The editor crashes when entering Kanji characters into TextRenderActor with raytrace enabled. This does not happen with English text.
1. Enable Raytracing in Project Settings
2. Create offline font for Japanese characters
3. Place TextRenderActor on the level
4. Replace the font with the asset created in Step2
5. Type (or copy/paste) “一二三四五” in Text into TextRenderActor
Result:
Crash editor
Expected:
No crash editor
LoginId:a28409704427cc781fafa5b458893007 EpicAccountId:fb567da00f03436dabdb32db92746435Assertion failed: RayTracingInstance.Geometry->Initializer.Segments.Num() == CachedRayTracingMaterials.Num() [File:C:\EPIC\Github\UnrealEngine\Engine\Source\Runtime\Engine\Private\Components\TextRenderComponent.cpp] [Line: 962] Segments/Materials mismatch. Number of segments: 1. Number of Materials: 2. KERNELBASE UnrealEditor_Core!ReportAssert() [C:\EPIC\Github\UnrealEngine\Engine\Source\Runtime\Core\Private\Windows\WindowsPlatformCrashContext.cpp:1826] UnrealEditor_Core!FWindowsErrorOutputDevice::Serialize() [C:\EPIC\Github\UnrealEngine\Engine\Source\Runtime\Core\Private\Windows\WindowsErrorOutputDevice.cpp:84] UnrealEditor_Core!FOutputDevice::LogfImpl() [C:\EPIC\Github\UnrealEngine\Engine\Source\Runtime\Core\Private\Misc\OutputDevice.cpp:70] UnrealEditor_Core!AssertFailedImplV() [C:\EPIC\Github\UnrealEngine\Engine\Source\Runtime\Core\Private\Misc\AssertionMacros.cpp:148] UnrealEditor_Core!FDebug::CheckVerifyFailedImpl2() [C:\EPIC\Github\UnrealEngine\Engine\Source\Runtime\Core\Private\Misc\AssertionMacros.cpp:649] UnrealEditor_Engine!FTextRenderSceneProxy::GetDynamicRayTracingInstances() [C:\EPIC\Github\UnrealEngine\Engine\Source\Runtime\Engine\Private\Components\TextRenderComponent.cpp:960] UnrealEditor_Renderer!RayTracing::GatherWorldInstancesForView() [C:\EPIC\Github\UnrealEngine\Engine\Source\Runtime\Renderer\Private\RayTracing\RayTracing.cpp:826] UnrealEditor_Renderer!FDeferredShadingSceneRenderer::Render() [C:\EPIC\Github\UnrealEngine\Engine\Source\Runtime\Renderer\Private\DeferredShadingRenderer.cpp:1898] UnrealEditor_Renderer!RenderViewFamilies_RenderThread() [C:\EPIC\Github\UnrealEngine\Engine\Source\Runtime\Renderer\Private\SceneRendering.cpp:4833] UnrealEditor_Renderer!`FRendererModule::BeginRenderingViewFamilies'::`89'::<lambda_3>::operator()() [C:\EPIC\Github\UnrealEngine\Engine\Source\Runtime\Renderer\Private\SceneRendering.cpp:5122] UnrealEditor_RenderCore!`FRenderThreadCommandPipe::EnqueueAndLaunch'::`5'::<lambda_1>::operator()() [C:\EPIC\Github\UnrealEngine\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp:1751] UnrealEditor_RenderCore!TGraphTask<TFunctionGraphTaskImpl<void __cdecl(void),1> >::ExecuteTask() [C:\EPIC\Github\UnrealEngine\Engine\Source\Runtime\Core\Public\Async\TaskGraphInterfaces.h:1235] UnrealEditor_Core!FNamedTaskThread::ProcessTasksNamedThread() [C:\EPIC\Github\UnrealEngine\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:760] UnrealEditor_Core!FNamedTaskThread::ProcessTasksUntilQuit() [C:\EPIC\Github\UnrealEngine\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:651] UnrealEditor_RenderCore!RenderingThreadMain() [C:\EPIC\Github\UnrealEngine\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp:413] UnrealEditor_RenderCore!FRenderingThread::Run() [C:\EPIC\Github\UnrealEngine\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp:539] UnrealEditor_Core!FRunnableThreadWin::Run() [C:\EPIC\Github\UnrealEngine\Engine\Source\Runtime\Core\Private\Windows\WindowsRunnableThread.cpp:149]
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-213275 in the post.
| 0 |
| Component | UE - Graphics Features - Ray Tracing |
|---|---|
| Affects Versions | 5.4 |
| Target Fix | 5.4.2 |
| Fix Commit | 33459026 |
|---|
| Created | Apr 25, 2024 |
|---|---|
| Resolved | May 6, 2024 |
| Updated | May 17, 2024 |