Unity Issue Tracker - [HDRP] Noisy top shadows when using 'High' Filtering Quality with Tesselated Meshes (Lit Tesselation)

Fixed in 2021.3.9f1

Fixed in 2021.3.X, 2022.1.X, 2022.2.X, 2023.1.X, 2023.1.0a2

Votes

0

Found in

2021.3.5f1

2022.1.4f1

2022.1.5f1

2023.1.0a1

Issue ID

UUM-3341

Regression

No

[HDRP] Noisy top shadows when using 'High' Filtering Quality with Tesselated Meshes (Lit Tesselation)

HD RP

-

Jun 03, 2022

Reproduction steps:
1. Open the user's attached project "tessTest.zip"
2. Through Scene view look at shadows of "Plane", "Plane (1)", or "Plane (2)" (make sure you are viewing it from the front)

Expected result: All shadows are more or less solid (just like in real life)
Actual result: Top shadows are grainy/noisy

Reproducible with: 12.1.1 (2021.2.4f1), 13.1.7 (2022.1.0b11), 14.0.0 (2022.2.0a7)
Could not test with: 7.7.1 (2019.4.36f1), 10.8.1 (2020.3.31f1), 11.0.0 (2021.1.28f1), 12.1.0 (2021.2.0f1) (Broken textures when downgrading/remaking project)

Workaround - Setting "HDRP High Fidelity.asset" (in Assets > Settings) Filtering Quality (in Lighting > Shadows) to Low or Medium