Add SDL3_FNAPlatform, TextInputEXT.WindowHandle (#494)

Co-authored-by: Ethan Lee <flibitijibibo@gmail.com>

.gitmodules

@@ -10,3 +10,6 @@
 [submodule "lib/Theorafile"]
 	path = lib/Theorafile
 	url = https://github.com/FNA-XNA/Theorafile
+[submodule "lib/SDL3-CS"]
+	path = lib/SDL3-CS
+	url = https://github.com/flibitijibibo/SDL3-CS.git

FNA.Core.csproj

@@ -136,6 +136,7 @@
 		<Compile Include="src\FNAPlatform\FNAPlatform.cs" />
 		<Compile Include="src\FNAPlatform\FNAWindow.cs" />
 		<Compile Include="src\FNAPlatform\SDL2_FNAPlatform.cs" />
+		<Compile Include="src\FNAPlatform\SDL3_FNAPlatform.cs" />
 		<Compile Include="src\FrameworkDispatcher.cs" />
 		<Compile Include="src\Game.cs" />
 		<Compile Include="src\GameComponent.cs" />
@@ -337,6 +338,7 @@
 		<Compile Include="src\Vector3.cs" />
 		<Compile Include="src\Vector4.cs" />
 		<Compile Include="lib\SDL2-CS\src\SDL2.cs" />
+		<Compile Include="lib\SDL3-CS\SDL3\SDL3.cs" />
 		<Compile Include="lib\FAudio\csharp\FAudio.cs" />
 		<Compile Include="lib\Theorafile\csharp\Theorafile.cs" />
 	</ItemGroup>

FNA.NetFramework.csproj

@@ -137,6 +137,7 @@
 		<Compile Include="src\FNAPlatform\FNAPlatform.cs" />
 		<Compile Include="src\FNAPlatform\FNAWindow.cs" />
 		<Compile Include="src\FNAPlatform\SDL2_FNAPlatform.cs" />
+		<Compile Include="src\FNAPlatform\SDL3_FNAPlatform.cs" />
 		<Compile Include="src\FrameworkDispatcher.cs" />
 		<Compile Include="src\Game.cs" />
 		<Compile Include="src\GameComponent.cs" />
@@ -338,6 +339,7 @@
 		<Compile Include="src\Vector3.cs" />
 		<Compile Include="src\Vector4.cs" />
 		<Compile Include="lib\SDL2-CS\src\SDL2.cs" />
+		<Compile Include="lib\SDL3-CS\SDL3\SDL3.cs" />
 		<Compile Include="lib\FAudio\csharp\FAudio.cs" />
 		<Compile Include="lib\Theorafile\csharp\Theorafile.cs" />
 	</ItemGroup>

FNA.NetStandard.csproj

@@ -136,6 +136,7 @@
 		<Compile Include="src\FNAPlatform\FNAPlatform.cs" />
 		<Compile Include="src\FNAPlatform\FNAWindow.cs" />
 		<Compile Include="src\FNAPlatform\SDL2_FNAPlatform.cs" />
+		<Compile Include="src\FNAPlatform\SDL3_FNAPlatform.cs" />
 		<Compile Include="src\FrameworkDispatcher.cs" />
 		<Compile Include="src\Game.cs" />
 		<Compile Include="src\GameComponent.cs" />
@@ -337,6 +338,7 @@
 		<Compile Include="src\Vector3.cs" />
 		<Compile Include="src\Vector4.cs" />
 		<Compile Include="lib\SDL2-CS\src\SDL2.cs" />
+		<Compile Include="lib\SDL3-CS\SDL3\SDL3.cs" />
 		<Compile Include="lib\FAudio\csharp\FAudio.cs" />
 		<Compile Include="lib\Theorafile\csharp\Theorafile.cs" />
 	</ItemGroup>

FNA.csproj

@@ -207,6 +207,7 @@
     <Compile Include="src\FNAPlatform\FNAPlatform.cs" />
     <Compile Include="src\FNAPlatform\FNAWindow.cs" />
     <Compile Include="src\FNAPlatform\SDL2_FNAPlatform.cs" />
+    <Compile Include="src\FNAPlatform\SDL3_FNAPlatform.cs" />
     <Compile Include="src\FrameworkDispatcher.cs" />
     <Compile Include="src\Game.cs" />
     <Compile Include="src\GameComponent.cs" />
@@ -408,6 +409,7 @@
     <Compile Include="src\Vector3.cs" />
     <Compile Include="src\Vector4.cs" />
     <Compile Include="lib\SDL2-CS\src\SDL2.cs" />
+    <Compile Include="lib\SDL3-CS\SDL3\SDL3.cs" />
     <Compile Include="lib\FAudio\csharp\FAudio.cs" />
     <Compile Include="lib\Theorafile\csharp\Theorafile.cs" />
   </ItemGroup>

