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Modified cloud lighting with dependence on air pollution

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Thorsten Renk 2013-04-09 09:52:19 +03:00
parent 2f01deb6bd
commit 2c6a962a34
3 changed files with 17 additions and 10 deletions
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6
Effects/cloud.eff
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@ -11,6 +11,7 @@
<altitude><use>/sim/rendering/eye-altitude-m</use></altitude>
<cloud_self_shading><use>/environment/cloud-self-shading</use></cloud_self_shading>
<moonlight><use>/environment/moonlight</use></moonlight>
<air_pollution><use>/environment/air-pollution-norm</use></air_pollution>
<visibility><use>/environment/visibility-m</use></visibility>
</parameters>
@ -107,6 +108,11 @@
<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>visibility</name>
<type>float</type>

12
Nasal/local_weather/local_weather.nas
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@ -699,7 +699,7 @@ else
# compute the cloud layer self shading correction
var sun_angle = 1.57079632675 - getprop("/sim/time/sun-angle-rad");
var cloud_layer_shading = 1.0 - ((1.0 - scatt_max) * math.pow(math.cos(sun_angle),100.0));
var cloud_layer_shading = 1.0 - (0.8*(1.0 - scatt_max) * math.pow(math.cos(sun_angle),100.0));
# compute the overcast haze
@ -4125,11 +4125,11 @@ debug.dump(geodinfo(lat, lon));
#var info = {};
#for (var i = 0; i< 100000; i=i+1)
# {
# info = geodinfo(lat, lon);
#var info = {};
#for (var i = 0; i< 100000; i=i+1)
# {
# info = geodinfo(lat, lon);
# }

9
Shaders/3dcloud-lightfield.vert
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@ -12,6 +12,7 @@ uniform float altitude;
uniform float cloud_self_shading;
uniform float visibility;
uniform float moonlight;
uniform float air_pollution;
attribute vec3 usrAttr1;
attribute vec3 usrAttr2;
@ -151,8 +152,8 @@ void main(void)
float lightArg = (terminator-yprime_alt)/100000.0;
light_diffuse.b = light_func(lightArg, 1.330e-05, 0.264, 2.227, 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.b = light_func(lightArg -1.2 * air_pollution, 1.330e-05, 0.264, 2.227, 1.08e-05, 1.0);
light_diffuse.g = light_func(lightArg -0.6 * air_pollution, 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;
@ -160,9 +161,9 @@ void main(void)
light_diffuse.rgb = intensity * normalize(mix(light_diffuse.rgb, shadedFogColor, (1.0 - smoothstep(0.5,0.9, min(scattering, cloud_self_shading) ))));
// correct ambient light intensity and hue before sunrise
if (earthShade < 0.8)
if (earthShade < 0.6)
{
light_diffuse.rgb = intensity * normalize(mix(light_diffuse.rgb, shadedFogColor, 1.0 -smoothstep(0.1, 0.8,earthShade ) ));
light_diffuse.rgb = intensity * normalize(mix(light_diffuse.rgb, shadedFogColor, 1.0 -smoothstep(0.1, 0.6,earthShade ) ));
}