Flickering Decals on Mac in Mobile Preview

Rendering - RHI - Mar 25, 2020

https://udn.unrealengine.com/questions/564376/flickering-decals-on-mac-in-mobile-preview.html ...

Crash when using Share Material Shader Code and Native Metal Libs with r.Shaders.Optimize=0

Rendering - RHI - Mar 17, 2020

Using r.Shaders.Optimize=0 with native metal libs results in a crash of the packaged build at runtime. Workarounds is to either not use native metal libs for text shaders or in MetalShaders.cpp co ...

Draw Brush Polys is not displayed when Separate Translucency is enabled

Rendering - RHI - Mar 9, 2020

This is working properly in 4.21.2 ...

D3D12RHI crash using laptops internal display

Rendering - RHI - Feb 17, 2020

Running the engine with DX12 enabled on MSI GS75 Stealth 9SF results in a D3D crash when using the internal display on the laptop. *Note: Unable to reproduce the crash. The user receiving the cra ...

Spline mesh actor + Vulkan RHI, rendering artifacts

Rendering - RHI - Feb 7, 2020

Rendering artifacts when using spline meshes with Vulkan enabled. Recent Nvidia drivers may be required for repro. (Users version: 441.66 , My Local Version: 441.12) Confirmed in MAIN 4.25 @ CL 11 ...

Shader compiler errors when using enclosed local variables in a material while ray tracing is enabled

Rendering - RHI - Jan 23, 2020

A licensee is seeing an issue with a couple of post process materials after enabling ray tracing. While the materials presenting the issue fail to compile for different reasons, they both refernce t ...

Materials using the Tessellation mode 'PN Triangles' cause objects to incorrectly render in Wireframe view mode when selected

Rendering - RHI - Jan 21, 2020

Creating a material that has it's tessellation mode set to "PN Triangles" and assigning it to an object results in the objects geometry to not properly display in Wireframe view mode.  Tested i ...

SSGI doesn't function properly using Vulkan

Rendering - RHI - Jan 20, 2020

Screen Space Global Illumination appears really dark when using the Vulkan RHI on Windows and Linux. This behavior is also present in a Shipping build. This was reported and tested on 4.24.1 (CL-1 ...

Allow include files to be added in custom nodes via separate entry

Rendering - RHI - Jan 10, 2020

Suggested feature by a licensee and there have been a few use cases recently we've seen. Marien El Alaoui for vis ...

DX12 crash when fullscreen app looses focus.

Rendering - RHI - Dec 19, 2019