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Won't Fix

Votes

1

Found in [Package]

11.0.0

Issue ID

1378310

Regression

No

Clouds do not render in URP when VR with Render Mode set to Single Pass Instanced is enabled

Package: Scriptable Render Pipeline Universal

-

Reproduction steps:
1. Open the user's attached "WeatherMaker_LatestUnity.zip" project
2. Open the "DemoSceneURP" Scene
3. Enter the Play mode
4. Click on the dropdown menu in the left upper corner of the Scene and select "Heavy (Dark)"

Expected result: The blue parts in the Scene get filled with dark clouds
Actual result: The blue parts in the Scene stay the same

Reproducible with: 10.7.0 (2020.3.22f1), 11.0.0 (2021.1.28f1)
Could not test with: 7.7.1 (2019.4.32f1) (Multiple console errors, corrupted Scene), 12.1.1 (2021.2.2f1), 13.0.0 (2022.1.0a15) (Scene is black, missing Prefabs)

Notes:
- The shader used for rendering clouds is "WeatherMakerFullScreenCloudsShader.shader"

  1. Resolution Note:

    The script executes an already built command buffer on SRP context. The commandbuffer recorded cmd.Blit which does not work with URP XR integration. cmd.Blit disables several XR shader keyword internally which is required for URP XR rendering.

    To do full pass in URP, we have an documentation here showing the example: https://docs.unity3d.com/Packages/com.unity.render-pipelines.universal@12.1/manual/renderer-features/how-to-fullscreen-blit-in-xr-spi.html

    The script tries to run same command buffer on both URP and BIRP. This approach is not recommended and may run into more compatibility issue in the future when URP diverges further from BIRP.

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