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WS30: Road Shader porting from osm2city

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This commit is contained in:
Stuart Buchanan 2022-01-12 21:32:55 +00:00
parent c7b73ff91b
commit b35f5d6db2
5 changed files with 1552 additions and 24 deletions
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13
Effects/ws30-road-high.eff
View file

@ -1,20 +1,9 @@
<?xml version="1.0" encoding="utf-8"?>
<PropertyList>
<name>Effects/ws30-road-high</name>
<inherits-from>Effects/terrain-default</inherits-from>
<inherits-from>Effects/ws30-road</inherits-from>
<parameters>
<speed-factor>1.2</speed-factor>
<base-density>3.0</base-density>
</parameters>
<technique n="3">
<!-- Disable the ultra technique as it doesn't work in WS30-->
<predicate n="0">
<and>
<equal>
<value type="float">2.0</value>
<value type="float">1.0</value>
</equal>
</and>
</predicate>
</technique>
</PropertyList>

13
Effects/ws30-road-mid.eff
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@ -1,20 +1,9 @@
<?xml version="1.0" encoding="utf-8"?>
<PropertyList>
<name>Effects/ws30-road-mid</name>
<inherits-from>Effects/terrain-default</inherits-from>
<inherits-from>Effects/ws30-road</inherits-from>
<parameters>
<speed-factor>0.8</speed-factor>
<base-density>0.25</base-density>
</parameters>
<technique n="3">
<!-- Disable the ultra technique as it doesn't work in WS30-->
<predicate n="0">
<and>
<equal>
<value type="float">2.0</value>
<value type="float">1.0</value>
</equal>
</and>
</predicate>
</technique>
</PropertyList>

813
Effects/ws30-road.eff Normal file
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@ -0,0 +1,813 @@
<?xml version="1.0" encoding="utf-8"?>
<PropertyList>
<name>Effects/ws30-road</name>
<inherits-from>Effects/terrain-default</inherits-from>
<parameters>
<material>
<ambient type="vec4d">
0.2 .2 0.2 1.0
</ambient>
<diffuse type="vec4d">
.8 .8 .8 1.0
</diffuse>
<specular type="vec4d">
0.0 0.0 0.0 1.0
</specular>
<emissive type="vec4d">
0.0 0.0 0.0 1.0
</emissive>
<shininess>1.2</shininess>
<color-mode>diffuse</color-mode>
</material>
<texture n="2">
<image>Textures/osm2city/roads_LM.png</image>
<type>2d</type>
<filter>linear-mipmap-linear</filter>
<wrap-s>repeat</wrap-s>
<wrap-t>repeat</wrap-t>
<internal-format>normalized</internal-format>
</texture>
<texture n="8">
<image>Textures/Cars/cars.png</image>
<type>2d</type>
<filter>linear-mipmap-linear</filter>
<wrap-s>repeat</wrap-s>
<wrap-t>repeat</wrap-t>
<internal-format>normalized</internal-format>
</texture>
<texture n="9">
<image>Textures/Cars/cars-metadata.png</image>
<type>2d</type>
<filter>linear-mipmap-linear</filter>
<wrap-s>repeat</wrap-s>
<wrap-t>repeat</wrap-t>
<internal-format>normalized</internal-format>
</texture>
<grain-texture-enabled type="int">0</grain-texture-enabled>
<grain-magnification type="float">50</grain-magnification>
<lightmap-enabled type="int">1</lightmap-enabled>
<normalmap-enabled>0</normalmap-enabled>
<lightmap-color type="vec3d" n="0"> 0.941 0.682 0.086 </lightmap-color>
<snow_level><use>/environment/snow-level-m</use></snow_level>
<snow_thickness_factor><use>/environment/surface/snow-thickness-factor</use></snow_thickness_factor>
<road-traffic-enabled><use>/sim/rendering/osm/road-traffic-enabled</use></road-traffic-enabled>
<road-traffic-density><use>/sim/rendering/osm/road-traffic-density</use></road-traffic-density>
<road-traffic-direction><use>/sim/rendering/osm/road-traffic-direction</use></road-traffic-direction>
<road-traffic-variation><use>/sim/rendering/osm/road-traffic-daily-variation</use></road-traffic-variation>
<road-light-factor><use>/environment/lightmap-factor</use></road-light-factor>
</parameters>
<generate>
<tangent type="int">6</tangent>
<binormal type="int">7</binormal>
</generate>
<technique n="3">
<predicate>
<and>
<property>/sim/rendering/shaders/skydome</property>
<property>/sim/rendering/shaders/model</property>
<or>
<less-equal>
<value type="float">2.0</value>
<glversion/>
</less-equal>
<and>
<extension-supported>GL_ARB_shader_objects</extension-supported>
<extension-supported>GL_ARB_shading_language_100</extension-supported>
<extension-supported>GL_ARB_vertex_shader</extension-supported>
<extension-supported>GL_ARB_fragment_shader</extension-supported>
</and>
</or>
</and>
</predicate>
<pass>
<lighting>true</lighting>
<material>
<active>
<use>material/active</use>
</active>
<ambient>
<use>material/ambient</use>
</ambient>
<diffuse>
