Regression in editor performance in D3D11

UE - Rendering - RHI - Mar 3, 2021

D3D11Commands.cpp is doing FName resolutions in the critical fast path. This looks to be a regression from the memory freezing refactor. ...

Executing r.setres does not render correctly when Orientation of Display is Portrait on Windows PC

UE - Rendering - RHI - Feb 5, 2021

This issue will display correctly in Portrait if you don't specify a resolution, but using r.setres will display it incorrectly. ...

Vulkan RHI when execute the node "Create Render Target 2D" when enabling the option "AutoGenerate Mip Maps"

UE - Rendering - RHI - Jan 11, 2021

Unreal Crash in with Vulkan RHI when execute the node "Create Render Target 2D" with the option "AutoGenerate Mip Maps" then execute "Draw Material to Render Target" Opening the project also opens ...

Ensure when changing to MSAA with Forward Shading enabled - Entry.RenderTarget->GetNumSamples() == NumSample

UE - Rendering - RHI - Dec 2, 2020

DID NOT OCCUR IN BP FPS PROJECT - might be ContentExamples specific This issue does not occur when forward shading is disabled. This is not a regression as the same issue is hit in 4.25.4 ...

Failing to compile global shaders with OpenGL4 enabled

UE - Rendering - RHI - Oct 13, 2020

OpenGL is supported but deprecated in 4.26 OpenGL4 is deprecated, you can comment this back in to add it to your targeted RHI list If you comment this back out you can package for Linux without an i ...

Ensure/Crash upon opening TM-Hair with Vulkan RHI | Ensure condition failed: DepthStencilLayout == VK_IMAGE_LAYOUT_DEPTH_STENCIL_READ_ONLY_OPTIMAL

UE - Rendering - RHI - Oct 7, 2020

Ensure happening on both Linux and Windows when using Vulkan RHI. Editor will Crash on Linux however when map TM-Hair is opened. Not a Regression, TM-Hair and Grooming feature is new to 4.26 and do ...

HZBOcclusion fails in split screen when using D3D11

UE - Rendering - RHI - Oct 6, 2020

r.HZBOcclusion 1 gives incorrect results with split screen on D3D11. With -d3d12 it renders correctly. It also renders correctly if the RenderDoc plugin is enabled or the editor is running with -on ...

Editor hits Asserts when trying to use debug rendering such as ShowFlag.LODColoration

UE - Rendering - RHI - Sep 22, 2020

The assert in BasePassRendering.cpp:693 fires, crashing to desktop when using this console command in the editor, in PIE, and closes out the window when playing in Standalone. Does not crash when us ...

Text Render Actor with Material Instance using Parameter crashes when playing Standalone Game

UE - Rendering - RHI - Aug 31, 2020

Material Instance with Parameters on Text Render Actor causes crash when playing in Standalone. Reported and tested in version 4.25(CL 13942748). Works as expected in 4.24(CL 11590370). ...

Memory leaks at changing lighting scenarios

UE - Rendering - RHI - Aug 26, 2020

The engine does not free the LevelRenderAssetManagers array elements in FRenderAssetStreamingManager when changing lighting scenarios. Following code can avoid this issue. void FRenderAssetStre ...