diff --git a/Effects/transition-base-dirt.eff b/Effects/transition-base-dirt.eff
index a53bb9ccc..e66f8c2c4 100644
--- a/Effects/transition-base-dirt.eff
+++ b/Effects/transition-base-dirt.eff
@@ -3,14 +3,14 @@
     <name>Effects/transition-base-dirt</name>
     <inherits-from>Effects/transition</inherits-from>
     <parameters>
-	<texture n="3">
-	    <image>Textures.high/Terrain/dirt3.dds</image>
-	    <filter>linear-mipmap-linear</filter>
-	    <wrap-s>repeat</wrap-s>
-	    <wrap-t>repeat</wrap-t>
-	    <internal-format>normalized</internal-format>
-	</texture>
-	<transitions type="float">1.0</transitions>
-	<inverse type="float">0.0</inverse>
+		<texture n="3">
+		    <image>Textures.high/Terrain/dirt3.dds</image>
+		    <filter>linear-mipmap-linear</filter>
+		    <wrap-s>repeat</wrap-s>
+		    <wrap-t>repeat</wrap-t>
+		    <internal-format>normalized</internal-format>
+		</texture>
+		<transitions type="float">1.0</transitions>
+		<inverse type="float">0.0</inverse>
     </parameters>
 </PropertyList>
diff --git a/Effects/transition-base-grass-inverse.eff b/Effects/transition-base-grass-inverse.eff
index 477a4c630..8a4994232 100644
--- a/Effects/transition-base-grass-inverse.eff
+++ b/Effects/transition-base-grass-inverse.eff
@@ -3,16 +3,14 @@
     <name>Effects/transition-base-rock</name>
     <inherits-from>Effects/transition</inherits-from>
     <parameters>
-	<texture n="3">
-	    <image>Textures.high/Terrain/grass12.dds</image>
-	    <filter>linear-mipmap-linear</filter>
-	    <wrap-s>repeat</wrap-s>
-	    <wrap-t>repeat</wrap-t>
-	    <internal-format>normalized</internal-format>
-	</texture>
-
-	<transitions type="float">1.0</transitions>
-	<inverse type="float">1.0</inverse>
-
+		<texture n="3">
+		    <image>Textures.high/Terrain/grass12.dds</image>
+		    <filter>linear-mipmap-linear</filter>
+		    <wrap-s>repeat</wrap-s>
+		    <wrap-t>repeat</wrap-t>
+		    <internal-format>normalized</internal-format>
+		</texture>
+		<transitions type="float">1.0</transitions>
+		<inverse type="float">1.0</inverse>
     </parameters>
 </PropertyList>
diff --git a/Effects/transition-base-grass-rock.eff b/Effects/transition-base-grass-rock.eff
index 7ec5d5a5f..e9e1192ac 100644
--- a/Effects/transition-base-grass-rock.eff
+++ b/Effects/transition-base-grass-rock.eff
@@ -3,28 +3,28 @@
     <name>Effects/transition-base-grass-rock</name>
     <inherits-from>Effects/transition</inherits-from>
     <parameters>
-	<texture n="2">
-	    <image>Textures.high/Terrain/grass10c.dds</image>
-	    <filter>linear-mipmap-linear</filter>
-	    <wrap-s>repeat</wrap-s>
-	    <wrap-t>repeat</wrap-t>
-	    <internal-format>normalized</internal-format>
-	</texture>
-	<texture n="3">
-	    <image>Textures.high/Terrain/rock7.dds</image>
-	    <filter>linear-mipmap-linear</filter>
-	    <wrap-s>repeat</wrap-s>
-	    <wrap-t>repeat</wrap-t>
-	    <internal-format>normalized</internal-format>
-	</texture>
-	<texture n="4">
-	    <image>Textures.high/Terrain.winter/mixedforest1c.dds</image>
-	    <filter>linear-mipmap-linear</filter>
-	    <wrap-s>repeat</wrap-s>
-	    <wrap-t>repeat</wrap-t>
-	    <internal-format>normalized</internal-format>
-	</texture>
-	<transitions type="float">2.0</transitions>
-	<inverse type="float">0.0</inverse>
+		<texture n="2">
+		    <image>Textures.high/Terrain/grass10c.dds</image>
+		    <filter>linear-mipmap-linear</filter>
+		    <wrap-s>repeat</wrap-s>
+		    <wrap-t>repeat</wrap-t>
+		    <internal-format>normalized</internal-format>
+		</texture>
+		<texture n="3">
+		    <image>Textures.high/Terrain/rock7.dds</image>
+		    <filter>linear-mipmap-linear</filter>
+		    <wrap-s>repeat</wrap-s>
+		    <wrap-t>repeat</wrap-t>
+		    <internal-format>normalized</internal-format>
+		</texture>
+		<texture n="4">
+		    <image>Textures.high/Terrain.winter/mixedforest1c.dds</image>
