From 630a46c11d7bac78734f4e51f90254bb98921622 Mon Sep 17 00:00:00 2001
From: Thorsten Renk <thorsten.i.renk@jyu.fi>
Date: Mon, 11 Jan 2016 08:44:31 +0200
Subject: [PATCH] Restoring the airport keep effect for CA. This isn't just an
 aesthetic problem - at lower quality levels it's needed for rendering landing
 lights and in general for snowdrift and the runway edges without creating
 visual artifacts. Such artifacts at the runway edge where pilots regularly
 look are far more worrisome than at the interface between airport keep and
 terrain

---
 Materials/regions/california.xml   | 14 +++++++++++---
 Materials/regions/us_southwest.xml | 14 +++++++++++---
 2 files changed, 22 insertions(+), 6 deletions(-)

diff --git a/Materials/regions/california.xml b/Materials/regions/california.xml
index 296c21ebe..521f6c9fb 100644
--- a/Materials/regions/california.xml
+++ b/Materials/regions/california.xml
@@ -86,9 +86,17 @@
     <name>Grass</name>
     <name>Airport</name>
     <name>AirportKeep</name>
-	  <texture-set>
-		  <texture>Terrain/california-airport.png</texture>
-  	</texture-set>
+    <effect>Effects/airfield</effect>
+       <texture-set>
+	<texture>Terrain/california-airport.png</texture>
+ 	<texture n="13">Terrain/gravel_red.png</texture>
+        <texture n="14">Terrain/grass_dry2.png</texture>
+       </texture-set>
+    <parameters>
+      <grit_alpha>0.4</grit_alpha>
+      <use_overlay>1</use_overlay>
+      <overlay_bias>-0.1</overlay_bias>
+    </parameters>
     <xsize>250</xsize>
     <ysize>250</ysize>
     <light-coverage>4000000.0</light-coverage>
diff --git a/Materials/regions/us_southwest.xml b/Materials/regions/us_southwest.xml
index b6bc0a7e3..a2343902a 100644
--- a/Materials/regions/us_southwest.xml
+++ b/Materials/regions/us_southwest.xml
@@ -36,9 +36,17 @@
     <name>Grass</name>
     <name>Airport</name>
     <name>AirportKeep</name>
-	  <texture-set>
-		  <texture>Terrain/california-airport.png</texture>
-  	</texture-set>
+    <effect>Effects/airfield</effect>
+    <texture-set>
+      <texture>Terrain/california-airport.png</texture>
+      <texture n="13">Terrain/gravel_red.png</texture>
+      <texture n="14">Terrain/grass_dry2.png</texture>
+    </texture-set>
+    <parameters>
+      <grit_alpha>0.4</grit_alpha>
+      <use_overlay>1</use_overlay>
+      <overlay_bias>-0.1</overlay_bias>
+    </parameters>
     <xsize>250</xsize>
     <ysize>250</ysize>
     <light-coverage>4000000.0</light-coverage>