<use>material/diffuse</use>
</diffuse>
<specular>
<use>material/specular</use>
</specular>
<emissive>
<use>material/emissive</use>
</emissive>
<shininess>
<use>material/shininess</use>
</shininess>
<color-mode>
<use>material/color-mode</use>
</color-mode>
</material>
<blend>
<active>
<use>blend/active</use>
</active>
<source>
<use>blend/source</use>
</source>
<destination>
<use>blend/destination</use>
</destination>
</blend>
<shade-model>
<use>shade-model</use>
</shade-model>
<cull-face>
<use>cull-face</use>
</cull-face>
<rendering-hint>
<use>rendering-hint</use>
</rendering-hint>
<blend>
<use>transparent</use>
</blend>
<alpha-test>
<use>transparent</use>
</alpha-test>
<render-bin>
<bin-number>
<use>render-bin/bin-number</use>
</bin-number>
<bin-name>
<use>render-bin/bin-name</use>
</bin-name>
</render-bin>
<!-- Diffuse texture unit-->
<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>
<!-- Car Metadata texture unit-->
<texture-unit>
<unit>1</unit>
<image>
<use>texture[9]/image</use>
</image>
<type>
<use>texture[9]/type</use>
</type>
<filter>
<use>texture[9]/filter</use>
</filter>
<wrap-s>
<use>texture[9]/wrap-s</use>
</wrap-s>
<wrap-t>
<use>texture[9]/wrap-t</use>
</wrap-t>
<internal-format>
<use>texture[9]/internal-format</use>
</internal-format>
</texture-unit>
<!-- Car shape texture unit-->
<texture-unit>
<unit>3</unit>
<image>
<use>texture[8]/image</use>
</image>
<type>
<use>texture[8]/type</use>
</type>
<filter>
<use>texture[8]/filter</use>
</filter>
<wrap-s>
<use>texture[8]/wrap-s</use>
</wrap-s>
<wrap-t>
<use>texture[8]/wrap-t</use>
</wrap-t>
<internal-format>
<use>texture[8]/internal-format</use>
</internal-format>
</texture-unit>
<vertex-program-two-side>
<use>vertex-program-two-side</use>
</vertex-program-two-side>
<program>
<vertex-shader>Shaders/ws30-ALS-ultra.vert</vertex-shader>
<vertex-shader>Shaders/filters-ALS.vert</vertex-shader>
<vertex-shader>Shaders/shadows-include.vert</vertex-shader>
<fragment-shader>Shaders/road-ALS-ultra.frag</fragment-shader>
<fragment-shader>Shaders/cloud-shadowfunc.frag</fragment-shader>
<fragment-shader>Shaders/hazes.frag</fragment-shader>
<fragment-shader>Shaders/secondary_lights.frag</fragment-shader>
<fragment-shader>Shaders/noise.frag</fragment-shader>
<fragment-shader>Shaders/filters-ALS.frag</fragment-shader>
<fragment-shader>Shaders/shadows-include.frag</fragment-shader>
<fragment-shader>Shaders/clustered-include.frag</fragment-shader>
<attribute>
<name>tangent</name>
<index>6</index>
</attribute>
<attribute>
<name>binormal</name>
<index>7</index>
</attribute>
<attribute>
<name>orthophotoTexCoord</name>
<index>14</index>
</attribute>
</program>
<uniform>
<name>BaseTex</name>
<type>sampler-2d</type>
<value type="int">0</value>
</uniform>
<uniform>
<name>CarMetaTex</name>
<type>sampler-2d</type>
<value type="int">1</value>
</uniform>
<uniform>
<name>NormalTex</name>
<type>sampler-2d</type>
<value type="int">2</value>
</uniform>
<uniform>
<name>CarTex</name>
<type>sampler-2d</type>
<value type="int">3</value>
</uniform>
<!-- road traffic -->
<uniform>
<name>road_traffic_enabled</name>
<type>int</type>
<value>
<use>road-traffic-enabled</use>
</value>
</uniform>
<uniform>
<name>road_traffic_density</name>
<type>float</type>
<value>
<use>road-traffic-density</use>
</value>
</uniform>
<uniform>
<name>road_traffic_variation</name>
<type>float</type>
<value>
<use>road-traffic-variation</use>
</value>
</uniform>
<uniform>
<name>road_traffic_direction</name>
<type>int</type>
<value>
<use>road-traffic-direction</use>
</value>
</uniform>
<!-- road illumination -->
<uniform>
<name>streetlight_color</name>
<type>float-vec3</type>
<value>
<use>lightmap-color</use>
</value>
</uniform>
<uniform>
<name>streetlight_factor</name>
<type>float</type>
<value>
<use>road-light-factor</use>
</value>
</uniform>
<!-- use a grain texture map-->
<uniform>
<name>grain_texture_enabled</name>
<type>int</type>
<value>
<use>grain-texture-enabled</use>
</value>
</uniform>
<uniform>
<name>grain_magnification</name>
<type>float</type>
<value>
<use>grain-magnification</use>
</value>
</uniform>
<!-- simulate wetness, snow and rain-->
<uniform>
<name>rain_enabled</name>
<type>int</type>
<value>
<use>rain-enabled</use>
</value>
</uniform>
<uniform>
<name>snowlevel</name>
<type>float</type>
<value><use>snow_level</use></value>
</uniform>
<uniform>
<name>snow_thickness_factor</name>
<type>float</type>
<value><use>snow_thickness_factor</use></value>
</uniform>
