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Runway effect with bumpmap and snow for Atmospheric Light Scattering

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This commit is contained in:
Thorsten Renk 2012-12-13 12:17:51 +02:00
parent 28b3d77566
commit 8bcc21263f
2 changed files with 40 additions and 29 deletions
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26
Effects/runway.eff
View file

@ -56,9 +56,9 @@
<normalmap_dds type="float">0.0</normalmap_dds> <normalmap_dds type="float">0.0</normalmap_dds>
<vertex-program-two-side type="bool">false</vertex-program-two-side> <vertex-program-two-side type="bool">false</vertex-program-two-side>
<cull-face>back</cull-face> <cull-face>back</cull-face>
<wetness> <rnorm>
<use>/environment/rain-norm</use> <use>/environment/rain-norm</use>
</wetness> </rnorm>
<!-- BEGIN fog include --> <!-- BEGIN fog include -->
<visibility><use>/environment/ground-visibility-m</use></visibility> <visibility><use>/environment/ground-visibility-m</use></visibility>
@ -75,7 +75,7 @@
<lichen_cover_factor><use>/environment/surface/lichen-cover-factor</use></lichen_cover_factor> <lichen_cover_factor><use>/environment/surface/lichen-cover-factor</use></lichen_cover_factor>
<snow_thickness_factor><use>/environment/surface/snow-thickness-factor</use></snow_thickness_factor> <snow_thickness_factor><use>/environment/surface/snow-thickness-factor</use></snow_thickness_factor>
<wetness><use>/environment/surface/wetness</use></wetness> <wetness><use>/environment/surface/wetness</use></wetness>
<fogtype><use>/sim/rendering/shaders/skydome</use></fogtype> <fogtype><use>/sim/rendering/shaders/skydome</use></fogtype>
<fogstructure><use>/environment/fog-structure</use></fogstructure> <fogstructure><use>/environment/fog-structure</use></fogstructure>
<cloud_self_shading><use>/environment/cloud-self-shading</use></cloud_self_shading> <cloud_self_shading><use>/environment/cloud-self-shading</use></cloud_self_shading>
<moonlight><use>/environment/moonlight</use></moonlight> <moonlight><use>/environment/moonlight</use></moonlight>
@ -166,9 +166,13 @@
<wrap-t><use>texture[0]/wrap-t</use></wrap-t> <wrap-t><use>texture[0]/wrap-t</use></wrap-t>
<internal-format><use>texture[0]/internal-format</use></internal-format> <internal-format><use>texture[0]/internal-format</use></internal-format>
</texture-unit> </texture-unit>
<texture-unit> <texture-unit>
<unit>1</unit> <unit>4</unit>
<type>noise</type> <image><use>texture[4]/image</use></image>
<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>
<texture-unit> <texture-unit>
<unit>5</unit> <unit>5</unit>
@ -299,9 +303,9 @@
<value type="int">0</value> <value type="int">0</value>
</uniform> </uniform>
<uniform> <uniform>
<name>NoiseTex</name> <name>NormalTex</name>
<type>sampler-3d</type> <type>sampler-2d</type>
<value type="int">1</value> <value type="int">4</value>
</uniform> </uniform>
<uniform> <uniform>
<name>mix_texture</name> <name>mix_texture</name>
@ -582,7 +586,7 @@
<name>spec_adjust</name> <name>spec_adjust</name>
<type>float</type> <type>float</type>
<value> <value>
<use>wetness</use> <use>rnorm</use>
</value> </value>
</uniform> </uniform>
@ -892,7 +896,7 @@
<name>spec_adjust</name> <name>spec_adjust</name>
<type>float</type> <type>float</type>
<value> <value>
<use>wetness</use> <use>rnorm</use>
</value> </value>
</uniform> </uniform>

