GPUOpen-Effects
[UE5.0.3 FSR2.1 plugin] Game crashing when resizing the game window smaller then 64x64
Hello, We recently encountered this issue when FSR is activated in our project. If we try to resize the window to a very small size ( lower then 64x64) we get a 100% crash when trying to create a UAV.
This seems to happen because the values set for the UAVMips of FFX_FSR2_RESOURCE_IDENTIFIER_AUTO_EXPOSURE_MIPMAP_5 in
static void scheduleDispatch(FfxFsr2Context_Private* context, const FfxFsr2DispatchDescription* params, const FfxPipelineState* pipeline, uint32_t dispatchX, uint32_t dispatchY)
for the ComputeLuminancePyramid pass uses some defines values that assumes that the image is always going to be big enough to have those mips :
jobDescriptor.uavMip[currentUnorderedAccessViewIndex] = currentResourceId -FFX_FSR2_RESOURCE_IDENTIFIER_AUTO_EXPOSURE_MIPMAP_0;
To prevent this crash on our end, we ended up clamping those mips index to a valid value. Here'a a callstack of the crash :
> UnrealEditor-RenderCore.dll!FRDGUserValidation::ValidateCreateUAV(const FRDGTextureUAVDesc & Desc) Line 359 C++ UnrealEditor-RenderCore.dll!FRDGBuilder::CreateUAV(const FRDGTextureUAVDesc & Desc, ERDGUnorderedAccessViewFlags InFlags) Line 98 C++ UnrealEditor-FSR2TemporalUpscaling.dll!FFSR2ComputeLuminancePyramidCS::BindParameters(FRDGBuilder & GraphBuilder, FFSR2BackendState * Context, const FfxGpuJobDescription * job, FFSR2ComputeLuminancePyramidCS::FParameters * Parameters) Line 162 C++ UnrealEditor-FSR2TemporalUpscaling.dll!TFSR2SubPass<FFSR2ComputeLuminancePyramidCS>::Dispatch(FRDGBuilder & GraphBuilder, FFSR2BackendState * Context, const FfxGpuJobDescription * job) Line 107 C++ UnrealEditor-FSR2TemporalUpscaling.dll!FlushRenderJobs_UE(FfxFsr2Interface * backendInterface, void * commandList) Line 526 C++ UnrealEditor-FFXFSR2Api.dll!fsr2Dispatch(FfxFsr2Context_Private * context, const FfxFsr2DispatchDescription * params) Line 803 C++ UnrealEditor-FSR2TemporalUpscaling.dll!FFSR2TemporalUpscaler::AddPasses(FRDGBuilder & GraphBuilder, const FViewInfo & View, const ITemporalUpscaler::FPassInputs & PassInputs) Line 1453 C++ UnrealEditor-Renderer.dll!AddPostProcessingPasses(FRDGBuilder & GraphBuilder, const FViewInfo & View, bool bAnyLumenActive, const FPostProcessingInputs & Inputs, const Nanite::FRasterResults * NaniteRasterResults, FInstanceCullingManager & InstanceCullingManager, FVirtualShadowMapArray * VirtualShadowMapArray, FLumenSceneFrameTemporaries & LumenFrameTemporaries) Line 610 C++ UnrealEditor-Renderer.dll!FDeferredShadingSceneRenderer::Render(FRDGBuilder & GraphBuilder) Line 3329 C++ UnrealEditor-Renderer.dll!RenderViewFamily_RenderThread(FRHICommandListImmediate & RHICmdList, FSceneRenderer * SceneRenderer) Line 4149 C++ UnrealEditor-Renderer.dll!FRendererModule::BeginRenderingViewFamily::__l46::<lambda>(FRHICommandListImmediate & RHICmdList) Line 4400 C++ UnrealEditor-Renderer.dll!TEnqueueUniqueRenderCommandType<FRendererModule::BeginRenderingViewFamily'::46'::FDrawSceneCommandName,void <lambda>(FRHICommandListImmediate &)>::DoTask(ENamedThreads::Type CurrentThread, const TRefCountPtr<FGraphEvent> & MyCompletionGraphEvent) Line 193 C++ UnrealEditor-Renderer.dll!TGraphTask<TEnqueueUniqueRenderCommandType<FRendererModule::BeginRenderingViewFamily'::46'::FDrawSceneCommandName,void <lambda>(FRHICommandListImmediate &)>>::ExecuteTask(TArray<FBaseGraphTask *,TSizedDefaultAllocator<32>> & NewTasks, ENamedThreads::Type CurrentThread, bool bDeleteOnCompletion) Line 975 C++ [Inline Frame] UnrealEditor-Core.dll!FBaseGraphTask::Execute(TArray<FBaseGraphTask *,TSizedDefaultAllocator<32>> & CurrentThread, ENamedThreads::Type) Line 587 C++ UnrealEditor-Core.dll!FNamedTaskThread::ProcessTasksNamedThread(int QueueIndex, bool bAllowStall) Line 753 C++ UnrealEditor-Core.dll!FNamedTaskThread::ProcessTasksUntilQuit(int QueueIndex) Line 642 C++ UnrealEditor-Core.dll!FTaskGraphCompatibilityImplementation::ProcessThreadUntilRequestReturn(ENamedThreads::Type CurrentThread) Line 2115 C++ UnrealEditor-RenderCore.dll!RenderingThreadMain(FEvent * TaskGraphBoundSyncEvent) Line 380 C++ UnrealEditor-RenderCore.dll!FRenderingThread::Run() Line 546 C++ UnrealEditor-Core.dll!FRunnableThreadWin::Run() Line 146 C++ UnrealEditor-Core.dll!FRunnableThreadWin::GuardedRun() Line 68 C++``
