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//#define use_normalmapping
//#define flip_normalmap
#define use_shadows
#define textureS3o1 diffuseTex
#define textureS3o2 shadingTex
uniform sampler2D textureS3o1;
uniform sampler2D textureS3o2;
uniform samplerCube specularTex;
uniform samplerCube reflectTex;
uniform vec3 sunDir;
uniform vec3 sunDiffuse;
uniform vec3 sunAmbient;
#ifdef use_shadows
uniform sampler2DShadow shadowTex;
uniform float shadowDensity;
#endif
uniform vec4 teamColor; // alpha contains `far distance fading factor`
varying vec4 vertexWorldPos;
varying vec3 cameraDir;
varying float fogFactor;
#ifdef use_normalmapping
uniform sampler2D normalMap;
varying mat3 tbnMatrix;
#else
varying vec3 normalv;
#endif
uniform int numModelDynLights;
void main(void)
{
#ifdef use_normalmapping
vec2 tc = gl_TexCoord[0].st;
#ifdef flip_normalmap
tc.t = 1.0 - tc.t;
#endif
vec3 nvTS = normalize((texture2D(normalMap, tc).xyz - 0.5) * 2.0);
vec3 normal = tbnMatrix * nvTS;
#else
vec3 normal = normalize(normalv);
#endif
float a = max( dot(normal, sunDir), 0.0);
vec3 light = a * sunDiffuse + sunAmbient;
vec4 diffuse = texture2D(textureS3o1, gl_TexCoord[0].st);
vec4 extraColor = texture2D(textureS3o2, gl_TexCoord[0].st);
vec3 reflectDir = reflect(cameraDir, normal);
vec3 specular = textureCube(specularTex, reflectDir).rgb * extraColor.g * 4.0;
vec3 reflection = textureCube(reflectTex, reflectDir).rgb;
#ifdef use_shadows
float shadow = shadow2DProj(shadowTex, gl_TexCoord[1]).r;
shadow = 1.0 - (1.0 - shadow) * shadowDensity;
vec3 shade = mix(sunAmbient, light, shadow);
reflection = mix(shade, reflection, extraColor.g); // reflection
reflection += extraColor.rrr; // self-illum
specular *= shadow;
#else
reflection = mix(light, reflection, extraColor.g); // reflection
reflection += extraColor.rrr; // self-illum
#endif
gl_FragColor = diffuse;
gl_FragColor.rgb = mix(gl_FragColor.rgb, teamColor.rgb, gl_FragColor.a); // teamcolor
gl_FragColor.rgb = gl_FragColor.rgb * reflection + specular;
#if (MAX_DYNAMIC_MODEL_LIGHTS > 0)
for (int i = 0; i < MAX_DYNAMIC_MODEL_LIGHTS; i++) {
vec3 lightVec = gl_LightSource[BASE_DYNAMIC_MODEL_LIGHT + i].position.xyz - vertexWorldPos.xyz;
vec3 halfVec = gl_LightSource[BASE_DYNAMIC_MODEL_LIGHT + i].halfVector.xyz;
float lightRadius = gl_LightSource[BASE_DYNAMIC_MODEL_LIGHT + i].constantAttenuation;
float lightDistance = length(lightVec);
float lightScale = (lightDistance > lightRadius)? 0.0: 1.0;
float lightCosAngDiff = clamp(dot(normal, lightVec / lightDistance), 0.0, 1.0);
float lightCosAngSpec = clamp(dot(normal, normalize(halfVec)), 0.0, 1.0);
#ifdef OGL_SPEC_ATTENUATION
float lightAttenuation =
(gl_LightSource[BASE_DYNAMIC_MODEL_LIGHT + i].constantAttenuation) +
(gl_LightSource[BASE_DYNAMIC_MODEL_LIGHT + i].linearAttenuation * lightDistance) +
(gl_LightSource[BASE_DYNAMIC_MODEL_LIGHT + i].quadraticAttenuation * lightDistance * lightDistance);
lightAttenuation = 1.0 / max(lightAttenuation, 1.0);
#else
float lightAttenuation = 1.0 - min(1.0, ((lightDistance * lightDistance) / (lightRadius * lightRadius)));
#endif
float vectorDot = dot((-lightVec / lightDistance), gl_LightSource[BASE_DYNAMIC_MODEL_LIGHT + i].spotDirection);
float cutoffDot = gl_LightSource[BASE_DYNAMIC_MODEL_LIGHT + i].spotCosCutoff;
lightScale *= ((vectorDot < cutoffDot)? 0.0: 1.0);
gl_FragColor.rgb += (lightScale * gl_LightSource[BASE_DYNAMIC_MODEL_LIGHT + i].ambient.rgb);
gl_FragColor.rgb += (lightScale * lightAttenuation * (diffuse.rgb * gl_LightSource[BASE_DYNAMIC_MODEL_LIGHT + i].diffuse.rgb * lightCosAngDiff));
gl_FragColor.rgb += (lightScale * lightAttenuation * (specular.rgb * gl_LightSource[BASE_DYNAMIC_MODEL_LIGHT + i].specular.rgb * pow(lightCosAngSpec, 4.0)));
}
#endif
gl_FragColor.rgb = mix(gl_Fog.color.rgb, gl_FragColor.rgb, fogFactor); // fog
gl_FragColor.a = extraColor.a * teamColor.a;
}
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