More infrastructure for perception filtering of moonlight

Effects/cloud-impostor.eff

@@ -70,6 +70,7 @@
       </texture-unit>
       <program>
         <vertex-shader>Shaders/cloud-impostor-ALS.vert</vertex-shader>
+        <vertex-shader>Shaders/filters-ALS.vert</vertex-shader>
         <fragment-shader>Shaders/cloud-static-ALS.frag</fragment-shader>
  	<fragment-shader>Shaders/noise.frag</fragment-shader>
         <fragment-shader>Shaders/filters-ALS.frag</fragment-shader>

Effects/cloud-noctilucent.eff

@@ -57,6 +57,7 @@
       </texture-unit>
       <program>
         <vertex-shader>Shaders/cloud-noctilucent-ALS.vert</vertex-shader>
+        <vertex-shader>Shaders/filters-ALS.vert</vertex-shader>
         <fragment-shader>Shaders/cloud-static-ALS.frag</fragment-shader>
       </program>
       <uniform>

Effects/cloud-static.eff

@@ -67,6 +67,7 @@
       </texture-unit>
       <program>
         <vertex-shader>Shaders/cloud-static-ALS.vert</vertex-shader>
+        <vertex-shader>Shaders/filters-ALS.vert</vertex-shader>
         <fragment-shader>Shaders/cloud-static-ALS.frag</fragment-shader>
  	<fragment-shader>Shaders/noise.frag</fragment-shader>
         <fragment-shader>Shaders/filters-ALS.frag</fragment-shader>

Effects/cloud.eff

@@ -72,6 +72,7 @@
       </texture-unit>
       <program>
         <vertex-shader>Shaders/3dcloud-ALS.vert</vertex-shader>
+        <vertex-shader>Shaders/filters-ALS.vert</vertex-shader>
         <fragment-shader>Shaders/3dcloud-ALS.frag</fragment-shader>
         <fragment-shader>Shaders/filters-ALS.frag</fragment-shader>
 	<fragment-shader>Shaders/noise.frag</fragment-shader>

Shaders/3dcloud-ALS.vert

@@ -30,6 +30,8 @@ float top_factor = usrAttr2.b;
 
 const float EarthRadius = 5800000.0;
 
+vec3 moonlight_perception (in vec3 light);
+
 // light_func is a generalized logistic function fit to the light intensity as a function
 // of scaled terminator position obtained from Flightgear core
 
@@ -68,6 +70,8 @@ void main(void)
 
   vec3 shadedFogColor = vec3(0.55, 0.67, 0.88); 
   vec3 moonLightColor = vec3 (0.095, 0.095, 0.15) * moonlight * scattering;
+  moonLightColor = moonlight_perception (moonLightColor);
+
   gl_TexCoord[0] = gl_MultiTexCoord0;
   vec4 ep = gl_ModelViewMatrixInverse * vec4(0.0,0.0,0.0,1.0);
   vec4 l  = gl_ModelViewMatrixInverse * vec4(0.0,0.0,1.0,1.0);

Shaders/cloud-impostor-ALS.vert

@@ -16,6 +16,8 @@ const float shade = 1.0;
 const float cloud_height = 1000.0;
 const float EarthRadius = 5800000.0;
 
+vec3 moonlight_perception (in vec3 light);
+
 // light_func is a generalized logistic function fit to the light intensity as a function
 // of scaled terminator position obtained from Flightgear core
 
@@ -36,6 +38,7 @@ void main(void)
 
   vec3 shadedFogColor = vec3 (0.55, 0.67, 0.88);
   vec3 moonLightColor = vec3 (0.095, 0.095, 0.15) * moonlight;
+  moonLightColor = moonlight_perception (moonLightColor);
 
   gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
   //gl_TexCoord[0] = gl_MultiTexCoord0 + vec4(textureIndexX, textureIndexY, 0.0, 0.0);

