+ cmp_func = f;
+ update_parameter(COMPARE_FUNC);
+}
+
+void Texture::bind_to(unsigned i) const
+{
+ TexUnit &unit = TexUnit::get_unit(i);
+ const Texture *cur = unit.get_texture();
+ if(unit.set_texture(this))
+ {
+ if(manager)
+ manager->resource_used(*this);
+
+ unit.bind();
+ if(cur && cur->target!=target)
+ glDisable(cur->target);
+ if(!cur || cur->target!=target)
+ glEnable(target);
+ glBindTexture(target, id);
+
+ if(dirty_params)
+ {
+ update_parameter(dirty_params);
+ dirty_params = 0;
+ }
+ }
+}
+
+const Texture *Texture::current(unsigned i)
+{
+ return TexUnit::get_unit(i).get_texture();
+}
+
+void Texture::unbind_from(unsigned i)
+{
+ TexUnit &unit = TexUnit::get_unit(i);
+ const Texture *cur = unit.get_texture();
+ if(unit.set_texture(0))
+ {
+ unit.bind();
+ glBindTexture(cur->target, 0);
+ glDisable(cur->target);
+ }