Some bugfixes for BGFX on SDL, nw

src/osd/modules/lib/osdobj_common.cpp

@@ -554,7 +554,6 @@ bool osd_common_t::font_get_bitmap(osd_font *font, unicode_char chnum, bitmap_ar
 
 slider_state* osd_common_t::get_slider_list()
 {
-	printf("Core get_slider_list\n");
 	return nullptr;
 }
 

src/osd/modules/lib/osdobj_common.h

@@ -244,6 +244,9 @@ protected:
 	virtual bool input_init();
 	virtual void input_pause();
 
+	virtual void build_slider_list() { }
+	virtual void update_slider_list() { }
+
 private:
 	// internal state
 	running_machine *   m_machine;

src/osd/modules/render/drawbgfx.cpp

@@ -732,7 +732,7 @@ int renderer_bgfx::draw(int update)
 #ifdef OSD_WINDOWS
 			m_framebuffer = m_targets->create_backbuffer(window().m_hwnd, m_width[window_index], m_height[window_index]);
 #else
-			m_framebuffer = m_targets->create_backbuffer(sdlNativeWindowHandle(window().sdl_window()), m_width[index], m_height[index]);
+			m_framebuffer = m_targets->create_backbuffer(sdlNativeWindowHandle(window().sdl_window()), m_width[window_index], m_height[window_index]);
 #endif
 			bgfx::setViewFrameBuffer(view_index, m_framebuffer->target());
 			m_dimensions = osd_dim(m_width[window_index], m_height[window_index]);

src/osd/sdl/osdsdl.h

@@ -142,6 +142,9 @@ public:
 	virtual void init(running_machine &machine) override;
 	virtual void update(bool skip_redraw) override;
 
+	// video overridables
+	virtual slider_state *get_slider_list() override;
+
 	// input overridables
 	virtual void customize_input_type_list(simple_list<input_type_entry> &typelist) override;
 
@@ -173,6 +176,10 @@ public:
 
 	sdl_options &options() { return m_options; }
 
+protected:
+	virtual void build_slider_list() override;
+	virtual void update_slider_list() override;
+
 private:
 	virtual void osd_exit() override;
 
@@ -181,7 +188,7 @@ private:
 	sdl_options &m_options;
 
 	watchdog *m_watchdog;
-
+	slider_state *      m_sliders;
 };
 
 //============================================================

src/osd/sdl/video.cpp

@@ -140,6 +140,60 @@ float osd_monitor_info::aspect()
 
 
 
+//============================================================
+//  update_slider_list
+//============================================================
+
+void sdl_osd_interface::update_slider_list()
+{
+	for (sdl_window_info *window = sdl_window_list; window != nullptr; window = window->m_next)
+	{
+		if (window->renderer().sliders_dirty())
+		{
+			build_slider_list();
+			return;
+		}
+	}
+}
+
+//============================================================
+//  get_slider_list
+//============================================================
+
+slider_state *sdl_osd_interface::get_slider_list()
+{
+	return m_sliders;
+}
+
+//============================================================
+//  build_slider_list
+//============================================================
+
+void sdl_osd_interface::build_slider_list()
+{
+	m_sliders = nullptr;
+	slider_state *curr = m_sliders;
+	for (sdl_window_info *info = sdl_window_list; info != nullptr; info = info->m_next)
+	{
+        slider_state *window_sliders = info->renderer().get_slider_list();
+		if (window_sliders != nullptr)
+		{
+			if (m_sliders == nullptr)
+			{
+				m_sliders = window_sliders;
+                curr = m_sliders;
+			}
+			else
+			{
+				while (curr->next != nullptr)
+				{
+					curr = curr->next;
+				}
+				curr->next = window_sliders;
+			}
+		}
+	}
+}
 
 //============================================================
 //  update
@@ -152,6 +206,8 @@ void sdl_osd_interface::update(bool skip_redraw)
 	if (m_watchdog != NULL)
 		m_watchdog->reset();
 
+	update_slider_list();
+
 	// if we're not skipping this redraw, update all windows
 	if (!skip_redraw)
 	{

src/osd/sdl/window.h

@@ -87,6 +87,7 @@ public:
 
 	osd_dim blit_surface_size() override;
 	int prescale() const { return m_prescale; }
+    osd_renderer &renderer() const { return *m_renderer; }
 
 	// Pointer to next window
 	sdl_window_info *   m_next;
@@ -122,8 +123,7 @@ private:
 	}
 
 	static OSDWORK_CALLBACK( complete_create_wt );
-protected:
+
-	osd_renderer &renderer() { return *m_renderer; }
 private:
 	int wnd_extra_width();
 	int wnd_extra_height();

src/osd/windows/winmain.h

@@ -298,10 +298,12 @@ public:
 
     int window_count();
 
+protected:
+	virtual void build_slider_list() override;
+	virtual void update_slider_list() override;
+
 private:
 	virtual void osd_exit() override;
-	void build_slider_list();
-	void update_slider_list();
 
 	windows_options &   m_options;
 	slider_state *      m_sliders;