<!-- set the amount of ambient light correction 0.0 - 1.0 -->
<uniform>
<name>amb_correction</name>
<type>float</type>
<value>
<use>ambient-correction</use>
</value>
</uniform>
<uniform>
<name>hdg</name>
<type>float</type>
<value>
<use>model-hdg</use>
</value>
</uniform>
<uniform>
<name>pitch</name>
<type>float</type>
<value>
<use>model-pitch</use>
</value>
</uniform>
<uniform>
<name>roll</name>
<type>float</type>
<value>
<use>model-roll</use>
</value>
</uniform>
<!-- BEGIN fog include -->
<uniform>
<name>visibility</name>
<type>float</type>
<value>
<use>visibility</use>
</value>
</uniform>
<uniform>
<name>avisibility</name>
<type>float</type>
<value>
<use>avisibility</use>
</value>
</uniform>
<uniform>
<name>hazeLayerAltitude</name>
<type>float</type>
<value>
<use>lthickness</use>
</value>
</uniform>
<uniform>
<name>scattering</name>
<type>float</type>
<value>
<use>scattering</use>
</value>
</uniform>
<uniform>
<name>terminator</name>
<type>float</type>
<value>
<use>terminator</use>
</value>
</uniform>
<uniform>
<name>ground_scattering</name>
<type>float</type>
<value>
<use>ground_scattering</use>
</value>
</uniform>
<uniform>
<name>terminator</name>
<type>float</type>
<value>
<use>terminator</use>
</value>
</uniform>
<uniform>
<name>terrain_alt</name>
<type>float</type>
<value>
<use>terrain_alt</use>
</value>
</uniform>
<uniform>
<name>overcast</name>
<type>float</type>
<value>
<use>overcast</use>
</value>
</uniform>
<uniform>
<name>eye_alt</name>
<type>float</type>
<value>
<use>eye_alt</use>
</value>
</uniform>
<uniform>
<name>cloud_self_shading</name>
<type>float</type>
<value><use>cloud_self_shading</use></value>
</uniform>
<uniform>
<name>moonlight</name>
<type>float</type>
<value><use>moonlight</use></value>
</uniform>
<uniform>
<name>air_pollution</name>
<type>float</type>
<value><use>air_pollution</use></value>
</uniform>
<uniform>
<name>rain_norm</name>
<type>float</type>
<value><use>rnorm</use></value>
</uniform>
<uniform>
<name>wetness</name>
<type>float</type>
<value><use>wetness</use></value>
</uniform>
<uniform>
<name>view_pitch_offset</name>
<type>float</type>
<value><use>view_pitch_offset</use></value>
</uniform>
<uniform>
<name>view_heading_offset</name>
<type>float</type>
<value><use>view_heading_offset</use></value>
</uniform>
<uniform>
<name>field_of_view</name>
<type>float</type>
<value><use>view_fov</use></value>
</uniform>
<uniform>
<name>landing_light1_offset</name>
<type>float</type>
<value><use>landing_light1_offset</use></value>
</uniform>
<uniform>
<name>landing_light2_offset</name>
<type>float</type>
<value><use>landing_light2_offset</use></value>
</uniform>
<uniform>
<name>landing_light3_offset</name>
<type>float</type>
<value><use>landing_light3_offset</use></value>
</uniform>
<uniform>
<name>gamma</name>
<type>float</type>
<value><use>gamma</use></value>
</uniform>
<uniform>
<name>brightness</name>
<type>float</type>
<value><use>brightness</use></value>
</uniform>
<uniform>
<name>use_filtering</name>
<type>bool</type>
<value><use>use_filtering</use></value>
</uniform>
<uniform>
<name>use_night_vision</name>
<type>bool</type>
<value><use>use_night_vision</use></value>
</uniform>
<uniform>
<name>use_IR_vision</name>
<type>bool</type>
<value><use>use_IR_vision</use></value>
</uniform>
<uniform>
<name>delta_T</name>
<type>float</type>
<value><use>delta_T</use></value>
</uniform>
<uniform>
<name>fact_grey</name>
<type>float</type>
<value><use>fact_grey</use></value>
</uniform>
<uniform>
<name>fact_black</name>
<type>float</type>
<value><use>fact_black</use></value>
</uniform>
<!-- cloud shadows -->
<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>
<uniform>
<name>use_searchlight</name>
<type>int</type>
<value><use>use_searchlight</use></value>
</uniform>
<uniform>
<name>use_landing_light</name>
<type>int</type>
<value><use>use_landing_light</use></value>
</uniform>
<uniform>
<name>use_alt_landing_light</name>
<type>int</type>
<value><use>use_alt_landing_light</use></value>
</uniform>
<uniform>
<name>display_xsize</name>
<type>int</type>
<value><use>display_xsize</use></value>
</uniform>
<uniform>
<name>display_ysize</name>
<type>int</type>
<value><use>display_ysize</use></value>
</uniform>
<!-- BEGIN shadows include -->
<uniform>
<name>shadow_tex</name>
<type>sampler-2d</type>
<value type="int">10</value>
</uniform>
<uniform>
<name>shadows_enabled</name>
<type>bool</type>
<value>
<use>shadows_enabled</use>
</value>
</uniform>
<uniform>
<name>sun_atlas_size</name>
