/*
    point: Hit point
    view: View vector (camera ray)
    normal: Normal vector
*/
vec3 applyLighting(vec3 hitPoint, vec3 view, vec3 normal, uint brick)
{
    // Lighting
    vec3 light_color = vec3(1.0, 1.0, 1.0);

    vec3 ambient = light_color * 0.1;
    vec3 diffuse = light_color * max(1.0-dot(normal, _SunDir), 0.0);
    vec3 specular = light_color * pow(max(dot(view, reflect(-_SunDir, normal)), 0.0), 32);

    // Combine colors
    vec3 object_color = _Materials[brick-1].albedo.rgb;//vec3(0.0, 0.1, 0.5);
    return (ambient + diffuse + specular) * object_color;
}