Using r.GraphicsAdapter inside Unreal Engine doesn't do anything

dschiller
Wed, 20 Oct 2021 00:40:49 +0000
Community & Industry Discussion

Someone knows how the console parameter r.GraphicsAdapter inside Unreal engine works ?

Repro

Open Unreal Engine 4.27

Open any Project

Open Window / Developer Tools / Output Log

Enter r.GraphicsAdapter=1

Press Enter

Nothing happens and Unreal still uses the wrong GPU

Enter r.GraphicsAdapter=0

Press Enter

Nothing happens and Unreal still uses the wrong GPU

Enter r.GraphicsAdapter=2

Press Enter

Nothing happens and Unreal still uses the wrong GPU

Enter r.GraphicsAdapter=3

Press Enter

Nothing happens and Unreal still uses the wrong GPU

Enter r.GraphicsAdapter=4

Press Enter

Nothing happens and Unreal still uses the wrong GPU

Execute r.GraphicsAdapter shows r.GraphicsAdapter = “-1” LastSetBy: Constructor

Execute r.GraphicsAdapter=1

Execute r.GraphicsAdapter shows again r.GraphicsAdapter = “-1” LastSetBy: Constructor

Seems setting r.GraphicsAdapter inside Unreal doesn’t do anything at all. Someone knows why and how to fix that ?

The only location I could find inside all Unreal Manuals is here nDisplay Configuration File Reference | Unreal Engine Documentation

And there is as less description as possible.

5 posts - 5 participants