-void Lighting::bind() const
-{
- static Require _req(MSP_legacy_features);
- if(lights.size()>LightUnit::get_n_units())
- throw invalid_operation("Lighting::bind");
-
- const Lighting *old = current();
- if(!set_current(this))
- return;
-
- enable(GL_LIGHTING);
- glLightModelfv(GL_LIGHT_MODEL_AMBIENT, &ambient.r);
- for(unsigned i=0; i<lights.size(); ++i)
- {
- if(lights[i])
- lights[i]->bind_to(i);
- else
- Light::unbind_from(i);
- }
-
- if(old)
- {
- for(unsigned i=lights.size(); i<old->lights.size(); ++i)
- Light::unbind_from(i);
- }
-
- if(fog_density)
- {
- enable(GL_FOG);
- glFogi(GL_FOG_MODE, GL_EXP);
- glFogf(GL_FOG_DENSITY, fog_density);
- glFogfv(GL_FOG_COLOR, &fog_color.r);
- }
-}
-
-void Lighting::unbind()
-{
- const Lighting *old = current();
- if(!set_current(0))
- return;
-
- for(unsigned i=0; i<old->lights.size(); ++i)
- if(old->lights[i])
- Light::unbind_from(i);
-
- disable(GL_LIGHTING);
- if(old->fog_density)
- disable(GL_FOG);
-}
-