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Bug 5191

Summary: Wayland fullscreen does not forward NULL output
Product: SDL Reporter: Christian Rauch <Rauch.Christian>
Component: videoAssignee: Ryan C. Gordon <icculus>
Status: ASSIGNED --- QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2    
Version: 2.0.13   
Hardware: x86_64   
OS: Linux   

Description Christian Rauch 2020-06-14 21:32:41 UTC 
'SetFullscreen' uses output to determine if fullscreen should be set (output!=NULL) or unset (output==NULL).

However, the request xdg_toplevel.set_fullscreen also accepts NULL as output. From the protocol documentation:
> The output passed by the request indicates the client's preference as
> to which display it should be set fullscreen on. If this value is NULL,
> it's up to the compositor to choose which display will be used to map
> this surface.