Correct setup for FixRotateAboutAxisNormals?

[christofpflumm]

I’m feeling a bit stupid, because this should be quite straightforward, but somehow I can’t get the normals after a rotate about axis to work.

I use unreal engine 5.5.1. To exclude any issues with projects etc, I created a new blank project, then created a new material. I use the following node setup, from what I have read this should work?

However, you can see that the lighting is not correct:

I think I’m missing something very basic, but I can’t figure out what’s wrong here?

[christofpflumm]

I’ve just checked, same thing happens in version 5.4.4.

[3dRaven]

Cheap Actor Rotation using WPO in UE5. Fixed Normals Issue

[christofpflumm]

Thanks, interesting tutorial!

However, it turns out there never really was an issue with my setup to begin with. When I look at the viewport of the material editor, I get the following:

However, when I put exactly the same material on a cube in a level, there’s no issue at all!

So the following node setup works to rotate an object over time, just don’t let yourself be fooled by what’s shown in the material editor viewport…

Though I have to say it would be interesting to know why the material editor viewport shows this strange behaviour…