llvmpipe: added simple perf/statistics counting facility

Currently counting number of tris, how many tiles of each size are
fully covered, partially covered or empty, etc.

Set LP_DEBUG=counters to enable.  Results are printed upon context
destruction.

1 files changed, 74 insertions, 0 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_perf.h b/src/gallium/drivers/llvmpipe/lp_perf.h
new file mode 100644
index 0000000000..9886088c38
--- /dev/null
+++ b/src/gallium/drivers/llvmpipe/lp_perf.h
@@ -0,0 +1,74 @@
+/**************************************************************************
+ *
+ * Copyright 2009 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+/**
+ * Performance / statistic counters, etc.
+ */
+
+
+#ifndef LP_PERF_H
+#define LP_PERF_H
+
+
+/**
+ * Various counters
+ */
+struct lp_counters
+{
+   unsigned nr_tris;
+   unsigned nr_culled_tris;
+   unsigned nr_empty_64;
+   unsigned nr_fully_covered_64;
+   unsigned nr_partially_covered_64;
+   unsigned nr_empty_16;
+   unsigned nr_fully_covered_16;
+   unsigned nr_partially_covered_16;
+   unsigned nr_empty_4;
+   unsigned nr_non_empty_4;
+};
+
+
+extern struct lp_counters lp_count;
+
+
+/** Increment the named counter (only for debug builds) */
+#ifdef DEBUG
+#define LP_COUNT(counter) lp_count.counter++
+#else
+#define LP_COUNT(counter)
+#endif
+
+
+extern void
+lp_reset_counters(void);
+
+
+extern void
+lp_print_counters(void);
+
+
+#endif /* LP_PERF_H */