Makefile

@@ -121,6 +121,7 @@ SRC = \
 	src/FNAPlatform/FNAPlatform.cs \
 	src/FNAPlatform/FNAWindow.cs \
 	src/FNAPlatform/SDL2_FNAPlatform.cs \
+	src/FNAPlatform/SDL3_FNAPlatform.cs \
 	src/FrameworkDispatcher.cs \
 	src/Game.cs \
 	src/GameComponent.cs \
@@ -321,6 +322,7 @@ SRC = \
 	src/Vector3.cs \
 	src/Vector4.cs \
 	lib/SDL2-CS/src/SDL2.cs \
+	lib/SDL3-CS/SDL3/SDL3.cs \
 	lib/FAudio/csharp/FAudio.cs \
 	lib/Theorafile/csharp/Theorafile.cs
 

app.config

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <configuration>
-	<dllmap dll="SDL2" os="windows" target="SDL2.dll"/>
-	<dllmap dll="SDL2" os="osx" target="libSDL2-2.0.0.dylib"/>
-	<dllmap dll="SDL2" os="linux,freebsd,netbsd" target="libSDL2-2.0.so.0"/>
+	<dllmap dll="SDL3" os="windows" target="SDL3.dll"/>
+	<dllmap dll="SDL3" os="osx" target="libSDL3.0.dylib"/>
+	<dllmap dll="SDL3" os="linux,freebsd,netbsd" target="libSDL3.so.0"/>
 
 	<dllmap dll="FNA3D" os="windows" target="FNA3D.dll"/>
 	<dllmap dll="FNA3D" os="osx" target="libFNA3D.0.dylib"/>
@@ -11,4 +11,9 @@
 	<dllmap dll="FAudio" os="windows" target="FAudio.dll"/>
 	<dllmap dll="FAudio" os="osx" target="libFAudio.0.dylib"/>
 	<dllmap dll="FAudio" os="linux,freebsd,netbsd" target="libFAudio.so.0"/>
+
+	<!-- Deprecated! -->
+	<dllmap dll="SDL2" os="windows" target="SDL2.dll"/>
+	<dllmap dll="SDL2" os="osx" target="libSDL2-2.0.0.dylib"/>
+	<dllmap dll="SDL2" os="linux,freebsd,netbsd" target="libSDL2-2.0.so.0"/>
 </configuration>

src/FNAPlatform/FNAPlatform.cs

@@ -36,9 +36,16 @@ static FNAPlatform()
 			 * -flibit
 			 */
 
-			// Environment.GetEnvironmentVariable("FNA_PLATFORM_BACKEND");
+			bool useSDL3 = Environment.GetEnvironmentVariable("FNA_PLATFORM_BACKEND") == "SDL3";
 
-			SetEnv = SDL2_FNAPlatform.SetEnv;
+			if (useSDL3)
+			{
+				SetEnv = SDL3_FNAPlatform.SetEnv;
+			}
+			else
+			{
+				SetEnv = SDL2_FNAPlatform.SetEnv;
+			}
 
 			// Built-in command line arguments
 			LaunchParameters args = new LaunchParameters();
@@ -93,63 +100,129 @@ static FNAPlatform()
 				);
 			}
 
