Mesa (master): i965: Add performance debug for fast clear fallbacks.
Eric Anholt
anholt at kemper.freedesktop.org
Mon Aug 13 02:24:29 UTC 2012
Module: Mesa
Branch: master
Commit: b4da272a6ea58a7c81c71477d65d82651555709a
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=b4da272a6ea58a7c81c71477d65d82651555709a
Author: Eric Anholt <eric at anholt.net>
Date: Thu Jul 12 13:14:42 2012 -0700
i965: Add performance debug for fast clear fallbacks.
Reviewed-by: Jordan Justen <jordan.l.justen at intel.com>
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
---
src/mesa/drivers/dri/i965/brw_clear.c | 10 +++++++++-
1 files changed, 9 insertions(+), 1 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_clear.c b/src/mesa/drivers/dri/i965/brw_clear.c
index 05dd68b..e56a26a 100644
--- a/src/mesa/drivers/dri/i965/brw_clear.c
+++ b/src/mesa/drivers/dri/i965/brw_clear.c
@@ -107,14 +107,22 @@ brw_fast_clear_depth(struct gl_context *ctx)
* a previous clear had happened at a different clear value and resolve it
* first.
*/
- if (ctx->Scissor.Enabled)
+ if (ctx->Scissor.Enabled) {
+ perf_debug("Failed to fast clear depth due to scissor being enabled. "
+ "Possible 5%% performance win if avoided.\n");
return false;
+ }
/* The rendered area has to be 8x4 samples, not resolved pixels, so we look
* at the miptree slice dimensions instead of renderbuffer size.
*/
if (mt->level[depth_irb->mt_level].width % 8 != 0 ||
mt->level[depth_irb->mt_level].height % 4 != 0) {
+ perf_debug("Failed to fast clear depth due to width/height %d,%d not "
+ "being aligned to 8,4. Possible 5%% performance win if "
+ "avoided\n",
+ mt->level[depth_irb->mt_level].width,
+ mt->level[depth_irb->mt_level].height);
return false;
}
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