/**
 * PANDA 3D SOFTWARE
 * Copyright (c) Carnegie Mellon University.  All rights reserved.
 *
 * All use of this software is subject to the terms of the revised BSD
 * license.  You should have received a copy of this license along
 * with this source code in a file named "LICENSE."
 *
 * @file dxGeomMunger9.h
 * @author drose
 * @date 2005-03-11
 */

#ifndef DXGEOMMUNGER9_H
#define DXGEOMMUNGER9_H

#include "pandabase.h"
#include "standardMunger.h"
#include "graphicsStateGuardian.h"
#include "weakPointerTo.h"
#include "weakPointerCallback.h"

/**
 * This specialization on GeomMunger finesses vertices for DirectX rendering.
 * In particular, it makes sure colors are stored in DirectX's packed_argb
 * format, and that all relevant components are packed into a single array, in
 * the correct order.
 */
class EXPCL_PANDADX DXGeomMunger9 : public StandardMunger, public WeakPointerCallback {
public:
  DXGeomMunger9(GraphicsStateGuardian *gsg, const RenderState *state);
  virtual ~DXGeomMunger9();
  ALLOC_DELETED_CHAIN(DXGeomMunger9);

  virtual void wp_callback(void *);

protected:
  virtual CPT(GeomVertexFormat) munge_format_impl(const GeomVertexFormat *orig,
                                                  const GeomVertexAnimationSpec &animation);
  virtual CPT(GeomVertexFormat) premunge_format_impl(const GeomVertexFormat *orig);

  virtual int compare_to_impl(const GeomMunger *other) const;
  virtual int geom_compare_to_impl(const GeomMunger *other) const;

private:
  WCPT(TextureAttrib) _texture;
  WCPT(TexGenAttrib) _tex_gen;

  // This pointer is derived from _texture, above.  In the case that it is a
  // different pointer, we maintain its reference count explicitly.  If it is
  // the same pointer, we don't reference count it at all (so we won't hold on
  // to the reference count unnecessarily).
  const TextureAttrib *_filtered_texture;
  bool _reffed_filtered_texture;

  static GeomMunger *_deleted_chain;

public:
  static TypeHandle get_class_type() {
    return _type_handle;
  }
  static void init_type() {
    StandardMunger::init_type();
    register_type(_type_handle, "DXGeomMunger9",
                  StandardMunger::get_class_type());
  }
  virtual TypeHandle get_type() const {
    return get_class_type();
  }
  virtual TypeHandle force_init_type() {init_type(); return get_class_type();}

private:
  static TypeHandle _type_handle;
};

#include "dxGeomMunger9.I"

#endif