<type>int</type>
<value>
<use>sun_atlas_size</use>
</value>
</uniform>
<!-- END shadows include -->
</pass>
</technique>
</PropertyList>

2
Shaders/ws30-ALS-ultra.vert
View file

@ -30,6 +30,7 @@ varying vec3 worldPos;
varying vec3 ecViewdir;
varying vec2 grad_dir;
varying vec4 ecPosition;
varying vec3 vertVec;
// Sent packed into alpha channels
//varying float yprime_alt;
@ -198,6 +199,7 @@ void main()
*/
relPos = relPosZUp;
vertVec = relPosZUp;
ecViewdir = (gl_ModelViewMatrix * (epMS - gl_Vertex)).xyz;
// unfortunately, we need the distance in the vertex shader, although the more accurate version

735
Shaders/ws30-road-ALS-ultra.frag Normal file
View file

@ -0,0 +1,735 @@
// -*- mode: C; -*-
// Licence: GPL v2
// Authors: Frederic Bouvier and Gijs de Rooy
// with major additions and revisions by
// Emilian Huminiuc and Vivian Meazza 2011
// ported to Atmospheric Light Scattering
// by Thorsten Renk, 2013
// changes for road and traffic rendering
// by Thorsten Renk 2017 -2019
#version 120
varying vec3 VBinormal;
varying vec3 VNormal;
varying vec3 VTangent;
varying vec3 rawpos;
//varying vec3 reflVec;
//varying vec3 vViewVec;
varying vec3 vertVec;
varying vec3 relPos;
varying float alpha;
uniform sampler2D BaseTex;
//uniform sampler2D NormalTex;
//uniform sampler2D ReflMapTex;
uniform sampler2D CarTex;
uniform sampler2D CarMetaTex;
//uniform sampler2D ReflGradientsTex;
//uniform samplerCube Environment;
//uniform sampler2D GrainTex;
//uniform int dirt_enabled;
//uniform int dirt_multi;
//uniform int nmap_dds;
//uniform int nmap_enabled;
//uniform int refl_enabled;
//uniform int refl_type;
//uniform int refl_map;
//uniform int grain_texture_enabled;
uniform int road_traffic_direction;
//uniform int rain_enabled;
uniform int road_traffic_enabled;
uniform int cloud_shadow_flag;
uniform int use_searchlight;
uniform int use_landing_light;
uniform int use_alt_landing_light;
uniform float amb_correction;
uniform float dirt_b_factor;
uniform float dirt_g_factor;
uniform float dirt_r_factor;
//uniform float nmap_tile;
//uniform float refl_correction;
//uniform float refl_fresnel;
//uniform float refl_fresnel_factor;
//uniform float refl_noise;
//uniform float refl_rainbow;
//uniform float grain_magnification;
//uniform float wetness;
//uniform float rain_norm;
uniform float road_traffic_density;
uniform float streetlight_factor;
uniform float road_traffic_variation;
uniform float avisibility;
uniform float cloud_self_shading;
uniform float eye_alt;
uniform float ground_scattering;
uniform float hazeLayerAltitude;
uniform float moonlight;
uniform float overcast;
uniform float scattering;
uniform float terminator;
uniform float terrain_alt;
uniform float visibility;
uniform float air_pollution;
uniform float snowlevel;
uniform float snow_thickness_factor;
uniform float osg_SimulationTime;
uniform float landing_light1_offset;
uniform float landing_light2_offset;
uniform float landing_light3_offset;
uniform bool use_IR_vision;
uniform mat4 fg_zUpTransform;
uniform vec3 fg_modelOffset;
// constants needed by the light and fog computations ###################################################
const float EarthRadius = 5800000.0;
const float terminator_width = 200000.0;
//uniform vec3 dirt_r_color;
//uniform vec3 dirt_g_color;
//uniform vec3 dirt_b_color;
uniform vec3 streetlight_color;
float DotNoise2D(in vec2 coord, in float wavelength, in float fractionalMaxDotSize, in float dot_density);
float shadow_func (in float x, in float y, in float noise, in float dist);
float fog_func (in float targ, in float altitude);
float rayleigh_in_func(in float dist, in float air_pollution, in float avisibility, in float eye_alt, in float vertex_alt);
float alt_factor(in float eye_alt, in float vertex_alt);
float light_distance_fading(in float dist);
float fog_backscatter(in float avisibility);
float rand2D(in vec2 co);
float Noise2D(in vec2 coord, in float wavelength);
vec3 rayleigh_out_shift(in vec3 color, in float outscatter);
vec3 get_hazeColor(in float lightArg);
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);
float getShadowing();
vec3 getClusteredLightsContribution(vec3 p, vec3 n, vec3 texel);
float light_func (in float x, in float a, in float b, in float c, in float d, in float e)
{
if (x > 30.0) {return e;}
if (x < -15.0) {return 0.0;}
return e / pow((1.0 + a * exp(-b * (x-c)) ),(1.0/d));
}
void road_type_mapper (in vec2 coord, out float rtype_traffic_density, out float rtype_base_illumination, out float rtype_traffic_speed, out int rtype_dual_lane)
