detail normal, then press duplicate, set it to overlay and adjust a higher radius and perhaps lower the depth a bit, then repeat the process until you are satisfied. Of course it helps to also take the other slider options into account, but that heavily depends on the source texture material.

Don't forget to flatten your normal and flip its green channel when exporting for Unreal (DX normal format)

Big THX to Teddy and all people who worked on this game changer back in the day!

my lumen attempt.
a guitar from the inside. made this scene some years ago and never finished it. only a directional light was used here. didn't get the warm up to work so exposure comes late #ue5 #lumen #unrealengine 

ye...finally i get some routine and some proper modeling time in blender.

see my first model!
it's based on the awesome tutorial by MAR

https://www.youtube.com/watch?v=rEBwBrRzyhw

Not really something new and you can find the fix elsewhere on the internet too,

but since i tend to forget this handy little property, i'll archive this here too:

problem: when using ray tracing and also having WPO in use e.g. in your vegetation shader, your polygons will be displayed twice.

to fix this, click on your actor, open the advanced rollout for rendering and turn on:

- evaluate world position offset

this will remove the static rendered geometry from your object and also remove the weird shadows that come with it.

however there is currently (UE v4.26.1) no fix for this when using instanced meshes. so you can only disable any WPO effects from your grasses when you placed these as instanced geometry from the foliage tool.

i will update this post once i found a solution

[EDIT]
So yea there is a weird workaround. will shared it in one of his videos here:

basically ou would make a blueprint turn that tick on, make an actor foliage actor and then paint the thing

currently i prepare some small tutorial on how to blend a virtual landscape texture onto objects. and i got a bit carried away..

result is this .... thingy
no one knows why and what it does. but it put the starter content PFX to good use :D

Learn how to create a simple mission marker in Unreal Engine 4 Features of it are: 

• renders above all other objects 
• stays the same screensize regardless how far the player is away 

Please consider supporting me here https://www.patreon.com/saschahenrichs 

you see the blueprint of a projectile  that is some kind of portal and places itself in front of the hitlocation.

the "get dan character" is nothing else than the player character. So that the object also rotated itself towards the player

[EDIT]
I did it wrong in my post. You should apply some simple math on the flowmap for it to work correctly.
Find this enlightening post from UNREAL GEMS to get the correct way on how to utilize flowmaps for anisotropy

[edit] The below approach is not completely correct. Follow the above Tutorial to get it right!

This is obviously for the case you do not want to map your object. so a triplanar mapping.
Ofc this is also possible with normal UV's 

you can find an anisotropy map here:
https://www.textures.com/download/pbr0028/133064