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Fixed in 12.0.0



Found in [Package]


Issue ID




[HDRP][DXR] Path Tracing renders distant Volumetric Fog pure black if Maximum Height Fog parameter is lower than Camera height

Package: Scriptable Render Pipeline HD


How to reproduce:
1. Open the attached project named "U -"
2. Open the "Bugreport scene"
3. Enter Play mode and observe the Game window

Expected results: Distant Volumetric fog is rendered in grey color
Actual results: Distant Volumetric Fog is rendered in solid black, forming a dark line on the horizon

Reproducible with: 2020.3.13f1(10.5.1), 2021.1.14f1(11.0.0), 2021.2.0b3(12.0.0), 2022.1.0a2(12.0.0)
Could not test with: 2018.4.35f1(Path Tracing was not available), 2019.4.29f1(HDRP 7.7.0 - Volumetric Fog does not seem to be rendered)

1. If Path Tracing or Volumetric Fog is disabled distant horizon fog is colored in grey.
2. If the Camera height is below the Fog's Maximum Height parameter value distant horizon fog is colored in grey.

  1. Resolution Note (fix version 12.0.0):

    Fixed in Unity 2022.1.0a12 and HDRP 12.0.0

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