43
Shaders/runway-lightfield.frag
View file

@ -11,7 +11,8 @@ varying vec2 rawPos;
uniform sampler2D texture; uniform sampler2D texture;
uniform sampler3D NoiseTex; uniform sampler2D NormalTex;
//uniform sampler3D NoiseTex;
uniform sampler2D snow_texture; uniform sampler2D snow_texture;
uniform sampler2D detail_texture; uniform sampler2D detail_texture;
uniform sampler2D mix_texture; uniform sampler2D mix_texture;
@ -191,6 +192,8 @@ float ct = dot(vec3(0.0, 0.0, 1.0), relPos)/dist;
// 1500m: overlay, detail, dust, fog // 1500m: overlay, detail, dust, fog
// 2000m: overlay, detail, snow, fog // 2000m: overlay, detail, snow, fog
float noise_01m;
float noise_1m = Noise2D(rawPos.xy, 1.0);
float noise_10m; float noise_10m;
float noise_5m; float noise_5m;
noise_10m = Noise2D(rawPos.xy, 10.0); noise_10m = Noise2D(rawPos.xy, 10.0);
@ -215,6 +218,8 @@ float noise_2000m = Noise2D(rawPos.xy, 2000.0);
// get the texels // get the texels
texel = texture2D(texture, gl_TexCoord[0].st); texel = texture2D(texture, gl_TexCoord[0].st);
vec4 nmap = texture2D(NormalTex, gl_TexCoord[0].st * 8.0);
vec3 N = nmap.rgb * 2.0 - 1.0;
float distortion_factor = 1.0; float distortion_factor = 1.0;
vec2 stprime; vec2 stprime;
@ -230,18 +235,17 @@ float noise_2000m = Noise2D(rawPos.xy, 2000.0);
if ((quality_level > 3)&&(relPos.z + eye_alt +500.0 > snowlevel)) if ((quality_level > 3)&&(relPos.z + eye_alt +500.0 > snowlevel))
{ {
//snow_texel = texture2D(snow_texture, gl_TexCoord[0].st);
float sfactor; float sfactor;
snow_texel = vec4 (0.95, 0.95, 0.95, 1.0) * (0.9 + 0.1* noise_500m + 0.1* (1.0 - noise_10m) ); noise_01m = Noise2D(rawPos.xy,0.1);
snow_texel.r = snow_texel.r * (0.9 + 0.05 * (noise_10m + noise_5m)); snow_texel = vec4 (0.95, 0.95, 0.95, 1.0) * (0.9 + 0.1* noise_50m + 0.1* (1.0 - noise_10m) );
snow_texel.g = snow_texel.g * (0.9 + 0.05 * (noise_10m + noise_5m));
snow_texel.a = 1.0; snow_texel.a = 1.0;
noise_term = 0.1 * (noise_500m-0.5); noise_term = 0.1 * (noise_50m-0.5);
sfactor = sqrt(2.0 * (1.0-steepness)/0.03) + abs(ct)/0.15; sfactor = 1.0;//sqrt(2.0 * (1.0-steepness)/0.03) + abs(ct)/0.15;
noise_term = noise_term + 0.2 * (noise_50m -0.5) * (1.0 - smoothstep(18000.0*sfactor, 40000.0*sfactor, dist) ) ; noise_term = noise_term + 0.2 * (noise_10m -0.5) * (1.0 - smoothstep(10000.0*sfactor, 16000.0*sfactor, dist) ) ;
noise_term = noise_term + 0.3 * (noise_10m -0.5) * (1.0 - smoothstep(4000.0 * sfactor, 8000.0 * sfactor, dist) ) ; noise_term = noise_term + 0.3 * (noise_5m -0.5) * (1.0 - smoothstep(1200.0 * sfactor, 2000.0 * sfactor, dist) ) ;
if (dist < 3000*sfactor){ noise_term = noise_term + 0.3 * (noise_5m -0.5) * (1.0 - smoothstep(1000.0 * sfactor, 3000.0 *sfactor, dist) );} noise_term = noise_term + 0.3 * (noise_1m -0.5) * (1.0 - smoothstep(500.0 * sfactor, 1000.0 *sfactor, dist) );
snow_texel.a = snow_texel.a * 0.2+0.8* smoothstep(0.2,0.8, 0.3 +noise_term + snow_thickness_factor +0.0001*(relPos.z +eye_alt -snowlevel) ); noise_term = noise_term + 0.3 * (noise_01m -0.5) * (1.0 - smoothstep(20.0 * sfactor, 100.0 *sfactor, dist) );
snow_texel.a = snow_texel.a * 0.2+0.8* smoothstep(0.2,0.8, 0.3 +noise_term + 0.2*snow_thickness_factor +0.0001*(relPos.z +eye_alt -snowlevel) );
} }
@ -324,12 +328,11 @@ if (quality_level > 3)
texel = mix(texel, dust_color, clamp(0.5 * dust_cover_factor + 3.0 * dust_cover_factor * (((noise_1500m - 0.5) * 0.125)+0.125 ),0.0, 1.0) ); texel = mix(texel, dust_color, clamp(0.5 * dust_cover_factor + 3.0 * dust_cover_factor * (((noise_1500m - 0.5) * 0.125)+0.125 ),0.0, 1.0) );
// mix snow // mix snow
//if (relPos.z + eye_alt +500.0 > snowlevel) if (relPos.z + eye_alt +500.0 > snowlevel)
// { {
// snow_alpha = smoothstep(0.75, 0.85, abs(steepness)); snow_alpha = smoothstep(0.75, 0.85, abs(steepness));
//texel = mix(texel, snow_texel, texel_snow_fraction); texel = mix(texel, snow_texel, snow_texel.a* smoothstep(snowlevel, snowlevel+200.0, snow_alpha * (relPos.z + eye_alt)+ (noise_2000m + 0.1 * noise_10m -0.55) *400.0));
// texel = mix(texel, snow_texel, snow_texel.a* smoothstep(snowlevel, snowlevel+200.0, snow_alpha * (relPos.z + eye_alt)+ (noise_2000m + 0.1 * noise_10m -0.55) *400.0)); }
// }
} }
@ -369,8 +372,12 @@ if ((dist < 5000.0)&& (quality_level > 3) && (wetness>0.0))
{ {
noisegrad_10m = (noise_10m - Noise2D(rawPos.xy+ 0.05 * normalize(lightDir.xy),10.0))/0.05; noisegrad_10m = (noise_10m - Noise2D(rawPos.xy+ 0.05 * normalize(lightDir.xy),10.0))/0.05;
noisegrad_5m = (noise_5m - Noise2D(rawPos.xy+ 0.05 * normalize(lightDir.xy),5.0))/0.05; noisegrad_5m = (noise_5m - Noise2D(rawPos.xy+ 0.05 * normalize(lightDir.xy),5.0))/0.05;
NdotL = NdotL + 1.0 * (noisegrad_10m + 0.5* noisegrad_5m) * mix_factor/0.8 * (1.0 - smoothstep(1000.0, 2000.0, dist)); NdotL = NdotL +1.0 * (noisegrad_10m + 0.5* noisegrad_5m) * mix_factor/0.8 * (1.0 - smoothstep(1000.0, 2000.0, dist));
} }
if (quality_level > 4)
{
NdotL = NdotL + 3.0 * N + 0.1 * (noise_01m-0.5) ;
}
if (NdotL > 0.0) { if (NdotL > 0.0) {
color += diffuse_term * NdotL; color += diffuse_term * NdotL;
NdotHV = max(dot(n, halfVector), 0.0); NdotHV = max(dot(n, halfVector), 0.0);