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Found in [Package]
7.7.1
Issue ID
1356038
Regression
No
[HDRP] [XR SDK] HMD displays black flickering when volume bloom effect is used
Reproduction steps:
1. Open the attached project ("1356038_BloomB.zip")
2. Open the "ArcWiz" scene
3. Enter Play mode
4. Move the headset around while looking at the TV
Expected result: Game window and image in the HMD does not flicker
Actual result: Game window and image in the headset flickers (see "N1HvaR1aE5.mp4" video)
Reproducible with: HDRP 7.7.1, 10.5.1, 11.0.0, 12.0.0 (2019.4.29f1, 2020.3.17f1, 2021.1.18f1, 2021.2.0b7, 2022.1.0a6)
Note:
- The same type of flickering also appears in the scene view (see "bloom.mp4" video)
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Resolution Note:
Scenes with complex lighting setup and multiple post processing effects can sometimes generates NaN values in the framebuffer and get amplified by the bloom effect, resulting in black/white screen.
In order to workaround this problem, you should enable the setting "Stop NaNs" on the camera.
See https://docs.unity.cn/Packages/com.unity.render-pipelines.high-definition@7.5/manual/Post-Processing-Propagating-NaNs.html for more information.