Panda3D

cullBinStateSorted.h

00001 // Filename: cullBinStateSorted.h
00002 // Created by:  drose (22Mar05)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef CULLBINSTATESORTED_H
00016 #define CULLBINSTATESORTED_H
00017 
00018 #include "pandabase.h"
00019 
00020 #include "cullBin.h"
00021 #include "cullableObject.h"
00022 #include "geom.h"
00023 #include "transformState.h"
00024 #include "renderState.h"
00025 #include "pointerTo.h"
00026 
00027 ////////////////////////////////////////////////////////////////////
00028 //       Class : CullBinStateSorted
00029 // Description : A specific kind of CullBin that sorts geometry to
00030 //               collect items of the same state together, so that
00031 //               minimal state changes are required on the GSG to
00032 //               render them.
00033 //
00034 //               This also sorts objects front-to-back within a
00035 //               particular state, to take advantage of hierarchical
00036 //               Z-buffer algorithms which can early-out when an
00037 //               object appears behind another one.
00038 ////////////////////////////////////////////////////////////////////
00039 class EXPCL_PANDA_CULL CullBinStateSorted : public CullBin {
00040 public:
00041   INLINE CullBinStateSorted(const string &name, 
00042                             GraphicsStateGuardianBase *gsg,
00043                             const PStatCollector &draw_region_pcollector);
00044   virtual ~CullBinStateSorted();
00045 
00046   static CullBin *make_bin(const string &name, 
00047                            GraphicsStateGuardianBase *gsg,
00048                            const PStatCollector &draw_region_pcollector);
00049 
00050   virtual void add_object(CullableObject *object, Thread *current_thread);
00051   virtual void finish_cull(SceneSetup *scene_setup, Thread *current_thread);
00052   virtual void draw(bool force, Thread *current_thread);
00053 
00054 protected:
00055   virtual void fill_result_graph(ResultGraphBuilder &builder);
00056 
00057 private:
00058   class ObjectData {
00059   public:
00060     INLINE ObjectData(CullableObject *object);
00061     INLINE bool operator < (const ObjectData &other) const;
00062     
00063     CullableObject *_object;
00064   };
00065 
00066   typedef pvector<ObjectData> Objects;
00067   Objects _objects;
00068 
00069 public:
00070   static TypeHandle get_class_type() {
00071     return _type_handle;
00072   }
00073   static void init_type() {
00074     CullBin::init_type();
00075     register_type(_type_handle, "CullBinStateSorted",
00076                   CullBin::get_class_type());
00077   }
00078   virtual TypeHandle get_type() const {
00079     return get_class_type();
00080   }
00081   virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
00082 
00083 private:
00084   static TypeHandle _type_handle;
00085 };
00086 
00087 #include "cullBinStateSorted.I"
00088 
00089 #endif
00090 
00091 
00092   
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