egl-headless: switch over to new display registry

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20180301100547.18962-6-kraxel@redhat.com

include/ui/console.h

@@ -456,7 +456,4 @@ int vnc_init_func(void *opaque, QemuOpts *opts, Error **errp);
 /* input.c */
 int index_from_key(const char *key, size_t key_length);
 
-/* egl-headless.c */
-void egl_headless_init(DisplayOptions *opts);
-
 #endif

ui/egl-headless.c

@@ -164,7 +164,12 @@ static const DisplayChangeListenerOps egl_ops = {
     .dpy_gl_update           = egl_scanout_flush,
 };
 
-void egl_headless_init(DisplayOptions *opts)
+static void early_egl_headless_init(DisplayOptions *opts)
+{
+    display_opengl = 1;
+}
+
+static void egl_headless_init(DisplayState *ds, DisplayOptions *opts)
 {
     QemuConsole *con;
     egl_dpy *edpy;
@@ -188,3 +193,16 @@ void egl_headless_init(DisplayOptions *opts)
         register_displaychangelistener(&edpy->dcl);
     }
 }
+
+static QemuDisplay qemu_display_egl = {
+    .type       = DISPLAY_TYPE_EGL_HEADLESS,
+    .early_init = early_egl_headless_init,
+    .init       = egl_headless_init,
+};
+
+static void register_egl(void)
+{
+    qemu_display_register(&qemu_display_egl);
+}
+
+type_init(register_egl);

vl.c

@@ -2160,13 +2160,7 @@ static void parse_display(const char *p)
             exit(1);
         }
     } else if (strstart(p, "egl-headless", &opts)) {
-#ifdef CONFIG_OPENGL_DMABUF
-        display_opengl = 1;
         dpy.type = DISPLAY_TYPE_EGL_HEADLESS;
-#else
-        error_report("egl support is disabled");
-        exit(1);
-#endif
     } else if (strstart(p, "curses", &opts)) {
         dpy.type = DISPLAY_TYPE_CURSES;
     } else if (strstart(p, "gtk", &opts)) {
@@ -4672,12 +4666,6 @@ int main(int argc, char **argv, char **envp)
         qemu_spice_display_init();
     }
 
-#ifdef CONFIG_OPENGL_DMABUF
-    if (dpy.type == DISPLAY_TYPE_EGL_HEADLESS) {
-        egl_headless_init(&dpy);
-    }
-#endif
-
     if (foreach_device_config(DEV_GDB, gdbserver_start) < 0) {
         exit(1);
     }