{
if (coord.s < 0.125) // railway
{
rtype_dual_lane = 0;
rtype_traffic_density = 0;
rtype_base_illumination = 0;
rtype_traffic_speed = 0.0;
}
else if (coord.s < 0.250) // residential
{
rtype_dual_lane = 0;
rtype_traffic_density = 0.3;
rtype_base_illumination = 0.65;
rtype_traffic_speed = 0.5;
}
else if (coord.s < 0.375) // single-lane major
{
rtype_dual_lane = 0;
rtype_traffic_density = 1.0;
rtype_base_illumination = 0.65;
rtype_traffic_speed = 1.0;
}
else if (coord.s < 0.5)
{
rtype_dual_lane = 0;
rtype_traffic_density = 0.0;
rtype_base_illumination = 0.0;
rtype_traffic_speed = 0.0;
}
else if (coord.s < 0.625) // grass
{
rtype_dual_lane = 0;
rtype_traffic_density = 0.0;
rtype_base_illumination = 0.0;
rtype_traffic_speed = 0.0;
}
else if (coord.s < 0.750) // dual-lane highway
{
rtype_dual_lane = 1;
rtype_traffic_density = 1.0;
rtype_base_illumination = 0.0;
rtype_traffic_speed = 1.0;
}
else if (coord.s < 0.875) // dirt
{
rtype_dual_lane = 0;
rtype_traffic_density = 0.1;
rtype_base_illumination = 0.0;
rtype_traffic_speed = 0.3;
}
else // tramway
{
rtype_dual_lane = 0;
rtype_traffic_density = 0.0;
rtype_base_illumination = 0.0;
rtype_traffic_speed = 0.0;
}
}
void main (void)
{
vec4 texel = texture2D(BaseTex, gl_TexCoord[0].st);
vec4 noisevec = vec4 (1.0, 1.0, 1.0, 1.0);
vec4 grainTexel;
vec3 mixedcolor;
vec3 N = vec3(0.0,0.0,1.0);
// noise
float noise_1m = Noise2D(rawpos.xy, 1.0);
float noise_5m = Noise2D(rawpos.xy, 5.0);
// road type characteristics
float rtype_traffic_density = 0.0;
float rtype_base_illumination = 0.0;
float rtype_traffic_speed = 0.0;
int rtype_dual_lane = 0;
road_type_mapper (gl_TexCoord[0].st, rtype_traffic_density, rtype_base_illumination, rtype_traffic_speed, rtype_dual_lane);
float pf = 0.0;
float pf1 = 0.0;
///some generic light scattering parameters
vec3 shadedFogColor = vec3(0.55, 0.67, 0.88);
vec3 moonLightColor = vec3 (0.095, 0.095, 0.15) * moonlight;
float alt = eye_alt;
float effective_scattering = min(scattering, cloud_self_shading);
/// BEGIN geometry for light
vec3 up = (gl_ModelViewMatrix * vec4(0.0,0.0,1.0,0.0)).xyz;
vec3 nVertVec = normalize(vertVec);
float dist = length(relPos);
// angle of view vector with horizon
float ct = dot(vec3(0.0, 0.0, 1.0), relPos)/dist;
float vertex_alt = (relPos.z + eye_alt);
float vertex_scattering = ground_scattering + (1.0 - ground_scattering) * smoothstep(hazeLayerAltitude -100.0, hazeLayerAltitude + 100.0, vertex_alt);
vec3 lightHorizon = gl_LightSource[0].position.xyz - up * dot(up,gl_LightSource[0].position.xyz);
float yprime = -dot(vertVec, lightHorizon);
float yprime_alt = yprime - sqrt(2.0 * EarthRadius * vertex_alt);
float lightArg = (terminator-yprime_alt)/100000.0;
float earthShade = 0.6 * (1.0 - smoothstep(-terminator_width+ terminator, terminator_width + terminator, yprime_alt)) + 0.4;
float mie_angle = gl_Color.a;
float fog_vertex_alt = max(vertex_alt,hazeLayerAltitude);
float fog_yprime_alt = yprime_alt;
if (fog_vertex_alt > hazeLayerAltitude)
{
if (dist > 0.8 * avisibility)
{
fog_vertex_alt = mix(fog_vertex_alt, hazeLayerAltitude, smoothstep(0.8*avisibility, avisibility, dist));
fog_yprime_alt = yprime -sqrt(2.0 * EarthRadius * fog_vertex_alt);
}
}
else
{
fog_vertex_alt = hazeLayerAltitude;
fog_yprime_alt = yprime -sqrt(2.0 * EarthRadius * fog_vertex_alt);
}
float fog_lightArg = (terminator-fog_yprime_alt)/100000.0;
float fog_earthShade = 0.9 * smoothstep(terminator_width+ terminator, -terminator_width + terminator, fog_yprime_alt) + 0.1;
/// END geometry for light
/// BEGIN light
vec4 light_diffuse;
vec4 light_ambient;
float intensity;
light_diffuse.b = light_func(lightArg, 1.330e-05, 0.264, 3.827, 1.08e-05, 1.0);
light_diffuse.g = light_func(lightArg, 3.931e-06, 0.264, 3.827, 7.93e-06, 1.0);
light_diffuse.r = light_func(lightArg, 8.305e-06, 0.161, 3.827, 3.04e-05, 1.0);
light_diffuse.a = 1.0;
light_diffuse = light_diffuse * vertex_scattering;
light_ambient.r = light_func(lightArg, 0.236, 0.253, 1.073, 0.572, 0.33);
light_ambient.g = light_ambient.r * 0.4/0.33;
light_ambient.b = light_ambient.r * 0.5/0.33;
light_ambient.a = 1.0;
if (earthShade < 0.5)
{
intensity = length(light_ambient.rgb);
light_ambient.rgb = intensity * normalize(mix(light_ambient.rgb, shadedFogColor, 1.0 -smoothstep(0.1, 0.8,earthShade) ));
light_ambient.rgb = light_ambient.rgb + moonLightColor * (1.0 - smoothstep(0.4, 0.5, earthShade));
intensity = length(light_diffuse.rgb);
