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When attempting to set "Double Sided" for multiple materials in the property matrix, the editor crashes

Reprod:

Select 2-5 or more materials in your content browser. With the items selected, open their property matrix and tick "Double Sided". The editor will hang for a couple of seconds, then crash.

UE4 Version: 4.4.0-2255576+++depot+UE4-Releases+4.4 (Binary from the launcher) System: Windows 7 x64

Product Version: Not Selected
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asked Aug 17 '14 at 05:18 PM in Bug Reports

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Jargon
808 39 30 66

avatar image Lovecraft_K ♦♦ STAFF Aug 18 '14 at 02:59 PM

Hey Jargon -

Thank you for your report. I will begin investigation into this issue as soon as possible. If I am unable to reproduce the problem, or I need more information, I or another staff member will follow up with some additional questions for you. Otherwise, I will post an ‘Answer’ once I have logged the issue in our bug database or we have a solution for it.

In the meantime, please be sure to review our suggestions for how to report a bug, and feel free to edit your post if you have additional information to provide: https://answers.unrealengine.com/questions/12363/how-do-i-report-a-bug.html

Thank you.

Eric Ketchum

avatar image LestatDeLioncourt May 23 '18 at 03:06 PM

Sorry for thread necromancy, but I get the exact same error in 4.17...

I change a material property during runtime from c++ (making the water shader twosided once the camera is under water)...

It never crashes during gameplay, always if you start a new play in editor and at some random point

Here is the call stack from the crash (shortend to fit in a post):

Fatal error: [File:D:\Build\++UE4+Release-4.17+Compile\Sync\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp] [Line: 811] Rendering thread exception: Fatal error: [File:D:\Build\++UE4+Release-4.17+Compile\Sync\Engine\Source\Runtime\Engine\Private\Materials\MaterialShared.cpp] [Line: 1867] Couldn't find Shader FHitProxyVS for Material Resource M_PondScum_Cheaper! RenderMeshShaderMap 1, RenderThreadShaderMap 1 GameMeshShaderMap 1, GameThreadShaderMap 1, bShaderWasFoundInGameShaderMap 0 With VF=FLocalVertexFactory, Platform=PCD3D_SM5 ShouldCache: Mat=1, VF=1, Shader=1 MaterialUsageDesc: LightingModel=MSM_DefaultLit, BlendMode=BLEND_Translucent, SpecialEngine=0, TwoSided=1, TSNormal=1, Masked=0, Distorted=0, WritesEveryPixel=1, ModifiesMeshPosition=0, Usage={bUsedWithStaticLighting}

KERNELBASE.dll!0x00000000FD77A06D UE4Editor-Core.dll!FOutputDeviceWindowsError::Serialize() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\windows\windowsplatformoutputdevices.cpp:120] UE4Editor-Core.dll!FOutputDevice::Logf__VA() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\misc\outputdevice.cpp:70] UE4Editor-Core.dll!FDebug::AssertFailed() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:349] UE4Editor-Engine.dll!FMaterial::GetShader() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\engine\private\materials\materialshared.cpp:1854]

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1 answer: sort voted first

Hey Jargon -

I was able to track down a reproduction for this bug and have entered a report with our developers (TTP# 344123).

Thank You for your help in identifying this issue.

Eric Ketchum

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answered Aug 18 '14 at 05:37 PM

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Lovecraft_K ♦♦ STAFF
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avatar image LestatDeLioncourt May 23 '18 at 03:08 PM

Sorry for thread necromancy, but I get the exact same error in 4.17...

I change a material property during runtime from c++ (making the water shader twosided once the camera is under water)...

It never crashes during gameplay, always if you start a new play in editor and at some random point

Here is the call stack from the crash (shorter version):

Fatal error: [File:D:\Build\++UE4+Release-4.17+Compile\Sync\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp] [Line: 811] Rendering thread exception: Fatal error: [File:D:\Build\++UE4+Release-4.17+Compile\Sync\Engine\Source\Runtime\Engine\Private\Materials\MaterialShared.cpp] [Line: 1867] Couldn't find Shader FHitProxyVS for Material Resource M_PondScum_Cheaper! RenderMeshShaderMap 1, RenderThreadShaderMap 1 GameMeshShaderMap 1, GameThreadShaderMap 1, bShaderWasFoundInGameShaderMap 0 With VF=FLocalVertexFactory, Platform=PCD3D_SM5 ShouldCache: Mat=1, VF=1, Shader=1 MaterialUsageDesc: LightingModel=MSM_DefaultLit, BlendMode=BLEND_Translucent, SpecialEngine=0, TwoSided=1, TSNormal=1, Masked=0, Distorted=0, WritesEveryPixel=1, ModifiesMeshPosition=0, Usage={bUsedWithStaticLighting}

KERNELBASE.dll!0x00000000FD77A06D UE4Editor-Core.dll!FOutputDeviceWindowsError::Serialize() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\windows\windowsplatformoutputdevices.cpp:120] UE4Editor-Core.dll!FOutputDevice::Logf__VA() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\misc\outputdevice.cpp:70] UE4Editor-Core.dll!FDebug::AssertFailed() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:349] UE4Editor-Engine.dll!FMaterial::GetShader() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\engine\private\materials\materialshared.cpp:1854]

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