From 9e893e684e89fd9da1d7542cbbc3563d318c1c5c Mon Sep 17 00:00:00 2001
From: Robert Bragg <robert@linux.intel.com>
Date: Sat, 10 Jul 2010 01:36:22 +0100
Subject: [PATCH] material: copy_differences: handle copying fog state

When the support for redirecting the legacy fog state through cogl
material was added in 9b9e764dc, the code to handle copying the fog
state in _cogl_material_copy_differences was missed.
---
 clutter/cogl/cogl/cogl-material.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/clutter/cogl/cogl/cogl-material.c b/clutter/cogl/cogl/cogl-material.c
index 6fc658cc0..5cd53f3a5 100644
--- a/clutter/cogl/cogl/cogl-material.c
+++ b/clutter/cogl/cogl/cogl-material.c
@@ -1089,6 +1089,13 @@ _cogl_material_copy_differences (CoglMaterial *dest,
               sizeof (CoglMaterialDepthState));
     }
 
+  if (differences & COGL_MATERIAL_STATE_FOG)
+    {
+      memcpy (&big_state->fog_state,
+              &src->big_state->fog_state,
+              sizeof (CoglMaterialFogState));
+    }
+
   if (differences & COGL_MATERIAL_STATE_POINT_SIZE)
     big_state->point_size = src->big_state->point_size;