1 files changed, 65 insertions, 0 deletions
diff --git a/panels/info-overview/gnome-control-center-print-renderer.c b/panels/info-overview/gnome-control-center-print-renderer.c
new file mode 100644
index 0000000..e84a11a
--- /dev/null
+++ b/panels/info-overview/gnome-control-center-print-renderer.c
@@ -0,0 +1,65 @@
+/* -*- mode:c; c-basic-offset: 8; indent-tabs-mode: nil; -*- */
+/* Tool to set the property _GNOME_SESSION_ACCELERATED on the root window */
+/*
+ * Copyright (C) 2019 Red Hat, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * Author:
+ *   Bastien Nocera <hadess@hadess.net>
+ *   Matthias Clasen <mclasen@redhat.com>
+ */
+
+#include <gtk/gtk.h>
+#include <epoxy/gl.h>
+
+static char *
+get_gtk_gles_renderer (void)
+{
+        GdkSurface *surface;
+        GtkNative *native;
+        GtkWidget *win;
+        GdkGLContext *context;
+        char *renderer = NULL;
+
+        win = gtk_window_new ();
+        gtk_widget_realize (win);
+        native = gtk_widget_get_native (win);
+        surface = gtk_native_get_surface (native);
+        context = gdk_surface_create_gl_context (surface, NULL);
+        if (!context)
+                return NULL;
+        gdk_gl_context_make_current (context);
+        renderer = g_strdup ((char *) glGetString (GL_RENDERER));
+        gdk_gl_context_clear_current ();
+        g_object_unref (context);
+
+        return renderer;
+}
+
+int
+main (int argc, char **argv)
+{
+        g_autofree char *renderer_string = NULL;
+
+        gtk_init ();
+
+        renderer_string = get_gtk_gles_renderer ();
+        if (renderer_string) {
+                g_print ("%s", renderer_string);
+                return 0;
+        }
+        return 1;
+}