[GTK3] Somewhat working GtkDrawingArea fallback

gtk3/main.c

@@ -39,8 +39,10 @@ static void run(GApplication *app, UserData *user_data);
 static GtkApplication *main_application;
 static GtkBuilder *builder;
 static GtkGLArea *gl_area;
+static GtkDrawingArea *fallback_canvas;
 
 static GtkApplicationWindow *main_window;
+static GtkBox *main_window_container;
 static GtkWindow *preferences;
 static GtkWindow *vram_viewer;
 static GtkWindow *memory_viewer;
@@ -54,6 +56,8 @@ static GB_gameboy_t gb;
 static uint32_t *image_buffers[3];
 static unsigned char current_buffer;
 
+static bool supports_gl;
+
 static bool paused = false;
 static bool underclock_down = false, rewind_down = false, do_rewind = false, rewind_paused = false, turbo_down = false;
 static double clock_mutliplier = 1.0;
@@ -69,7 +73,7 @@ static const size_t tilemap_buffer_length = 256 * 256 * 4;
 static uint32_t tilemap_buffer[tilemap_buffer_length] = {0};
 
 static unsigned char number_of_buffers(void) {
-	bool should_blend = true;
+	bool should_blend = !fallback_canvas;
 
 	return should_blend? 3 : 2;
 }
@@ -122,7 +126,12 @@ static void vblank(GB_gameboy_t *gb) {
 	GB_set_pixels_output(gb, get_pixels());
 
 	// Queue drawing of the current frame
-	gtk_gl_area_queue_render(gl_area);
+	if (fallback_canvas) {
+		gtk_widget_queue_draw(GTK_WIDGET(main_window));
+	}
+	else if (gl_area) {
+		gtk_gl_area_queue_render(gl_area);
+	}
 	
 	if (vram_viewer_visible) {
 		// TODO: Only update what is needed
@@ -135,8 +144,10 @@ static void vblank(GB_gameboy_t *gb) {
 }
 
 static void update_viewport(void) {
-	int win_width  = gtk_widget_get_allocated_width(GTK_WIDGET(gl_area));
+	GtkWidget *w = fallback_canvas ? GTK_WIDGET(fallback_canvas) : GTK_WIDGET(gl_area);
-	int win_height = gtk_widget_get_allocated_height(GTK_WIDGET(gl_area));
+
+	int win_width  = gtk_widget_get_allocated_width(w);
+	int win_height = gtk_widget_get_allocated_height(w);
 
 	double x_factor = win_width  / (double) GB_get_screen_width(&gb);
 	double y_factor = win_height / (double) GB_get_screen_height(&gb);
@@ -165,7 +176,7 @@ static void update_viewport(void) {
 		new_height
 	};
 
-	glViewport(rect.x, rect.y, rect.w, rect.h);
+	if (!fallback_canvas) glViewport(rect.x, rect.y, rect.w, rect.h);
 }
 
 // Determines if a ComboBox entry should be converted into a separator.
@@ -199,22 +210,6 @@ static void set_combo_box_row_separator_func(GtkContainer *container) {
 	g_list_free_full(list, NULL);
 }
 
-// Returns true if the application should show a menubar
-static gboolean show_menubar(void) {
-	switch (get_show_menubar()) {
-		case MENUBAR_AUTO: {
-			GtkSettings *settings = gtk_settings_get_default();
-			gboolean result;
-
-			g_object_get(settings, "gtk-shell-shows-menubar", &result, NULL);
-
-			return result;
-		}
-		case MENUBAR_SHOW: return true;
-		case MENUBAR_HIDE: return false;
-	}
-}
-
 // Returns a `GApplication`s `GMenuModel` by ID
 // GApplication menus are loaded from `gtk/menus.ui`, `gtk/menus-traditional.ui` and `gtk/menus-common.ui`.
 static GMenuModel *get_menu_model(GApplication *app, const char *id) {
@@ -332,32 +327,86 @@ G_MODULE_EXPORT void on_show_window(GtkWidget *w, gpointer window) {
 	gtk_widget_show_all(GTK_WIDGET(window));
 }
 
