ALS - begin infrastructure for moonlight perception filtering

Effects/agriculture.eff

@@ -239,6 +239,7 @@
       </texture-unit>
       <program>
         <vertex-shader>Shaders/terrain-ALS-ultra.vert</vertex-shader>
+        <vertex-shader>Shaders/filters-ALS.vert</vertex-shader>
         <fragment-shader>Shaders/agriculture-ALS.frag</fragment-shader>
         <fragment-shader>Shaders/cloud-shadowfunc.frag</fragment-shader>
 	<fragment-shader>Shaders/noise.frag</fragment-shader>

Effects/airfield.eff

@@ -138,6 +138,7 @@
       </texture-unit>
       <program>
         <vertex-shader>Shaders/terrain-ALS-ultra.vert</vertex-shader>
+        <vertex-shader>Shaders/filters-ALS.vert</vertex-shader>
         <fragment-shader>Shaders/airfield-ALS.frag</fragment-shader>
 	<fragment-shader>Shaders/cloud-shadowfunc.frag</fragment-shader>
 	<fragment-shader>Shaders/noise.frag</fragment-shader>

Effects/dirt-runway.eff

@@ -139,6 +139,7 @@
       </texture-unit>
       <program>
         <vertex-shader n="0">Shaders/terrain-ALS-ultra.vert</vertex-shader>
+        <vertex-shader n="1">Shaders/filters-ALS.vert</vertex-shader>
         <fragment-shader n="0">Shaders/drunway-ALS.frag</fragment-shader>        
 	<fragment-shader n="1">Shaders/cloud-shadowfunc.frag</fragment-shader>
 	<fragment-shader n="2">Shaders/noise.frag</fragment-shader>

Effects/grass.eff

@@ -132,6 +132,7 @@
       </texture-unit>
       <program>
         <vertex-shader>Shaders/terrain-ALS-ultra.vert</vertex-shader>
+        <vertex-shader>Shaders/filters-ALS.vert</vertex-shader>
         <fragment-shader>Shaders/airfield-ALS.frag</fragment-shader>
 	<fragment-shader>Shaders/cloud-shadowfunc.frag</fragment-shader>
 	<fragment-shader>Shaders/noise.frag</fragment-shader>

Effects/rock.eff

@@ -88,6 +88,7 @@
       </render-bin>
       <program>
         <vertex-shader>Shaders/terrain-ALS-ultra.vert</vertex-shader>
+        <vertex-shader>Shaders/filters-ALS.vert</vertex-shader>
         <fragment-shader>Shaders/rock-ALS.frag</fragment-shader>
         <fragment-shader>Shaders/cloud-shadowfunc.frag</fragment-shader>
 	<fragment-shader>Shaders/noise.frag</fragment-shader>

Effects/runway.eff

@@ -203,6 +203,7 @@
       </texture-unit>
       <program>
         <vertex-shader n="0">Shaders/terrain-ALS-ultra.vert</vertex-shader>
+        <vertex-shader n="1">Shaders/filters-ALS.vert</vertex-shader>
         <fragment-shader n="0">Shaders/runway-ALS.frag</fragment-shader>        
 	<fragment-shader n="1">Shaders/cloud-shadowfunc.frag</fragment-shader>
 	<fragment-shader n="2">Shaders/noise.frag</fragment-shader>

Effects/terrain-default.eff

@@ -311,6 +311,7 @@
       </texture-unit>
       <program>
         <vertex-shader>Shaders/terrain-ALS-ultra.vert</vertex-shader>
+        <vertex-shader>Shaders/filters-ALS.vert</vertex-shader>
         <fragment-shader>Shaders/terrain-ALS-ultra.frag</fragment-shader>
         <fragment-shader>Shaders/noise.frag</fragment-shader>
         <fragment-shader>Shaders/cloud-shadowfunc.frag</fragment-shader>
@@ -932,6 +933,7 @@
       </texture-unit>
       <program>
         <vertex-shader>Shaders/terrain-ALS-detailed.vert</vertex-shader>
+        <vertex-shader>Shaders/filters-ALS.vert</vertex-shader>
         <fragment-shader>Shaders/terrain-ALS-detailed.frag</fragment-shader>
         <fragment-shader>Shaders/noise.frag</fragment-shader>
         <fragment-shader>Shaders/hazes.frag</fragment-shader>

Shaders/filters-ALS.frag

@@ -67,6 +67,12 @@ return vec3 (0.7, 0.7, 0.7) * gain;
 }
 
 
+vec3 moonlight_perception (in vec3 light) {
+
+return light;
+
+}
+
 
 vec3 g_force (in vec3 color) {
 

Shaders/filters-ALS.vert

@@ -0,0 +1,11 @@
+// -*-C++-*-
+
+// This is a library of filter functions for the vertex shader
+
+// Thorsten Renk 2017
+
+vec3 moonlight_perception (in vec3 light) {
+
+return light;
+
+}

Shaders/model-ALS-ultra.frag

@@ -114,6 +114,7 @@ vec3 get_hazeColor(in float lightArg);
 vec3 searchlight();
 vec3 landing_light(in float offset, in float offsetv);
 vec3 filter_combined (in vec3 color) ;
+vec3 moonlight_perception (in vec3 light) ;
 vec3 addLights(in vec3 color1, in vec3 color2);
 
 
@@ -147,6 +148,7 @@ 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);
 

Shaders/space-ALS-ultra.frag

@@ -122,6 +122,9 @@ vec3 searchlight();
 vec3 landing_light(in float offset, in float offsetv);
 vec3 addLights(in vec3 color1, in vec3 color2);
 vec4 color_temperature (in float T);
+vec3 filter_combined (in vec3 color) ;
+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)
     {
@@ -151,6 +154,7 @@ 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);
 

Shaders/terrain-ALS-detailed.vert

@@ -54,6 +54,8 @@ float yprime_alt;
 const float EarthRadius = 5800000.0;
 const float terminator_width = 200000.0;
 
+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)
 {
 //x = x - 0.5;
@@ -72,6 +74,7 @@ void main()
   vec4 light_ambient;
   vec3 shadedFogColor = vec3(0.55, 0.67, 0.88);
   vec3 moonLightColor = vec3 (0.095, 0.095, 0.15) * moonlight;
+  moonLightColor = moonlight_perception (moonLightColor);
 
   //float yprime_alt;
   float yprime;

Shaders/terrain-ALS-ultra.vert

@@ -51,7 +51,7 @@ uniform mat4 osg_ViewMatrixInverse;
 float earthShade;
 float yprime_alt;
 
-
+vec3 moonlight_perception (in vec3 light);
 
 // This is the value used in the skydome scattering shader - use the same here for consistency?
 const float EarthRadius = 5800000.0;
@@ -77,6 +77,9 @@ void main()
   vec3 shadedFogColor = vec3(0.55, 0.67, 0.88);
   vec3 moonLightColor = vec3 (0.095, 0.095, 0.15) * moonlight + vec3 (0.005, 0.005, 0.005);
 
+  moonLightColor = moonlight_perception (moonLightColor);
+
+
   //float yprime_alt;
   float yprime;
   float lightArg;