light_fs.glsl

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/**
 * @file
 * @brief Dynamic lighting fragment shader.
 */
 
vec3 LightContribution(vec4 lightParams, vec3 lightDir, vec3 normal) {
    vec3 delta = lightDir;
    vec3 dir = normalize(delta);
    float NdotL = clamp(dot(normal, dir), 0.0, 1.0);
 
    float dist = length(delta);
    float attenDiv = max(lightParams.a * dist * dist, 0.5);
    float attenuation = 1.0 / attenDiv;
 
    return lightParams.rgb * NdotL * attenuation;
}
 
/**
 * @brief LightFragment.
 */
vec3 LightFragment(vec3 normal) {
    vec3 light = vec3(0.0);
 
#unroll r_dynamic_lights
    light += LightContribution(LIGHTPARAMS[$], lightDirs[$], normal);
#endunroll
 
    return light;
}