From 572a7203882144b51e241f7a3b0e8d6a9a5395e7 Mon Sep 17 00:00:00 2001
From: Thorsten Renk <thorsten.i.renk@jyu.fi>
Date: Tue, 11 Mar 2014 12:25:47 +0200
Subject: [PATCH] Cloud shadows for water shader effect

---
 Effects/water-inland.eff      | 269 +++++++++++++++++++++++--
 Effects/water.eff             | 367 +++++++++++++++++++++++++---------
 Shaders/water_lightfield.frag |  16 +-
 3 files changed, 531 insertions(+), 121 deletions(-)

diff --git a/Effects/water-inland.eff b/Effects/water-inland.eff
index dcb917e79..09796b3c3 100644
--- a/Effects/water-inland.eff
+++ b/Effects/water-inland.eff
@@ -138,6 +138,48 @@
 		<fogtype>
 			<use>/sim/rendering/shaders/skydome</use>
 		</fogtype>
+		<!-- cloud shadows -->
+		<cloudpos1_x><use>/local-weather/cloud-shadows/cloudpos-x[0]</use></cloudpos1_x>
+		<cloudpos1_y><use>/local-weather/cloud-shadows/cloudpos-y[0]</use></cloudpos1_y>
+		<cloudpos2_x><use>/local-weather/cloud-shadows/cloudpos-x[1]</use></cloudpos2_x>
+		<cloudpos2_y><use>/local-weather/cloud-shadows/cloudpos-y[1]</use></cloudpos2_y>
+		<cloudpos3_x><use>/local-weather/cloud-shadows/cloudpos-x[2]</use></cloudpos3_x>
+		<cloudpos3_y><use>/local-weather/cloud-shadows/cloudpos-y[2]</use></cloudpos3_y>
+		<cloudpos4_x><use>/local-weather/cloud-shadows/cloudpos-x[3]</use></cloudpos4_x>
+		<cloudpos4_y><use>/local-weather/cloud-shadows/cloudpos-y[3]</use></cloudpos4_y>
+		<cloudpos5_x><use>/local-weather/cloud-shadows/cloudpos-x[4]</use></cloudpos5_x>
+		<cloudpos5_y><use>/local-weather/cloud-shadows/cloudpos-y[4]</use></cloudpos5_y>
+		<cloudpos6_x><use>/local-weather/cloud-shadows/cloudpos-x[5]</use></cloudpos6_x>
+		<cloudpos6_y><use>/local-weather/cloud-shadows/cloudpos-y[5]</use></cloudpos6_y>
+		<cloudpos7_x><use>/local-weather/cloud-shadows/cloudpos-x[6]</use></cloudpos7_x>
+		<cloudpos7_y><use>/local-weather/cloud-shadows/cloudpos-y[6]</use></cloudpos7_y>
+		<cloudpos8_x><use>/local-weather/cloud-shadows/cloudpos-x[7]</use></cloudpos8_x>
+		<cloudpos8_y><use>/local-weather/cloud-shadows/cloudpos-y[7]</use></cloudpos8_y>
+		<cloudpos9_x><use>/local-weather/cloud-shadows/cloudpos-x[8]</use></cloudpos9_x>
+		<cloudpos9_y><use>/local-weather/cloud-shadows/cloudpos-y[8]</use></cloudpos9_y>
+		<cloudpos10_x><use>/local-weather/cloud-shadows/cloudpos-x[9]</use></cloudpos10_x>
+		<cloudpos10_y><use>/local-weather/cloud-shadows/cloudpos-y[9]</use></cloudpos10_y>
+		<cloudpos11_x><use>/local-weather/cloud-shadows/cloudpos-x[10]</use></cloudpos11_x>
+		<cloudpos11_y><use>/local-weather/cloud-shadows/cloudpos-y[10]</use></cloudpos11_y>
+		<cloudpos12_x><use>/local-weather/cloud-shadows/cloudpos-x[11]</use></cloudpos12_x>
+		<cloudpos12_y><use>/local-weather/cloud-shadows/cloudpos-y[11]</use></cloudpos12_y>
+		<cloudpos13_x><use>/local-weather/cloud-shadows/cloudpos-x[12]</use></cloudpos13_x>
+		<cloudpos13_y><use>/local-weather/cloud-shadows/cloudpos-y[12]</use></cloudpos13_y>
+		<cloudpos14_x><use>/local-weather/cloud-shadows/cloudpos-x[13]</use></cloudpos14_x>
+		<cloudpos14_y><use>/local-weather/cloud-shadows/cloudpos-y[13]</use></cloudpos14_y>
+		<cloudpos15_x><use>/local-weather/cloud-shadows/cloudpos-x[14]</use></cloudpos15_x>
+		<cloudpos15_y><use>/local-weather/cloud-shadows/cloudpos-y[14]</use></cloudpos15_y>
+		<cloudpos16_x><use>/local-weather/cloud-shadows/cloudpos-x[15]</use></cloudpos16_x>
+		<cloudpos16_y><use>/local-weather/cloud-shadows/cloudpos-y[15]</use></cloudpos16_y>
+		<cloudpos17_x><use>/local-weather/cloud-shadows/cloudpos-x[16]</use></cloudpos17_x>
+		<cloudpos17_y><use>/local-weather/cloud-shadows/cloudpos-y[16]</use></cloudpos17_y>
+		<cloudpos18_x><use>/local-weather/cloud-shadows/cloudpos-x[17]</use></cloudpos18_x>
+		<cloudpos18_y><use>/local-weather/cloud-shadows/cloudpos-y[17]</use></cloudpos18_y>
+		<cloudpos19_x><use>/local-weather/cloud-shadows/cloudpos-x[18]</use></cloudpos19_x>
+		<cloudpos19_y><use>/local-weather/cloud-shadows/cloudpos-y[18]</use></cloudpos19_y>
+		<cloudpos20_x><use>/local-weather/cloud-shadows/cloudpos-x[19]</use></cloudpos20_x>
+		<cloudpos20_y><use>/local-weather/cloud-shadows/cloudpos-y[19]</use></cloudpos20_y>
+		<cloud_shadow_flag><use>/local-weather/cloud-shadows/cloud-shadow-flag</use></cloud_shadow_flag>
 		<!-- sea colors -->
 		<sea_r>
 			<use>/environment/sea/color_r</use>
@@ -273,27 +315,6 @@
 					<use>texture[3]/internal-format</use>
 				</internal-format>
 			</texture-unit>
-			<!--<texture-unit>
-				<unit>4</unit>
-				<image>
-					<use>texture[4]/image</use>
-				</image>
-				<type>
-					<use>texture[4]/type</use>
-				</type>
-				<filter>
-					<use>texture[4]/filter</use>
-				</filter>
-				<wrap-s>
-					<use>texture[4]/wrap-s</use>
-				</wrap-s>
-				<wrap-t>
-					<use>texture[4]/wrap-t</use>
-				</wrap-t>
-				<internal-format>
-					<use>texture[4]/internal-format</use>
-				</internal-format>
-			</texture-unit>-->
 			<texture-unit>
 				<unit>5</unit>
 				<image>
@@ -340,6 +361,7 @@
 			<program>
 				<vertex-shader>Shaders/water_lightfield.vert</vertex-shader>
 				<fragment-shader>Shaders/water_lightfield.frag</fragment-shader>
+				<fragment-shader>Shaders/cloud-shadowfunc.frag</fragment-shader>
 			</program>
 			<!--<uniform>
 				<name>water_reflection</name>
