Enable Wayland support as an opt-in feature

Closes #248
Closes #287

README.md

@@ -24,6 +24,16 @@ However, this sandboxing prevents the following features from working:
 - **Rich Presence**: See [this page](https://github.com/flathub/com.discordapp.Discord/wiki/Rich-Precense-(discord-rpc)) if you want to expose Discord's rich presence interface for other applications.
 
 
+### Wayland
+
+This package enables the flags to run on Wayland, however it is opt-in. To opt-in run:
+
+```sh
+flatpak override --user --socket=wayland com.discordapp.Discord
+```
+
+To opt-out do the same with `--nosocket=wayland`.
+
 ## Legal
 
 The Discord app itself is **proprietary** (closed source).

discord.sh

@@ -6,7 +6,12 @@ socat $SOCAT_ARGS \
     &
 socat_pid=$!
 
-FLAGS='--enable-gpu-rasterization --enable-zero-copy --enable-gpu-compositing --enable-native-gpu-memory-buffers --enable-oop-rasterization --enable-features=UseSkiaRenderer'
+FLAGS='--enable-gpu-rasterization --enable-zero-copy --enable-gpu-compositing --enable-native-gpu-memory-buffers --enable-oop-rasterization --enable-features=UseSkiaRenderer,WaylandWindowDecorations'
+
+if [[ -e "$XDG_RUNTIME_DIR/wayland-0" ]]
+then
+    FLAGS="$FLAGS --ozone-platform-hint=auto"
+fi
 
 if [[ $XDG_SESSION_TYPE == "wayland" ]] && [ -c /dev/nvidia0 ]
 then