namespace Msp {
namespace GL {
-void InstanceScene::add(const Renderable &r)
+void InstanceScene::add(Renderable &r)
{
renderables[r.get_instance_key()].insert(&r);
}
-void InstanceScene::remove(const Renderable &r)
+void InstanceScene::remove(Renderable &r)
{
InstanceMap::iterator i = renderables.find(r.get_instance_key());
if(i!=renderables.end())