@@ -510,6 +532,211 @@
         			<type>float</type>
         			<value><use>cloud_self_shading</use></value>
       			</uniform>
+		<uniform>
+       				<name>cloudpos1_x</name>
+        			<type>float</type>
+        		   	<value><use>cloudpos1_x</use></value>
+      			</uniform>
+	  		<uniform>
+       				<name>cloudpos1_y</name>
+        			<type>float</type>
+        			<value><use>cloudpos1_y</use></value>
+      			</uniform>
+			   <uniform>
+       				  <name>cloudpos2_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos2_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos2_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos2_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos3_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos3_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos3_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos3_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos4_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos4_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos4_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos4_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos5_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos5_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos5_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos5_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos6_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos6_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos6_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos6_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos7_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos7_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos7_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos7_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos8_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos8_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos8_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos8_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos9_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos9_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos9_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos9_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos10_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos10_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos10_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos10_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos11_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos11_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos11_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos11_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos12_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos12_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos12_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos12_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos13_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos13_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos13_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos13_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos14_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos14_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos14_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos14_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos15_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos15_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos15_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos15_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos16_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos16_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos16_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos16_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos17_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos17_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos17_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos17_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos18_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos18_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos18_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos18_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos19_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos19_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos19_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos19_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos20_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos20_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos20_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos20_y</use></value>
+      			   </uniform>
+	  		   <uniform>
+        			  <name>cloud_shadow_flag</name>
+        			  <type>int</type>
+        			  <value><use>cloud_shadow_flag</use></value>
+      			   </uniform>
 			<!-- sea colors -->
 			<uniform>
 				<name>sea_r</name>
diff --git a/Effects/water.eff b/Effects/water.eff
index 31ee0369a..98fda8344 100644
--- a/Effects/water.eff
+++ b/Effects/water.eff
@@ -118,61 +118,67 @@
 		</WaveDAngle>
 
