Unreal Engine Issues

UE-90643

Enabling Anisotropic BRDF causes crash upon Editor restart

Enabling Anisotropic BRDF causes crash upon Editor restart

Description

Enabling the Anisotropic BRDF (beta) causes crash upon restarting the Editor.

This was reported and tested in 4.25 Preview 2 (CL-12055273). This was reproduced in main 4.26 (CL-12161634).

Steps to Reproduce
  1. Open the UE4 Editor and create a Blank project
  2. Go to Project Settings>Rendering and search for Anisotropic BRDF and enable it
  3. Restart the Editor

Results: The Editor crashes while it loads up

Expected: The Editor doesn't crash

Callstack
[2020.03.13-17.43.59:152][  0]LogWindows: Error: === Critical error: ===
[2020.03.13-17.43.59:152][  0]LogWindows: Error: 
[2020.03.13-17.43.59:152][  0]LogWindows: Error: Fatal error: [File:D:/Build/++UE4+Licensee/Sync/Engine/Source/Runtime/Engine/Private/ShaderCompiler/ShaderCompiler.cpp] [Line: 4952] 
[2020.03.13-17.43.59:152][  0]LogWindows: Error: Failed to compile global shader FGenerateReflectionRaysCS  .  Enable 'r.ShaderDevelopmentMode' in ConsoleVariables.ini for retries.
[2020.03.13-17.43.59:152][  0]LogWindows: Error: 
[2020.03.13-17.43.59:152][  0]LogWindows: Error: 
[2020.03.13-17.43.59:152][  0]LogWindows: Error: [Callstack] 0x00007ff9d81c9159 KERNELBASE.dll!UnknownFunction []
[2020.03.13-17.43.59:152][  0]LogWindows: Error: [Callstack] 0x00007ff982de1106 UE4Editor-Core.dll!ReportAssert() [D:\Build\++UE4+Licensee\Sync\Engine\Source\Runtime\Core\Private\Windows\WindowsPlatformCrashContext.cpp:1388]
[2020.03.13-17.43.59:152][  0]LogWindows: Error: [Callstack] 0x00007ff982de4758 UE4Editor-Core.dll!FWindowsErrorOutputDevice::Serialize() [D:\Build\++UE4+Licensee\Sync\Engine\Source\Runtime\Core\Private\Windows\WindowsErrorOutputDevice.cpp:78]
[2020.03.13-17.43.59:152][  0]LogWindows: Error: [Callstack] 0x00007ff982b6f5bd UE4Editor-Core.dll!FOutputDevice::LogfImpl() [D:\Build\++UE4+Licensee\Sync\Engine\Source\Runtime\Core\Private\Misc\OutputDevice.cpp:61]
[2020.03.13-17.43.59:152][  0]LogWindows: Error: [Callstack] 0x00007ff980a912a6 UE4Editor-Engine.dll!ProcessCompiledGlobalShaders() [D:\Build\++UE4+Licensee\Sync\Engine\Source\Runtime\Engine\Private\ShaderCompiler\ShaderCompiler.cpp:4972]
[2020.03.13-17.43.59:152][  0]LogWindows: Error: [Callstack] 0x00007ff980a93017 UE4Editor-Engine.dll!FShaderCompilingManager::ProcessCompiledShaderMaps() [D:\Build\++UE4+Licensee\Sync\Engine\Source\Runtime\Engine\Private\ShaderCompiler\ShaderCompiler.cpp:2454]
[2020.03.13-17.43.59:152][  0]LogWindows: Error: [Callstack] 0x00007ff980a75f04 UE4Editor-Engine.dll!FShaderCompilingManager::FinishCompilation() [D:\Build\++UE4+Licensee\Sync\Engine\Source\Runtime\Engine\Private\ShaderCompiler\ShaderCompiler.cpp:2846]
[2020.03.13-17.43.59:152][  0]LogWindows: Error: [Callstack] 0x00007ff959bb0b9e UE4Editor-D3D11RHI.dll!FD3D11DynamicRHI::PostInit() [D:\Build\++UE4+Licensee\Sync\Engine\Source\Runtime\Windows\D3D11RHI\Private\Windows\WindowsD3D11Device.cpp:1047]
[2020.03.13-17.43.59:152][  0]LogWindows: Error: [Callstack] 0x00007ff625db28a9 UE4Editor.exe!FEngineLoop::PreInitPostStartupScreen() [D:\Build\++UE4+Licensee\Sync\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:3105]
[2020.03.13-17.43.59:152][  0]LogWindows: Error: [Callstack] 0x00007ff625dabdcc UE4Editor.exe!GuardedMain() [D:\Build\++UE4+Licensee\Sync\Engine\Source\Runtime\Launch\Private\Launch.cpp:127]
[2020.03.13-17.43.59:152][  0]LogWindows: Error: [Callstack] 0x00007ff625dac13a UE4Editor.exe!GuardedMainWrapper() [D:\Build\++UE4+Licensee\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:137]
[2020.03.13-17.43.59:152][  0]LogWindows: Error: [Callstack] 0x00007ff625dbe959 UE4Editor.exe!WinMain() [D:\Build\++UE4+Licensee\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:266]
[2020.03.13-17.43.59:152][  0]LogWindows: Error: [Callstack] 0x00007ff625dc1a3a UE4Editor.exe!__scrt_common_main_seh() [d:\agent\_work\5\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
[2020.03.13-17.43.59:152][  0]LogWindows: Error: [Callstack] 0x00007ff9dbae7974 KERNEL32.DLL!UnknownFunction []
[2020.03.13-17.43.59:152][  0]LogWindows: Error: [Callstack] 0x00007ff9dbd5a261 ntdll.dll!UnknownFunction []

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Fixed
ComponentUE - Graphics Features - Lumen
Affects Versions4.25, 4.26
Target Fix4.25
Fix Commit12169355
Main Commit12195329
Release Commit12169355
CreatedMar 13, 2020
ResolvedMar 16, 2020
UpdatedSep 19, 2021
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