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Won't Fix

Votes

6

Found in

2022.3.60f1

6000.0.40f1

6000.2.0a6

6000.3.0a1

6000.4.0a1

6000.5.0a1

Issue ID

UUM-99279

Regression

Yes

Artifacts are visible when moving and viewing Alpha Clipped Geometry in front of Volumetric Clouds

-

https://discussions.unity.com/t/artifacts-caused-by-volumetric-clouds-sky-is-visible-through-clouds-around-alpha-clipped-objects/1607651

 

How to reproduce:
1. Create and open a new HDRP project
2. Import the “PalmTree.unitypackage“ into the project
3. Add the “Assets/Trees/Palm2/Palm_Desktop_Color.png“ texture onto a new Plane Game Object
4. Enable the Plane GameObject’s Shader > Surface Options > Alpha Clipping in the Inspector
5. Enable Edit > Project settings > Quality > HDRP > Lighting > Volumetrics > Volumetric Clouds
6. Add a “Volumetric Clouds“ override in the “Sky and Fog Volume“ GameObject in the Inspector
7. Pan around the Plane Game Object in the Scene view
8. Observe the Scene view

Expected result: No artifacts around the edges of the Alpha Clipped Plane
Actual result: Artifacts are visible on the edges of the Alpha Clipped Plane

Reproducible in: 6000.0.40f1, 6000.2.0a6
Could not test in: 2022.3.59f1, 6000.1.0b9 (could not test locally)

Reproduced on: Windows 11 (By the reporter)
Not reproduced on: Windows 11 Pro (24H2) (tested locally)

Note: Could not test this locally

  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.

Comments (1)

  1. mgeorgedeveloper

    Jun 05, 2025 11:52

    Please see this thread where I created a detailed video that shows a similar (but maybe not exactly the same) case where black noisy spots become visible in certain conditions (explained clearly in the thread) https://discussions.unity.com/t/black-flickering-noise-near-alpha-clipped-edges-when-volumetric-clouds-with-ghosting-reduction-is-enabled/1635942

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