light_diffuse.rgb = intensity * normalize(mix(light_diffuse.rgb, shadedFogColor, 1.0 -smoothstep(0.1, 0.7,earthShade) ));
}
vec4 ep = gl_ModelViewMatrixInverse * vec4(0.0,0.0,0.0,1.0);
vec3 ecViewDir = (gl_ModelViewMatrix * (ep - vec4(rawpos, 1.0))).xyz;
vec3 HV = normalize(normalize(gl_LightSource[0].position.xyz) + normalize(ecViewDir));
/// END light
/// BEGIN procedural textures - cars and snow
vec2 roadCoords = gl_TexCoord[0].st;
roadCoords.s *=8.0;
roadCoords.s = fract(roadCoords.s);
vec4 snow_texel = vec4 (0.95, 0.95, 0.95, 1.0);
float noise_term = 0.5 * (noise_5m - 0.5);
noise_term += 0.5 * (noise_1m - 0.5);
snow_texel.a = snow_texel.a * 0.2+0.8* smoothstep(0.2,0.8, 0.3 +noise_term + 0.5*snow_thickness_factor +0.0001*(relPos.z +eye_alt -snowlevel) );
float noise_2000m = 0.0;
float noise_10m = 0.0;
float snowLaneShape = smoothstep(0.20, 0.28, roadCoords.s) * (1.0-smoothstep(0.42, 0.5, roadCoords.s));
snowLaneShape += smoothstep(0.6, 0.68, roadCoords.s) * (1.0-smoothstep(0.82, 0.9, roadCoords.s));
snow_texel.a *= (1.0 - 0.3* snowLaneShape * rtype_traffic_density);
texel.rgb = mix(texel.rgb, snow_texel.rgb, snow_texel.a* smoothstep(snowlevel, snowlevel+200.0, 1.0 * (relPos.z + eye_alt)+ (noise_2000m + 0.1 * noise_10m -0.55) *400.0));
float cTag = 0.0;
float cPresent = 0.0;
float cSign = 1.0;
float total_traffic_density = 0.0;
vec4 carMetaTexel;
if (road_traffic_enabled == 1)
{
float cOffset = 0.0;
if (roadCoords.s > 0.5)
{
if (rtype_dual_lane == 0) {cSign = -1.0;}
else {cOffset = 5.0;}
}
if (rtype_dual_lane == 1) {cSign = -1.0;}
cSign *= road_traffic_direction;
total_traffic_density = road_traffic_density * rtype_traffic_density * road_traffic_variation;
float cCoord = roadCoords.t + cOffset;
cCoord += 0.3 * osg_SimulationTime * cSign * rtype_traffic_speed * (1.0 - (0.9 * smoothstep(1.0, 2.5, total_traffic_density)));
cCoord *= 5.0;
cTag = fract(cCoord);
float cDomain = cCoord - cTag;
float cRnd = rand2D(vec2 (cDomain, cSign));
cPresent = 0.0;
float cDisc = 0.2 * total_traffic_density;
if (cRnd > 1.0 - cDisc) {cPresent = 1.0;}
float cColorRnd = (cRnd - 1.0 + cDisc)/ max(cDisc, 0.05);
float cColorRnd2 = rand2D(vec2 (cDomain, 0.5));
float cColumn = (cColorRnd2 * 16.0) - fract(cColorRnd2 * 16.0);
float cRow = (rand2D(vec2 (cDomain, 1.5)) * 2.0);
cRow = cRow- fract(cRow);
//cRow = 0.0;
vec3 cColor = vec3 (0.8 * (1.0 - cColorRnd), 0.8 * 2.0 * (0.5 - abs(cColorRnd - 0.5)) , 0.8 * cColorRnd);
cColor *= cColorRnd2;
float cPos = cTag;
if (cSign > 0.0) {cPos = 1.0 - cPos;}
float cShape = smoothstep(0.0, 0.05, cPos) * (1.0-smoothstep(0.35, 0.4, cPos));
float ctPos;
if (roadCoords.s < 0.5)
{ctPos = clamp(5.0 * (roadCoords.s - 0.25), 0.0,1.0); }
else
{ctPos = clamp(5.0 * (roadCoords.s - 0.65), 0.0,1.0); }
float clPos = cPos;// + 0.45;
vec4 carTexel = texture2D(CarTex, vec2((ctPos + cColumn) / 16.0 , ((clPos + cRow) / 2.0) ));
carMetaTexel = texture2D(CarMetaTex, vec2((ctPos + cColumn) / 16.0 , ((clPos + cRow) / 2.0) ));
float laneShape = smoothstep(0.25, 0.28, roadCoords.s) * (1.0-smoothstep(0.42, 0.45, roadCoords.s));
laneShape += smoothstep(0.65, 0.68, roadCoords.s) * (1.0-smoothstep(0.82, 0.85, roadCoords.s));
cShape *= laneShape;
//texel.rgb = mix(texel.rgb, cColor, cPresent * cShape);
texel.rgb = mix(texel.rgb, carTexel.rgb, cPresent * carTexel.a * laneShape);
//texel.rgb = mix(texel.rgb, vec3 (1.0, 0.0, 0.0) * cColorRnd2, 0.3);
}
/// END procedural cars
//vec3 reflVecN;
//vec3 viewVec = normalize(vViewVec);
//float v = abs(dot(viewVec, normalize(VNormal)));// Map a rainbowish color
//float nDotVP = max(0.0, dot(N, normalize(gl_LightSource[0].position.xyz)));
float nDotVP = max(0.0, dot(N, normalize(gl_LightSource[0].position.xyz)));
//float nDotHV = max(0.0, dot(N, normalize(gl_LightSource[0].halfVector.xyz)));
float nDotHV = max(0.0, dot(N,HV));
//glare on the backside of tranparent objects
//if ((gl_FrontMaterial.diffuse.a < 1.0 || texel.a < 1.0)
// && dot(N, normalize(gl_LightSource[0].position.xyz)) < 0.0) {
// nDotVP = max(0.0, dot(-N, normalize(gl_LightSource[0].position.xyz)) * (1.0 -texel.a) );
// nDotHV = max(0.0, dot(-N, HV) * (1.0 -texel.a) );
// }
float nDotVP1 = 0.0;
float nDotHV1 = 0.0;
// try specular reflection of sky irradiance
nDotVP1 = max(0.0, dot(N, up));
nDotHV1 = max(0.0, dot(N, normalize(normalize(up) + normalize(-vertVec))));
if (nDotVP == 0.0)
{pf = 0.0;}
else
{pf = pow(nDotHV, gl_FrontMaterial.shininess);}
if (nDotVP1 == 0.0)
{pf1 = 0.0;}
else
{pf1 = pow(nDotHV1, 0.5*gl_FrontMaterial.shininess);}
