[SOLVED] - XessFG fatal error, running with other upscalers when disabled

[IntXThOrn]

When using the latest Xess for Unreal Engine in 5.6.1 source, there is a fatal error whenever playing in the editor related to XessFG.

This is caputed in Visual Studio debug as ...

Despite supplying a pre-launch setting of:

[/Script/XeSSCore.XeSSSettings] ;stat XeFG - TO TEST COMMAND LINE r.XeSS.Enabled=0 r.XeLL.Enabled=0 r.XeFG.Enabled=0 r.XeFG.OverrideSwapChain=1 bEnableXeSSInEditorViewports=False r.XeSS.Experimental.PreExposure=1 r.XeSS.AutoExposure=1 r.XeSS.Supported=1 r.XeSS.Quality=2

A temporary fix for this is to handle the null value preventing the fatal error. Solution in the image below:

Replace the code at line ~147 with the below:

#if XEFG_ENABLE_IN_BP if (XeFGRHI == nullptr) { FFrame::KismetExecutionMessage(TEXT("XeFGRHI is not initialized. Make sure Init() was called and XeFG is supported."), ELogVerbosity::Error); return false; // or appropriate fallback } return XeFGRHI->IsXeFGSupported() && GetXeFGMode() == EXeFGMode::On && !XeFGRHI->IfGameViewportUsesXeFGSwapChain(); #else return false; #endif

[xessgamedev]

Many thanks for reporting. We have a big refactor to solve this issue in the next release.

[xessgamedev]

Fixed in https://github.com/GameTechDev/XeSSUnrealPlugin/releases/tag/v2.2.0