From 5a05ae0de2ee95f9953c5fd9b67b1116fbaed9cc Mon Sep 17 00:00:00 2001
From: BlueInterlude <180455074+BlueInterlude@users.noreply.github.com>
Date: Tue, 24 Mar 2026 10:57:53 -0400
Subject: [PATCH] Grant access to Gamescope socket for Steam Deck OLED

* See https://github.com/flathub/org.DolphinEmu.dolphin-emu/pull/178#issuecomment-1905194043 for more information
* Bug only occurs on the Steam Deck OLED when using the Vulkan renderer.

To replicate the error, on a Steam Deck OLED, install the Gamescope Flatpak, set renderer to Vulkan, launch a ROM in Game Mode through the Cemu GUI, see error. Gamescope Flatpak is primarily used for HDR in other Flatpaks (Dolphin, PrimeHack, Heroic, etc.).

![image](https://github.com/user-attachments/assets/745b9487-b8ed-4d3f-bb55-6e02c152ba92)

This isn't an issue on the current runtime used but will be when the runtime is bumped (noticed on other recomps with newer runtimes), will PR the same to the others.
---
 flatpak/io.github.bm64recomp.bm64recomp.json | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/flatpak/io.github.bm64recomp.bm64recomp.json b/flatpak/io.github.bm64recomp.bm64recomp.json
index e182627..be40262 100644
--- a/flatpak/io.github.bm64recomp.bm64recomp.json
+++ b/flatpak/io.github.bm64recomp.bm64recomp.json
@@ -13,7 +13,8 @@
     "--filesystem=host",
     "--filesystem=/media",
     "--filesystem=/run/media",
-    "--filesystem=/mnt"
+    "--filesystem=/mnt",
+    "--filesystem=xdg-run/gamescope-0:ro"
   ],
   "modules": [
     {