Antialiasing doesn't work in split screen mode

The issue is in both Editor and standalone game play:

  • Create a “Lightroom: interior day light” project.
  • Open Level Blueprint, Added a “Create Player” node to “Event BeginPlay” event,
  • Alt-P to start previewing in editor, or launch game.
  • Notice that aliasing on edge of the window are way worse then single player mode.

btw, my engine version is 4.18

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Thanks

AA is disabled in split screen by design.

Is there a way to re-enable it?

Is there a list somewhere of what effects are disabled in split-screen?

AFAIK there isn’t a list of the Post Process effects which are disabled in split-screen, but I know motion blur and TAA are (and probably bloom and lens flares). It is disabled because of issues that arise from power of two down sampling of the target that contains multiple screens.

I have entered a Feature Request for an option to Re-enable Post Process effects for splitscreen which can be tracked here. Currently the only way to re-enable these effects is by modifying the source code.

The feature request appears to have been removed, despite having about 40 votes last time I checked. .