attempt gamescope fix

systems/x86_64-linux/drivebystation-nix/default.nix

@@ -55,12 +55,49 @@ in
         ];
       };
       # lib.my-namespace.home.stream-tools.enable = true;
+      programs.gamescope.enable = true;
       programs.steam = {
         enable = true;
         remotePlay.openFirewall = true; # Open ports in the firewall for Steam Remote Play
         dedicatedServer.openFirewall = true; # Open ports in the firewall for Source Dedicated Server
         localNetworkGameTransfers.openFirewall = true; # Open ports in the firewall for Steam Local Network Game Transfers
-        gamescopeSession.enable = true; 
+
+        gamescopeSession = {
+          enable = true;
+          env = {
+            WLR_RENDERER = "vulkan";
+            # DXVK_HDR = "1";
+            ENABLE_GAMESCOPE_WSI = "1";
+            WINE_FULLSCREEN_FSR = "1";
+            # Games allegedly prefer X11
+            # SDL_VIDEODRIVER = "x11";
+          };
+          args = [
+            # "--xwayland-count 1"
+            "--expose-wayland"
+
+            "-e" # Enable steam integration
+            "--steam"
+
+            # "--adaptive-sync"
+            # "--hdr-enabled"
+            # "--hdr-itm-enable"
+
+            # External monitor
+            # "--prefer-output DP-3"
+            # "--output-width 1920"
+            # "--output-height 1080"
+            # "-r 172"
+
+            # Laptop display
+            # "--prefer-output eDP-1"
+            # "--output-width 2560"
+            # "--output-height 1600"
+            # "-r 120"
+            
+            "--prefer-vk-device 10de:1b81" # lspci -nn | grep VGA
+          ];
+        };
       };
 
       # Open ports in the firewall.
@@ -126,4 +163,4 @@ in
       systemd.targets.hibernate.enable = false;
       systemd.targets.hybrid-sleep.enable = false;
     };
-  }
+}