Fix some more build issues after c69de2ba4

Fixes #20301.

platform/haiku/os_haiku.cpp

@@ -80,6 +80,10 @@ const char *OS_Haiku::get_video_driver_name(int p_driver) const {
 	return "GLES3";
 }
 
+int OS_Haiku::get_current_video_driver() const {
+	return video_driver_index;
+}
+
 Error OS_Haiku::initialize(const VideoMode &p_desired, int p_video_driver, int p_audio_driver) {
 	main_loop = NULL;
 	current_video_mode = p_desired;
@@ -124,6 +128,8 @@ Error OS_Haiku::initialize(const VideoMode &p_desired, int p_video_driver, int p
 	}
 	*/
 
+	video_driver_index = p_video_driver;
+
 	input = memnew(InputDefault);
 	window->SetInput(input);
 

platform/haiku/os_haiku.h

@@ -51,6 +51,7 @@ private:
 	Rasterizer *rasterizer;
 	VisualServer *visual_server;
 	VideoMode current_video_mode;
+	int video_driver_index;
 	PowerHaiku *power_manager;
 
 #ifdef MEDIA_KIT_ENABLED
@@ -66,6 +67,7 @@ private:
 protected:
 	virtual int get_video_driver_count() const;
 	virtual const char *get_video_driver_name(int p_driver) const;
+	virtual int get_current_video_driver() const;
 
 	virtual Error initialize(const VideoMode &p_desired, int p_video_driver, int p_audio_driver);
 	virtual void finalize();

platform/server/os_server.h

@@ -47,7 +47,6 @@
 
 class OS_Server : public OS_Unix {
 
-	//Rasterizer *rasterizer;
 	VisualServer *visual_server;
 	VideoMode current_videomode;
 	List<String> args;
@@ -73,7 +72,7 @@ class OS_Server : public OS_Unix {
 protected:
 	virtual int get_video_driver_count() const;
 	virtual const char *get_video_driver_name(int p_driver) const;
-
+	virtual int get_current_video_driver() const;
 	virtual int get_audio_driver_count() const;
 	virtual const char *get_audio_driver_name(int p_driver) const;
 
@@ -86,8 +85,6 @@ protected:
 public:
 	virtual String get_name();
 
-	virtual int get_current_video_driver() const;
-
 	virtual void set_cursor_shape(CursorShape p_shape);
 	virtual void set_custom_mouse_cursor(const RES &p_cursor, CursorShape p_shape, const Vector2 &p_hotspot);
 

platform/uwp/os_uwp.cpp

@@ -77,6 +77,10 @@ Size2 OSUWP::get_window_size() const {
 	return size;
 }
 
+int OSUWP::get_current_video_driver() const {
+	return video_driver_index;
+}
+
 void OSUWP::set_window_size(const Size2 p_size) {
 
 	Windows::Foundation::Size new_size;
@@ -237,6 +241,8 @@ Error OSUWP::initialize(const VideoMode &p_desired, int p_video_driver, int p_au
 	}
 	gl_context->set_use_vsync(vm.use_vsync);
 
+	video_driver_index = p_video_driver;
+
 	visual_server = memnew(VisualServerRaster);
 	// FIXME: Reimplement threaded rendering? Or remove?
 	/*

platform/uwp/os_uwp.h

@@ -99,6 +99,7 @@ private:
 	Windows::UI::Core::CoreWindow ^ window;
 
 	VideoMode video_mode;
+	int video_driver_index;
 
 	MainLoop *main_loop;
 
@@ -154,6 +155,7 @@ private:
 	// functions used by main to initialize/deintialize the OS
 protected:
 	virtual int get_video_driver_count() const;
+	virtual int get_current_video_driver() const;
 
 	virtual void initialize_core();
 	virtual Error initialize(const VideoMode &p_desired, int p_video_driver, int p_audio_driver);

platform/x11/os_x11.h

@@ -196,6 +196,8 @@ class OS_X11 : public OS_Unix {
 	Bool xrandr_ext_ok;
 
 protected:
+	virtual int get_current_video_driver() const;
+
 	virtual void initialize_core();
 	virtual Error initialize(const VideoMode &p_desired, int p_video_driver, int p_audio_driver);
 	virtual void finalize();
@@ -207,8 +209,6 @@ protected:
 	bool is_window_maximize_allowed();
 
 public:
-	virtual int get_current_video_driver() const;
-
 	virtual String get_name();
 
 	virtual void set_cursor_shape(CursorShape p_shape);