OgreD3D9HardwareIndexBuffer.h
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    00001 /*
    00002 -----------------------------------------------------------------------------
    00003 This source file is part of OGRE
    00004     (Object-oriented Graphics Rendering Engine)
    00005 For the latest info, see http://www.ogre3d.org/
    00006
    00007 Copyright (c) 2000-2012 Torus Knot Software Ltd
    00008
    00009 Permission is hereby granted, free of charge, to any person obtaining a copy
    00010 of this software and associated documentation files (the "Software"), to deal
    00011 in the Software without restriction, including without limitation the rights
    00012 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    00013 copies of the Software, and to permit persons to whom the Software is
    00014 furnished to do so, subject to the following conditions:
    00015
    00016 The above copyright notice and this permission notice shall be included in
    00017 all copies or substantial portions of the Software.
    00018
    00019 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    00020 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    00021 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    00022 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    00023 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    00024 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    00025 THE SOFTWARE.
    00026 -----------------------------------------------------------------------------
    00027 */
    00028 #ifndef __D3D9HARDWAREINDEXBUFFER_H__
    00029 #define __D3D9HARDWAREINDEXBUFFER_H__
    00030
    00031 #include "OgreD3D9Prerequisites.h"
    00032 #include "OgreHardwareIndexBuffer.h"
    00033 #include "OgreD3D9Resource.h"
    00034
    00035 namespace Ogre {
    00036
    00037
    00038     class _OgreD3D9Export D3D9HardwareIndexBuffer : public HardwareIndexBuffer, public D3D9Resource
    00039     {
    00040
    00041     public:
    00042         D3D9HardwareIndexBuffer(HardwareBufferManagerBase* mgr, IndexType idxType, size_t numIndexes,
    00043             HardwareBuffer::Usage usage, bool useSystemMem, bool useShadowBuffer);
    00044         ~D3D9HardwareIndexBuffer();
    00046         void readData(size_t offset, size_t length, void* pDest);
    00048         void writeData(size_t offset, size_t length, const void* pSource,
    00049                 bool discardWholeBuffer = false);
    00050
    00051         // Called immediately after the Direct3D device has been created.
    00052         virtual void notifyOnDeviceCreate(IDirect3DDevice9* d3d9Device);
    00053
    00054         // Called before the Direct3D device is going to be destroyed.
    00055         virtual void notifyOnDeviceDestroy(IDirect3DDevice9* d3d9Device);
    00056
    00057         // Called immediately after the Direct3D device has entered a lost state.
    00058         virtual void notifyOnDeviceLost(IDirect3DDevice9* d3d9Device);
    00059
    00060         // Called immediately after the Direct3D device has been reset
    00061         virtual void notifyOnDeviceReset(IDirect3DDevice9* d3d9Device);
    00062
    00063         // Create the actual index buffer.
    00064         void createBuffer(IDirect3DDevice9* d3d9Device, D3DPOOL ePool);
    00065
    00067         IDirect3DIndexBuffer9* getD3DIndexBuffer(void);
    00068
    00069     protected:
    00070         struct BufferResources
    00071         {
    00072             IDirect3DIndexBuffer9*      mBuffer;
    00073             bool                        mOutOfDate;
    00074             size_t                      mLockOffset;
    00075             size_t                      mLockLength;
    00076             LockOptions                 mLockOptions;
    00077             uint                        mLastUsedFrame;
    00078         };
    00079
    00080     protected:
    00082         void* lockImpl(size_t offset, size_t length, LockOptions options);
    00083
    00085         void unlockImpl(void);
    00086
    00088         void updateBufferContent(BufferResources* bufferResources);
    00089
    00090         // updates buffer resources from system memory buffer.
    00091         bool updateBufferResources(const char* systemMemoryBuffer, BufferResources* bufferResources);
    00092
    00094         char* _lockBuffer(BufferResources* bufferResources, size_t offset, size_t length);
    00095
    00097         void _unlockBuffer(BufferResources* bufferResources);
    00098
    00099     protected:
    00100         typedef map<IDirect3DDevice9*, BufferResources*>::type  DeviceToBufferResourcesMap;
    00101         typedef DeviceToBufferResourcesMap::iterator            DeviceToBufferResourcesIterator;
    00102
    00103         DeviceToBufferResourcesMap  mMapDeviceToBufferResources;    // Map between device to buffer resources.
    00104         D3DINDEXBUFFER_DESC         mBufferDesc;                    // Buffer description.
    00105         BufferResources*            mSourceBuffer;                  // Source buffer resources when working with multiple devices.
    00106         char*                       mSourceLockedBytes;             // Source buffer locked bytes.
    00107         char*                       mSystemMemoryBuffer;            // Consistent system memory buffer for multiple devices support in case of write only buffers.
    00108     };
    00109 }
    00110 #endif
    00111

Copyright © 2012 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Sun Sep 2 2012 07:27:21