Unreal Engine Issues

UE-169447

Landscapes cause Vulkan crash related to GRHISupportsAttachmentVariableRateShading

Landscapes cause Vulkan crash related to GRHISupportsAttachmentVariableRateShading

Description

Binary (Installed Build)//UE5/Release-5.1 @CL22986940

I encountered this same crash when creating a landscape twice, but was not able to consistently reproduce it with those steps. I figured out that I could get this crash to occur much more frequently (5/6 repro rate) with the steps listed above.

Regression tested against Binary (Installed Build)//UE5/Release-5.0 @CL20979098 where the issue does not occur. Marked regression as Yes.

Steps to Reproduce
  1. Open any project and create a new default level template.
  2. Hit Shift+2 to open the landscape editor and create a landscape with Default settings.
  3. Hit Shift+1 to change back to Selection Mode, select the landscape actor, and navigate to the Details panel.
  4. Search for Max LODLevel and change the value to more than 0. I used 3.

Expected Result: Value of the Max LODLevel is changed without issue.
Actual Result: Editor crashes after the value change.

Callstack
libUnrealEditor-VulkanRHI!7f8be4436000  + 1f2346
libUnrealEditor-VulkanRHI!7f8be4436000  + 1f65f9
libUnrealEditor-VulkanRHI!7f8be4436000  + 1f3d09
libUnrealEditor-VulkanRHI!7f8be4436000  + 20d8ac
libUnrealEditor-Landscape!FLandscapeTexture2DArrayResource::InitRHI() [LandscapeEditResources.cpp:122]
libUnrealEditor-RenderCore!7f8c9da21000  + 28f69c
libUnrealEditor-RenderCore!7f8c9da21000  + 2bcde1
libUnrealEditor-RenderCore!7f8c9da21000  + 2bd236
libUnrealEditor-Core!FNamedTaskThread::ProcessTasksNamedThread(int, bool) [TaskGraph.cpp:760]
libUnrealEditor-Core!FNamedTaskThread::ProcessTasksUntilQuit(int) [TaskGraph.cpp:649]
libUnrealEditor-Core!FTaskGraphCompatibilityImplementation::ProcessThreadUntilRequestReturn(ENamedThreads::Type) [TaskGraph.cpp:2150]
libUnrealEditor-RenderCore!7f8c9da21000  + 28882c
libUnrealEditor-RenderCore!7f8c9da21000  + 2d42a4
libUnrealEditor-Core!FRunnableThreadPThread::Run() [PThreadRunnableThread.cpp:25]
libUnrealEditor-Core!FRunnableThreadPThread::_ThreadProc(void*) [PThreadRunnableThread.h:186]
libpthread.so!7f8ca5095000  + 8609
libc.so!7f8c99549000  + 11f133

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Cannot Reproduce
ComponentUE - Rendering Architecture - RHI
Affects Versions5.1
Target Fix5.4
CreatedNov 7, 2022
ResolvedFeb 13, 2024
UpdatedMar 1, 2024
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