Issue with Fresnel + Normal Map

Node-based Shader Editor
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Noors
Posts: 2
Joined: Thu Nov 15, 2018 4:55 pm

Issue with Fresnel + Normal Map

Post by Noors »

Hi,
I'm not sure what possibly went wrong with this fairly simple setup :
AS_FresnelTrouble.JPG
AS_FresnelTrouble.JPG (74.13 KiB) Viewed 3157 times
The normal map does absolutely nothing tho the preview seems to show it ok.
I use the last version me thinks (1.5.9)
Thanks !
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Amplify_Borba
Posts: 1239
Joined: Mon Jul 24, 2017 9:50 am

Re: Issue with Fresnel + Normal Map

Post by Amplify_Borba »

Hello, thank you for getting in touch and for your support!

We've ran some tests on our side and have confirmed that there's indeed an issue with the Fresnel node, so we'll be tackling it as soon as possible, apologies for the inconvenience.

We'll get back in touch as soon as we have any developments!
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jake_from_bend
Posts: 10
Joined: Tue Oct 23, 2018 6:50 pm

Re: Issue with Fresnel + Normal Map

Post by jake_from_bend »

Hi Noors,
I'm not on the same version of Amplify as you, but I believe the fresnel node expects a world-space normal map as input, which might be why it isn't working for you.

As far as i can tell, ASE doesn't include a tangent-to-worldspace conversion node, so I created my own function to do that. Here's what that graph looks like:
TangentToWorld.JPG
TangentToWorld.JPG (186.46 KiB) Viewed 3134 times
Hope this helps.
-Jake
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Amplify_Borba
Posts: 1239
Joined: Mon Jul 24, 2017 9:50 am

Re: Issue with Fresnel + Normal Map

Post by Amplify_Borba »

We've just released a new build in which we've fixed the issue with the 'Fresnel' node's Tangent Normal vectors on Surface shaders, feel free to download the latest version through our website.

Regarding converting tangent to world space, we do offer the Transform Direction node which does that type conversion:

Image

The wiki node page still needs to be updated though, since we've added this sometime after introducing the node.

Hope this helps!
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Noors
Posts: 2
Joined: Thu Nov 15, 2018 4:55 pm

Re: Issue with Fresnel + Normal Map

Post by Noors »

Thanks a lot !
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