-G_MODULE_EXPORT void gl_init() {
+G_MODULE_EXPORT gboolean on_draw_fallback(GtkWidget *widget, cairo_t *cr, gpointer data) {
-	const char *renderer;
+	GtkStyleContext *context = gtk_widget_get_style_context(widget);
+	guint width = gtk_widget_get_allocated_width(widget);
+	guint height = gtk_widget_get_allocated_height(widget);
 
-	gtk_gl_area_make_current(gl_area);
+	guint screen_width = GB_get_screen_width(&gb);
-	if (gtk_gl_area_get_error(gl_area) != NULL) {
+	guint screen_height = GB_get_screen_height(&gb);
-		return;
-	}
 
-	renderer = (char *) glGetString(GL_RENDERER);
+	gtk_render_background(context, cr, 0, 0, width, height);
-	g_print("GtkGLArea on %s\n", renderer ? renderer : "Unknown");
+	
+	cairo_surface_t *surface = cairo_image_surface_create_for_data(
+		(unsigned char *) get_current_buffer(),
+		CAIRO_FORMAT_RGB24,
+		screen_width,
+		screen_height,
+		cairo_format_stride_for_width(CAIRO_FORMAT_RGB24, screen_width)
+	);
 
-	if (config.shader == NULL || !init_shader_with_name(&shader, config.shader)) {
+	cairo_translate(cr, rect.x, rect.y);
-		init_shader_with_name(&shader, "NearestNeighbor");
+	cairo_scale(cr, rect.w / screen_width, rect.h / screen_height);
-	}
+	cairo_set_source_surface(cr, surface, 0, 0);
+	cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_NEAREST);
+	cairo_paint(cr);
+
+	return FALSE;
 }
 
-G_MODULE_EXPORT void gl_resize() {
+G_MODULE_EXPORT void resize() {
 	update_viewport();
 }
 
+static void create_fallback_canvas(void) {
+	fallback_canvas = GTK_DRAWING_AREA(gtk_drawing_area_new());
+	g_signal_connect(fallback_canvas, "draw", G_CALLBACK(on_draw_fallback), NULL);
+	g_signal_connect(fallback_canvas, "size-allocate", G_CALLBACK(resize), NULL);
+	gtk_box_pack_end(GTK_BOX(main_window_container), GTK_WIDGET(fallback_canvas), TRUE, TRUE, 0);
+}
+
 G_MODULE_EXPORT void gl_draw() {
 	render_texture(get_current_buffer(), get_previous_buffer());
 }
 
 G_MODULE_EXPORT void gl_finish() { }
 
+G_MODULE_EXPORT void gl_init(GtkWidget *w) {
+	GtkGLArea *gl_area = GTK_GL_AREA(w);
+
+	g_print("GL_INIT\n");
+	const char *renderer;
+
+	g_print("GL Context: %p\n", gtk_gl_area_get_context(gl_area));
+
+	gtk_gl_area_make_current(gl_area);
+	
+	if (gtk_gl_area_get_error(gl_area) != NULL) {
+		goto error;
+	}
+
+	renderer = (char *)glGetString(GL_RENDERER);
+	g_print("GtkGLArea on %s\n", renderer ? renderer : "Unknown");
+
+	if (config.shader == NULL || !init_shader_with_name(&shader, config.shader) || !init_shader_with_name(&shader, "NearestNeighbor")) {
+		GError *error = g_error_new_literal(g_quark_from_string("sameboy-gl-error"), 1, "Failed to initialize shaders");
+		gtk_gl_area_set_error(gl_area, error);
+	}
+	else {
+		g_signal_connect(gl_area, "render",    G_CALLBACK(gl_draw), NULL);
+		g_signal_connect(gl_area, "resize",    G_CALLBACK(resize), NULL);
+		g_signal_connect(gl_area, "unrealize", G_CALLBACK(gl_finish), NULL);
+		return;
+	}
+
+	error:
+		if (gtk_gl_area_get_error(gl_area) != NULL) {
+			g_printerr("GtkGLArea: %s\n", gtk_gl_area_get_error(gl_area)->message);
+		}
+
+		create_fallback_canvas();
+}
+
 G_MODULE_EXPORT void on_vram_viewer_realize() {
 	vram_viewer_visible = true;
 }
@@ -390,7 +439,7 @@ G_MODULE_EXPORT gboolean on_draw_vram_viewer_tileset(GtkWidget *widget, cairo_t
 	return FALSE;
 }
 