-			Malloc =			SDL2_FNAPlatform.Malloc;
-			Free =				SDL2.SDL.SDL_free;
-			CreateWindow =			SDL2_FNAPlatform.CreateWindow;
-			DisposeWindow =			SDL2_FNAPlatform.DisposeWindow;
-			ApplyWindowChanges =		SDL2_FNAPlatform.ApplyWindowChanges;
-			ScaleForWindow =		SDL2_FNAPlatform.ScaleForWindow;
-			GetWindowBounds =		SDL2_FNAPlatform.GetWindowBounds;
-			GetWindowResizable =		SDL2_FNAPlatform.GetWindowResizable;
-			SetWindowResizable =		SDL2_FNAPlatform.SetWindowResizable;
-			GetWindowBorderless =		SDL2_FNAPlatform.GetWindowBorderless;
-			SetWindowBorderless =		SDL2_FNAPlatform.SetWindowBorderless;
-			SetWindowTitle =		SDL2_FNAPlatform.SetWindowTitle;
-			IsScreenKeyboardShown =		SDL2_FNAPlatform.IsScreenKeyboardShown;
-			RegisterGame =			SDL2_FNAPlatform.RegisterGame;
-			UnregisterGame =		SDL2_FNAPlatform.UnregisterGame;
-			PollEvents =			SDL2_FNAPlatform.PollEvents;
-			GetGraphicsAdapters =		SDL2_FNAPlatform.GetGraphicsAdapters;
-			GetCurrentDisplayMode =		SDL2_FNAPlatform.GetCurrentDisplayMode;
-			GetKeyFromScancode =		SDL2_FNAPlatform.GetKeyFromScancode;
-			IsTextInputActive =		SDL2_FNAPlatform.IsTextInputActive;
-			StartTextInput =		SDL2.SDL.SDL_StartTextInput;
-			StopTextInput =			SDL2.SDL.SDL_StopTextInput;
-			SetTextInputRectangle =		SDL2_FNAPlatform.SetTextInputRectangle;
-			GetMouseState =			SDL2_FNAPlatform.GetMouseState;
-			SetMousePosition =		SDL2.SDL.SDL_WarpMouseInWindow;
-			OnIsMouseVisibleChanged =	SDL2_FNAPlatform.OnIsMouseVisibleChanged;
-			GetRelativeMouseMode =		SDL2_FNAPlatform.GetRelativeMouseMode;
-			SetRelativeMouseMode =		SDL2_FNAPlatform.SetRelativeMouseMode;
-			GetGamePadCapabilities =	SDL2_FNAPlatform.GetGamePadCapabilities;
-			GetGamePadState =		SDL2_FNAPlatform.GetGamePadState;
-			SetGamePadVibration =		SDL2_FNAPlatform.SetGamePadVibration;
-			SetGamePadTriggerVibration =	SDL2_FNAPlatform.SetGamePadTriggerVibration;
-			GetGamePadGUID =		SDL2_FNAPlatform.GetGamePadGUID;
-			SetGamePadLightBar =		SDL2_FNAPlatform.SetGamePadLightBar;
-			GetGamePadGyro = 		SDL2_FNAPlatform.GetGamePadGyro;
-			GetGamePadAccelerometer =	SDL2_FNAPlatform.GetGamePadAccelerometer;
-			GetStorageRoot =		SDL2_FNAPlatform.GetStorageRoot;
-			GetDriveInfo =			SDL2_FNAPlatform.GetDriveInfo;
-			ReadFileToPointer =		SDL2_FNAPlatform.ReadToPointer;
-			FreeFilePointer =		SDL2_FNAPlatform.FreeFilePointer;
-			ShowRuntimeError =		SDL2_FNAPlatform.ShowRuntimeError;
-			GetMicrophones =		SDL2_FNAPlatform.GetMicrophones;
-			GetMicrophoneSamples =		SDL2_FNAPlatform.GetMicrophoneSamples;
-			GetMicrophoneQueuedBytes =	SDL2_FNAPlatform.GetMicrophoneQueuedBytes;
-			StartMicrophone =		SDL2_FNAPlatform.StartMicrophone;
-			StopMicrophone =		SDL2_FNAPlatform.StopMicrophone;
-			GetTouchCapabilities =		SDL2_FNAPlatform.GetTouchCapabilities;
-			UpdateTouchPanelState =		SDL2_FNAPlatform.UpdateTouchPanelState;
-			GetNumTouchFingers =		SDL2_FNAPlatform.GetNumTouchFingers;
-			SupportsOrientationChanges =	SDL2_FNAPlatform.SupportsOrientationChanges;
-			NeedsPlatformMainLoop = 	SDL2_FNAPlatform.NeedsPlatformMainLoop;
-			RunPlatformMainLoop =		SDL2_FNAPlatform.RunPlatformMainLoop;
+			if (useSDL3)
+			{
+				Malloc =			SDL3_FNAPlatform.Malloc;
