Crash on screen rotation with PowerVR GE8320

Development Rendering
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1

Hello,

We are experiencing a crash on devices with the PowerVR GE8320 GPU when the screen is rotated during gameplay.

The crash occurs in glBlitFramebuffer()

The issue has been confirmed on the following devices:

  • Realme C2 (RMX1941) – Android 9, OpenGL ES 3.2 build 1.10@5130912
  • Oppo A78 (CPH2483) – Android 12, OpenGL ES 3.2 build 1.10@5130912

This crash does not occur on other devices. Could you provide assistance with this?

We have attached the Log.txt and adb logcat logs from the Realme C2.

Thanks.

2

Reproduction Steps

  1. Install 5.5.4 Engine
  2. Create ThirdPerson template c++ project
  3. Setup Project
    1. Project Settings - Android - Configure Now
    2. Package data inside .apk -> true
    3. bSupportVulkan -> false
  4. Package Game : Android - Development
  5. Install the app to PowerVR GE8320 device
  6. Run
  7. After CI, Change screen orientation (rotate phone)
  8. Crash
3

Hi SeongbeomJeong,

I can’t tell from the log but is this a Portrait <-> Landscape autorotation? Does it also occur in Landscape -> Upside down Landscape?

Best regards.

4

Hi SeongbeomJeong,

It appears the Galaxy A12 runs a later version of the Imagination GPU driver driver (1.13[Content removed] would disabling autorotation for the device family / GPU version be a viable workaround?

Best regards.

5

Yes. It seems to be a GPU driver bug.

And We also think it by good workaround disabling autorotation at specific PowerVR OpenGL driver version.

However, is there other workaround to prevent the crash?

Thanks.

6

Hi SeongbeomJeong,

You could altenatively try to disable bAndroidOpenGLSupportsBackbufferSampling which would circumvent the BlitFrameBuffer path altogether but have performance implications.

Best regards.

7

Hi. thanks for your reply.

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It occurs in Landscape -> Upside down Landscape.

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And we also found is that the issue does not occur on this device has same gpu.

* Galaxy A12 (GE8320) - Android 11, OpenGL ES 3.2 build 1.13@5776728

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