-G_MODULE_EXPORT gboolean on_vram_viewer_tilemap(GtkWidget *widget, cairo_t *cr, gpointer data) {
+G_MODULE_EXPORT gboolean on_draw_vram_viewer_tilemap(GtkWidget *widget, cairo_t *cr, gpointer data) {
 	guint width, height;
 	GtkStyleContext *context;
 
@@ -497,10 +546,133 @@ G_MODULE_EXPORT void on_color_menubar_override_changed(GtkWidget *w, gpointer us
 	config.menubar_override = (gchar *)gtk_combo_box_get_active_id(GTK_COMBO_BOX(w));
 }
 
+static void setup_menu(GApplication *app) {
+	GMenuModel *menubar_model = get_menu_model(app, "menubar");
+	enum menubar_type_t menubar_type = get_show_menubar();
+
+	// Try to use a sane default
+	if (menubar_type == MENUBAR_AUTO) {
+		GtkSettings *settings = gtk_settings_get_default();
+		gboolean show_in_shell;
+		g_object_get(settings, "gtk-shell-shows-menubar", &show_in_shell, NULL);
+
+		const gchar *xdg_current_desktop = g_getenv("XDG_CURRENT_DESKTOP");
+		const gchar *gdm_session = g_getenv("GDMSESSION");
+		const gchar *desktop_session = g_getenv("DESKTOP_SESSION");
+		
+		gchar *desktop = (gchar *)xdg_current_desktop;
+		if (desktop == NULL || g_str_equal(desktop, "")) desktop = (gchar *)gdm_session;
+		if (desktop == NULL || g_str_equal(desktop, "")) desktop = (gchar *)desktop_session;
+
+		g_print("XDG_CURRENT_DESKTOP: %s\nGDMSESSION: %s\nDESKTOP_SESSION: %s\nChosen value: %s\nShow menu in shell: %d\n", xdg_current_desktop, gdm_session, desktop_session, desktop, show_in_shell);
+
+		if (desktop != NULL && show_in_shell) {
+			menubar_type = MENUBAR_SHOW_IN_SHELL;
+		}
+		else if (desktop != NULL && g_str_match_string("GNOME", desktop, FALSE)) {
+			if (g_str_match_string("GNOME-Flashback", desktop, FALSE) || g_str_match_string("GNOME-Classic", desktop, FALSE)) {
+				menubar_type = MENUBAR_SHOW_IN_WINDOW;
+			}
+			else if (gdm_session != NULL && (g_str_match_string("gnome-classic", gdm_session, FALSE) || g_str_match_string("gnome-flashback", gdm_session, FALSE))) {
+				menubar_type = MENUBAR_SHOW_IN_WINDOW;
+			}
+			else {
+				menubar_type = MENUBAR_SHOW_HAMBURGER;
+			}
+		}
+		else {
+			menubar_type = MENUBAR_SHOW_IN_WINDOW;
+		}
+	}
+
+	switch (menubar_type) {
+		case MENUBAR_AUTO:
+			g_error("Unreachable\n");
+			break;
+
+		case MENUBAR_SHOW_IN_SHELL:
+			g_print("Showing menu in the shell\n");
+			gtk_application_set_menubar(GTK_APPLICATION(app), menubar_model);
+			break;
+
+		case MENUBAR_SHOW_IN_WINDOW: {
+			g_print("Showing menu in the window\n");
+			GtkMenuBar *menubar = GTK_MENU_BAR(gtk_menu_bar_new_from_model(menubar_model));
+			gtk_box_pack_start(GTK_BOX(main_window_container), GTK_WIDGET(menubar), FALSE, FALSE, 0);
+			break;
+		}
+
+		case MENUBAR_SHOW_HAMBURGER: {
+			g_print("Showing hamburger\n");
+			// Attach a custom title bar
+			GtkWidget *titlebar = gtkget(GTK_WIDGET, "main_header_bar");
+			gtk_window_set_titlebar(GTK_WINDOW(main_window), titlebar);
+
+			// Disable menubar
+			gtk_application_set_menubar(GTK_APPLICATION(app), NULL);
+
+			// Hook menubar up to the hamburger button
+			GtkMenuButton *hamburger_button = GTK_MENU_BUTTON(get_object("hamburger_button"));
+			gtk_menu_button_set_menu_model(hamburger_button, menubar_model);
+			break;
+		}
+	}
+}
+
+G_MODULE_EXPORT void gl_check_realize(GtkWidget *w, gpointer user_data_gptr) {
+	gboolean *result = (gboolean *) user_data_gptr;
+
+	GError *error = NULL;
+	GdkWindow *gdk_window = gtk_widget_get_window(w);
+	GdkGLContext *context = gdk_window_create_gl_context(gdk_window, &error);
+
+	if (error != NULL) {
+		g_printerr("Failed to create context: %s\n", error->message);
+		g_error_free(error);
+		*result = FALSE;
+	}
+	else {
+		gdk_gl_context_make_current(context);
+		int version = epoxy_gl_version();
+		
+		g_object_run_dispose(G_OBJECT(context));
+		g_object_unref(context);
+		context = NULL;
+
+		gdk_gl_context_clear_current();
+
+		g_print("OpenGL version: %d\n", version);
+
+		*result = version >= 32;
+	}
+}
+
+gboolean test_gl_support(void) {
+	gboolean result = FALSE;
+
+	gtk_init(NULL, NULL);
+	GtkWidget *window  = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+	g_signal_connect(window, "realize", G_CALLBACK(gl_check_realize), &result);
+	gtk_widget_realize(window);
+	gtk_widget_destroy(window);
+	window = NULL;
+
+	return result;
+}
+
 // This functions gets called immediately after registration of the GApplication
 static void startup(GApplication *app, gpointer user_data_gptr) {
 	UserData *user_data = user_data_gptr;
 
