Description

Licensee has provided a potential fix, please see the UDN link. Callstack attached utilised -onethread

Steps to Reproduce

Open Lyra

Find M_UI_Base_BordersAndButtons and open it's material editor window

Go to Window->Platform Stats, the assert should occur immediately.

Callstack
Assertion failed: ShaderTypeForDynamicCast == EShaderTypeForDynamicCast::MeshMaterial [File:D:\Unreal\UE5_Main\Engine\Source\Runtime\RenderCore\Public\Shader.h] [Line: 1216] 
ShaderType TSlateMaterialShaderPSDefault is not MeshMaterial
A breakpoint instruction (__debugbreak() statement or a similar call) was executed in UnrealEditor-Win64-Debug.exe.

UnrealEditor-Engine-Win64-Debug.dll!FMaterial::CacheGivenTypes(EShaderPlatform Platform, const TArray<FVertexFactoryType const *,TSizedDefaultAllocator<32>> & VFTypes, const TArray<FShaderPipelineType const *,TSizedDefaultAllocator<32>> & PipelineTypes, const TArray<FShaderType const *,TSizedDefaultAllocator<32>> & ShaderTypes) Line 2663	C++
UnrealEditor-MaterialEditor-Win64-Debug.dll!FShaderPlatformSettings::CheckShaders() Line 240	C++
UnrealEditor-MaterialEditor-Win64-Debug.dll!FShaderPlatformSettings::Update() Line 256	C++
UnrealEditor-MaterialEditor-Win64-Debug.dll!FMaterialStats::Update() Line 674	C++
UnrealEditor-MaterialEditor-Win64-Debug.dll!FMaterialEditor::UpdateMaterialInfoList() Line 3039	C++
UnrealEditor-MaterialEditor-Win64-Debug.dll!FMaterialEditor::Tick(float InDeltaTime) Line 1694	C++
UnrealEditor-Engine-Win64-Debug.dll!FTickableGameObject::TickObjects(UWorld * World, int InTickType, bool bIsPaused, float DeltaSeconds) Line 153	C++
UnrealEditor-UnrealEd-Win64-Debug.dll!UEditorEngine::Tick(float DeltaSeconds, bool bIdleMode) Line 1836	C++
UnrealEditor-UnrealEd-Win64-Debug.dll!UUnrealEdEngine::Tick(float DeltaSeconds, bool bIdleMode) Line 516	C++
UnrealEditor-LyraEditor-Win64-Debug.dll!ULyraEditorEngine::Tick(float DeltaSeconds, bool bIdleMode) Line 34	C++
UnrealEditor-Win64-Debug.exe!FEngineLoop::Tick() Line 5307	C++
UnrealEditor-Win64-Debug.exe!EngineTick() Line 63	C++
UnrealEditor-Win64-Debug.exe!GuardedMain(const wchar_t * CmdLine) Line 189	C++
UnrealEditor-Win64-Debug.exe!LaunchWindowsStartup(HINSTANCE__ * hInInstance, HINSTANCE__ * hPrevInstance, char * __formal, int nCmdShow, const wchar_t * CmdLine) Line 279	C++
UnrealEditor-Win64-Debug.exe!WinMain(HINSTANCE__ * hInInstance, HINSTANCE__ * hPrevInstance, char * pCmdLine, int nCmdShow) Line 337	C++
[External Code]	

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Fixed
ComponentUE - Rendering - Materials
Affects Versions5.1
Target Fix5.1
Fix Commit20762400
Main Commit20762400
CreatedJun 16, 2022
ResolvedJul 13, 2022
UpdatedAug 2, 2022