Anisotropy dosen't work in unreal 5.5 !

Development Rendering
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1

Hi Everyone,

i import my project in unreal 5.5 ( I tried also with the unreal sample content)
here the result in unreal 5.5

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image1318×1104 63.3 KB

result in unreal 5.3

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image1054×1014 62.8 KB

(I fîllup a bug report but I didn’t receive a response after a few weeks I thought I was wrong)
maybe I need to change some parameters in unreal ?

thank you for your help.
Daniel

2

Engine shaders changed a lot because of the Substrate feature recently added.

I would stick to 5.3 for a while.

3

thank’s for the heads up

i wanted to try the new lumen raytracing because they remove the raytracing in UE 5.4
(PLEASE ! - Don't remove Raytracing Reflection (Deprecated) in 5.4 - #13 by Rawalanche)
I tried also in substrate with the sample project but it seems not working also

But not having the anisotropy is like coming back 5 years in quality all the metals look dull.

so yeah, there’s no choice but to stay in 5.3 until they fix it.
Have a nice day.

4

I can’t reproduce this.

Anisotropy works correctly for me in 5.5 for both substrate and legacy materials.

5

Hi Arkiras,

Thanks for your quick response

Good to know,

it’s strange i tried on my two computers I have the same issue
I am using layer material maybe it’s why ?

6

Yeah that could be, I haven’t tested with layered materials

7

In 5.4 anisotropy doesn’t work for Nanite objects (without Substrate). Perhaps it’s the same in 5.5?

Edit: just to add - Anisotropy also doesn’t work with RectLight or HDRI backgrounds in UE5.4.

8

Yes, Anisotropy is not working for me with a Rect Light (works with Point Light) in a Substrate material and UE 5.5.4.

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image1681×1842 155 KB

9

Anisotropy doesn’t work at all for me in 5.5.4 with normal materials if the mesh is using Nanite.
Nanite+Substrate works, but looks steppy

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image635×576 30.7 KB

10

This is just a limitation of rect lights, anisotropy has never worked with them. I asked about this in the substrate thread and was told they want to support it but there’s no ETA.

11

I don’t know if you resolved the issue but, specifically if nanite support is enabled for a static mesh and you are using non-substrate master material, you cannot see any visible change on specular by changing anisotropy, if you disable nanite support for the static mesh(es), the anisotropy starts to work again.

12

If anyone is still looking for answers/suggestions, please check that your viewport scalability is set to ‘high’, ‘epic’ or ‘cinematic’. Anisotropy will not be visible in your viewport or material editor if set to ‘medium’ or lower.