Panda3D
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graphicsBuffer.h
00001 // Filename: graphicsBuffer.h
00002 // Created by:  drose (06Feb04)
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 GRAPHICSBUFFER_H
00016 #define GRAPHICSBUFFER_H
00017 
00018 #include "pandabase.h"
00019 
00020 #include "graphicsOutput.h"
00021 #include "texture.h"
00022 #include "pointerTo.h"
00023 
00024 ////////////////////////////////////////////////////////////////////
00025 //       Class : GraphicsBuffer
00026 // Description : An offscreen buffer for rendering into.  This is
00027 //               similar in function to a GraphicsWindow, except that
00028 //               the output is not visible to the user.
00029 ////////////////////////////////////////////////////////////////////
00030 class EXPCL_PANDA_DISPLAY GraphicsBuffer : public GraphicsOutput {
00031 protected:
00032   GraphicsBuffer(GraphicsEngine *engine,
00033                  GraphicsPipe *pipe, 
00034                  const string &name,
00035                  const FrameBufferProperties &fb_prop,
00036                  const WindowProperties &win_prop,
00037                  int flags,
00038                  GraphicsStateGuardian *gsg,
00039                  GraphicsOutput *host);
00040 
00041 PUBLISHED:
00042   virtual ~GraphicsBuffer();
00043   void set_size(int x, int y);
00044 
00045 public:
00046   virtual void request_open();
00047   virtual void request_close();
00048 
00049   // It is an error to call any of the following methods from any
00050   // thread other than the window thread.  These methods are normally
00051   // called by the GraphicsEngine.
00052   virtual void set_close_now();
00053   virtual void process_events();
00054 
00055 protected:
00056   virtual void close_buffer();
00057   virtual bool open_buffer();
00058 
00059 protected:
00060   enum OpenRequest {
00061     OR_none,
00062     OR_open,
00063     OR_close,
00064   };
00065   OpenRequest _open_request;
00066   
00067 public:
00068   static TypeHandle get_class_type() {
00069     return _type_handle;
00070   }
00071   static void init_type() {
00072     GraphicsOutput::init_type();
00073     register_type(_type_handle, "GraphicsBuffer",
00074                   GraphicsOutput::get_class_type());
00075   }
00076   virtual TypeHandle get_type() const {
00077     return get_class_type();
00078   }
00079   virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
00080 
00081 private:
00082   static TypeHandle _type_handle;
00083 };
00084 
00085 #include "graphicsBuffer.I"
00086 
00087 #endif
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