Retroarch: Window not composited on GNOME wayland (flatpak)

[Nine-H]

Description

• Installed retroarch from flatpak on fedora27
• works fine in xorg
• no window border, can't drag or resize window in wayland
• running stable

```
[nine@x1-yoghurt ~]$ flatpak list
Ref Options
org.libretro.RetroArch/x86_64/stable user,current
org.freedesktop.Platform.VAAPI.Intel/x86_64/1.6 user,runtime
org.freedesktop.Platform.ffmpeg/x86_64/1.6 user,runtime
org.freedesktop.Platform/x86_64/1.6 user,runtime
````

Expected behavior

• I expect the flatpak package to function normally in a wayland session

Actual behavior

• I get a pseudo window that can't be interacted with from gnome
• clicking on the window (or app in fullscreen) goes "through" retroarch to the apps in the background

Steps to reproduce the bug

1. start a wayland sesson
2. flatpak run org.libretro.Retroarch
3. click anything

Version/Commit

You can find this information under Information/System Information

• RetroArch: 6fc6bfb

Environment information

• OS: fedora f27
• Compiler: GCC (6.2.0)64-bit

[hizzlekizzle]

I believe this is a duplicate of https://github.com/libretro/RetroArch/issues/4778

[myfreeweb]

can't drag or resize window in wayland

GNOME doesn't support Meta+LeftClick drag / Meta+RightClick resize on any window anywhere? Most desktops do I think.

[Nine-H]

I think it's super, and the events go straight through the window. Could just be build flags for the flatpak because I understand there is wayland support.

[costrouc]

I have the same issue Ubuntu 17.04 with wayland

[twinaphex]

Is this still an ongoing issue? Is there anybody able to help with this issue? @Themaister You have any clues?

[Nine-H]

current flatpak is working in fedora: no window controls, but you can move retroarch with the super key and it's added correctly to the window stack.

[Sunderland93]

RetroArch does not support Client-Side Decorations, which GNOME (and Weston) needs. And GNOME developers is against SSD (Server-Side Decorations), which I plan to implement in RetroArch after #7607 is merged.

[orbea]

@Sunderland93 Is this still an issue?

[Sunderland93]

@orbea since GNOME (and Weston) is against SSD (Server Side Decorations), it will be permanent issue, because RetroArch doesn's support client-side window decorations (it's really hard to implement it). RetroArch already support xdg-decoration protocol - standard Wayland extension which supported by Sway (and other wlroots-based compositors), and will be implemented in KDE Plasma 5.15.

[orbea]

Thanks for the update!