 		<!-- 	fog include -->
-		<visibility>
-			<use>/environment/ground-visibility-m</use>
-		</visibility>
-		<avisibility>
-			<use>/environment/visibility-m</use>
-		</avisibility>
-		<lthickness>
-			<use>/environment/ground-haze-thickness-m</use>
-		</lthickness>
-		<scattering>
-			<use>/rendering/scene/scattering</use>
-		</scattering>
-		<ground_scattering>
-			<use>/environment/surface/scattering</use>
-		</ground_scattering>
-		<terminator>
-			<use>/environment/terminator-relative-position-m</use>
-		</terminator>
-		<terrain_alt>
-			<use>/environment/mean-terrain-elevation-m</use>
-		</terrain_alt>
-		<overcast>
-			<use>/rendering/scene/overcast</use>
-		</overcast>
-		<eye_alt>
-			<use>/sim/rendering/eye-altitude-m</use>
-		</eye_alt>
-		<cloud_self_shading>
-			<use>/environment/cloud-self-shading</use>
-		</cloud_self_shading>
-    		<moonlight>
-			<use>/environment/moonlight</use>
-		</moonlight>
-		<fogtype>
-			<use>/sim/rendering/shaders/skydome</use>
-		</fogtype>
-		<fogstructure>
-			<use>/environment/fog-structure</use>
-		</fogstructure>
-		<ice_cover>
-			<use>/environment/sea/surface/ice-cover</use>
-		</ice_cover>
-		<quality_level>
-			<use>/sim/rendering/shaders/landmass</use>
-		</quality_level>
+		<visibility><use>/environment/ground-visibility-m</use></visibility>
+		<avisibility><use>/environment/visibility-m</use></avisibility>
+		<lthickness><use>/environment/ground-haze-thickness-m</use></lthickness>
+		<scattering><use>/rendering/scene/scattering</use></scattering>
+		<ground_scattering><use>/environment/surface/scattering</use></ground_scattering>
+		<terminator><use>/environment/terminator-relative-position-m</use></terminator>
+		<terrain_alt><use>/environment/mean-terrain-elevation-m</use></terrain_alt>
+		<overcast><use>/rendering/scene/overcast</use></overcast>
+		<eye_alt><use>/sim/rendering/eye-altitude-m</use></eye_alt>
+		<cloud_self_shading><use>/environment/cloud-self-shading</use></cloud_self_shading>
+    		<moonlight><use>/environment/moonlight</use></moonlight>
+		<fogtype><use>/sim/rendering/shaders/skydome</use></fogtype>
+		<fogstructure><use>/environment/fog-structure</use></fogstructure>
+		<ice_cover><use>/environment/sea/surface/ice-cover</use></ice_cover>
+		<quality_level><use>/sim/rendering/shaders/landmass</use></quality_level>
 		<!-- sea colors -->
-		<sea_r>
-			<use>/environment/sea/color_r</use>
-		</sea_r>
-		<sea_g>
-			<use>/environment/sea/color_g</use>
-		</sea_g>
-		<sea_b>
-			<use>/environment/sea/color_b</use>
-		</sea_b>
+		<sea_r><use>/environment/sea/color_r</use></sea_r>
+		<sea_g><use>/environment/sea/color_g</use></sea_g>
+		<sea_b><use>/environment/sea/color_b</use></sea_b>
+		<!-- cloud shadows -->
+		<cloudpos1_x><use>/local-weather/cloud-shadows/cloudpos-x[0]</use></cloudpos1_x>
+		<cloudpos1_y><use>/local-weather/cloud-shadows/cloudpos-y[0]</use></cloudpos1_y>
+		<cloudpos2_x><use>/local-weather/cloud-shadows/cloudpos-x[1]</use></cloudpos2_x>
+		<cloudpos2_y><use>/local-weather/cloud-shadows/cloudpos-y[1]</use></cloudpos2_y>
+		<cloudpos3_x><use>/local-weather/cloud-shadows/cloudpos-x[2]</use></cloudpos3_x>
