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Won't Fix

Votes

0

Found in

2020.3.44f1

2021.3.16f1

2022.2.2f1

2023.1.0a25

2023.2.0a3

Issue ID

UUM-27604

Regression

No

Artifacts visible when transforming any vector from world space to tangent space

-

Reproduction steps:
1. Open the “MikktspaceWorldToTangentRepro” project
2. Open the Assets/Scenes/SampleScene.unity scene
3. Select Assets/ReproModel.fbx asset in the Project Window
4. In the Inspector Window notice that the "Tangents" property is set to "Calculate Mikktspace”
5. Rotate the “ReproModel” GameObject in any axis and observe it

Expected results: “ReproModel” GameObject is rotated

Actual results: Artifacts are visible on the “ReproModel” GameObject after and during it’s rotation

Reproducible with: 2020.3.44f1, 2021.3.16f1, 2022.2.2f1, 2023.1.0a25, 2023.2.0a3
Reproduced on: Intel MacOS 13.1

Notes:

  • The issue is also visible if the "Tangents" property is set to “Import” and on the “ReproModelWithUV” GameObject
  • When the "Tangents" property is set to "Calculate Legacy" or "Calculate Legacy With Split Tangents" the issue disappears
  • The issue is not visible on the “ReproModelWithUV” GameObject in 2022.2.2f1
  1. Resolution Note:

    Thank you for reporting a bug to Unity.

    We have reviewed the issue carefully, and in this case, the team is unable to prioritize fixing this bug. There are a number of reasons we make this decision, including the impact and severity of the issue across our user and customer base, and the possibility that future plans may solve the problem in a different way, or that a workaround for the bug may be available.

    Today we will be closing this case. Thank you again for taking the time to report this issue, and please let us know if there is anything else that changes the impact or severity of this issue.

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