+	// Very ugly workaround for GtkGlArea!
+	// When a GtkGlArea is realized and it creates a legacy GL 1.4 context
+	// it tries to use GL 2.0 functions to render the window which leads to the application crashing.
+	// So we initialize GTK, create a dummy GtkWindow object, attach a `realize` callback and
+	// in this callback create a GdkGLContext on this window. But instead of running the GTK main loop
+	// we just realize and destroy the dummy window and compare the context’s version in the realize callback.
+	supports_gl = test_gl_support();
+	g_print("OpenGL supported: %s\n", supports_gl? "Yes" : "No");
+
 	builder = gtk_builder_new_from_resource(RESOURCE_PREFIX "ui/window.ui");
 	gtk_builder_connect_signals(builder, NULL);
 
@@ -529,65 +701,19 @@ static void startup(GApplication *app, gpointer user_data_gptr) {
 
 	// setup main window
 	main_window = GTK_APPLICATION_WINDOW(gtk_application_window_new(GTK_APPLICATION(app)));
-	gtk_application_window_set_show_menubar(main_window, false);
+	main_window_container = GTK_BOX(gtk_box_new(GTK_ORIENTATION_VERTICAL, 0));
 
-	// create our renderer area
+	gtk_window_set_title(GTK_WINDOW(main_window), "SameBoy");
-	gl_area = GTK_GL_AREA(gtk_gl_area_new());
+	gtk_application_window_set_show_menubar(main_window, false);
-	gtk_gl_area_set_auto_render(gl_area, false);
+	gtk_container_add(GTK_CONTAINER(main_window), GTK_WIDGET(main_window_container));
+
+	setup_menu(app);
 
