From 8ca17f52627f6d6191973352ee5c2624bc0b93bf Mon Sep 17 00:00:00 2001
From: Robert Bragg <robert@linux.intel.com>
Date: Thu, 22 Oct 2009 19:09:20 +0100
Subject: [PATCH] [cogl] avoid any state changes when
 cogl_set_backface_culling_enable is a nop

This is a simple optimization to bail out of cogl_set_backface_culling_enable
if it's not resulting in a change of state.
---
 cogl/cogl.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/cogl/cogl.c b/cogl/cogl.c
index 18a51fa90..b1cef8b5b 100644
--- a/cogl/cogl.c
+++ b/cogl/cogl.c
@@ -270,6 +270,9 @@ cogl_set_backface_culling_enabled (gboolean setting)
 {
   _COGL_GET_CONTEXT (ctx, NO_RETVAL);
 
+  if (ctx->enable_backface_culling == setting)
+    return;
+
   /* Currently the journal can't track changes to backface culling state... */
   _cogl_journal_flush ();