Editor session crashes applying Built Lighting in a level containing Static Foliage.
Note: this crash does not occur if the Instanced Foliage Mesh has mobility set to "Movable" within the Foliage Details in the Modes Panel.
This issue is first observed in UE4/Main beginning with Dev-Editor's integration at CL 3499771.
It is therefore marked as a Regression
Result:
Editor crashes with a D3D error callstack:
Unknown RHI vertex element type 0
Frequency:
5/5
Fatal error: [File:D:\Engine\UE4-Main\Engine\Source\Runtime\Windows\D3D11RHI\Private\D3D11VertexDeclaration.cpp] [Line: 49] Unknown RHI vertex element type 0 UE4Editor_Core!FDebug::AssertFailed() [d:\engine\ue4-main\engine\source\runtime\core\private\misc\assertionmacros.cpp:349] UE4Editor_D3D11RHI!FD3D11VertexDeclarationKey::FD3D11VertexDeclarationKey() [d:\engine\ue4-main\engine\source\runtime\windows\d3d11rhi\private\d3d11vertexdeclaration.cpp:53] UE4Editor_D3D11RHI!FD3D11DynamicRHI::RHICreateVertexDeclaration() [d:\engine\ue4-main\engine\source\runtime\windows\d3d11rhi\private\d3d11vertexdeclaration.cpp:97] UE4Editor_RHI!FDynamicRHI::CreateVertexDeclaration_RenderThread() [d:\engine\ue4-main\engine\source\runtime\rhi\private\rhicommandlist.cpp:1961] UE4Editor_RHI!FRHICommandListImmediate::CreateVertexDeclaration() [d:\engine\ue4-main\engine\source\runtime\rhi\public\rhicommandlist.h:2782] UE4Editor_ShaderCore!RHICreateVertexDeclaration() [d:\engine\ue4-main\engine\source\runtime\rhi\public\rhicommandlist.h:3599] UE4Editor_ShaderCore!FVertexFactory::InitDeclaration() [d:\engine\ue4-main\engine\source\runtime\shadercore\private\vertexfactory.cpp:294] UE4Editor_Engine!FInstancedStaticMeshVertexFactory::InitRHI() [d:\engine\ue4-main\engine\source\runtime\engine\private\instancedstaticmesh.cpp:449] UE4Editor_RenderCore!FRenderResource::InitResource() [d:\engine\ue4-main\engine\source\runtime\rendercore\private\renderresource.cpp:33] UE4Editor_RenderCore!TGraphTask<`BeginInitResource'::`2'::EURCMacro_InitCommand>::ExecuteTask() [d:\engine\ue4-main\engine\source\runtime\core\public\async\taskgraphinterfaces.h:784] UE4Editor_Core!FNamedTaskThread::ProcessTasksNamedThread() [d:\engine\ue4-main\engine\source\runtime\core\private\async\taskgraph.cpp:650] UE4Editor_Core!FNamedTaskThread::ProcessTasksUntilQuit() [d:\engine\ue4-main\engine\source\runtime\core\private\async\taskgraph.cpp:559] UE4Editor_RenderCore!RenderingThreadMain() [d:\engine\ue4-main\engine\source\runtime\rendercore\private\renderingthread.cpp:328] UE4Editor_RenderCore!FRenderingThread::Run() [d:\engine\ue4-main\engine\source\runtime\rendercore\private\renderingthread.cpp:462] UE4Editor_Core!FRunnableThreadWin::Run() [d:\engine\ue4-main\engine\source\runtime\core\private\windows\windowsrunnablethread.cpp:76]
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-46263 in the post.
| 1 |
| Component | UE - World Creation - Worldbuilding Tools - Foliage |
|---|---|
| Affects Versions | 4.17 |
| Target Fix | 4.17 |
| Created | Jun 20, 2017 |
|---|---|
| Resolved | Jun 21, 2017 |
| Updated | Apr 27, 2018 |