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Fixed in 2020.2.X

Fixed in 2019.4.X, 2020.1.X



Found in


Issue ID




AsyncGPUReadback can leak memory under certain circumstances.

Graphics - LowLevel


If you first read back into a native array, then do a normal readback, the normal readback can leak memory, if it reuses the request that was used by the native array.

Reproduction steps:
1. Create or open any unity Project
2. Add the attached C# script to the project
3. Add it to an object in a scene with just a camera
4. Enter Play Mode
5.a Monitor Memory usage in the Task manager or
5.b open Window/Analysis/Profiler and add the Memory Module

Expected: Memory usage rises up to a point and stabilizes there
Actual: Memory usage keeps rising

Reproduces in 2019.4.2f1, 2020.1.0b12, 2020.2.0a16
Does not Reproduce in 2019.2.0f1

  1. Resolution Note (fix version 2020.2):

    Fixed in: 2020.2.0a20

  2. Resolution Note (fix version 2020.1):

    Fixed in: 2020.1.2f1

  3. Resolution Note (fix version 2019.4):

    Fixed in: 2019.4.8f1

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