 	// Insert separators into `GtkComboBox`es
 	set_combo_box_row_separator_func(GTK_CONTAINER(preferences));
 	set_combo_box_row_separator_func(GTK_CONTAINER(vram_viewer));
 	set_combo_box_row_separator_func(GTK_CONTAINER(memory_viewer));
 
-	// Connect signal handlers
-	gtk_widget_add_events(GTK_WIDGET(main_window), GDK_KEY_PRESS_MASK);
-	gtk_widget_add_events(GTK_WIDGET(main_window), GDK_KEY_RELEASE_MASK);
-	g_signal_connect(main_window, "key_press_event", G_CALLBACK(on_key_press), NULL);
-	g_signal_connect(main_window, "key_release_event", G_CALLBACK(on_key_press), NULL);
-
-	g_signal_connect(gl_area, "realize",   G_CALLBACK(gl_init), NULL);
-	g_signal_connect(gl_area, "render",    G_CALLBACK(gl_draw), NULL);
-	g_signal_connect(gl_area, "resize",    G_CALLBACK(gl_resize), NULL);
-	g_signal_connect(gl_area, "unrealize", G_CALLBACK(gl_finish), NULL);
-	
-	g_signal_connect(vram_viewer, "realize",   G_CALLBACK(on_vram_viewer_realize), NULL);
-	g_signal_connect(vram_viewer, "unrealize", G_CALLBACK(on_vram_viewer_unrealize), NULL);
-
-	// Just hide our sub-windows when closing them
-	g_signal_connect(preferences,   "delete-event", G_CALLBACK(gtk_widget_hide_on_delete), NULL);
-	g_signal_connect(vram_viewer,   "delete-event", G_CALLBACK(gtk_widget_hide_on_delete), NULL);
-	g_signal_connect(memory_viewer, "delete-event", G_CALLBACK(gtk_widget_hide_on_delete), NULL);
-	g_signal_connect(console,       "delete-event", G_CALLBACK(gtk_widget_hide_on_delete), NULL);
-	g_signal_connect(printer,       "delete-event", G_CALLBACK(gtk_widget_hide_on_delete), NULL);
-	
-	g_signal_connect(get_object("vram_viewer_tileset_canvas"), "draw", G_CALLBACK(on_draw_vram_viewer_tileset), NULL);
-	g_signal_connect(get_object("vram_viewer_tilemap_canvas"), "draw", G_CALLBACK(on_vram_viewer_tilemap), NULL);
-	
-	gtk_container_add(GTK_CONTAINER(main_window), GTK_WIDGET(gl_area));
-
-	// Handle the whole menubar situation …
-	GMenuModel *menubar = get_menu_model(app, "menubar");
-
-	if (show_menubar()) {
-		// Show a classic menubar
-		gtk_application_set_menubar(GTK_APPLICATION(app), menubar);
-	}
-	else {
-		// Attach a custom title bar
-		GtkWidget *titlebar = gtkget(GTK_WIDGET, "main_header_bar");
-		gtk_window_set_titlebar(GTK_WINDOW(main_window), titlebar);
-
-		// Disable menubar
-		gtk_application_set_menubar(GTK_APPLICATION(app), NULL);
-
-		// Hook menubar up to the hamburger button
-		GtkMenuButton *hamburger_button = GTK_MENU_BUTTON(get_object("hamburger_button"));
-		gtk_menu_button_set_menu_model(hamburger_button, menubar);
-	}
-
-	gtk_window_set_title(GTK_WINDOW(main_window), "SameBoy");
-
 	// Define a set of window icons
 	GList *icon_list = NULL;
 	static char* icons[] = {
@@ -625,7 +751,41 @@ static void activate(GApplication *app, gpointer user_data_gptr) {
 		gtk_window_fullscreen(GTK_WINDOW(main_window));
 	}
 
