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Won't Fix
Votes
0
Found in
2021.3.40f1
2022.3.35f1
6000.0.8f1
Issue ID
UUM-74471
Regression
No
[URP] Artifacts can be seen in a Material that uses Height Map when zooming in and out to the GameObject or moving the camera
Reproduction steps:
1. Open the “ReproProject“ project
2. Open the "Assets/Samples/ZED SDK/4.1.1/Green Screen/Scenes/GreenScreen" scene
3. Zoom in and out to the “Environment/Ground” GameObject in the Scene View
4. Observe the “Environment/Ground” GameObject in the Scene View
Expected result: There are no artifacts visible in the “Environment/Ground” GameObject
Actual result: Artifacts can be seen in the “Environment/Ground” GameObject
Reproducible with: 2021.3.40f1, 2022.3.35f1, 6000.0.8f1
Reproducible on: Windows 11 Pro (22H2)
Not reproducible on: No other environment tested
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Resolution Note:
Unity's URP parallax-mapping implementation is quite simple so it can be run on low-end devices efficiently. Sadly, these artifacts are a limitation of this implementation, which we can't rework for this bug report.
As a mitigation, you can try the following strategies:
- Increase the vertex density of the mesh you're using the height map on (since the issue is related to computing the direction of the displacement per vertex, and then interpolating).
- Increase the tiling of your height map (the smaller the pixel/texel ratio is, the less visible this issue will be).
- Keep the camera at a minimum distance from these objects (since the distortion happens when the height map is sampled close to the camera).