84 lines
2.7 KiB
C++
84 lines
2.7 KiB
C++
// Filename: indexBufferContext.h
|
|
// Created by: drose (17Mar05)
|
|
//
|
|
////////////////////////////////////////////////////////////////////
|
|
//
|
|
// PANDA 3D SOFTWARE
|
|
// Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
|
|
//
|
|
// All use of this software is subject to the terms of the Panda 3d
|
|
// Software license. You should have received a copy of this license
|
|
// along with this source code; you will also find a current copy of
|
|
// the license at http://etc.cmu.edu/panda3d/docs/license/ .
|
|
//
|
|
// To contact the maintainers of this program write to
|
|
// panda3d-general@lists.sourceforge.net .
|
|
//
|
|
////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef INDEXBUFFERCONTEXT_H
|
|
#define INDEXBUFFERCONTEXT_H
|
|
|
|
#include "pandabase.h"
|
|
|
|
#include "bufferContext.h"
|
|
#include "geomPrimitive.h"
|
|
#include "preparedGraphicsObjects.h"
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Class : IndexBufferContext
|
|
// Description : This is a special class object that holds all the
|
|
// information returned by a particular GSG to indicate
|
|
// the vertex data array's internal context identifier.
|
|
//
|
|
// This allows the GSG to cache the vertex data array in
|
|
// whatever way makes sense. For instance, DirectX can
|
|
// allocate a vertex buffer for the array. OpenGL can
|
|
// create a buffer object.
|
|
////////////////////////////////////////////////////////////////////
|
|
class EXPCL_PANDA_GOBJ IndexBufferContext : public BufferContext {
|
|
public:
|
|
INLINE IndexBufferContext(PreparedGraphicsObjects *pgo, GeomPrimitive *data);
|
|
|
|
PUBLISHED:
|
|
INLINE GeomPrimitive *get_data() const;
|
|
|
|
INLINE bool changed_size(const GeomPrimitivePipelineReader *reader) const;
|
|
INLINE bool changed_usage_hint(const GeomPrimitivePipelineReader *reader) const;
|
|
INLINE bool was_modified(const GeomPrimitivePipelineReader *reader) const;
|
|
|
|
public:
|
|
INLINE void mark_loaded(const GeomPrimitivePipelineReader *reader);
|
|
|
|
private:
|
|
// This cannot be a PT(GeomPrimitive), because the data and
|
|
// the GSG both own their IndexBufferContexts! That would create a
|
|
// circular reference count.
|
|
GeomPrimitive *_data;
|
|
GeomEnums::UsageHint _usage_hint;
|
|
|
|
public:
|
|
static TypeHandle get_class_type() {
|
|
return _type_handle;
|
|
}
|
|
static void init_type() {
|
|
BufferContext::init_type();
|
|
register_type(_type_handle, "IndexBufferContext",
|
|
BufferContext::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;
|
|
|
|
friend class PreparedGraphicsObjects;
|
|
};
|
|
|
|
#include "indexBufferContext.I"
|
|
|
|
#endif
|
|
|