+		    <filter>linear-mipmap-linear</filter>
+		    <wrap-s>repeat</wrap-s>
+		    <wrap-t>repeat</wrap-t>
+		    <internal-format>normalized</internal-format>
+		</texture>
+		<transitions type="float">2.0</transitions>
+		<inverse type="float">0.0</inverse>
     </parameters>
 </PropertyList>
diff --git a/Effects/transition-base-rock.eff b/Effects/transition-base-rock.eff
index 027ade306..87de290e5 100644
--- a/Effects/transition-base-rock.eff
+++ b/Effects/transition-base-rock.eff
@@ -3,16 +3,14 @@
     <name>Effects/transition-base-rock</name>
     <inherits-from>Effects/transition</inherits-from>
     <parameters>
-	<texture n="3">
-	    <image>Textures.high/Terrain/rock7.dds</image>
-	    <filter>linear-mipmap-linear</filter>
-	    <wrap-s>repeat</wrap-s>
-	    <wrap-t>repeat</wrap-t>
-	    <internal-format>normalized</internal-format>
-	</texture>
-
-	<transitions type="float">1.0</transitions>
-	<inverse type="float">0.0</inverse>
-
+		<texture n="3">
+		    <image>Textures.high/Terrain/rock7.dds</image>
+		    <filter>linear-mipmap-linear</filter>
+		    <wrap-s>repeat</wrap-s>
+		    <wrap-t>repeat</wrap-t>
+		    <internal-format>normalized</internal-format>
+		</texture>
+		<transitions type="float">1.0</transitions>
+		<inverse type="float">0.0</inverse>
     </parameters>
 </PropertyList>
diff --git a/Effects/transition.eff b/Effects/transition.eff
index 382258afc..e1fcf18bb 100644
--- a/Effects/transition.eff
+++ b/Effects/transition.eff
@@ -94,10 +94,6 @@ parameters :
 			<and>
 				<property>/sim/rendering/shaders/transition</property>
 				<property>/sim/rendering/rembrandt/enabled</property>
-				<less-equal>
-					<value type="float">4.0</value>
-					<float-property>/sim/rendering/shaders/water</float-property>
-				</less-equal>
 				<or>
 					<less-equal>
 						<value type="float">2.0</value>
@@ -394,6 +390,10 @@ parameters :
 		<predicate>
 			<and>
 				<property>/sim/rendering/shaders/transition</property>
+				<equal>
+					<value type="float">0.0</value>
+					<float-property>/sim/rendering/rembrandt/enabled</float-property>
+				</equal>
 				<or>
 					<less-equal>
 						<value type="float">2.0</value>
diff --git a/gui/dialogs/shaders.xml b/gui/dialogs/shaders.xml
index 6d263e2ba..fd43277e4 100644
--- a/gui/dialogs/shaders.xml
+++ b/gui/dialogs/shaders.xml
@@ -56,7 +56,7 @@
 				<halign>left</halign>
 				<label>Generic</label>
 			</text>
-			
+
 			<text>
 				<halign>left</halign>
 				<label>Crop</label>
@@ -91,12 +91,18 @@
 				<halign>left</halign>
 				<label>Transition</label>
 				<enable>
-					<not>
-						<property>/sim/rendering/rembrandt/enabled</property>
-					</not>
+					<or>
+						<not>
+							<property>/sim/rendering/rembrandt/enabled</property>
+						</not>
+						<equals>
+							<property>/sim/rendering/materials-file</property>
+							<value>Materials/dds/materials.xml</value>
+						</equals>
+					</or>
 				</enable>
 			</text>
-			
+
 			<text>
 				<halign>left</halign>
 				<label>Model</label>
@@ -130,7 +136,7 @@
 					<object-name>generic</object-name>
 				</binding>
 			</slider>
-			
+
 			<slider>
 				<name>crop</name>
 				<enable>
@@ -191,9 +197,15 @@
 			<slider>
 				<name>transition</name>
 				<enable>
-					<not>
-						<property>/sim/rendering/rembrandt/enabled</property>
-					</not>
+					<or>
+						<not>
+							<property>/sim/rendering/rembrandt/enabled</property>
+						</not>
+						<equals>
+							<property>/sim/rendering/materials-file</property>
+							<value>Materials/dds/materials.xml</value>
+						</equals>
+					</or>
 				</enable>
 				<min>0.0</min>
 				<max>1.0</max>
@@ -252,7 +264,7 @@
 		</group>
 
 	</group>
-	
+
 	<text>
 		<label>Some shaders are disabled because</label>
 		<color>
@@ -371,7 +383,7 @@
 	</group>
 
 	<hrule/>
-	
+
 	<group>
 		<layout>hbox</layout>