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Postponed means that the issue was either a feature request or something that requires major refactoring on our side. Since that makes the issue not actionable in the close future we choose to close it as Postponed and add it on our internal roadmaps and technical debt pages instead.

Postponed

Votes

0

Found in [Package]

10.7.0

Issue ID

1392571

Regression

No

[HDRP] Realtime lights do not pass through transparent materials

Package: Scriptable Render Pipeline HD

-

Steps to reproduce:

1. Download and open the repro project (EnterTheRoom-HDRP-Stripped.zip)
2. Open scene EnterTheRoom-Scene01-Stripped
3. Select the Inner_Curtains GameObject
4. In the material properties (Curtains > Surface Inputs), begin modifying the Alpha channel value
5. Notice, that directional light still does not pass through

Notes:

- Observed in: 2020.3.25f1
- Affects all render pipelines (BiRP, URP, HDRP)
- Issue reproduces with all light types
- Does not reproduce with baked lighting when using fully baked lights

  1. Resolution Note:

    The user expectations was to see semitransparent shadows from the curtain. HDRP currently only supports opaque shadows, disabling shadows entirely for an object, or alpha clipped shadows ("Shadow Threshold") for transparent objects, and true semitransparent shadows is not currently supported.

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