+				Free =				SDL3.SDL.SDL_free;
+				CreateWindow =			SDL3_FNAPlatform.CreateWindow;
+				DisposeWindow =			SDL3_FNAPlatform.DisposeWindow;
+				ApplyWindowChanges =		SDL3_FNAPlatform.ApplyWindowChanges;
+				ScaleForWindow =		SDL3_FNAPlatform.ScaleForWindow;
+				GetWindowBounds =		SDL3_FNAPlatform.GetWindowBounds;
+				GetWindowResizable =		SDL3_FNAPlatform.GetWindowResizable;
+				SetWindowResizable =		SDL3_FNAPlatform.SetWindowResizable;
+				GetWindowBorderless =		SDL3_FNAPlatform.GetWindowBorderless;
+				SetWindowBorderless =		SDL3_FNAPlatform.SetWindowBorderless;
+				SetWindowTitle =		SDL3_FNAPlatform.SetWindowTitle;
+				IsScreenKeyboardShown =		SDL3_FNAPlatform.IsScreenKeyboardShown;
+				RegisterGame =			SDL3_FNAPlatform.RegisterGame;
+				UnregisterGame =		SDL3_FNAPlatform.UnregisterGame;
+				PollEvents =			SDL3_FNAPlatform.PollEvents;
+				GetGraphicsAdapters =		SDL3_FNAPlatform.GetGraphicsAdapters;
+				GetCurrentDisplayMode =		SDL3_FNAPlatform.GetCurrentDisplayMode;
+				GetKeyFromScancode =		SDL3_FNAPlatform.GetKeyFromScancode;
+				IsTextInputActive =		SDL3_FNAPlatform.IsTextInputActive;
+				StartTextInput =		SDL3_FNAPlatform.StartTextInput;
+				StopTextInput =			SDL3_FNAPlatform.StopTextInput;
+				SetTextInputRectangle =		SDL3_FNAPlatform.SetTextInputRectangle;
+				GetMouseState =			SDL3_FNAPlatform.GetMouseState;
+				SetMousePosition =		SDL3_FNAPlatform.WarpMouseInWindow;
+				OnIsMouseVisibleChanged =	SDL3_FNAPlatform.OnIsMouseVisibleChanged;
+				GetRelativeMouseMode =		SDL3_FNAPlatform.GetRelativeMouseMode;
+				SetRelativeMouseMode =		SDL3_FNAPlatform.SetRelativeMouseMode;
+				GetGamePadCapabilities =	SDL3_FNAPlatform.GetGamePadCapabilities;
+				GetGamePadState =		SDL3_FNAPlatform.GetGamePadState;
+				SetGamePadVibration =		SDL3_FNAPlatform.SetGamePadVibration;
+				SetGamePadTriggerVibration =	SDL3_FNAPlatform.SetGamePadTriggerVibration;
+				GetGamePadGUID =		SDL3_FNAPlatform.GetGamePadGUID;
+				SetGamePadLightBar =		SDL3_FNAPlatform.SetGamePadLightBar;
+				GetGamePadGyro = 		SDL3_FNAPlatform.GetGamePadGyro;
+				GetGamePadAccelerometer =	SDL3_FNAPlatform.GetGamePadAccelerometer;
+				GetStorageRoot =		SDL3_FNAPlatform.GetStorageRoot;
+				GetDriveInfo =			SDL3_FNAPlatform.GetDriveInfo;
+				ReadFileToPointer =		SDL3_FNAPlatform.ReadToPointer;
+				FreeFilePointer =		SDL3_FNAPlatform.FreeFilePointer;
+				ShowRuntimeError =		SDL3_FNAPlatform.ShowRuntimeError;
+				GetMicrophones =		SDL3_FNAPlatform.GetMicrophones;
+				GetMicrophoneSamples =		SDL3_FNAPlatform.GetMicrophoneSamples;
+				GetMicrophoneQueuedBytes =	SDL3_FNAPlatform.GetMicrophoneQueuedBytes;
+				StartMicrophone =		SDL3_FNAPlatform.StartMicrophone;
+				StopMicrophone =		SDL3_FNAPlatform.StopMicrophone;
+				GetTouchCapabilities =		SDL3_FNAPlatform.GetTouchCapabilities;
+				UpdateTouchPanelState =		SDL3_FNAPlatform.UpdateTouchPanelState;
+				GetNumTouchFingers =		SDL3_FNAPlatform.GetNumTouchFingers;
+				SupportsOrientationChanges =	SDL3_FNAPlatform.SupportsOrientationChanges;
+				NeedsPlatformMainLoop = 	SDL3_FNAPlatform.NeedsPlatformMainLoop;
+				RunPlatformMainLoop =		SDL3_FNAPlatform.RunPlatformMainLoop;
+			}
+			else
+			{
