Add runway rain effect (experimental)
Signed-off-by: Vivian Meazza <vivian.meazza@lineone.net>
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8 changed files with 201 additions and 0 deletions
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Aircraft/Generic/Effects/fgfs-sky2/1.png
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Aircraft/Generic/Effects/fgfs-sky2/1.png
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Aircraft/Generic/Effects/fgfs-sky2/2.png
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Aircraft/Generic/Effects/fgfs-sky2/3.png
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Aircraft/Generic/Effects/fgfs-sky2/4.png
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Aircraft/Generic/Effects/fgfs-sky2/6.png
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@ -107,6 +107,24 @@ EXAMPLES: You can find examples of both usages in the Hunter and Lightning model
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<ambient_correction>0.05</ambient_correction>
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<reflect_map>0</reflect_map>
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<normalmap_dds>0</normalmap_dds>
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<visibility>
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<use>/environment/ground-visibility-m</use>
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</visibility>
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<avisibility>
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<use>/environment/visibility-m</use>
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</avisibility>
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<lthickness>
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<use>/environment/ground-haze-thickness-m</use>
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</lthickness>
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<scattering>
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<use>/rendering/scene/scattering</use>
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</scattering>
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<terminator>
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<use>/environment/terminator-relative-position-m</use>
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</terminator>
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<fogtype>
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<use>/sim/rendering/scattering-shader</use>
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</fogtype>
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</parameters>
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<generate>
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@ -296,7 +314,9 @@ EXAMPLES: You can find examples of both usages in the Hunter and Lightning model
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<program>
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<vertex-shader>Shaders/include_fog.vert</vertex-shader>
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<vertex-shader>Shaders/reflect-bump-spec.vert</vertex-shader>
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<fragment-shader>Shaders/include_fog.frag</fragment-shader>
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<fragment-shader>Shaders/reflect-bump-spec.frag</fragment-shader>
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<attribute>
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<name>tangent</name>
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@ -415,6 +435,48 @@ EXAMPLES: You can find examples of both usages in the Hunter and Lightning model
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</value>
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</uniform>
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<uniform>
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<name>visibility</name>
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<type>float</type>
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<value>
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<use>visibility</use>
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</value>
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</uniform>
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<uniform>
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<name>avisibility</name>
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<type>float</type>
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<value>
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<use>avisibility</use>
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</value>
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</uniform>
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<uniform>
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<name>hazeLayerAltitude</name>
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<type>float</type>
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<value>
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<use>lthickness</use>
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</value>
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</uniform>
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<uniform>
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<name>scattering</name>
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<type>float</type>
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<value>
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<use>scattering</use>
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</value>
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</uniform>
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<uniform>
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<name>terminator</name>
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<type>float</type>
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<value>
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<use>terminator</use>
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</value>
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</uniform>
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<uniform>
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<name>fogType</name>
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<type>int</type>
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<value>
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<use>fogtype</use>
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</value>
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</uniform>
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</pass>
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</technique>
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</PropertyList>
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139
Shaders/runway-reflect-bump-spec.frag
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139
Shaders/runway-reflect-bump-spec.frag
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@ -0,0 +1,139 @@
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// -*- mode: C; -*-
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// Licence: GPL v2
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// Author: Vivian Meazza.
