Unreal Engine Issues

Memory Leak With NullRHI

Shader complexity mode reportedly broken on Vulkan

Shader complexity reported (on AH) broken on Linux since 4.25. No local repro attempted. https://answers.unrealengine.com/questions/1019826/shader-complevity-view-mode-is-completely-broken-s.html ...

virtual texture lightmap crash due to pixel format r8Unorm_srgb in MacEditor

Currently r8Unorm_srgb is required by virtual texture lightmap, and the Metal RHI simply forbids r8Unorm_srgb on Mac platform. Since the latest MacOS 11.0+ have the support of r8Unorm_srgb, we shoul ...

Regression in editor performance in D3D11

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

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"

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

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

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

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

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 ...