+	// Connect signal handlers
+	gtk_widget_add_events(GTK_WIDGET(main_window), GDK_KEY_PRESS_MASK);
+	gtk_widget_add_events(GTK_WIDGET(main_window), GDK_KEY_RELEASE_MASK);
+
 	g_signal_connect(main_window, "destroy", G_CALLBACK(on_quit), app);
+	g_signal_connect(main_window, "key_press_event", G_CALLBACK(on_key_press), NULL);
+	g_signal_connect(main_window, "key_release_event", G_CALLBACK(on_key_press), NULL);
+	
+	g_signal_connect(vram_viewer, "realize",   G_CALLBACK(on_vram_viewer_realize), NULL);
+	g_signal_connect(vram_viewer, "unrealize", G_CALLBACK(on_vram_viewer_unrealize), NULL);
+
+	// Just hide our sub-windows when closing them
+	g_signal_connect(preferences,   "delete-event", G_CALLBACK(gtk_widget_hide_on_delete), NULL);
+	g_signal_connect(vram_viewer,   "delete-event", G_CALLBACK(gtk_widget_hide_on_delete), NULL);
+	g_signal_connect(memory_viewer, "delete-event", G_CALLBACK(gtk_widget_hide_on_delete), NULL);
+	g_signal_connect(console,       "delete-event", G_CALLBACK(gtk_widget_hide_on_delete), NULL);
+	g_signal_connect(printer,       "delete-event", G_CALLBACK(gtk_widget_hide_on_delete), NULL);
+	
+	g_signal_connect(get_object("vram_viewer_tileset_canvas"), "draw", G_CALLBACK(on_draw_vram_viewer_tileset), NULL);
+	g_signal_connect(get_object("vram_viewer_tilemap_canvas"), "draw", G_CALLBACK(on_draw_vram_viewer_tilemap), NULL);
+
+	// create our renderer area
+	if (supports_gl) {
+		gl_area = GTK_GL_AREA(gtk_gl_area_new());
+		gtk_gl_area_set_required_version(gl_area, 3, 2);
+		gtk_gl_area_set_auto_render(gl_area, false);
+		gtk_gl_area_set_has_alpha(gl_area, false);
+		gtk_gl_area_set_has_depth_buffer(gl_area, false);
+		gtk_gl_area_set_has_stencil_buffer(gl_area, false);
+		g_signal_connect(gl_area, "realize", G_CALLBACK(gl_init), NULL);
+		gtk_box_pack_end(GTK_BOX(main_window_container), GTK_WIDGET(gl_area), TRUE, TRUE, 0);
+	}
+	else {
+		create_fallback_canvas();
+	}
 
 	gtk_application_add_window(GTK_APPLICATION(app), GTK_WINDOW(main_window));
 	gtk_widget_show_all(GTK_WIDGET(main_window));
@@ -741,6 +901,18 @@ static uint32_t rgb_encode(GB_gameboy_t *gb, uint8_t r, uint8_t g, uint8_t b) {
 	return color;
 }
 
+static uint32_t rgb_encode_fallback(GB_gameboy_t *gb, uint8_t r, uint8_t g, uint8_t b) {
+#ifdef GB_LITTLE_ENDIAN
+	// ARGB
+	uint32_t color = 0xFF000000 | (r << 16) | (g << 8) | b;
+#else
+	// BGRA
+	uint32_t color = (b << 24) | (g << 16) | (r << 8) | 0xFF;
+#endif
+	
+	return color;
+}
+
 static void update_window_geometry() {
 	// Set size hints
 	GdkGeometry hints;
@@ -793,7 +965,7 @@ static void run(GApplication *app, UserData *user_data) {
 
 		GB_set_vblank_callback(&gb, (GB_vblank_callback_t) vblank);
 		GB_set_pixels_output(&gb, get_current_buffer());
-		GB_set_rgb_encode_callback(&gb, rgb_encode);
+		GB_set_rgb_encode_callback(&gb, fallback_canvas? rgb_encode_fallback : rgb_encode);
 		// GB_set_sample_rate(&gb, have_aspec.freq);
 		GB_set_color_correction_mode(&gb, get_color_correction_mode());
 		GB_set_highpass_filter_mode(&gb, get_highpass_mode());

gtk3/settings.c

@@ -190,17 +190,20 @@ void update_boot_rom_selector(GtkBuilder *builder) {
 	gtk_combo_box_text_append(combo_box, "other", "Other");
 }
 
