// :D

#include "common_world.glsl"

vec3 scene_do_lighting( vec3 diffuse, vec3 wnormal )
{
   // Lighting
   vec3 halfview = uCamera - aWorldCo;
   float fdist = length(halfview);
   halfview /= fdist;

   vec3 total_light = newlight_compute_ambient();
   
   // Compute world lighting contribution and apply it according to the
   // shadow map
   //
   vec3 world_light = newlight_compute_world_diffuse( wnormal );
   world_light += newlight_compute_sun_spec( wnormal, halfview, 0.1 );

   float world_shadow = newlight_compute_sun_shadow();

   total_light += world_light * world_shadow;

   // Compute the other lights that exist in the map, not effected by the sun
   // shadow
   total_light += newlight_compute_quadratic
                  ( 
                     wnormal, halfview,
                     g_point_light_positions[ aLights.x ].xyz,
                     g_point_light_colours[ aLights.x ].rgb 
                  );
   total_light += newlight_compute_quadratic
                  ( 
                     wnormal, halfview,
                     g_point_light_positions[ aLights.y ].xyz,
                     g_point_light_colours[ aLights.y ].rgb 
                  );
   total_light += newlight_compute_quadratic
                  ( 
                     wnormal, halfview,
                     g_point_light_positions[ aLights.z ].xyz,
                     g_point_light_colours[ aLights.z ].rgb 
                  );

   return apply_fog( diffuse * total_light, fdist );
}