METRICS_OP_SHADER
} metrics_op_t;
+/* Timer query */
+typedef struct timer_query
+{
+ unsigned id;
+
+ metrics_op_t op;
+ struct timer_query *next;
+} timer_query_t;
+
+/* Performance-monitor query */
+typedef struct monitor
+{
+ unsigned id;
+
+ metrics_op_t op;
+ struct monitor *next;
+} monitor_t;
+
+typedef struct op_metrics
+{
+ /* This happens to also be the index into the
+ * ctx->op_metrics array currently
+ */
+ metrics_op_t op;
+ double time_ns;
+
+ double **counters;
+} op_metrics_t;
+
+typedef struct metrics
+{
+ metrics_op_t op;
+
+ /* GL_TIME_ELAPSED query for which glEndQuery has not yet
+ * been called. */
+ unsigned timer_begun_id;
+
+ /* GL_TIME_ELAPSED queries for which glEndQuery has been
+ * called, (but results have not yet been queried). */
+ timer_query_t *timer_head;
+ timer_query_t *timer_tail;
+
+ /* Performance monitor for which glEndPerfMonitorAMD has not
+ * yet been called. */
+ unsigned monitor_begun_id;
+
+ /* Performance monitors for which glEndPerfMonitorAMD has
+ * been called, (but results have not yet been queried). */
+ monitor_t *monitor_head;
+ monitor_t *monitor_tail;
+
+ int monitors_in_flight;
+
+ unsigned num_op_metrics;
+ op_metrics_t *op_metrics;
+} metrics_t;
+
+/* Initialize a metrics_t object for tracking metrics. */
+void
+metrics_init (metrics_t *metrics);
+
+/* Cleanup a metrics_t object that's no longer needed. */
+void
+metrics_fini (metrics_t *metrics);
+
/* Start accumulating GPU time.
*
* The time accumulated will be accounted against the
void
metrics_end_frame (void);
+/* Process outstanding metrics requests, accumulating results.
+ *
+ * This function is called automatically by metrics_end_frame.
+ *
+ * During a frame, it may be important to call this function to avoid
+ * too many oustanding timer/performance-monitor queries. At the same
+ * time, it's important not to call this function too frequently,
+ * since collection of metrics information will result in flushes of
+ * the OpenGL pipeline which can interfere with the behavior being
+ * measured.
+ */
+void
+metrics_collect_available (void);
+
#endif