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varying vec3 vHybridLightDir;
varying vec3 vHybridLightPos;
varying vec3 vHybridLightColor;
varying vec3 vAmbientColor;
varying vec3 vNormal;
varying vec3 vWorldPosition;
varying float vHybridLightRange;

uniform vec3 u_viewDirection;

void main()
{
    vec3 lightToVertex = vHybridLightPos - vWorldPosition;
    float dist = length(lightToVertex);
    float ratio = clamp(dist / 15.0, 0.0, 1.0);
    float atten = pow(cos(ratio * 3.14159265359) + 1, 2);
    atten *= 0.25;

    float dotNL = max(dot(normalize(vNormal), lightToVertex), 0.0);
    gl_FragColor = vec4(atten * vHybridLightColor * dotNL, 1.0);
}