gtk: remove CONFIG_GTK_GL

CONFIG_GTK_GL is defined if OpenGL is present and GTK+
is 3.16 or newer.  Since GTK+ 3.22 is the minimum supported
version, just use CONFIG_OPENGL instead.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

configure

@@ -415,7 +415,6 @@ cfi_debug="false"
 seccomp="auto"
 glusterfs="auto"
 gtk="$default_feature"
-gtk_gl="no"
 tls_priority="NORMAL"
 gnutls="$default_feature"
 nettle="$default_feature"
@@ -3626,9 +3625,6 @@ if test "$opengl" != "no" ; then
     opengl_cflags="$($pkg_config --cflags $opengl_pkgs)"
     opengl_libs="$($pkg_config --libs $opengl_pkgs)"
     opengl=yes
-    if test "$gtk" = "yes" && $pkg_config --exists "$gtkpackage >= 3.16"; then
-        gtk_gl="yes"
-    fi
   else
     if test "$opengl" = "yes" ; then
       feature_not_found "opengl" "Please install opengl (mesa) devel pkgs: $opengl_pkgs"
@@ -5781,9 +5777,6 @@ if test "$gtk" = "yes" ; then
   echo "CONFIG_GTK=y" >> $config_host_mak
   echo "GTK_CFLAGS=$gtk_cflags" >> $config_host_mak
   echo "GTK_LIBS=$gtk_libs" >> $config_host_mak
-  if test "$gtk_gl" = "yes" ; then
-    echo "CONFIG_GTK_GL=y" >> $config_host_mak
-  fi
 fi
 if test "$gio" = "yes" ; then
     echo "CONFIG_GIO=y" >> $config_host_mak

meson.build

@@ -2338,7 +2338,6 @@ summary_info += {'SDL support':       sdl.found()}
 summary_info += {'SDL image support': sdl_image.found()}
 # TODO: add back version
 summary_info += {'GTK support':       config_host.has_key('CONFIG_GTK')}
-summary_info += {'GTK GL support':    config_host.has_key('CONFIG_GTK_GL')}
 summary_info += {'pixman':            pixman.found()}
 # TODO: add back version
 summary_info += {'VTE support':       config_host.has_key('CONFIG_VTE')}

ui/gtk.c

@@ -396,7 +396,7 @@ static void gd_update_full_redraw(VirtualConsole *vc)
     int ww, wh;
     ww = gdk_window_get_width(gtk_widget_get_window(area));
     wh = gdk_window_get_height(gtk_widget_get_window(area));
-#if defined(CONFIG_GTK_GL)
+#if defined(CONFIG_OPENGL)
     if (vc->gfx.gls && gtk_use_gl_area) {
         gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
         return;
@@ -625,7 +625,7 @@ static const DisplayChangeListenerOps dcl_ops = {
 
 /** DisplayState Callbacks (opengl version) **/
 
-#if defined(CONFIG_GTK_GL)
+#if defined(CONFIG_OPENGL)
 
 static const DisplayChangeListenerOps dcl_gl_area_ops = {
     .dpy_name             = "gtk-egl",
@@ -644,7 +644,7 @@ static const DisplayChangeListenerOps dcl_gl_area_ops = {
     .dpy_gl_update           = gd_gl_area_scanout_flush,
 };
 
-#endif /* CONFIG_GTK_GL */
+#endif /* CONFIG_OPENGL */
 
 static const DisplayChangeListenerOps dcl_egl_ops = {
     .dpy_name             = "gtk-egl",
@@ -725,7 +725,7 @@ static void gd_set_ui_info(VirtualConsole *vc, gint width, gint height)
     dpy_set_ui_info(vc->gfx.dcl.con, &info);
 }
 
-#if defined(CONFIG_GTK_GL)
+#if defined(CONFIG_OPENGL)
 
 static gboolean gd_render_event(GtkGLArea *area, GdkGLContext *context,
                                 void *opaque)
@@ -1865,7 +1865,7 @@ static void gd_connect_vc_gfx_signals(VirtualConsole *vc)
 {
     g_signal_connect(vc->gfx.drawing_area, "draw",
                      G_CALLBACK(gd_draw_event), vc);
-#if defined(CONFIG_GTK_GL)
+#if defined(CONFIG_OPENGL)
     if (gtk_use_gl_area) {
         /* wire up GtkGlArea events */
         g_signal_connect(vc->gfx.drawing_area, "render",
@@ -1992,12 +1992,12 @@ static GSList *gd_vc_gfx_init(GtkDisplayState *s, VirtualConsole *vc,
 
 #if defined(CONFIG_OPENGL)
     if (display_opengl) {
-#if defined(CONFIG_GTK_GL)
+#if defined(CONFIG_OPENGL)
         if (gtk_use_gl_area) {
             vc->gfx.drawing_area = gtk_gl_area_new();
             vc->gfx.dcl.ops = &dcl_gl_area_ops;
         } else
-#endif /* CONFIG_GTK_GL */
+#endif /* CONFIG_OPENGL */
         {
             vc->gfx.drawing_area = gtk_drawing_area_new();
             /*
@@ -2314,7 +2314,7 @@ static void early_gtk_display_init(DisplayOptions *opts)
     assert(opts->type == DISPLAY_TYPE_GTK);
     if (opts->has_gl && opts->gl != DISPLAYGL_MODE_OFF) {
 #if defined(CONFIG_OPENGL)
-#if defined(CONFIG_GTK_GL) && defined(GDK_WINDOWING_WAYLAND)
+#if defined(GDK_WINDOWING_WAYLAND)
         if (GDK_IS_WAYLAND_DISPLAY(gdk_display_get_default())) {
             gtk_use_gl_area = true;
             gtk_gl_area_init();

ui/meson.build

@@ -63,8 +63,7 @@ if config_host.has_key('CONFIG_GTK')
   gtk_ss = ss.source_set()
   gtk_ss.add(gtk, vte, pixman, files('gtk.c'))
   gtk_ss.add(when: [x11, 'CONFIG_X11'], if_true: files('x_keymap.c'))
-  gtk_ss.add(when: [opengl, 'CONFIG_OPENGL'], if_true: files('gtk-egl.c'))
+  gtk_ss.add(when: [opengl, 'CONFIG_OPENGL'], if_true: files('gtk-egl.c', 'gtk-gl-area.c'))
-  gtk_ss.add(when: [opengl, 'CONFIG_GTK_GL'], if_true: files('gtk-gl-area.c'))
   ui_modules += {'gtk' : gtk_ss}
 endif