+		<cloudpos3_y><use>/local-weather/cloud-shadows/cloudpos-y[2]</use></cloudpos3_y>
+		<cloudpos4_x><use>/local-weather/cloud-shadows/cloudpos-x[3]</use></cloudpos4_x>
+		<cloudpos4_y><use>/local-weather/cloud-shadows/cloudpos-y[3]</use></cloudpos4_y>
+		<cloudpos5_x><use>/local-weather/cloud-shadows/cloudpos-x[4]</use></cloudpos5_x>
+		<cloudpos5_y><use>/local-weather/cloud-shadows/cloudpos-y[4]</use></cloudpos5_y>
+		<cloudpos6_x><use>/local-weather/cloud-shadows/cloudpos-x[5]</use></cloudpos6_x>
+		<cloudpos6_y><use>/local-weather/cloud-shadows/cloudpos-y[5]</use></cloudpos6_y>
+		<cloudpos7_x><use>/local-weather/cloud-shadows/cloudpos-x[6]</use></cloudpos7_x>
+		<cloudpos7_y><use>/local-weather/cloud-shadows/cloudpos-y[6]</use></cloudpos7_y>
+		<cloudpos8_x><use>/local-weather/cloud-shadows/cloudpos-x[7]</use></cloudpos8_x>
+		<cloudpos8_y><use>/local-weather/cloud-shadows/cloudpos-y[7]</use></cloudpos8_y>
+		<cloudpos9_x><use>/local-weather/cloud-shadows/cloudpos-x[8]</use></cloudpos9_x>
+		<cloudpos9_y><use>/local-weather/cloud-shadows/cloudpos-y[8]</use></cloudpos9_y>
+		<cloudpos10_x><use>/local-weather/cloud-shadows/cloudpos-x[9]</use></cloudpos10_x>
+		<cloudpos10_y><use>/local-weather/cloud-shadows/cloudpos-y[9]</use></cloudpos10_y>
+		<cloudpos11_x><use>/local-weather/cloud-shadows/cloudpos-x[10]</use></cloudpos11_x>
+		<cloudpos11_y><use>/local-weather/cloud-shadows/cloudpos-y[10]</use></cloudpos11_y>
+		<cloudpos12_x><use>/local-weather/cloud-shadows/cloudpos-x[11]</use></cloudpos12_x>
+		<cloudpos12_y><use>/local-weather/cloud-shadows/cloudpos-y[11]</use></cloudpos12_y>
+		<cloudpos13_x><use>/local-weather/cloud-shadows/cloudpos-x[12]</use></cloudpos13_x>
+		<cloudpos13_y><use>/local-weather/cloud-shadows/cloudpos-y[12]</use></cloudpos13_y>
+		<cloudpos14_x><use>/local-weather/cloud-shadows/cloudpos-x[13]</use></cloudpos14_x>
+		<cloudpos14_y><use>/local-weather/cloud-shadows/cloudpos-y[13]</use></cloudpos14_y>
+		<cloudpos15_x><use>/local-weather/cloud-shadows/cloudpos-x[14]</use></cloudpos15_x>
+		<cloudpos15_y><use>/local-weather/cloud-shadows/cloudpos-y[14]</use></cloudpos15_y>
+		<cloudpos16_x><use>/local-weather/cloud-shadows/cloudpos-x[15]</use></cloudpos16_x>
+		<cloudpos16_y><use>/local-weather/cloud-shadows/cloudpos-y[15]</use></cloudpos16_y>
+		<cloudpos17_x><use>/local-weather/cloud-shadows/cloudpos-x[16]</use></cloudpos17_x>
+		<cloudpos17_y><use>/local-weather/cloud-shadows/cloudpos-y[16]</use></cloudpos17_y>
+		<cloudpos18_x><use>/local-weather/cloud-shadows/cloudpos-x[17]</use></cloudpos18_x>
+		<cloudpos18_y><use>/local-weather/cloud-shadows/cloudpos-y[17]</use></cloudpos18_y>
+		<cloudpos19_x><use>/local-weather/cloud-shadows/cloudpos-x[18]</use></cloudpos19_x>
+		<cloudpos19_y><use>/local-weather/cloud-shadows/cloudpos-y[18]</use></cloudpos19_y>
+		<cloudpos20_x><use>/local-weather/cloud-shadows/cloudpos-x[19]</use></cloudpos20_x>
+		<cloudpos20_y><use>/local-weather/cloud-shadows/cloudpos-y[19]</use></cloudpos20_y>
+		<cloud_shadow_flag><use>/local-weather/cloud-shadows/cloud-shadow-flag</use></cloud_shadow_flag>
 		<!-- END fog include -->
 	</parameters>
 
