• Global community
    • Language:
      • Deutsch
      • English
      • Español
      • Français
      • Português
  • 日本語コミュニティ
    Dedicated community for Japanese speakers
  • 한국 커뮤니티
    Dedicated community for Korean speakers
Exit
0

About exporting normal maps

Community Beginner ,
Apr 19, 2024 Apr 19, 2024

Copy link to clipboard

Copied

Hi everyone,

 

I have unwrapped a model following the automated process.

I have checked the normal map in S3DP: it looks good and has black background between the islands.

After exporting it, I've got a different map having purple/blue color for background with artefacts.

 

The question is: is there any setting allowing to get black background between islands, like in S3DP, after export?

I think it would be better for visualization.

 

Thanks a lot!Normal_Export.pngNormal_In_S3DP.png

TOPICS
Import & Export

Views

111

Translate

Translate

Report

Report
Community guidelines
Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more
community guidelines
Community Beginner ,
Apr 23, 2024 Apr 23, 2024

Copy link to clipboard

Copied

Any idea maybe? Thanks.

Votes

Translate

Translate

Report

Report
Community guidelines
Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more
community guidelines
Community Expert ,
Apr 24, 2024 Apr 24, 2024

Copy link to clipboard

Copied

Check your padding settings in Export >Settings> Global (and by individual texture set if overridden). The screenshot you show is expected when padding is set to dilation infinite.

 

Dave

Votes

Translate

Translate

Report

Report
Community guidelines
Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more
community guidelines
Community Beginner ,
May 03, 2024 May 03, 2024

Copy link to clipboard

Copied

Hi,

Thanks for reply.

Unfortunately it doesn't solve the issue.

I tried first "Dilation + Transparent" and then the other options.

Votes

Translate

Translate

Report

Report
Community guidelines
Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more
community guidelines
Community Expert ,
May 03, 2024 May 03, 2024

Copy link to clipboard

Copied

Can I ask what is to solve? The use of padding (dilation) is both expected and normal practice as it avoids issues along the seams with mipmaps.

 

Dave

Votes

Translate

Translate

Report

Report
Community guidelines
Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more
community guidelines
Community Beginner ,
May 03, 2024 May 03, 2024

Copy link to clipboard

Copied

Sure.

When I import the textures, the space between the islands is not black, it is purple as shown on the first screenshot I uploaded.

I have a black color in Substance 3D as shown in the second screenshot.

Dilation is infinite but when I change it to transparent it doesn't solve the issue.

Votes

Translate

Translate

Report

Report
Community guidelines
Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more
community guidelines
Community Expert ,
May 03, 2024 May 03, 2024

Copy link to clipboard

Copied

Having no dilation and black right up to the UV edges can cause visible issues in the seams when rendering. To rephrase my question - what issue are you having by not having them black?

 

Dave

Votes

Translate

Translate

Report

Report
Community guidelines
Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more
community guidelines
Community Beginner ,
May 03, 2024 May 03, 2024

Copy link to clipboard

Copied

If you say that having black color between islands could be an issue for rendering, in this case we can keep it so.

My last question is: why are there such artefacts and not uniform purple color?

Votes

Translate

Translate

Report

Report
Community guidelines
Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more
community guidelines
Community Expert ,
May 03, 2024 May 03, 2024

Copy link to clipboard

Copied

LATEST

The padding works by extending the colour outward from the edges, so whatever colour is on the normal map edge pixels is extended outward into the unused UV area. If a standard normal colour was used then that would also potentially show as a seam artifact on rendering.

 

Dave

 

Votes

Translate

Translate

Report

Report
Community guidelines
Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more
community guidelines
Resources