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Fixed in 2020.1.X

Votes

0

Found in

2019.2.0b10

2019.2.8f1

2019.3

2020.1

Issue ID

1188928

Regression

Yes

[SRP] Objects lit by multiple Spot lights sometimes have their _unityLightIndices[0] set to all zeroes

Graphics - General

-

How to reproduce:
1. Open the attached "LightIndicesBug.zip" project
2. Open scene "SampleScene"
3. Open Window > Analysis > Frame Debugger and click "Enable" in the opened window
4. In the Frame Debugger, select "Draw Mesh Cube (2)"
5. Inspect the "unity_LightIndices0[2]" shader property

Expected results: The unity_LightIndices matrix contains three different indices
Actual results: The unity_LightIndices matrix is set to all zeroes

Reproducible with: 2019.2.0b10, 2019.3.0b7, 2020.1.0a7
Not reproducible with: 2019.2.0b9

Note:
If the unity_LightIndices matrix is correct, try moving any of the cubes until you see some flicker in the scene and then use the Frame Debugger to confirm the issue

  1. Resolution Note (fix version 2020.1):

    Fixed in: 2020.1.0a8

Comments (1)

  1. fherbst

    Oct 22, 2019 12:57

    When will this be backported? 2019.3 is unusable with URP due to this bug!

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