+				Malloc =			SDL2_FNAPlatform.Malloc;
+				Free =				SDL2.SDL.SDL_free;
+				CreateWindow =			SDL2_FNAPlatform.CreateWindow;
+				DisposeWindow =			SDL2_FNAPlatform.DisposeWindow;
+				ApplyWindowChanges =		SDL2_FNAPlatform.ApplyWindowChanges;
+				ScaleForWindow =		SDL2_FNAPlatform.ScaleForWindow;
+				GetWindowBounds =		SDL2_FNAPlatform.GetWindowBounds;
+				GetWindowResizable =		SDL2_FNAPlatform.GetWindowResizable;
+				SetWindowResizable =		SDL2_FNAPlatform.SetWindowResizable;
+				GetWindowBorderless =		SDL2_FNAPlatform.GetWindowBorderless;
+				SetWindowBorderless =		SDL2_FNAPlatform.SetWindowBorderless;
+				SetWindowTitle =		SDL2_FNAPlatform.SetWindowTitle;
+				IsScreenKeyboardShown =		SDL2_FNAPlatform.IsScreenKeyboardShown;
+				RegisterGame =			SDL2_FNAPlatform.RegisterGame;
+				UnregisterGame =		SDL2_FNAPlatform.UnregisterGame;
+				PollEvents =			SDL2_FNAPlatform.PollEvents;
+				GetGraphicsAdapters =		SDL2_FNAPlatform.GetGraphicsAdapters;
+				GetCurrentDisplayMode =		SDL2_FNAPlatform.GetCurrentDisplayMode;
+				GetKeyFromScancode =		SDL2_FNAPlatform.GetKeyFromScancode;
+				IsTextInputActive =		SDL2_FNAPlatform.IsTextInputActive;
+				StartTextInput =		SDL2_FNAPlatform.StartTextInput;
+				StopTextInput =			SDL2_FNAPlatform.StopTextInput;
+				SetTextInputRectangle =		SDL2_FNAPlatform.SetTextInputRectangle;
+				GetMouseState =			SDL2_FNAPlatform.GetMouseState;
+				SetMousePosition =		SDL2.SDL.SDL_WarpMouseInWindow;
+				OnIsMouseVisibleChanged =	SDL2_FNAPlatform.OnIsMouseVisibleChanged;
+				GetRelativeMouseMode =		SDL2_FNAPlatform.GetRelativeMouseMode;
+				SetRelativeMouseMode =		SDL2_FNAPlatform.SetRelativeMouseMode;
+				GetGamePadCapabilities =	SDL2_FNAPlatform.GetGamePadCapabilities;
+				GetGamePadState =		SDL2_FNAPlatform.GetGamePadState;
+				SetGamePadVibration =		SDL2_FNAPlatform.SetGamePadVibration;
+				SetGamePadTriggerVibration =	SDL2_FNAPlatform.SetGamePadTriggerVibration;
+				GetGamePadGUID =		SDL2_FNAPlatform.GetGamePadGUID;
+				SetGamePadLightBar =		SDL2_FNAPlatform.SetGamePadLightBar;
+				GetGamePadGyro = 		SDL2_FNAPlatform.GetGamePadGyro;
+				GetGamePadAccelerometer =	SDL2_FNAPlatform.GetGamePadAccelerometer;
+				GetStorageRoot =		SDL2_FNAPlatform.GetStorageRoot;
+				GetDriveInfo =			SDL2_FNAPlatform.GetDriveInfo;
+				ReadFileToPointer =		SDL2_FNAPlatform.ReadToPointer;
+				FreeFilePointer =		SDL2_FNAPlatform.FreeFilePointer;
+				ShowRuntimeError =		SDL2_FNAPlatform.ShowRuntimeError;
+				GetMicrophones =		SDL2_FNAPlatform.GetMicrophones;
+				GetMicrophoneSamples =		SDL2_FNAPlatform.GetMicrophoneSamples;
+				GetMicrophoneQueuedBytes =	SDL2_FNAPlatform.GetMicrophoneQueuedBytes;
+				StartMicrophone =		SDL2_FNAPlatform.StartMicrophone;
+				StopMicrophone =		SDL2_FNAPlatform.StopMicrophone;
+				GetTouchCapabilities =		SDL2_FNAPlatform.GetTouchCapabilities;
+				UpdateTouchPanelState =		SDL2_FNAPlatform.UpdateTouchPanelState;
+				GetNumTouchFingers =		SDL2_FNAPlatform.GetNumTouchFingers;
+				SupportsOrientationChanges =	SDL2_FNAPlatform.SupportsOrientationChanges;
+				NeedsPlatformMainLoop = 	SDL2_FNAPlatform.NeedsPlatformMainLoop;
+				RunPlatformMainLoop =		SDL2_FNAPlatform.RunPlatformMainLoop;
+			}
 
