+/* Initialize metrics info
+ *
+ * This queries the names and ranges for all available performance counters.
+ *
+ * This should be called once before any other metrics functions.
+ */
+void
+metrics_info_init (void);
+
+/* Finalize metrics info state.
+ *
+ * The function should be called just before setting a new, current,
+ * OpenGL context.
+ */
+void
+metrics_info_fini (void);
+