this must have been in previous commit

engine/ml_videosdl.cpp

@@ -0,0 +1,45 @@
+#include "rendering.h"
+#include "tier0/platform.h"
+#include "tier1/utlvector.h"
+#include "console.h"
+#include "tier1/commandline.h"
+#include "input.h"
+
+#define NS_PRIVATE_IMPLEMENTATION
+#define MTL_PRIVATE_IMPLEMENTATION
+#define MTK_PRIVATE_IMPLEMENTATION
+#define CA_PRIVATE_IMPLEMENTATION
+
+#include "tier0/minmax_off.h"
+#include "Metal/Metal.hpp"
+
+#include "SDL3/SDL.h"
+#include "SDL3/SDL_keycode.h"
+#include "SDL3/SDL_metal.h"
+#include "SDL3/SDL_events.h"
+#include "tier0/minmax.h"
+
+SDL_Window *g_window;
+
+void IInput::SetMouseMode( EMouseMode mode )
+{
+	switch (mode)
+	{
+	case MOUSE_MODE_GAME:
+		SDL_SetWindowRelativeMouseMode(g_window, true);
+		return;
+	default:
+		SDL_SetWindowRelativeMouseMode(g_window, false);
+		return;
+	}
+}
+
+void IVideo::Init()
+{
+	if (!SDL_Init(SDL_INIT_VIDEO | SDL_INIT_EVENTS))
+		V_printf("%s\n",SDL_GetError());
+	g_window = SDL_CreateWindow("rtt", 1280, 720, SDL_WINDOW_VULKAN);
+}	
+void IVideo::Frame( float fDelta )
+{
+}