Add bgfx_backend and bgfx_debug options, fix compile error on mac, nw

src/osd/modules/lib/osdobj_common.cpp

@@ -142,6 +142,8 @@ const options_entry osd_options::s_option_entries[] =
 
     { nullptr,                                nullptr,           OPTION_HEADER, "BGFX POST-PROCESSING OPTIONS" },
     { OSDOPTION_BGFX_PATH,                    "bgfx",            OPTION_STRING, "path to BGFX-related files" },
+    { OSDOPTION_BGFX_BACKEND,                 "auto",            OPTION_STRING, "BGFX backend to use (d3d9, d3d11, metal, opengl, gles)" },
+    { OSDOPTION_BGFX_DEBUG,                   "0",               OPTION_BOOLEAN, "enable BGFX debugging statistics" },
     { OSDOPTION_BGFX_SCREEN_CHAIN,            "hlsl",            OPTION_STRING, "screen chain JSON file to use" },
     { OSDOPTION_BGFX_SHADOW_MASK,             "shadow-mask.png", OPTION_STRING, "shadow mask texture name" },
     { OSDOPTION_BGFX_PRESCALE_X,              "1",               OPTION_INTEGER, "x prescale" },

src/osd/modules/lib/osdobj_common.h

@@ -78,6 +78,8 @@
 #define OSDOPTVAL_NONE                  "none"
 
 #define OSDOPTION_BGFX_PATH             "bgfx_path"
+#define OSDOPTION_BGFX_BACKEND			"bgfx_backend"
+#define OSDOPTION_BGFX_DEBUG			"bgfx_debug"
 #define OSDOPTION_BGFX_SCREEN_CHAIN     "bgfx_screen_chain"
 #define OSDOPTION_BGFX_SHADOW_MASK		"bgfx_shadow_mask"
 #define OSDOPTION_BGFX_PRESCALE_X		"bgfx_prescale_x"
@@ -153,6 +155,8 @@ public:
 
     // BGFX specific options
     const char *bgfx_path() const { return value(OSDOPTION_BGFX_PATH); }
+    const char *bgfx_backend() const { return value(OSDOPTION_BGFX_BACKEND); }
+    const bool bgfx_debug() const { return bool_value(OSDOPTION_BGFX_DEBUG); }
     const char *bgfx_screen_chain() const { return value(OSDOPTION_BGFX_SCREEN_CHAIN); }
     const char *bgfx_shadow_mask() const { return value(OSDOPTION_BGFX_SHADOW_MASK); }
     const uint32_t bgfx_prescale_x() const { return int_value(OSDOPTION_BGFX_PRESCALE_X); }

src/osd/modules/render/drawbgfx.cpp

@@ -108,6 +108,7 @@ int renderer_bgfx::create()
 {
 	// create renderer
 
+    osd_options& options = downcast<osd_options &>(window().machine().options());
 	osd_dim wdim = window().get_size();
 	m_width[window().m_index] = wdim.width();
 	m_height[window().m_index] = wdim.height();
@@ -130,14 +131,43 @@ int renderer_bgfx::create()
 #else
 		bgfx::sdlSetWindow(window().sdl_window());
 #endif
-		bgfx::init();
+		std::string backend(options.bgfx_backend());
+		printf("1\n"); fflush(stdout);
+		if (backend == "auto")
+		{
+			bgfx::init();
+		}
+		else if (backend == "dx9" || backend == "d3d9")
+		{
+			bgfx::init(bgfx::RendererType::Direct3D9);
+		}
+		else if (backend == "dx11" || backend == "d3d11")
+		{
+			bgfx::init(bgfx::RendererType::Direct3D11);
+		}
+		else if (backend == "gles")
+		{
+			bgfx::init(bgfx::RendererType::OpenGLES);
+		}
+		else if (backend == "glsl" || backend == "opengl")
+		{
+			bgfx::init(bgfx::RendererType::OpenGL);
+		}
+		else if (backend == "metal")
+		{
+			bgfx::init(bgfx::RendererType::Metal);
+		}
+		else
+		{
+			osd_printf_verbose("Unknown backend type '%s'\n", backend.c_str());
+			assert(false);
+		}
 		bgfx::reset(m_width[window().m_index], m_height[window().m_index], video_config.waitvsync ? BGFX_RESET_VSYNC : BGFX_RESET_NONE);
 		// Enable debug text.
-		bgfx::setDebug(window().machine().options().verbose() ? BGFX_DEBUG_STATS : BGFX_DEBUG_TEXT);
+		bgfx::setDebug(options.bgfx_debug() ? BGFX_DEBUG_STATS : BGFX_DEBUG_TEXT);
 		m_dimensions = osd_dim(m_width[0], m_height[0]);
 	}
 
-    osd_options& options = downcast<osd_options &>(window().machine().options());
 	m_textures = new texture_manager();
 	m_targets = new target_manager(*m_textures);
 

src/osd/sdl/window.cpp

@@ -90,8 +90,6 @@ sdl_window_info *sdl_window_list;
 static sdl_window_info **last_window_ptr;
 
 // event handling
-static osd_work_queue *work_queue;
-
 static SDL_threadID main_threadid;
 static SDL_threadID window_threadid;