DRW: Revamp the performance debugging tool.

Old performance debug was doing queries for every frame even if not debugging perf.
Also, it did not record when a pass was draw multiple time, leading to incorect measurement.

New module also allows to group the timers to limit infos displayed.

Also fix the background CPU draw timer.

1 files changed, 43 insertions, 0 deletions

diff --git a/source/blender/draw/intern/draw_manager_profiling.h b/source/blender/draw/intern/draw_manager_profiling.h
new file mode 100644
index 00000000000..233cd3878d2
--- /dev/null
+++ b/source/blender/draw/intern/draw_manager_profiling.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2016, Blender Foundation.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Contributor(s): Blender Institute
+ *
+ */
+
+/** \file draw_manager_profiling.h
+ *  \ingroup draw
+ */
+
+#ifndef __DRAW_MANAGER_PROFILING_H__
+#define __DRAW_MANAGER_PROFILING_H__
+
+struct rcti;
+
+void DRW_stats_free(void);
+void DRW_stats_begin(void);
+void DRW_stats_reset(void);
+
+void DRW_stats_group_start(const char *name);
+void DRW_stats_group_end(void);
+
+void DRW_stats_query_start(const char *name);
+void DRW_stats_query_end(void);
+
+void DRW_stats_draw(rcti *rect);
+
+#endif /* __DRAW_MANAGER_PROFILING_H__ */