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.