if (cloud_shadow_flag == 1)
{
light_diffuse = light_diffuse * shadow_func(relPos.x, relPos.y, 1.0, dist);
}
vec3 secondary_light = vec3 (0.0,0.0,0.0);
if (use_searchlight == 1)
{
secondary_light += searchlight();
}
if (use_landing_light == 1)
{
secondary_light += landing_light(landing_light1_offset, landing_light3_offset);
}
if (use_alt_landing_light == 1)
{
secondary_light += landing_light(landing_light2_offset, landing_light3_offset);
}
float shadowmap = getShadowing();
vec4 Diffuse = light_diffuse * nDotVP * shadowmap;
Diffuse.rgb += secondary_light * light_distance_fading(dist);
if (use_IR_vision)
{
Diffuse.rgb = max(Diffuse.rgb, vec3 (0.5, 0.5, 0.5));
}
vec4 Specular = gl_FrontMaterial.specular * light_diffuse * pf + gl_FrontMaterial.specular * light_ambient * pf1 * shadowmap;
Specular+= gl_FrontMaterial.specular * pow(max(0.0,-dot(N,nVertVec)),gl_FrontMaterial.shininess) * vec4(secondary_light,1.0);
//vec4 color = gl_Color + Diffuse * gl_FrontMaterial.diffuse;
vec4 color = Diffuse;// * gl_FrontMaterial.diffuse;
color = clamp( color, 0.0, 1.0 );
// set ambient adjustment to remove bluiness with user input
float ambient_offset = clamp(amb_correction, -1.0, 1.0);
vec4 ambient = gl_LightModel.ambient + light_ambient;
vec4 ambient_Correction = vec4(ambient.rg, ambient.b * 0.6, 1.0)
* ambient_offset ;
ambient_Correction = clamp(ambient_Correction, -1.0, 1.0);
color += ambient;
color.a = texel.a * alpha;
vec4 fragColor = vec4(color.rgb * mixedcolor + ambient_Correction.rgb, color.a);
fragColor += Specular;
fragColor.rgb += getClusteredLightsContribution(vertVec, N, texel.rgb);
//////////////////////////////////////////////////////////////////////
// BEGIN procedural lightmap
//////////////////////////////////////////////////////////////////////
vec3 pLMColor = streetlight_color;
float pLMIntensity = smoothstep(0.0, 0.4, roadCoords.s) * (1.0 - smoothstep(0.6, 1.0, roadCoords.s));
pLMIntensity = 0.25 * rtype_base_illumination * (1.0+ streetlight_factor) + 0.1 * max(0.0,sin(4.0 * roadCoords.t)) * streetlight_factor;
pLMIntensity = clamp(pLMIntensity, 0.0, 1.0);
if (gl_FrontMaterial.diffuse.r == 0.0) {pLMIntensity =0.0;}
pLMColor *= pLMIntensity;
if (road_traffic_enabled == 1)
{
float viewAngleFactor = smoothstep(-0.05, 0.0, cSign * dot(normalize(VBinormal), nVertVec));
vec3 pCLColor = vec3 (0.95, 1.0, 1.0);
vec3 pTLColor = vec3 (0.95, 0.0, 0.0);
// mean illumination by car headlights
pLMColor = pLMColor + 0.2 * min(1.0,total_traffic_density) * pCLColor;
//float pCLIntensity = smoothstep(0.4, 0.6, cTag) * (1.0-smoothstep(0.6, 0.8, cTag));
//float laneFact = smoothstep(0.25, 0.3, roadCoords.s) * (1.0-smoothstep(0.3, 0.35, roadCoords.s));
//laneFact += smoothstep(0.35, 0.4, roadCoords.s) * (1.0-smoothstep(0.4, 0.45, roadCoords.s));
//laneFact += smoothstep(0.65, 0.7, roadCoords.s) * (1.0-smoothstep(0.7, 0.75, roadCoords.s));
//laneFact += smoothstep(0.75, 0.8, roadCoords.s) * (1.0-smoothstep(0.8, 0.85, roadCoords.s));
//pCLIntensity = pCLIntensity * laneFact * cPresent;
float pCLIntensity, pTLIntensity;
if (cSign == -1.0)
{
pCLIntensity = carMetaTexel.r * cPresent * smoothstep(0.45, 0.55, cTag) * viewAngleFactor ;
pCLIntensity += 0.85 * carMetaTexel.b * cPresent * smoothstep(0.45, 0.55, cTag);
pTLIntensity = carMetaTexel.r * cPresent * (1.0 - smoothstep(0.45, 0.55, cTag)) * (1.0 - viewAngleFactor);
pTLIntensity += 0.85 * carMetaTexel.b * cPresent * (1.0 - smoothstep(0.45, 0.55, cTag));
}
else
{
pCLIntensity = carMetaTexel.r * cPresent * (1.0 - smoothstep(0.45, 0.55, cTag)) *viewAngleFactor ;
pCLIntensity += 0.85 * carMetaTexel.b * cPresent * (1.0 - smoothstep(0.45, 0.55, cTag));
pTLIntensity = carMetaTexel.r * cPresent * smoothstep(0.45, 0.55, cTag) * (1.0 - viewAngleFactor);
pTLIntensity += 0.85 * carMetaTexel.b * cPresent * smoothstep(0.45, 0.55, cTag);
}
//pCLColor *= pCLIntensity;
//if (cSign == 1.0)
// {
// pTLIntensity = smoothstep(0.9, 0.94, cTag) * (1.0-smoothstep(0.96, 1.0, cTag));
// }
//else
// {
// pTLIntensity = smoothstep(0.0, 0.04, cTag) * (1.0-smoothstep(0.06, 0.1, cTag));
// }
//pTLIntensity = pTLIntensity * laneFact * cPresent * (1.0 - viewAngleFactor);
pCLColor = pCLColor * pCLIntensity + pTLColor * pTLIntensity;
pLMColor = clamp(pLMColor, 0.0, 1.0);
pLMColor = max(pLMColor,pCLColor);
}
//fragColor.rgb = max(fragColor.rgb, pLMColor * gl_FrontMaterial.diffuse.rgb * smoothstep(0.0, 1.0, mixedcolor*.5 + pLMColor*.5));
