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Won't Fix

Votes

0

Found in

6000.0.24f1

6000.1.0a7

6000.3.0a1

6000.4.0a1

Issue ID

UUM-84879

Regression

No

Constant buffer is not properly updated for the depth pass when rendering a custom mesh with graphics jobs

-

Reproduction steps:
1. Open the attached “repro_IN-85432“ project (Update: Start the editor with the {{force-graphics-jobs legacy}} command line argument)
2. Open the “Assets/Scenes/SampleScene.unity“ Scene
3. Enter the Play Mode
4. Observe the “Cube“ GameObject

Expected result: The constant buffer is properly updated for the depth pass, resulting in correct shadows on the cube
Actual result: The constant buffer is not properly updated for the depth pass, causing incorrect shadows on the cube

Reproducible with: 2023.3.0a11, 6000.0.24f1
Not reproducible with: -2021.3.45f1, 2022.3.51f1, 2023.3.0a10- (Update: Haven't found a version that supports graphics jobs and doesn't reproduce.)

Reproducible on: Windows 10 (22H2)
Not reproducible on: No other environments tested

Notes:

  • -Not reproducible with DirectX11- (Update: Reproduces on DX11, DX12, Vulkan, and OpenGL at least)
  • Reproducible in Player
  • Enabling the “Frame Debugger“ (“Window → Analysis → Frame Debugger“) while in Play Mode seems to force the constant buffer to update properly and fixes the issue
  • User debugged this with The “RenderDoc“ application and found that “unity_LightShadowBias” is most likely the culprit
  1. Resolution Note:

    Thank you for reporting a bug to Unity.

    We have reviewed the issue carefully, and in this case, the team is unable to prioritize fixing this bug. There are a number of reasons we make this decision, including the impact and severity of the issue across our user and customer base, and the possibility that future plans may solve the problem in a different way, or that a workaround for the bug may be available.

    Today we will be closing this case. Thank you again for taking the time to report this issue, and please let us know if there is anything else that changes the impact or severity of this issue.

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