iOS GPU hang/crash on devices with A7 and A8 chipsets
We're seeing a crash the second time we run our app. This is the error in the log:
Googling "IOAF code 3" I found this page: https://forums.developer.apple.com/thread/24702
It basically says that the hang/crash is caused by the threadgroup_barrier function not being encountered by all threads in the thread group.
I found the code in the engine that puts this function into the Metal shader and there was this comment above the code (MetalBackend.cpp line 1901):
Any chance this has been "fixed properly" yet?
This issue has already been reported as: UE-30847. It's a priority 2, major bug and it's on our to do list. Please feel free to ask for updates as various versions of the engine come out.
answered Jun 03 '16 at 07:34 PM
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