Description

This ensure has occurred with some frequency in the 4.14 and 4.15 releases, and has been reported in the linked UDN post.

Though this Jira links to one specific CrashGroup in CrashReporter, there are actually many more one-offs with slightly different callstacks.

Steps to Reproduce

Repro steps unknown

Callstack
Ensure condition failed: !GSkinCacheSafety || CacheInfo.BaseVertexIndex == BaseVertexIndex [File:C:\Depot\r4\game\Engine\Source\Runtime\Engine\Private\GPUSkinCache.cpp] [Line: 673] SkinCache internal error (Debug: 00000000A1F75980 162 162 5815 0 cloth:0)

UE4Editor_Engine!FGPUSkinCache::InternalSetVertexStreamFromCache() [gpuskincache.cpp:669]
UE4Editor_Engine!FGPUSkinVertexPassthroughFactoryShaderParameters::SetMesh() [gpuskinvertexfactory.cpp:642]
UE4Editor_Renderer!FMeshMaterialShader::SetMesh<FRHIVertexShader * __ptr64>() [shaderbaseclasses.cpp:455]
UE4Editor_Renderer!FDepthDrawingPolicy::SetMeshRenderState() [depthrendering.cpp:460]
UE4Editor_Renderer!FDepthDrawingPolicyFactory::DrawMesh() [depthrendering.cpp:805]
UE4Editor_Renderer!FDeferredShadingSceneRenderer::RenderPrePassViewDynamic() [depthrendering.cpp:916]
UE4Editor_Renderer!FDeferredShadingSceneRenderer::RenderPrePassView() [depthrendering.cpp:1041]
UE4Editor_Renderer!FDeferredShadingSceneRenderer::RenderPrePass() [depthrendering.cpp:1330]
UE4Editor_Renderer!FDeferredShadingSceneRenderer::Render() [deferredshadingrenderer.cpp:774]
UE4Editor_Renderer!RenderViewFamily_RenderThread() [scenerendering.cpp:1731]
UE4Editor_Renderer!TGraphTask<`FRendererModule::BeginRenderingViewFamily'::`21'::EURCMacro_FDrawSceneCommand>::ExecuteTask() [taskgraphinterfaces.h:883]
UE4Editor_Core!FNamedTaskThread::ProcessTasksNamedThread() [taskgraph.cpp:956]
UE4Editor_Core!FNamedTaskThread::ProcessTasksUntilQuit() [taskgraph.cpp:703]
UE4Editor_RenderCore!RenderingThreadMain() [renderingthread.cpp:328]
UE4Editor_RenderCore!FRenderingThread::Run() [renderingthread.cpp:470]
UE4Editor_Core!FRunnableThreadWin::Run() [windowsrunnablethread.cpp:76]

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Fixed
ComponentRendering
Affects Versions4.144.15
Target Fix4.16
Fix Commit3384933
Main Commit3388266
Release Commit3390270
CreatedApr 12, 2017
ResolvedApr 13, 2017
UpdatedApr 27, 2018