Runtime env settings: XNATOFNA_DISPLAY_SIZE=WxH & XNATOFNA_DISPLAY_FU…

…LLSCREEN=1 / 0
0x0ade · Oct 26, 2017 · 96a116d · 96a116d
1 parent 1519430
commit 96a116d
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diff --git a/src/Helper/XnaToFnaHelper.cs b/src/Helper/XnaToFnaHelper.cs
@@ -63,6 +63,31 @@ public static IntPtr GetProxyFormHandle(this GameWindow window) {
         // Only used when --hook-istrialmode / --arr is provided when patching.
         public static bool get_IsTrialMode()
             => Environment.GetEnvironmentVariable("XNATOFNA_ISTRIALMODE") != "0";
+
+        // This needs to be hooked to check for the env vars at runtime.
+        public static void ApplyChanges(GraphicsDeviceManager self) {
+            string forceFullscreen = Environment.GetEnvironmentVariable("XNATOFNA_DISPLAY_FULLSCREEN");
+            if (forceFullscreen == "0")
+                self.IsFullScreen = false;
+            else if (forceFullscreen == "1")
+                self.IsFullScreen = true;
+
+            int forceWidth;
+            if (int.TryParse(Environment.GetEnvironmentVariable("XNATOFNA_DISPLAY_WIDTH"), out forceWidth))
+                self.PreferredBackBufferWidth = forceWidth;
+            int forceHeight;
+            if (int.TryParse(Environment.GetEnvironmentVariable("XNATOFNA_DISPLAY_HEIGHT"), out forceHeight))
+                self.PreferredBackBufferHeight = forceHeight;
+            string[] forceSize = Environment.GetEnvironmentVariable("XNATOFNA_DISPLAY_SIZE").Split('x');
+            if (forceSize.Length == 2) {
+                if (int.TryParse(forceSize[0], out forceWidth))
+                    self.PreferredBackBufferWidth = forceWidth;
+                if (int.TryParse(forceSize[1], out forceHeight))
+                    self.PreferredBackBufferHeight = forceHeight;
+            }
+
+            self.ApplyChanges();
+        }
 
         public static void PreUpdate(GameTime time) {
             // Don't ask me why some games use Win32 calls instead of Keyboard.GetState()...

diff --git a/src/XnaToFnaUtil.Processor.cs b/src/XnaToFnaUtil.Processor.cs
@@ -34,6 +34,10 @@ public void SetupHelperRelinker() {
             Modder.RelinkMap["System.IntPtr Microsoft.Xna.Framework.GameWindow::get_Handle()"] =
                 Tuple.Create("XnaToFna.XnaToFnaHelper", "System.IntPtr GetProxyFormHandle(Microsoft.Xna.Framework.GameWindow)");
 
+            // X360 games can be larger than the screen. Allow the user to "fix" this by forcing a display resolution via env vars.
+            Modder.RelinkMap["System.Void Microsoft.Xna.Framework.GraphicsDeviceManager::ApplyChanges()"] =
+                Tuple.Create("XnaToFna.XnaToFnaHelper", "System.Void ApplyChanges(Microsoft.Xna.Framework.GraphicsDeviceManager)");
+
             // Let's just completely wreck everything.
             foreach (Type type in typeof(Form).Assembly.GetTypes()) {
                 string name = type.FullName;