Shaders/cloud-noctilucent-ALS.vert

@@ -13,6 +13,8 @@ const float shade = 1.0;
 const float cloud_height = 1000.0;
 const float EarthRadius = 5800000.0;
 
+vec3 moonlight_perception (in vec3 light);
+
 // light_func is a generalized logistic function fit to the light intensity as a function
 // of scaled terminator position obtained from Flightgear core
 
@@ -33,6 +35,7 @@ void main(void)
 
   vec3 shadedFogColor = vec3 (0.55, 0.67, 0.88);
   vec3 moonLightColor = vec3 (0.095, 0.095, 0.15) * moonlight;
+  moonLightColor = moonlight_perception (moonLightColor);
 
   gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
   //gl_TexCoord[0] = gl_MultiTexCoord0 + vec4(textureIndexX, textureIndexY, 0.0, 0.0);

Shaders/cloud-static-ALS.vert

@@ -13,6 +13,8 @@ const float shade = 1.0;
 const float cloud_height = 1000.0;
 const float EarthRadius = 5800000.0;
 
+vec3 moonlight_perception (in vec3 light);
+
 // light_func is a generalized logistic function fit to the light intensity as a function
 // of scaled terminator position obtained from Flightgear core
 
@@ -33,6 +35,7 @@ void main(void)
 
   vec3 shadedFogColor = vec3 (0.55, 0.67, 0.88);
   vec3 moonLightColor = vec3 (0.095, 0.095, 0.15) * moonlight;
+  moonLightColor = moonlight_perception (moonLightColor);
 
   gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
   //gl_TexCoord[0] = gl_MultiTexCoord0 + vec4(textureIndexX, textureIndexY, 0.0, 0.0);

Shaders/planet-cloudlayer.frag

@@ -25,6 +25,7 @@ uniform sampler2D structure_texture;
 
 float Noise2D(in vec2 coord, in float wavelength);
 vec3 filter_combined (in vec3 color) ;
+vec3 moonlight_perception (in vec3 light);
 
 
 float add_cosines (in float cos1, in float cos2, in float sign)
@@ -140,6 +141,7 @@ void main()
 	color.rgb += lightning_color(gl_TexCoord[0].st) * (1.0 - texel.a) * lightning * darkness_fact;
 	
 	vec3 moonLightColor = vec3 (0.095, 0.095, 0.15) * moonlight;
+  	moonLightColor = moonlight_perception (moonLightColor);
 	
 	color.rgb += moonLightColor;
     

Shaders/planet-high.frag

@@ -22,6 +22,7 @@ uniform sampler2D normal_texture;
 
 float Noise2D(in vec2 coord, in float wavelength);
 vec3 filter_combined (in vec3 color) ;
+vec3 moonlight_perception (in vec3 light);
 
 
 void main()
@@ -136,6 +137,7 @@ void main()
     }
 	
     vec3 moonLightColor = vec3 (0.095, 0.095, 0.15) * moonlight;
+    moonLightColor = moonlight_perception (moonLightColor);	
     color.rgb += moonLightColor;
 	
     color.a = diffuse_term.a;

Shaders/road-ALS-ultra.frag

@@ -112,6 +112,7 @@ vec3 searchlight();
 vec3 landing_light(in float offset, in float offsetv);
 vec3 filter_combined (in vec3 color) ;
 vec3 addLights(in vec3 color1, in vec3 color2);
+vec3 moonlight_perception (in vec3 light);
 
 
 float light_func (in float x, in float a, in float b, in float c, in float d, in float e)
@@ -216,6 +217,7 @@ void main (void)
     ///some generic light scattering parameters 
     vec3 shadedFogColor = vec3(0.55, 0.67, 0.88);
     vec3 moonLightColor = vec3 (0.095, 0.095, 0.15) * moonlight;
+    moonLightColor = moonlight_perception (moonLightColor);	
     float alt = eye_alt; 					
     float effective_scattering = min(scattering, cloud_self_shading);