vec3 k_spec = fresnel_schlick(halfway, light, base_color, metalness);
vec3 k_diff = (1.0-k_spec)*(1.0-metalness);
- float denom = max(4.0*max(dot(normal, -look), 0.0)*max(dot(normal, light), 0.0), 0.001);
- return max(dot(normal, light), 0.0)*light_color*(k_diff*lambert_diffuse(base_color)+k_spec*ndist*geom/denom);
+ float spec_denom = max(4.0*max(dot(normal, -look), 0.0)*max(dot(normal, light), 0.0), 0.001);
+ return max(dot(normal, light), 0.0)*light_color*(k_diff*lambert_diffuse(base_color)+k_spec*ndist*geom/spec_denom);
}
vec3 cooktorrance_lighting(vec3 normal, vec3 look, vec3 base_color, float metalness, float roughness)
{
- vec3 light;
- if(use_normal_map)
- light = normalize(tbn_light_dir);
- else
- light = normalize(eye_light_dir);
+ vec3 light = normalize(world_light_dir);
float shadow = get_shadow_factor(0);
vec3 color = cooktorrance_one_light_direct(normal, look, light, light_sources[0].color, base_color, metalness, roughness)*shadow;
void main()
{
- vec3 normal;
- vec3 look;
- if(use_normal_map)
- {
- normal = get_fragment_normal();
- look = normalize(tbn_look_dir);
- }
- else
- {
- normal = normalize(eye_normal);
- look = normalize(eye_look_dir);
- }
+ vec3 normal = get_fragment_normal();
+ vec3 look = normalize(world_look_dir);
vec4 base_color = get_base_color();
float metalness = get_metalness_value();