ui/dbus: restrict opengl to gbm-enabled config

We can enable EGL later for non-GBM hosts.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>

ui/dbus-listener.c

@@ -50,7 +50,7 @@ struct _DBusDisplayListener {
 
 G_DEFINE_TYPE(DBusDisplayListener, dbus_display_listener, G_TYPE_OBJECT)
 
-#ifdef CONFIG_OPENGL
+#ifdef CONFIG_GBM
 static void dbus_update_gl_cb(GObject *source_object,
                            GAsyncResult *res,
                            gpointer user_data)
@@ -239,7 +239,7 @@ static void dbus_refresh(DisplayChangeListener *dcl)
     graphic_hw_update(dcl->con);
 }
 
-#ifdef CONFIG_OPENGL
+#ifdef CONFIG_GBM
 static void dbus_gl_gfx_update(DisplayChangeListener *dcl,
                                int x, int y, int w, int h)
 {
@@ -302,7 +302,7 @@ static void dbus_gfx_update(DisplayChangeListener *dcl,
         DBUS_DEFAULT_TIMEOUT, NULL, NULL, NULL);
 }
 
-#ifdef CONFIG_OPENGL
+#ifdef CONFIG_GBM
 static void dbus_gl_gfx_switch(DisplayChangeListener *dcl,
                                struct DisplaySurface *new_surface)
 {
@@ -369,7 +369,7 @@ static void dbus_cursor_define(DisplayChangeListener *dcl,
         NULL);
 }
 
-#ifdef CONFIG_OPENGL
+#ifdef CONFIG_GBM
 const DisplayChangeListenerOps dbus_gl_dcl_ops = {
     .dpy_name                = "dbus-gl",
     .dpy_gfx_update          = dbus_gl_gfx_update,
@@ -417,7 +417,7 @@ dbus_display_listener_constructed(GObject *object)
     DBusDisplayListener *ddl = DBUS_DISPLAY_LISTENER(object);
 
     ddl->dcl.ops = &dbus_dcl_ops;
-#ifdef CONFIG_OPENGL
+#ifdef CONFIG_GBM
     if (display_opengl) {
         ddl->dcl.ops = &dbus_gl_dcl_ops;
     }

ui/dbus.c

@@ -47,8 +47,10 @@ static DBusDisplay *dbus_display;
 static QEMUGLContext dbus_create_context(DisplayGLCtx *dgc,
                                          QEMUGLParams *params)
 {
+#ifdef CONFIG_GBM
     eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE,
                    qemu_egl_rn_ctx);
+#endif
     return qemu_egl_create_context(dgc, params);
 }
 
@@ -56,7 +58,11 @@ static bool
 dbus_is_compatible_dcl(DisplayGLCtx *dgc,
                        DisplayChangeListener *dcl)
 {
-    return dcl->ops == &dbus_gl_dcl_ops || dcl->ops == &dbus_console_dcl_ops;
+    return
+#ifdef CONFIG_GBM
+        dcl->ops == &dbus_gl_dcl_ops ||
+#endif
+        dcl->ops == &dbus_console_dcl_ops;
 }
 
 static void
@@ -459,7 +465,11 @@ early_dbus_init(DisplayOptions *opts)
     DisplayGLMode mode = opts->has_gl ? opts->gl : DISPLAYGL_MODE_OFF;
 
     if (mode != DISPLAYGL_MODE_OFF) {
+#ifdef CONFIG_OPENGL
         egl_init(opts->u.dbus.rendernode, mode, &error_fatal);
+#else
+        error_report("dbus: GL rendering is not supported");
+#endif
     }
 
     type_register(&dbus_vc_type_info);