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/**
* @file avatarAlphaV.glsl
*
* Copyright (c) 2007-$CurrentYear$, Linden Research, Inc.
* $License$
*/
vec4 calcLighting(vec3 pos, vec3 norm, vec4 color, vec4 baseCol);
mat4 getSkinnedTransform();
void calcAtmospherics(vec3 inPositionEye);
float calcDirectionalLight(vec3 n, vec3 l);
float calcPointLightOrSpotLight(vec3 v, vec3 n, vec4 lp, vec3 ln, float la, float is_pointlight);
vec3 atmosAmbient(vec3 light);
vec3 atmosAffectDirectionalLight(float lightIntensity);
vec3 scaleDownLight(vec3 light);
vec3 scaleUpLight(vec3 light);
varying vec3 vary_position;
varying vec3 vary_ambient;
varying vec3 vary_directional;
varying vec3 vary_normal;
void main()
{
gl_TexCoord[0] = gl_MultiTexCoord0;
vec4 pos;
vec3 norm;
mat4 trans = getSkinnedTransform();
pos.x = dot(trans[0], gl_Vertex);
pos.y = dot(trans[1], gl_Vertex);
pos.z = dot(trans[2], gl_Vertex);
pos.w = 1.0;
norm.x = dot(trans[0].xyz, gl_Normal);
norm.y = dot(trans[1].xyz, gl_Normal);
norm.z = dot(trans[2].xyz, gl_Normal);
norm = normalize(norm);
gl_Position = gl_ProjectionMatrix * pos;
vary_position = pos.xyz;
vary_normal = norm;
calcAtmospherics(pos.xyz);
//vec4 color = calcLighting(pos.xyz, norm, gl_Color, vec4(0.));
vec4 col = vec4(0.0, 0.0, 0.0, gl_Color.a);
// Collect normal lights (need to be divided by two, as we later multiply by 2)
col.rgb += gl_LightSource[2].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[2].position, gl_LightSource[2].spotDirection.xyz, gl_LightSource[2].linearAttenuation, gl_LightSource[2].specular.a);
col.rgb += gl_LightSource[3].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[3].position, gl_LightSource[3].spotDirection.xyz, gl_LightSource[3].linearAttenuation, gl_LightSource[3].specular.a);
col.rgb += gl_LightSource[4].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[4].position, gl_LightSource[4].spotDirection.xyz, gl_LightSource[4].linearAttenuation, gl_LightSource[4].specular.a);
col.rgb += gl_LightSource[5].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[5].position, gl_LightSource[5].spotDirection.xyz, gl_LightSource[5].linearAttenuation, gl_LightSource[5].specular.a);
col.rgb += gl_LightSource[6].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[6].position, gl_LightSource[6].spotDirection.xyz, gl_LightSource[6].linearAttenuation, gl_LightSource[6].specular.a);
col.rgb += gl_LightSource[7].diffuse.rgb*calcPointLightOrSpotLight(pos.xyz, norm, gl_LightSource[7].position, gl_LightSource[7].spotDirection.xyz, gl_LightSource[7].linearAttenuation, gl_LightSource[7].specular.a);
col.rgb += gl_LightSource[1].diffuse.rgb*calcDirectionalLight(norm, gl_LightSource[1].position.xyz);
col.rgb = scaleDownLight(col.rgb);
// Add windlight lights
col.rgb += atmosAmbient(vec3(0.));
vary_ambient = col.rgb*gl_Color.rgb;
vary_directional = gl_Color.rgb*atmosAffectDirectionalLight(max(calcDirectionalLight(norm, gl_LightSource[0].position.xyz), (1.0-gl_Color.a)*(1.0-gl_Color.a)));
col.rgb = min(col.rgb*gl_Color.rgb, 1.0);
gl_FrontColor = col;
gl_FogFragCoord = pos.z;
}
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