@@ -235,27 +241,7 @@
 					<use>render-bin/bin-name</use>
 				</bin-name>
 			</render-bin>
-			<!--<texture-unit>
-				<unit>0</unit>
-				<image>
-					<use>texture[0]/image</use>
-				</image>
-				<type>
-					<use>texture[0]/type</use>
-				</type>
-				<filter>
-					<use>texture[0]/filter</use>
-				</filter>
-				<wrap-s>
-					<use>texture[0]/wrap-s</use>
-				</wrap-s>
-				<wrap-t>
-					<use>texture[0]/wrap-t</use>
-				</wrap-t>
-				<internal-format>
-					<use>texture[0]/internal-format</use>
-				</internal-format>
-			</texture-unit>-->
+			
 			<texture-unit>
 				<unit>2</unit>
 				<image>
@@ -319,27 +305,6 @@
                     			<use>texture[7]/internal-format</use>
                 		</internal-format>
             		</texture-unit>
-			<!--<texture-unit>
-				<unit>4</unit>
-				<image>
-					<use>texture[4]/image</use>
-				</image>
-				<type>
-					<use>texture[4]/type</use>
-				</type>
-				<filter>
-					<use>texture[4]/filter</use>
-				</filter>
-				<wrap-s>
-					<use>texture[4]/wrap-s</use>
-				</wrap-s>
-				<wrap-t>
-					<use>texture[4]/wrap-t</use>
-				</wrap-t>
-				<internal-format>
-					<use>texture[4]/internal-format</use>
-				</internal-format>
-			</texture-unit>-->
 			<texture-unit>
 				<unit>5</unit>
 				<image>
@@ -407,6 +372,7 @@
 			<program>
 				<vertex-shader>Shaders/water_lightfield.vert</vertex-shader>
 				<fragment-shader>Shaders/water_lightfield.frag</fragment-shader>
+				<fragment-shader>Shaders/cloud-shadowfunc.frag</fragment-shader>
 			</program>
 			<!--<uniform>
 				<name>water_reflection</name>
@@ -595,8 +561,213 @@
 			<uniform>
         			<name>ice_cover</name>
         			<type>float</type>
-        		<value><use>ice_cover</use></value>
-      		</uniform>
+        			<value><use>ice_cover</use></value>
+      			</uniform>
+			<uniform>
+       				<name>cloudpos1_x</name>
+        			<type>float</type>
+        		   	<value><use>cloudpos1_x</use></value>
+      			</uniform>
+	  		<uniform>
+       				<name>cloudpos1_y</name>
+        			<type>float</type>
+        			<value><use>cloudpos1_y</use></value>
+      			</uniform>
+			   <uniform>
+       				  <name>cloudpos2_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos2_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos2_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos2_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos3_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos3_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos3_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos3_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos4_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos4_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos4_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos4_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos5_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos5_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos5_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos5_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos6_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos6_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos6_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos6_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos7_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos7_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos7_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos7_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos8_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos8_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos8_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos8_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos9_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos9_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos9_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos9_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos10_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos10_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos10_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos10_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos11_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos11_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos11_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos11_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos12_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos12_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos12_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos12_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos13_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos13_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos13_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos13_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos14_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos14_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos14_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos14_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos15_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos15_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos15_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos15_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos16_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos16_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos16_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos16_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos17_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos17_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos17_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos17_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos18_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos18_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos18_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos18_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos19_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos19_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos19_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos19_y</use></value>
+      			   </uniform>
+			   <uniform>
+       				  <name>cloudpos20_x</name>
+        			  <type>float</type>
+        		   <value><use>cloudpos20_x</use></value>
+      			   </uniform>
+	  		   <uniform>
+       				  <name>cloudpos20_y</name>
+        			  <type>float</type>
+        			  <value><use>cloudpos20_y</use></value>
+      			   </uniform>
+	  		   <uniform>
+        			  <name>cloud_shadow_flag</name>
+        			  <type>int</type>
+        			  <value><use>cloud_shadow_flag</use></value>
+      			   </uniform>
 			<!-- sea colors -->
 			<uniform>
 				<name>sea_r</name>
diff --git a/Shaders/water_lightfield.frag b/Shaders/water_lightfield.frag
index b53b79f7c..a00b3294a 100644
--- a/Shaders/water_lightfield.frag
+++ b/Shaders/water_lightfield.frag
@@ -62,6 +62,7 @@ uniform float sea_b;
 
