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tthaley
tthaley
Participant
June 6, 2026

8K export corrupts live generator-driven height; rasterized generator output exports cleanly.

  • June 6, 2026
  • 3 replies
  • 15 views

8K export re-evaluates live generator-driven height incorrectly, contaminating exported normal maps. 4K export is clean, painted height is clean, and rasterizing the generator at 4K before exporting 8K produces clean normal maps. See attached PDF for more details.

Images:

Rendered normal map from live generator exported at 8K
Rendered normal map from generator rasterized at 4K and exported at 8K 
Normal map from live generator exported at 8K (with UV island overlay)
Normal map from generator rasterized at 4K and exported at 8K (with UV island overlay)

 

    3 replies

    tthaley
    tthaleyAuthor
    Participant
    June 10, 2026

    Here’s a DxDiag. Briefly, my system is Windows 10, AMD Ryzen 9 3900X, 1x NVIDIA GeForce RTX 2070 SUPER, 32 GB RAM, and an NVMe SSD (with at least 60 GB free when the bug occurred).

     

    From the SP About screen:

    Substance 3D Painter, version 12.0.3
    Build 5408 - b2eb59ee33f6ec3ff394db295f6cc1dadee14738

    Engine, version 9.4.3
    Build 0 - 840108d5 (Apr 27 2026)

    Bakers, version 3.22.2
    Build 0 - 96705c63

    Substance Abstract Layer, version 10.3.3
    Build 0 - Unknown

     

    Here’s a link to a stripped down version of the file that produces the normal map results I showed earlier when exporting at 8K:
    https://drive.google.com/file/d/1bKYZo8pnMHuVeAaiWO_yUWEOrJMQ-cKb/view?usp=sharing

    Cyril Dellenbach
    Community Manager
    Cyril DellenbachCommunity Manager
    Community Manager
    June 10, 2026

    Once again, thank you very much for the detailed answer. We’re able to reproduce with your project, therefore devs are now investigating. That being said, we’re still having issues reproducing it with our custom projects. I’ll keep you posted as soon as I have something to share.

    Cyril Dellenbach (Micro) | Product Manager | Substance Painter
    Cyril Dellenbach
    Community Manager
    Cyril DellenbachCommunity Manager
    Community Manager
    June 9, 2026

    We don’t reproduce at the moment. Could you share your Painter version and your hardware specifications, so we can try to reproduce under the same conditions?

     

    Let me know.

    Cyril Dellenbach (Micro) | Product Manager | Substance Painter
    Cyril Dellenbach
    Community Manager
    Cyril DellenbachCommunity Manager
    Community Manager
    June 8, 2026

    Hello ​@tthaley 

     

    Thank you very much for the well detailed bug report.

     

    We’re investigating and we’ll get back to you as soon as we have an answer.

     

    Cyril Dellenbach (Micro) | Product Manager | Substance Painter
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