 			FNALoggerEXT.Initialize();
 
-			AppDomain.CurrentDomain.ProcessExit += SDL2_FNAPlatform.ProgramExit;
-			TitleLocation = SDL2_FNAPlatform.ProgramInit(args);
+			if (useSDL3)
+			{
+				AppDomain.CurrentDomain.ProcessExit += SDL3_FNAPlatform.ProgramExit;
+				TitleLocation = SDL3_FNAPlatform.ProgramInit(args);
+			}
+			else
+			{
+				AppDomain.CurrentDomain.ProcessExit += SDL2_FNAPlatform.ProgramExit;
+				TitleLocation = SDL2_FNAPlatform.ProgramInit(args);
+			}
 
 			/* Do this AFTER ProgramInit so the platform library
 			 * has a chance to load first!
@@ -264,16 +337,16 @@ ref bool textInputSuppress
 		public delegate Keys GetKeyFromScancodeFunc(Keys scancode);
 		public static readonly GetKeyFromScancodeFunc GetKeyFromScancode;
 
-		public delegate bool IsTextInputActiveFunc();
+		public delegate bool IsTextInputActiveFunc(IntPtr window);
 		public static readonly IsTextInputActiveFunc IsTextInputActive;
 
-		public delegate void StartTextInputFunc();
+		public delegate void StartTextInputFunc(IntPtr window);
 		public static readonly StartTextInputFunc StartTextInput;
 
-		public delegate void StopTextInputFunc();
+		public delegate void StopTextInputFunc(IntPtr window);
 		public static readonly StopTextInputFunc StopTextInput;
 
-		public delegate void SetTextInputRectangleFunc(Rectangle rectangle);
+		public delegate void SetTextInputRectangleFunc(IntPtr window, Rectangle rectangle);
 		public static readonly SetTextInputRectangleFunc SetTextInputRectangle;
 
 		public delegate void GetMouseStateFunc(
@@ -298,10 +371,10 @@ int y
 		public delegate void OnIsMouseVisibleChangedFunc(bool visible);
 		public static readonly OnIsMouseVisibleChangedFunc OnIsMouseVisibleChanged;
 
-		public delegate bool GetRelativeMouseModeFunc();
+		public delegate bool GetRelativeMouseModeFunc(IntPtr window);
 		public static readonly GetRelativeMouseModeFunc GetRelativeMouseMode;
 
-		public delegate void SetRelativeMouseModeFunc(bool enable);
+		public delegate void SetRelativeMouseModeFunc(IntPtr window, bool enable);
 		public static readonly SetRelativeMouseModeFunc SetRelativeMouseMode;
 
 		public delegate GamePadCapabilities GetGamePadCapabilitiesFunc(int index);

src/FNAPlatform/README

@@ -11,8 +11,8 @@ platforms as well as multiple backends for each platform all simultaneously.
 
 That said, if you are adding a new platform, it is extremely likely that you
 will NOT be touching anything in FNA itself! The expectation is that 100% of
-your work will end up in SDL2 and FNA3D. You _might_ add some OSVersion checks
-to SDL2_FNAPlatform.cs, but that should be the only change in the managed code.
+your work will end up in SDL3 and FNA3D. You _might_ add some OSVersion checks
+to SDL3_FNAPlatform.cs, but that should be the only change in the managed code.
 
 If for some reason you REALLY need a new FNAPlatform, the new platforms will add
 code exclusively to this folder. Some interfaces may need to change for new