 uniform int quality_level;
 uniform int ocean_flag;
+uniform int cloud_shadow_flag;
 
 vec3 specular_light;
 
@@ -72,11 +73,14 @@ const float EarthRadius = 5800000.0;
 ////fog "include" /////
 //uniform int fogType;
 
-vec3 fog_Func(vec3 color, int type);
+//vec3 fog_Func(vec3 color, int type);
+float shadow_func (in float x, in float y, in float noise, in float dist);
 //////////////////////
 
 /////// functions /////////
 
+
+
 float rand2D(in vec2 co){
     return fract(sin(dot(co.xy ,vec2(12.9898,78.233))) * 43758.5453);
 }
@@ -297,6 +301,7 @@ void main(void)
 
 	float noise_50m = Noise3D(rawPos.xyz, 50.0);
 	float noise_250m = Noise3D(rawPos.xyz,250.0);
+        float noise_500m = Noise3D(rawPos.xyz,500.0);
 	float noise_1500m = Noise3D(rawPos.xyz,1500.0);
 	float noise_2000m = Noise3D(rawPos.xyz,2000.0);
 	float noise_2500m = Noise3D(rawPos.xyz, 2500.0);
@@ -531,7 +536,14 @@ void main(void)
    	
 	
 	vec4 finalColor;
-
+	
+	float shadowValue;
+	if (cloud_shadow_flag == 1) 
+		{
+		shadowValue = shadow_func(relPos.x, relPos.y, 0.3 * noise_250m + 0.5 * noise_500m+0.2 * noise_1500m, dist);
+		specular = specular * shadowValue;
+		refl = refl * (0.7 + 0.3 *shadowValue);
+		}
 
 
 	finalColor = refl + specular * smoothstep(0.3, 0.6, ground_scattering);