Description

When using nullrhi, the Texture->Resource variable in UAsyncTaskDownloadImage::HandleImageRequest is null and a crash occurs in WriteRawToTexture_RenderThread.

Steps to Reproduce
  1. Open attached project on 4,25  [Link Removed]
  2. Press File>Package Project>Windows(64bit)
  3. Launch the game with "-nullrhi -log" command line option.

Result

The game crushes (see call stack)

Callstack
UE4Game.exe!FTexture2DDynamicResource::GetTexture2DRHI() Line 81	C++	Symbols loaded.
UE4Game.exe!WriteRawToTexture_RenderThread(FTexture2DDynamicResource * TextureResource, TArray<unsigned char,TSizedDefaultAllocator<64>> * RawData, bool bUseSRGB) Line 23	C++	Symbols loaded.
UE4Game.exe!TGraphTask<TEnqueueUniqueRenderCommandType<`UAsyncTaskDownloadImage::HandleImageRequest'::`18'::FWriteRawDataToTextureName,<lambda_5b8d6e544bf2cdcf9314ad29dca60d99>>>::ExecuteTask(TArray<FBaseGraphTask *,TSizedDefaultAllocator<32>> & NewTasks, ENamedThreads::Type CurrentThread) Line 852	C++	Symbols loaded.
[Inline Frame] UE4Game.exe!FBaseGraphTask::Execute(TArray<FBaseGraphTask *,TSizedDefaultAllocator<32>> & CurrentThread, ENamedThreads::Type) Line 516	C++	Symbols loaded.
UE4Game.exe!FNamedTaskThread::ProcessTasksNamedThread(int QueueIndex, bool bAllowStall) Line 692	C++	Symbols loaded.
UE4Game.exe!FNamedTaskThread::ProcessTasksUntilQuit(int QueueIndex) Line 587	C++	Symbols loaded.
UE4Game.exe!RenderingThreadMain(FEvent * TaskGraphBoundSyncEvent) Line 341	C++	Symbols loaded.
UE4Game.exe!FRenderingThread::Run() Line 492	C++	Symbols loaded.

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Unresolved
ComponentTools - UMG
Affects Versions4.25
Target Fix4.26
CreatedOct 8, 2020
UpdatedOct 23, 2020