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#version 120
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varying vec3 rawpos;
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varying vec3 VNormal;
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varying vec3 VTangent;
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varying vec3 VBinormal;
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varying vec3 Normal;
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varying vec3 vViewVec;
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varying vec3 reflVec;
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varying vec4 Diffuse;
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varying float alpha;
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varying float fogCoord;
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uniform samplerCube Environment;
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uniform sampler2D Rainbow;
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uniform sampler2D BaseTex;
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uniform sampler2D Fresnel;
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uniform sampler2D Map;
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uniform sampler2D NormalTex;
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uniform sampler3D Noise;
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uniform float spec_adjust;
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uniform float rainbowiness;
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uniform float fresneliness;
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uniform float noisiness;
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uniform float ambient_correction;
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uniform float reflect_map;
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uniform float normalmap_dds;
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uniform int fogType;
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vec3 fog_Func(vec3 color, int type);
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void main (void)
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{
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vec3 halfV;
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float NdotL, NdotHV;
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vec3 lightDir = gl_LightSource[0].position.xyz;
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vec3 halfVector = gl_LightSource[0].halfVector.xyz;
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vec4 color = gl_Color;
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vec4 specular = vec4(0.0);
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vec4 ns = texture2D(NormalTex, gl_TexCoord[0].st * 16.0);
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vec3 n = ns.rgb * 2.0 - 1.0;
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n = normalize(n.x * VTangent + n.y * VBinormal + n.z * VNormal);
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//fix dds normal
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if (normalmap_dds > 0.0) {
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n = -n;
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}
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NdotL = max(0.0, dot(n, lightDir));
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// calculate the specular light
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if (NdotL > 0.0) {
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color += Diffuse * NdotL;
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halfV = normalize(halfVector);
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NdotHV = max(dot(n, halfV), 0.0);
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if (gl_FrontMaterial.shininess > 0.0)
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specular.rgb = (gl_FrontMaterial.specular.rgb * ns.a
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* gl_LightSource[0].specular.rgb
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* pow(NdotHV, gl_FrontMaterial.shininess + 128 * spec_adjust));
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}
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//color.a = alpha;
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vec4 texel = texture2D(BaseTex, gl_TexCoord[0].st);
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//vec4 texelcolor = color * texel + specular;
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color.a = texel.a * alpha;
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color = clamp(color, 0.0, 1.0);
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// calculate the fog factor
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//const float LOG2 = 1.442695;
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//float fogFactor = exp2(-gl_Fog.density * gl_Fog.density * fogCoord * fogCoord * LOG2);
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//fogFactor = clamp(fogFactor, 0.0, 1.0);
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//if(gl_Fog.density == 1.0)
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// fogFactor=1.0;
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vec3 normal = normalize(VNormal);
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vec3 viewVec = normalize(vViewVec);
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// Map a rainbowish color
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float v = dot(viewVec, normal);
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vec4 rainbow = texture2D(Rainbow, vec2(v, 0.0));
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// Map a fresnel effect
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vec4 fresnel = texture2D(Fresnel, vec2(v, 0.0));
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// map the refection of the environment
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vec4 reflection = textureCube(Environment, reflVec);
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float refl_correction = spec_adjust * 1.7 - 1.0;
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// set the user shininess offset
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float transparency_offset = clamp(refl_correction, -1.0, 1.0);
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float reflFactor = 0.0;
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vec4 map = texture2D(Map, gl_TexCoord[0].st * 8.0);
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if(reflect_map > 0.0){
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// map the shininess of the object with user input
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//float pam = (map.a * -2) + 1; //reverse map
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reflFactor = map.a *(1.0- n.z) + transparency_offset;
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} else {
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// set the reflectivity proportional to shininess with user input
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reflFactor = (gl_FrontMaterial.shininess / 128.0) + transparency_offset;
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}
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reflFactor = clamp(reflFactor, 0.0, 0.75);
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// set ambient adjustment to remove bluiness with user input
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float ambient_offset = clamp(ambient_correction, -1.0, 1.0);
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vec4 ambient_Correction = vec4(gl_LightSource[0].ambient.rg, gl_LightSource[0].ambient.b * 0.6, 0.5) * ambient_offset ;
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ambient_Correction = clamp(ambient_Correction, -1.0, 1.0);
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// map noise vector
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vec4 noisevec = texture3D(Noise, rawpos.xyz);
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// add fringing fresnel and rainbow effects and modulate by reflection
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vec4 reflcolor = mix(reflection, rainbow, rainbowiness * v);
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vec4 reflfrescolor = mix(reflcolor, fresnel, fresneliness * v);
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vec4 noisecolor = mix(reflfrescolor, noisevec, noisiness);
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vec4 raincolor = vec4(noisecolor.rgb * reflFactor, 1.0);
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vec4 mixedcolor = mix(texel, raincolor, reflFactor);
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// the final reflection
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vec4 reflColor = vec4(color.rgb * mixedcolor.rgb + specular.rgb + ambient_Correction.rgb, color.a);
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reflColor = clamp(reflColor, 0.0, 1.0);
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vec4 fragColor = reflColor;
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fragColor.rgb = fog_Func(fragColor.rgb, fogType);
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gl_FragColor = fragColor;
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}
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