-enum menubar_override get_show_menubar(void) {
+enum menubar_type_t get_show_menubar(void) {
 	if (config.menubar_override == NULL) goto default_value;
 
 	if (g_strcmp0(config.menubar_override, "auto") == 0) {
 		return MENUBAR_AUTO;
 	}
-	else if (g_strcmp0(config.menubar_override, "show") == 0) {
+	else if (g_strcmp0(config.menubar_override, "show_in_shell") == 0) {
-		return MENUBAR_SHOW;
+		return MENUBAR_SHOW_IN_SHELL;
 	}
-	else if (g_strcmp0(config.menubar_override, "hide") == 0) {
+	else if (g_strcmp0(config.menubar_override, "show_in_window") == 0) {
-		return MENUBAR_HIDE;
+		return MENUBAR_SHOW_IN_WINDOW;
+	}
+	else if (g_strcmp0(config.menubar_override, "show_hamburger") == 0) {
+		return MENUBAR_SHOW_HAMBURGER;
 	}
 
 	// This should not happen
@@ -208,16 +211,19 @@ enum menubar_override get_show_menubar(void) {
 	default_value: return MENUBAR_AUTO;
 }
 
-void set_show_menubar(enum menubar_override value) {
+void set_show_menubar(enum menubar_type_t value) {
 	switch (value) {
 		case MENUBAR_AUTO:
 			config.menubar_override = "auto";
 			break;
-		case MENUBAR_SHOW:
+		case MENUBAR_SHOW_IN_SHELL:
-			config.menubar_override = "show";
+			config.menubar_override = "show_in_shell";
 			break;
-		case MENUBAR_HIDE:
+		case MENUBAR_SHOW_IN_WINDOW:
-			config.menubar_override = "hide";
+			config.menubar_override = "show_in_window";
+			break;
+		case MENUBAR_SHOW_HAMBURGER:
+			config.menubar_override = "show_hamburger";
 			break;
 	}
 }

gtk3/settings.h

@@ -58,10 +58,11 @@ typedef struct config_t {
 #undef EXPAND_GROUP_MEMBER
 } config_t;
 
-enum menubar_override {
+enum menubar_type_t {
 	MENUBAR_AUTO,
-	MENUBAR_SHOW,
+	MENUBAR_SHOW_IN_SHELL,
-	MENUBAR_HIDE
+	MENUBAR_SHOW_IN_WINDOW,
+	MENUBAR_SHOW_HAMBURGER
 };
 
 gchar* settings_file_path;
@@ -80,8 +81,8 @@ void free_settings(void);
 
 void update_boot_rom_selector(GtkBuilder *builder);
 
-enum menubar_override get_show_menubar(void);
+enum menubar_type_t get_show_menubar(void);
-void set_show_menubar(enum menubar_override);
+void set_show_menubar(enum menubar_type_t);
 
 GB_color_correction_mode_t get_color_correction_mode(void);
 void set_color_correction_mode(GB_color_correction_mode_t);

gtk3/shader.c

@@ -63,11 +63,7 @@ static GLuint create_program(const char *vsh, const char *fsh)
 
 bool init_shader_with_name(shader_t *shader, const char *name)
 {
-    GLint major = 0, minor = 0;
+    if (epoxy_gl_version() < 32) {
-    glGetIntegerv(GL_MAJOR_VERSION, &major);
-    glGetIntegerv(GL_MINOR_VERSION, &minor);
-    
-    if (major * 0x100 + minor < 0x302) {
         return false;
     }
     

gtk3/shader.h

@@ -14,6 +14,8 @@ typedef struct shader_s {
     GLuint texture;
     GLuint previous_texture;
     GLuint program;
+
+    bool compat_mode;
 } shader_t;
 
 bool init_shader_with_name(shader_t *shader, const char *name);