architect: add modelines and resolution switching script to sunshine

hosts/architect/sunshine.nix

@@ -2,13 +2,38 @@
 
 let
   user = "sunshine";
+  resolutionScript = pkgs.writeTextFile {
+    name = "sunshine-resolution-script";
+    text = ''
+      #!/usr/bin/env bash      
+      
+      width=''${1:-1920}
+      height=''${2:-1080}
+      refresh_rate=''${3:-120}
+
+      # Get the modeline info from the 2nd row in the cvt output
+      modeline=$(cvt ''${width} ''${height} ''${refresh_rate} | gawk 'FNR == 2')
+      xrandr_mode_str=''${modeline//Modeline \"*\" /}
+      mode_alias="''${width}x''${height}"
+
+      echo "xrandr setting new mode ''${mode_alias} ''${xrandr_mode_str}" 
+      xrandr --rmmode ''${mode_alias} 
+      xrandr --newmode ''${mode_alias} ''${xrandr_mode_str}
+      xrandr --addmode DP-0 ''${mode_alias}
+
+      # Apply new xrandr mode
+      xrandr --output DP-0 --primary --mode ''${mode_alias} --pos 0x0 --rotate normal
+    '';
+    executable = true;
+    destination = "/bin/resolution.sh";
+  };
   configFile = pkgs.writeText "sunshine.conf"
     ''
       output_name=1
       origin_web_ui_allowed=lan
       channels=2
       min_threads=12
-      global_prep_cmd=[{"do":"/run/current-system/sw/bin/sh -c \"/run/current-system/sw/bin/xrandr --output DP-0 --mode \"''${SUNSHINE_CLIENT_WIDTH}x''${SUNSHINE_CLIENT_HEIGHT}\" --rate ''${SUNSHINE_CLIENT_FPS}\""}]
+      global_prep_cmd=[{"do":"${pkgs.bash}/bin/bash -c \"${resolutionScript}/bin/resolution.sh ''${SUNSHINE_CLIENT_WIDTH} ''${SUNSHINE_CLIENT_HEIGHT} ''${SUNSHINE_CLIENT_FPS}\""}]
     '';
   sunshineOverride = pkgs.sunshine.override { cudaSupport = true; stdenv = pkgs.cudaPackages.backendStdenv; };
 in
@@ -38,9 +63,9 @@ in
     sunshineOverride
     xorg.xrandr
     xorg.xorgserver
+    xorg.libxcvt
   ];
   sound.enable = true;
-  hardware.pulseaudio.enable = true;
 
   services.xserver = {
     enable = true;
@@ -63,6 +88,19 @@ in
       HorizSync       5.0 - 1000.0
       VertRefresh     5.0 - 1000.0
       Option         "DPMS"
+
+      # 2240x1290 @ 30.00 Hz (GTF) hsync: 39.39 kHz; pclk: 113.44 MHz
+      Modeline "2240x1290_30.00"  113.44  2240 2328 2560 2880  1290 1291 1294 1313  -HSync +Vsync
+      # 2240x1290 @ 60.00 Hz (GTF) hsync: 80.10 kHz; pclk: 243.50 MHz
+      Modeline "2240x1290_60.00"  243.50  2240 2400 2640 3040  1290 1291 1294 1335  -HSync +Vsync
+      # 2240x1290 @ 120.00 Hz (GTF) hsync: 165.84 kHz; pclk: 517.42 MHz
+      Modeline "2240x1290_120.00"  517.42  2240 2432 2680 3120  1290 1291 1294 1382  -HSync +Vsync
+      # 2800x1290 @ 30.00 Hz (GTF) hsync: 39.39 kHz; pclk: 141.80 MHz
+      Modeline "2800x1290_30.00"  141.80  2800 2912 3200 3600  1290 1291 1294 1313  -HSync +Vsync
+      # 2800x1290 @ 60.00 Hz (GTF) hsync: 80.10 kHz; pclk: 303.74 MHz
+      Modeline "2800x1290_60.00"  303.74  2800 2992 3296 3792  1290 1291 1294 1335  -HSync +Vsync
+      # 2800x1290 @ 120.00 Hz (GTF) hsync: 165.84 kHz; pclk: 647.44 MHz
+      Modeline "2800x1290_120.00"  647.44  2800 3040 3352 3904  1290 1291 1294 1382  -HSync +Vsync
     '';
 
     deviceSection = ''
@@ -101,7 +139,7 @@ in
     partOf = [ "graphical-session.target" ];
     wants = [ "graphical-session.target" ];
     after = [ "graphical-session.target" ];
-
+    path = [ resolutionScript pkgs.xorg.xrandr pkgs.bash pkgs.xorg.libxcvt pkgs.xorg.xorgserver pkgs.gawk ];
     serviceConfig = {
       ExecStart = "${sunshineOverride}/bin/sunshine ${configFile}";
       Restart = "on-failure";
@@ -115,6 +153,7 @@ in
   programs.steam.enable = true;
 
   hardware = {
+    pulseaudio.enable = true;
     opengl = {
       enable = true;
       driSupport = true;