-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2008 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
+#include <stdexcept>
#include "light.h"
#include "lighting.h"
+#include "lightunit.h"
#include "misc.h"
+using namespace std;
+
namespace Msp {
namespace GL {
void Lighting::attach(unsigned i, const Light &l)
{
+ if(i>=LightUnit::get_n_units())
+ throw out_of_range("Lighting::attach");
+
if(i>=lights.size())
lights.resize(i+1);
lights[i] = &l;
+ if(current()==this)
+ l.bind_to(i);
}
void Lighting::detach(unsigned i)
return;
lights[i] = 0;
+ if(current()==this)
+ Light::unbind_from(i);
+}
+
+void Lighting::update_shader_data(const Matrix &view_matrix)
+{
+ shdata.uniform("ambient_color", ambient);
+ for(unsigned i=0; i<lights.size(); ++i)
+ if(lights[i])
+ lights[i]->update_shader_data(shdata, view_matrix, i);
}
void Lighting::bind() const
{
- if(current!=this)
- {
- enable(LIGHTING);
- glLightModelfv(GL_LIGHT_MODEL_AMBIENT, &ambient.r);
- for(unsigned i=0; i<lights.size(); ++i)
- if(lights[i])
- lights[i]->bind_to(i);
- current = this;
- }
+ 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);
}
void Lighting::unbind()
{
- if(current)
- {
- for(unsigned i=0; i<current->lights.size(); ++i)
- if(current->lights[i])
- {
- Light::activate(i);
- Light::unbind();
- }
- disable(LIGHTING);
- current = 0;
- }
-}
+ 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);
-const Lighting *Lighting::current = 0;
+ disable(GL_LIGHTING);
+}
} // namespace GL
} // namespace Msp