One Viewport becomes not visible in the Game view when changing the Viewport Rect values

Unity: Universal RP

As Designed

2021.3.X

2020.3.X

You should not depend on Uninitialize functionality as it also depends on platform (etc. mobile tiled-gpu can request clear even if it uninitialized, in mobile its called "don't care") If you want to render two cameras on each other, use camera stacking feature for it.

How to reproduce:

1. Open the user-attached “URPSampleScene.zip“ project from Google Drive
2. In the Hierarchy select “Main Camera“ object
3. In the Inspector, change the X or Y values in the Viewport Rect setting
4. Observe how the camera display behaves in the Game view window

Expected result: Both viewports from the cameras are visible in the Game view.
Actual result: Only one camera’s viewport is visible when changing the X or Y values.

Reproducible with: 2020.3.40f1, 2021.3.11f1
Could not reproduce with: 2022.1.19f1, 2022.2.0b10, 2023.1.0a13 (Only one camera’s viewport could be seen in the Game view)

Reproducible on: macOS 11.6.5 (Intel)

Note: A video illustrating the issue is attached

One Viewport becomes not visible in the Game view when changing the Viewport Rect values

Unity: Universal RP

As Designed

Prioritise and Follow this issue

Have a workaround or additional info about this issue?

One Viewport becomes not visible in the Game view when changing the Viewport Rect values

Unity: Universal RP

Statuses

As Designed

Resolution Notes

2021.3.XAs DesignedYou should not depend on Uninitialize functionality as it also depends on platform (etc. mobile tiled-gpu can request clear even if it uninitialized, in mobile its called "don't care") If you want to render two cameras on each other, use camera stacking feature for it.

Description

Prioritise and Follow this issue

Have a workaround or additional info about this issue?