fragColor.rgb = max(fragColor.rgb, pLMColor * smoothstep(0.0, 1.0, mixedcolor*.5 + pLMColor*.5));
//////////////////////////////////////////////////////////////////////
// END procedural lightmap
//////////////////////////////////////////////////////////////////////
/// BEGIN fog amount
float transmission;
float vAltitude;
float delta_zv;
float H;
float distance_in_layer;
float transmission_arg;
float eqColorFactor;
float delta_z = hazeLayerAltitude - eye_alt;
float mvisibility = min(visibility, avisibility);
if (dist > 0.04 * mvisibility)
{
if (delta_z > 0.0) // we're inside the layer
{
if (ct < 0.0) // we look down
{
distance_in_layer = dist;
vAltitude = min(distance_in_layer,mvisibility) * ct;
delta_zv = delta_z - vAltitude;
}
else // we may look through upper layer edge
{
H = dist * ct;
if (H > delta_z) {distance_in_layer = dist/H * delta_z;}
else {distance_in_layer = dist;}
vAltitude = min(distance_in_layer,visibility) * ct;
delta_zv = delta_z - vAltitude;
}
}
else // we see the layer from above, delta_z < 0.0
{
H = dist * -ct;
if (H < (-delta_z)) // we don't see into the layer at all, aloft visibility is the only fading
{
distance_in_layer = 0.0;
delta_zv = 0.0;
}
else
{
vAltitude = H + delta_z;
distance_in_layer = vAltitude/H * dist;
vAltitude = min(distance_in_layer,visibility) * (-ct);
delta_zv = vAltitude;
}
}
transmission_arg = (dist-distance_in_layer)/avisibility;
if (visibility < avisibility)
{
transmission_arg = transmission_arg + (distance_in_layer/visibility);
eqColorFactor = 1.0 - 0.1 * delta_zv/visibility - (1.0 -effective_scattering);
}
else
{
transmission_arg = transmission_arg + (distance_in_layer/avisibility);
eqColorFactor = 1.0 - 0.1 * delta_zv/avisibility - (1.0 -effective_scattering);
}
transmission = fog_func(transmission_arg, alt);
if (eqColorFactor < 0.2) eqColorFactor = 0.2;
}
else
{
eqColorFactor = 1.0;
transmission = 1.0;
}
/// END fog amount
/// BEGIN fog color
vec3 hazeColor = get_hazeColor(fog_lightArg);
float rShade = 1.0 - 0.9 * smoothstep(-terminator_width+ terminator, terminator_width + terminator, yprime_alt + 420000.0);
float lightIntensity = length(hazeColor * effective_scattering) * rShade;
if (transmission< 1.0)
{
if (fog_lightArg < 10.0)
{
intensity = length(hazeColor);
float mie_magnitude = 0.5 * smoothstep(350000.0, 150000.0, terminator-sqrt(2.0 * EarthRadius * terrain_alt));
hazeColor = intensity * ((1.0 - mie_magnitude) + mie_magnitude * mie_angle) * normalize(mix(hazeColor, vec3 (0.5, 0.58, 0.65), mie_magnitude * (0.5 - 0.5 * mie_angle)) );
}
intensity = length(hazeColor);
hazeColor = intensity * normalize (mix(hazeColor, intensity * vec3 (1.0,1.0,1.0), 0.7* smoothstep(5000.0, 50000.0, alt)));
hazeColor.r = hazeColor.r * 0.83;
hazeColor.g = hazeColor.g * 0.9;
float fade_out = max(0.65 - 0.3 *overcast, 0.45);
intensity = length(hazeColor);
hazeColor = intensity * normalize(mix(hazeColor, 1.5* shadedFogColor, 1.0 -smoothstep(0.25, fade_out,fog_earthShade) ));
hazeColor = intensity * normalize(mix(hazeColor, shadedFogColor, (1.0-smoothstep(0.5,0.9,eqColorFactor))));
float shadow = mix( min(1.0 + dot(VNormal,gl_LightSource[0].position.xyz),1.0), 1.0, 1.0-smoothstep(0.1, 0.4, transmission));
hazeColor = mix(shadow * hazeColor, hazeColor, 0.3 + 0.7* smoothstep(250000.0, 400000.0, terminator));
}
else
{
hazeColor = vec3 (1.0, 1.0, 1.0);
}
/// END fog color
fragColor = clamp(fragColor, 0.0, 1.0);
hazeColor = clamp(hazeColor, 0.0, 1.0);
///BEGIN Rayleigh fog ///
// Rayleigh color shift due to out-scattering
float rayleigh_length = 0.5 * avisibility * (2.5 - 1.9 * air_pollution)/alt_factor(eye_alt, eye_alt+relPos.z);
float outscatter = 1.0-exp(-dist/rayleigh_length);
fragColor.rgb = rayleigh_out_shift(fragColor.rgb,outscatter);
vec3 rayleighColor = vec3 (0.17, 0.52, 0.87) * lightIntensity;
float rayleighStrength = rayleigh_in_func(dist, air_pollution, avisibility/max(lightIntensity,0.05), eye_alt, eye_alt + relPos.z);
fragColor.rgb = mix(fragColor.rgb, rayleighColor,rayleighStrength);
/// END Rayleigh fog
// don't let the light fade out too rapidly
lightArg = (terminator + 200000.0)/100000.0;
float minLightIntensity = min(0.2,0.16 * lightArg + 0.5);
vec3 minLight = minLightIntensity * vec3 (0.2, 0.3, 0.4);
hazeColor *= eqColorFactor * fog_earthShade;
hazeColor.rgb = max(hazeColor.rgb, minLight.rgb);
fragColor.rgb = mix(hazeColor +secondary_light * fog_backscatter(mvisibility), fragColor.rgb,transmission);
fragColor.rgb = filter_combined(fragColor.rgb);
gl_FragColor = fragColor;
}