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Fixed in 2019.3

Fixed in 2018.4

Votes

0

Found in

2017.4.0f1

2018.4.0f1

2018.4.1f1

2019.1.0a1

2019.2.0a1

2019.3.0a1

Issue ID

1174524

Regression

No

Subtractive Mixed Lighting used with a Static Shadows Only Object changes when reloading the Scene or entering Play Mode

Shadows/Lights

-

How to reproduce:
1. Open user-submitted project (SubtractiveStaticShadowOccluder)
2. Open the SampleScene
3. Open the Lighting Settings window and generate lighting
4. Enter Play Mode or save, switch to another scene and switch back
5. See the Scene view

Expected result: the lighting has not changed after entering Play Mode or reloading the Scene; static shadow occluder throws a grey shadow
Actual result: the lighting has changed after entering Play Mode or reloading the scene; static shadow occluder throws a red shadow

Reproducible with: 2017.4.31f1, 2018.4.6f1, 2019.1.14f1, 2019.2.1f1, 2019.3.0a12

Notes:
- Reproduces even if the occluder is set as a SSD which receives GI from light probes
- The issue only happens if the 'Scale In Lightmap' value of the shadow occluder's object is 0
- The issue only happens if the 'Auto Generate' checkbox in the lighting settings is unchecked
- Workaround: set the 'Scale in Lightmap' value of the shadow occluder to a minuscule value(e.g. 0.0001)

  1. Response avatar

    Resolution Note (fix version 2019.3):

    SSDs were not written into the Lighting Data Asset, because they are not "baked". However, they influence GI, so they must be marked as such when evaluating shadow casters. This information was ignored, because the Lighting Data Asset is responsible for recreating the state when reloading the scene in the Editor.

    Fixed in 2020.1.0a14

  2. Response avatar

    Resolution Note (fix version 2018.4):

    Fixed in 2018.4.18f1

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