source: GTP/trunk/App/Demos/Geom/OgreStuff/include/OgreHardwareIndexBuffer.h @ 1812

Revision 1812, 2.7 KB checked in by gumbau, 18 years ago (diff)
Line 
1/*
2-----------------------------------------------------------------------------
3This source file is part of OGRE
4    (Object-oriented Graphics Rendering Engine)
5For the latest info, see http://www.ogre3d.org/
6
7Copyright (c) 2000-2005 The OGRE Team
8Also see acknowledgements in Readme.html
9
10This program is free software; you can redistribute it and/or modify it under
11the terms of the GNU Lesser General Public License as published by the Free Software
12Foundation; either version 2 of the License, or (at your option) any later
13version.
14
15This program is distributed in the hope that it will be useful, but WITHOUT
16ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
18
19You should have received a copy of the GNU Lesser General Public License along with
20this program; if not, write to the Free Software Foundation, Inc., 59 Temple
21Place - Suite 330, Boston, MA 02111-1307, USA, or go to
22http://www.gnu.org/copyleft/lesser.txt.
23-----------------------------------------------------------------------------
24*/
25#ifndef __HardwareIndexBuffer__
26#define __HardwareIndexBuffer__
27
28// Precompiler options
29#include "OgrePrerequisites.h"
30#include "OgreHardwareBuffer.h"
31#include "OgreSharedPtr.h"
32
33namespace Ogre {
34
35    /** Specialisation of HardwareBuffer for vertex index buffers, still abstract. */
36    class _OgreExport HardwareIndexBuffer : public HardwareBuffer
37    {
38            public:
39                    enum IndexType {
40                            IT_16BIT,
41                            IT_32BIT
42                    };
43
44            protected:
45                    IndexType mIndexType;
46                    size_t mNumIndexes;
47            size_t mIndexSize;
48
49            public:
50                    /// Should be called by HardwareBufferManager
51                    HardwareIndexBuffer(IndexType idxType, size_t numIndexes, HardwareBuffer::Usage usage,
52                bool useSystemMemory, bool useShadowBuffer);
53            ~HardwareIndexBuffer();
54                /// Get the type of indexes used in this buffer
55            IndexType getType(void) const { return mIndexType; }
56            /// Get the number of indexes in this buffer
57            size_t getNumIndexes(void) const { return mNumIndexes; }
58            /// Get the size in bytes of each index
59            size_t getIndexSize(void) const { return mIndexSize; }
60
61                    // NB subclasses should override lock, unlock, readData, writeData
62    };
63
64
65    /** Shared pointer implementation used to share index buffers. */
66    class _OgreExport HardwareIndexBufferSharedPtr : public SharedPtr<HardwareIndexBuffer>
67    {
68    public:
69        HardwareIndexBufferSharedPtr() : SharedPtr<HardwareIndexBuffer>() {}
70        explicit HardwareIndexBufferSharedPtr(HardwareIndexBuffer* buf);
71    };
72}
73#endif
74
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