Hello,
I simply created one blank project on 4.26 and tried to enable HZBO w/ r.HZBOcclusion 1 inside the Output Log. But that causes the engine to crash.
Please refer you to this WeTransfer with .xml, .ini, .log and .dmp crash files. Or even to the crash report just below:
LoginId:72d19b7347b26e8def1a7692af542dee
EpicAccountId:6a8b58591e0843809e52b70c4f13df3a
Assertion failed: !bIsLoadActionInvalid [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/RenderCore/Private/RenderGraphValidation.cpp] [Line: 421] Pass ‘TestHZB’ attempted to bind texture ‘HZBResultsGPU’ as a render target with the ‘Load’ action specified, but the texture has not been produced yet. The render target must use either ‘Clear’ or ‘NoAction’ action instead.
UE4Editor_Core!AssertFailedImplV() [D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Private\Misc\AssertionMacros.cpp:102]
UE4Editor_Core!FDebug::CheckVerifyFailedImpl() [D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Private\Misc\AssertionMacros.cpp:458]
UE4Editor_RenderCore!DispatchCheckVerify<void,<lambda_561ad540fc9f2881804028ab392608f0> >() [D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Public\Misc\AssertionMacros.h:165]
UE4Editor_RenderCore!FRDGUserValidation::ValidateAddPass() [D:\Build++UE4\Sync\Engine\Source\Runtime\RenderCore\Private\RenderGraphValidation.cpp:417]
UE4Editor_RenderCore!FRDGBuilder::SetupPass() [D:\Build++UE4\Sync\Engine\Source\Runtime\RenderCore\Private\RenderGraphBuilder.cpp:1331]
UE4Editor_Renderer!FRDGBuilder::AddPass<FHZBOcclusionTestHZBParameters,<lambda_7b9d0141458e1611a149fdbf67cd928e> >() [D:\Build++UE4\Sync\Engine\Source\Runtime\RenderCore\Public\RenderGraphBuilder.inl:281]
UE4Editor_Renderer!FHZBOcclusionTester::Submit() [D:\Build++UE4\Sync\Engine\Source\Runtime\Renderer\Private\SceneOcclusion.cpp:966]
UE4Editor_Renderer!FDeferredShadingSceneRenderer::RenderHzb() [D:\Build++UE4\Sync\Engine\Source\Runtime\Renderer\Private\DeferredShadingRenderer.cpp:357]
UE4Editor_Renderer!FDeferredShadingSceneRenderer::RenderOcclusion() [D:\Build++UE4\Sync\Engine\Source\Runtime\Renderer\Private\SceneOcclusion.cpp:1388]
UE4Editor_Renderer!FDeferredShadingSceneRenderer::Render() [D:\Build++UE4\Sync\Engine\Source\Runtime\Renderer\Private\DeferredShadingRenderer.cpp:1774]
UE4Editor_Renderer!RenderViewFamily_RenderThread() [D:\Build++UE4\Sync\Engine\Source\Runtime\Renderer\Private\SceneRendering.cpp:3600]
UE4Editor_Renderer!<lambda_98e5bccbef990afae09bf303afae0c23>::operator()() [D:\Build++UE4\Sync\Engine\Source\Runtime\Renderer\Private\SceneRendering.cpp:3870]
UE4Editor_Renderer!TEnqueueUniqueRenderCommandType<FRendererModule::BeginRenderingViewFamily'::
35’::FDrawSceneCommandName,<lambda_98e5bccbef990afae09bf303afae0c23> >::DoTask() [D:\Build++UE4\Sync\Engine\Source\Runtime\RenderCore\Public\RenderingThread.h:183]
UE4Editor_Renderer!TGraphTask<TEnqueueUniqueRenderCommandType<FRendererModule::BeginRenderingViewFamily'::
35’::FDrawSceneCommandName,<lambda_98e5bccbef990afae09bf303afae0c23> > >::ExecuteTask() [D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Public\Async\TaskGraphInterfaces.h:886]
UE4Editor_Core!FNamedTaskThread::ProcessTasksNamedThread() [D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:709]
UE4Editor_Core!FNamedTaskThread::ProcessTasksUntilQuit() [D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:601]
UE4Editor_RenderCore!RenderingThreadMain() [D:\Build++UE4\Sync\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp:373]
UE4Editor_RenderCore!FRenderingThread::Run() [D:\Build++UE4\Sync\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp:509]
UE4Editor_Core!FRunnableThreadWin::Run() [D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Private\Windows\WindowsRunnableThread.cpp:86]
In the same way, I had already mentioned this problem the 10-10-2020 on the Unreal Engine 4.26 Preview topic .
Best regards.
Hunanbean
(Hunanbean)
January 3, 2021, 2:22am
3
Same problem here. r.HZBOcclussion 1 exit crashes the engine.
slavensb
(slavensb)
January 21, 2021, 9:18am
4
Same problem as well on 4.26 release branch (built from source). r.HZBOcclusion 1 gives me this error:
https://i.imgur.com/GXO9syA.png