Memory leaks when using the “CommandBuffer” to perform a series of render operations using temporary RenderTextures on iOS devices

Unity: Metal

As Designed

2023.3.X

2023.2.X

2022.3.X

2021.3.X

RenderTexture.GetTemporary allocates memory. Call ReleaseTemporary to release the memory. See https://docs.unity3d.com/ScriptReference/RenderTexture.GetTemporary.html for details

How to reproduce:
1. Build And Run the user’s attached “My project.zip” project on iOS device
2. In the app, press the “render” button a few times
3. Observe the memory usage in the Xcode’s Debug navigator

Expected result: After pressing 3 times, Memory usage increases a bit
Actual result: After pressing 3 times, Memory usage is 300-600MB

Reproducible with: 2021.3.32f1, 2022.3.14f1, 2023.2.2f1, 2023.3.0a16

Reproduced on:
VLNQA00494 - iPhone 14 Pro Max, 16.3.1 iOS
VLNQA00358 - iPhone 12, 14.1 iOS
VLNQA00392 - iPad (9th generation), 15.0 iOS
VLNQA00310 - iPad Pro 12.9", 13.4.1 iOS
Not reproducible on: No other environment tested

Memory leaks when using the “CommandBuffer” to perform a series of render operations using temporary RenderTextures on iOS devices

Unity: Metal

As Designed

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Have a workaround or additional info about this issue?

Memory leaks when using the “CommandBuffer” to perform a series of render operations using temporary RenderTextures on iOS devices

Unity: Metal

Statuses

As Designed

Resolution Notes

2023.3.XAs DesignedRenderTexture.GetTemporary allocates memory. Call ReleaseTemporary to release the memory. See https://docs.unity3d.com/ScriptReference/RenderTexture.GetTemporary.html for details

Description

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Have a workaround or additional info about this issue?